JP2018152356A - Lens connection body and vehicular lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens body extending radially in a predetermined direction, and having sense of unity and good appearance, and a vehicular lamp including the lens body.SOLUTION: A lens body 12A includes a first lens part 12A1 arranged in front of a light source 14, and a second lens part 12A2 arranged in front of the first lens part, and is configured to form a predetermined light distribution pattern containing a cutoff line on an upper end edge, by radiating light from the light source 14 forward through the first lens part and the second lens part in this order. Between a rear end part and front end part of the first lens part, a first lower reflection surface 12b is arranged.SELECTED DRAWING: Figure 17

Description

The present invention relates to a lens body and a vehicle lamp, and more particularly to a lens body arranged in front of a light source and a vehicle lamp including the lens body.

Conventionally, a vehicular lamp having a structure in which a light source and a lens body are combined has been proposed (for example,
Patent Document 1).

120 is a longitudinal sectional view of the vehicular lamp 200 described in Patent Document 1, and FIG. 121 is a top view showing a state in which a plurality of vehicular lamps 200 (a plurality of lens bodies 220) are arranged in a line.

As shown in FIG. 120, the vehicular lamp 200 described in Patent Document 1 includes a light source 210 having a semiconductor light emitting element and a lens body 220, and the lens body 220 has a surface with a light emitting surface facing upward. A hemispherical incident surface 221 that covers the light source 210 from above, and a first reflecting surface 22 that is disposed in the traveling direction of light from the light source 210 that enters the lens body 220 from the incident surface 221.
2 (reflection surface by metal vapor deposition), a second extending forward from the lower end edge of the first reflection surface 222
A reflection surface 223 (reflection surface by metal vapor deposition), a convex lens surface 224, and the like are formed.

Japanese Patent No. 4047186

However, in the vehicular lamp 200 configured as described above, the convex lens surface 224, which is the final exit surface of the lens body 220, is configured as a hemispherical lens surface. As a result, as shown in FIG. Even if the lamps 200 (the plurality of lens bodies 220) are arranged in a line, the appearance of the dots is continuous, and a lens body having a sense of unity that extends in a line shape in a predetermined direction and a vehicular lamp including the lens body are configured. There is a problem that it is not possible (the design freedom is poor).

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an excellent-looking lens body that extends in a line shape in a predetermined direction, and a vehicular lamp including the lens body.

In order to achieve the above object, the invention described in claim 1 includes a first lens unit disposed in front of a light source, and a second lens unit disposed in front of the first lens unit, The light from the light source is transmitted through the first lens unit and the second lens unit in this order and irradiated forward, thereby forming a predetermined light distribution pattern including a cut-off line at the upper edge. The lens body includes a first lower reflection surface disposed between a rear end portion and a front end portion of the first lens portion, and a front end portion of the first lower reflection surface includes a shade, A rear end portion of one lens portion includes a first incident surface, a front end portion of the first lens portion includes a first intermediate exit surface, and a rear end portion of the second lens portion includes an intermediate entrance surface. The front end portion of the second lens portion includes a final exit surface, and the first entrance surface, the first The lower reflecting surface, the first intermediate emitting surface, the intermediate incident surface, and the final emitting surface are the first lower reflecting surface of the light from the light source that has entered the first lens unit from the first incident surface. The light partially shielded by the shade and the light internally reflected by the first lower reflection surface are emitted from the first intermediate emission surface to the outside of the first lens unit, and further from the intermediate incidence surface to the first The first light distribution pattern including the cut-off line defined by the shade of the first lower reflecting surface is formed at the upper edge by being incident on the inside of the two lens portions, emitted from the final emission surface, and irradiated forward. The final exit surface is configured as a planar surface, and at least one of the first intermediate exit surface and the intermediate entrance surface exits from the final exit surface. From the light source But relates vertically, so that the collimated light, the surface shape is configured, the predetermined light distribution pattern,
It is formed by the first light distribution pattern.

According to the first aspect of the present invention, firstly, it is possible to provide a lens body that looks good with a sense of unity extending in a line shape in a predetermined direction. This is because the final emission surface is configured as a plane surface.

Second, a lens body capable of forming a predetermined light distribution pattern (for example, a low beam light distribution pattern) condensed in the horizontal direction and the vertical direction even though the final emission surface has a planar shape is provided. be able to. This is because the first light exit surface of the first lens unit is mainly responsible for condensing in the horizontal direction, and at least one of the first intermediate exit surface and the intermediate entrance surface is mainly responsible for condensing in the vertical direction. Is.

According to a second aspect of the present invention, in the first aspect of the invention, the first lens unit includes a pair of left and right side surfaces disposed between a rear end portion and the front end portion. The rear end portion of the lens unit includes a pair of left and right second incident surfaces disposed on both the left and right sides of the first incident surface so as to surround the space between the light source and the first incident surface from both the left and right sides. The front end portion of the first lens unit includes a pair of left and right second intermediate exit surfaces disposed on the left and right sides of the first intermediate exit surface, the pair of left and right second entrance surfaces, the pair of left and right side surfaces, The pair of left and right second intermediate exit surfaces, the intermediate entrance surface, and the final exit surface enter the first lens unit from the pair of left and right second entrance surfaces and are internally reflected by the pair of left and right side surfaces. Light from the light source is emitted from the pair of left and right second intermediate emission surfaces to the first lens unit. A pair of left and right first light beams that form a second light distribution pattern by being incident on the second lens unit from the intermediate incident surface, emitted from the final exit surface, and irradiated forward. 2 at least one of the pair of left and right second intermediate exit surfaces and the intermediate entrance surface is collimated in the vertical direction with respect to the light from the light source that exits from the final exit surface. The surface shape is configured to be light, and the predetermined light distribution pattern is formed as a combined light distribution pattern by superimposing the first light distribution pattern and the second light distribution pattern. And

According to the second aspect of the present invention, the second optical system has the same effect as that of the first aspect, that is, the second arrangement in which light is condensed in the vertical direction even though the final emission surface has a planar shape. A lens body capable of forming a light pattern (for example, a light distribution pattern for mid) can be provided. This is due to the fact that at least one of the first intermediate exit surface and the intermediate entrance surface is in charge of condensing in the vertical direction.

According to a third aspect of the present invention, in the first aspect of the invention, a pair of left and right side surfaces disposed between a rear end portion of the first lens portion and the front end portion, and the first lens portion. A pair of left and right second lower reflecting surfaces disposed between a rear end portion and the front end portion and on both left and right sides of the first lower reflecting surface, and the pair of left and right second lower reflecting surfaces. The front end of the first lens unit includes a shade, and the rear end of the first lens unit surrounds the space between the light source and the first incident surface on both the left and right sides of the first incident surface. A pair of left and right second incident surfaces disposed; and a front end portion of the first lens unit includes a pair of left and right second intermediate exit surfaces disposed on both left and right sides of the first intermediate exit surface; A second incident surface, the pair of left and right side surfaces, the pair of left and right second lower reflecting surfaces, and the pair of left and right second intermediate exits. The intermediate entrance surface and the final exit surface are incident on the first lens unit from the pair of left and right second entrance surfaces and reflected from the light source on the pair of left and right side surfaces. The light partially shielded by the shades of the pair of second lower reflecting surfaces and the light internally reflected by the pair of left and right second lower reflecting surfaces are output from the pair of left and right second intermediate exit surfaces to the outside of the first lens unit. Is further incident on the inside of the second lens unit from the intermediate entrance surface, exits from the final exit surface, and is irradiated forward, whereby the pair of left and right second lower reflection surfaces is formed on the upper edge. It constitutes a pair of left and right second optical systems that form a second light distribution pattern including a cut-off line defined by a shade, and at least one of the pair of left and right second intermediate emission surfaces and the intermediate incident surface is The final emission The surface shape of the light source emitted from the light source is collimated in the vertical direction, and the predetermined light distribution pattern includes the first light distribution pattern and the second light distribution pattern. The light pattern is superimposed and formed as a combined light distribution pattern.

According to the third aspect of the present invention, the second optical system has the same effect as that of the first aspect, that is, the second arrangement in which the light is condensed in the vertical direction even though the final emission surface has a planar shape. A lens body capable of forming a light pattern (for example, a light distribution pattern for mid) can be provided. This is because at least one of the first intermediate exit surface and the intermediate entrance surface is in charge of condensing in the vertical direction.

The invention according to claim 4 is the invention according to claim 2 or 3, wherein the rear end portion of the first lens portion is located above the first incident surface between the light source and the first incident surface. It includes an upper incident surface disposed so as to surround the space between them from above.

According to the fourth aspect of the present invention, it is possible to provide a lens body with high light utilization efficiency in which light from a light source spreading upward is directly incident on the inside of the lens from the upper incident surface.

The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the final emission surface is configured as a planar surface having a slant angle and / or a camber angle. It is characterized by being.

According to the fifth aspect of the present invention, it is possible to provide a lens body having a new appearance in which the final emission surface is configured as a plane surface having a slant angle and / or a camber angle.

A sixth aspect of the present invention is the invention according to any one of the first to fifth aspects, wherein the final emission surface is obliquely rearward and upward so that a lower end edge thereof is positioned forward with respect to an upper end edge. It is characterized by being arranged in an inclined posture.

According to the sixth aspect of the present invention, there is provided a lens body having a new appearance in which the final emission surface is disposed in a posture inclined obliquely upward and rearward so that the lower end edge thereof is positioned forward with respect to the upper end edge. can do.

  The present invention can also be specified as follows.

The vehicle lamp provided with the lens body of any one of Claim 1 to 6, and the said light source.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the good-looking lens body extended in a line shape in a predetermined direction, and a vehicle lamp provided with the same.

It is a longitudinal section of vehicular lamp 10 which is a 1st embodiment of the present invention. (A) The perspective view of the lens body 12 seen from the front, (b) The perspective view of the lens body 12 seen from the back. (A) Top view of lens body 12, (b) Bottom view, (c) Side view. (A) The figure showing a mode that the light from the light source 14 (precisely the reference point F) injects into the entrance plane 12a, (b) The light (direct light RayA) from the light source 14 which injected into the lens body 12 inside. It is a figure showing a mode that it condenses. It is an example (transverse sectional view) of the incident surface 12a. It is another example (transverse cross section) of the entrance plane 12a. (A) (b) It is a figure for demonstrating the distance between the entrance plane 12a and the light source 14. FIG. It is a figure for demonstrating the role of the shade 12c. (A) Schematic diagram of the shade 12c viewed from the position of the light source 14, (b) An enlarged perspective view enlarging the reflecting surface 12b (including the shade 12c) shown in FIG. 2 (a), (c) FIG. 2 (a). It is a top view of the reflective surface 12b (including shade 12c) shown in FIG. (A)-(c) It is the modification (side view) of the shade 12c. (A) An example of a low-beam light distribution pattern P1 formed on a virtual vertical screen (disposed approximately 25 m ahead from the front of the vehicle) by the vehicular lamp 10 according to the first embodiment, (B) An example of the light distribution pattern P2 for low beam, (c) An example of the light distribution pattern P3 for low beam. It is a diagram for explaining a light source image I _Cs1 ~I _{C s4} by the light from the light source 14 in each section Cs1 to Cs4. (A) When reflecting surface 12b is arranged in the horizontal direction, a diagram depicting a situation in which reflected light RayB ′ internally reflected by reflecting surface 12b travels in a direction not incident on exit surface 12d, (b) reflecting surface 12b FIG. 6 is a diagram illustrating a state in which the reflected light RayB internally reflected by the reflecting surface 12b travels in a direction to enter the exit surface 12d when it is arranged to be inclined with respect to the first reference axis AX1. (A) When the reflective surface 12b is arranged in the horizontal direction, a diagram depicting a state in which the reflected light RayB ′ traveling in the direction not incident on the exit surface 12d can be captured by extending the reflective surface 12b upward; b) When the reflecting surface 12b is disposed so as to be inclined with respect to the first reference axis AX1, more light (reflected light RayB internally reflected by the reflecting surface 12b) is captured without extending the reflecting surface 12b upward. FIG. (A) The second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the lens body 12 is condensed toward the second reference axis AX2 toward the shade 12c at least in the vertical direction. In this case, a diagram depicting a state in which much of the light from the light source 14 incident on the inside of the lens body 12 is shielded by the shade 12c, and (b) the second reference axis AX2 is disposed so as to be inclined with respect to the first reference axis AX1. When the light from the light source 14 incident on the inside of the lens body 12 is condensed toward the second reference axis AX2 toward the shade 12c at least in the vertical direction, the light captured by the emission surface 12d (the inner surface of the reflection surface 12b) It is the figure which showed a mode that reflected reflected light RayB) increased. It is a perspective view of 10 A of vehicle lamps which are 2nd Embodiment of this invention. (A) The longitudinal cross-sectional view of 10 A of vehicle lamps, (b) It is a figure showing a mode that the light from the light source 14 advances the inside of the lens body 12A. It is a top view showing a mode that a plurality of vehicular lamps 10 (a plurality of lens bodies 12) of a 1st embodiment are arranged in a line. (A) Front view showing a state in which a plurality of vehicular lamps 10A (a plurality of lens bodies 12A) of the second embodiment are arranged in a line in the horizontal direction, (b) a top view. (A) An example of a low beam light distribution pattern P1a formed on a virtual vertical screen (disposed approximately 25 m ahead from the front of the vehicle) facing the front of the vehicle by the vehicle lamp 10A of the second embodiment, (B) An example of the low beam light distribution pattern P1b, (c) an example of the low beam light distribution pattern P1c. (A) Top view of lens body 12A of 2nd Embodiment, (b) Side view, (c) Bottom view. It is an example (cross-sectional view) of the 1st entrance plane 12a. It is a perspective view for demonstrating lens body 12A (1st output surface 12A1a, 2nd entrance surface 12A2a, and 2nd output surface 12A2b) of 2nd Embodiment. It is a figure for demonstrating each normal line of 1st output surface 12A1a, 2nd entrance surface 12A2a, and 2nd output surface 12A2b. It is a figure explaining lens body 12B which is the 1st modification of lens body 12A of a 2nd embodiment. It is a perspective view for demonstrating lens body 12C (1st output surface 12A1a, 2nd entrance surface 12A2a, and 2nd output surface 12A2b) which is the 2nd modification of lens body 12A of 2nd Embodiment. It is a front view showing a mode that a plurality of vehicular lamps 10C (a plurality of lens bodies 12C) are arranged in a line in the vertical direction. It is the schematic of the direct projection type vehicle lamp 20 to which the idea of "disassembling a condensing function" is applied. This is an example of a high beam light distribution pattern P _Hi formed on a virtual vertical screen (disposed approximately 25 m forward from the front of the vehicle) facing the front of the vehicle. It is the schematic of the projector type vehicle lamp 30 to which the idea of "disassembling a condensing function" is applied. (A) Side view (only main optical surface) of vehicular lamp 10D (fifth embodiment) provided with a camber angle, (b) Top view (only main optical surface), (c) Formed by vehicular lamp 10D (D) Side view (only main optical surface) of vehicular lamp 10A of the second embodiment in which no camber angle is given, (e) Top view (only main optical surface) (F) It is an example of the light distribution pattern for low beams formed by 10 A of vehicle lamps of 2nd Embodiment. It is a top view (only main optical surface) for demonstrating the problem at the time of providing the camber angle. It is a figure for demonstrating the problem which appears in the light distribution pattern for low beams when a camber angle is provided. (A) Cross-sectional view at position B shown in FIG. 32 (only main optical surface), (b) Cross-sectional view at position C shown in FIG. 32 (only main optical surface). (A) It is a perspective view (only main optical surface) of vehicular lamp 10D of this embodiment, (b) It is a perspective view (only main optical surface) of vehicular lamp 10A of 2nd Embodiment. It is a front view of vehicle lamp 10E (6th Embodiment) to which the slant angle | corner was provided. (A) The figure for demonstrating the problem which appears in the light distribution pattern for low beams when a slant angle | corner is provided, (b) It is the figure which represented typically Fig.37 (a). (A) The figure for demonstrating that the problem (rotation) which appears in the light distribution pattern for low beams was suppressed, (b) The figure which represented typically Fig.38 (a). (A) Side view (main optical surface only) of vehicular lamp 10F (seventh embodiment) provided with camber angle and slant angle, (b) Top view (only main optical surface), (c) Vehicular lamp It is an example of the light distribution pattern for low beams formed by 10F. (A) Side view (only main optical surface) of vehicular lamp 10G of the first comparative example, (b) Top view (only main optical surface), (c) Example of light distribution pattern formed by vehicular lamp 10G It is. (A) Side view of vehicle lamp 10H of second comparative example (only main optical surface), (b) Top view (only main optical surface), (c) Example of light distribution pattern formed by vehicle lamp 10H It is. (A) An example of a low beam light distribution pattern formed by the vehicular lamp 10D of the fifth embodiment (also the vehicular lamp 10F of the seventh embodiment) when the camber angle θ1 is 30 °, (b) It is an example of the low beam light distribution pattern formed by the vehicular lamp 10D of the fifth embodiment (the same applies to the vehicular lamp 10F of the seventh embodiment) when the camber angle θ1 is 45 °. It is sectional drawing (only main optical surfaces) of 10 A of vehicle lamps of 2nd Embodiment. (A) An example in which, in the second emission surface 12A2b, the lower partial region 12A2b2 from which light upward to the horizontal is emitted is physically cut to leave the upper region 12A2b1, (b) the second emission surface The surface shape (for example, curvature) of the partial region 12A2b2 is set so that the light Ray2 from the light source 14 emitted from the lower partial region 12A2b2 of 12A2b becomes parallel or downward with respect to the first reference axis AX. In this example, the second emission surface 12A2b is adjusted and divided into an upper region 12A2b1 and a lower region 12A2b2. The second reference axis AX2 is a top view (only the main optical surface) of the vehicular lamp 10I that is inclined with respect to the first reference axis AX1 when viewed from above. It is a perspective view of vehicle lamp 10J (lens body 12J). (A) Top view of vehicle lamp 10J (lens body 12J), (b) Front view, (c) Side view. (A) Example of low beam light distribution pattern P _LO (synthetic light distribution pattern) formed by the vehicular lamp 10J (lens body 12J), (b) to (d) Each part of the distributed light constituting FIG. 48 (a) This is an example of patterns P _SPOT , P _MID , and P _WIDE . (A) Side view of first optical system (only main optical surface), (b) Top view of second optical system (only main optical surface), (c) Side view of third optical system (only main optical surface) It is. (A) Front view of first rear end portion 12A1aa of first lens portion 12A1, (b) AA sectional view (schematic diagram) in FIG. 50 (a), (c) BB in FIG. 50 (a). It is sectional drawing (schematic diagram). It is a front view (photograph) of the vehicular lamp 10J (lens body 12J) showing a state where multipoint light emission is performed. (A) Side view of the vehicular lamp 10E (lens body 12A) of the sixth embodiment (only main optical surface from which the first emission surface 12A1a is omitted), (b) Top view (main from which the first emission surface 12A1a is omitted) (D) optical surface only), (d) side view (only main optical surface with the first emission surface 12A1a omitted), and (e) top view (only main optical surface with the first emission surface 12A1a omitted). FIG. 52A is a top view in which the first emission surface 12A1a is added to FIG. 52B, and FIG. 52B is a top view in which the first emission surface 12A1a is added to FIG. (A) (b) It is an example of adjustment of the surface shape of a pair of left and right entrance surfaces 42a and 42b and / or a pair of left and right side surfaces 44a and 44b constituting the second optical system. (A) (b) It is an example of adjustment of the surface shape of the upper entrance surface 42c which comprises a 3rd optical system. It is a perspective view of the vehicle lamp 10K (lens body 12K) of 11th Embodiment. (A) Top view of vehicle lamp 10K (lens body 12K), (b) Front view, (c) Side view. (A) Example of low beam light distribution pattern P _LO (synthetic light distribution pattern) formed by vehicle lamp 10K (lens body 12K), (b) to (d) Each part of light distributed in FIG. 58 (a) This is an example of patterns P _SPOT , P _MID , and P _WIDE . (A) The side view of a 1st optical system, (b) It is an enlarged side view. (A) Top view of 2nd optical system, (b) Side view of 3rd optical system. (A) Front view of rear end portion 12Kaa of lens body 12K, (b) A1-A1 cross-sectional view (schematic diagram) in FIG. 61 (a), (c) B1-B1 cross-sectional view (schematic model) in FIG. Figure). (A)-(c) The incident surfaces 12a, 42a, 42b, 42c form a V shape (or a part of the V shape) that opens toward the front end 12Kbb in a top view and / or a side view. It is a figure showing having done. (A)-(c) It is a figure showing the optical path which external light RayCC and RayDD (for example, sunlight) which entered into the lens body 12K from the output surface 12Kb follow. FIG. 5 is a diagram illustrating an optical path in which a light source 50 that is regarded as external light is disposed in front of a lens body 12K, and light from the light source 50 that enters the lens body 12K from the exit surface 12Kb follows. (A) The longitudinal cross-sectional view showing the optical path which the light from the light source 14 which injected into the lens body 12K of 11th Embodiment follows, (b) It is a perspective view of 12L (modified example). (A)-(c) The figure showing the measurement result (luminance distribution) of the output surface 12Kb of lens body 12L (this modification), (d)-(f) Lens body of a comparative example (lens body of 11th Embodiment) It is a figure showing the measurement result (luminance distribution) of the output surface 12Kb of 12K). (A) A cross-sectional view showing an optical path followed by light from a light source 14 that has entered the lens body 12K of the eleventh embodiment, and (b) a perspective view of the lens body 12M (this modification). (A) (b) It is a perspective view of the lens coupling body 16L which connected the several lens body 12L which is the 1st modification of the lens body 12K of 11th Embodiment. It is a perspective view of vehicle lamp 10N (lens body 12N). (A) Top view of vehicle lamp 10N (lens body 12N), (b) Front view, (c) Side view. (A) Example of low beam light distribution pattern P _LO (synthetic light distribution pattern) formed by vehicle lamp 10N (lens body 12N), (b) Example of spot light distribution pattern P _SPOT , (c) Mid An example of the light distribution pattern P _{MID_L} , (d) an example of the mid light distribution pattern P _{MID_R} , and (e) an example of the wide light distribution pattern P _WIDE . (A) Front view of 1st rear end part 12A1aa of 1st lens part 12A1, (b) BB sectional drawing (schematic figure) of Fig.72 (a). It is a cross-sectional view (only main optical surface) of a 2nd optical system. It is a longitudinal cross-sectional view (only main optical surface) of a 2nd optical system. It is an expansion perspective view near the 2nd lower reflective surface 48a (and shade 48c) arranged on the left side. It is a side view (only main optical surface) of a 3rd optical system. (A) The figure showing the glare generated when the light source 14 (light emitting surface) is 1 mm square, and the relative positional relationship of the lens body 12J with respect to the light source 14 is shifted by +0.2 mm from the design value in the Y direction (vertical direction). (B) It is a figure showing that a glare does not generate | occur | produce in the mid light distribution pattern P _MID when the relative positional relationship of the lens body 12J with respect to the light source 14 is as a design value. It is a figure showing that a glare generate | occur | produces when the relative positional relationship of the lens body 12N with respect to the light source 14 has shifted | deviated from the design value to the Y direction (vertical direction). (A) The longitudinal cross-sectional view of the vehicle lamp 60 (lens body 62), (b) It is a front view. (A) Example of high beam light distribution pattern P _Hi (combined light distribution pattern) formed by vehicle lamp 60 (lens body 62), (b) Example of wide light distribution pattern P _{Hi_WIDE} , (c) For spot It is an example of the light distribution pattern P _{Hi_SPOT} . (A) Front view of rear end portion 62a of lens body 62 (in the vicinity of first incident surface 62a1, second incident surface 62a2 and reflecting surface 62a3 for wide light distribution pattern), (b) In a modification of lens body 72. It is a front view of a rear end portion 62a (a vicinity of a first incident surface 62a1, a second incident surface 62a2, and a reflecting surface 62a3 for a wide light distribution pattern) of a certain lens body 72C. It is a longitudinal cross-sectional view of the lens body 62 (modified example). (A) The figure showing a mode that the light from the light source 14 which injects into the inside of the lens body 62 from the entrance surface A (1st entrance surface 62a1 and 2nd entrance surface 62a2) for wide light distribution patterns spreads in a horizontal direction. (B) The light from the light source 14 incident on the inside of the lens body 62 from the incident surface 62a5 for the spot light distribution pattern is internally reflected and collimated by the reflection surface 62a6 for the spot light distribution pattern. FIG. It is a longitudinal cross-sectional view of the exit surface 62b2 (modified example) for the spot light distribution pattern. It is a longitudinal cross-sectional view of the lens body 62 (modified example). It is a longitudinal section of lens body 62A (modification). It is a longitudinal section of rear end part 62a of lens body 62B (modification). (A) The perspective view seen from the front diagonally downward of the vehicle lamp 70 (lens body 72), (b) The perspective view seen from the back diagonally upward of the vehicle lamp 70 (lens body 72). (A) Top view of vehicle lamp 70 (lens body 72), (b) Front view, (c) Side view. It is a disassembled perspective view of the vehicle lamp 70 (lens body 72). (A) An example of a wide light distribution pattern P _{Hi_WIDE} formed by the vehicular lamp 70 (lens body 72), and (b) an example of a spot light distribution pattern P _{Hi_SPOT} . It is the perspective view seen from back diagonally upward of the 3rd lens part _62Hi . 2 is a longitudinal sectional view (schematic diagram) of a lens body 72. (A) Light Ray _{Hi_WIDE} from the third light source 14 _Hi incident on the inside of the third lens portion 62 _Hi is _{transmitted from} the front end portions 12A1bb (semi-columnar emission surface 12A2b) of the first and second lens portions 12N _Lo1 and 12N _Lo2. It is a side view showing a mode that it radiates, and (b) is a top view. (A) The side view showing a mode that light Ray _{Hi_SPOT} from the 3rd light source 14 _Hi which injected into the inside of the 3rd lens part 62 _{Hi radiate |} emits from the output surface 62b2 for light distribution patterns for spots, (b) It is a top view. . It is a top view of 72 A of lens bodies (modification), (b) It is a front view. (A) Front view of rear end portion 12A1aa of lens body 12N constituting vehicle lamp 10P, (b) AA sectional view (schematic diagram) in FIG. 97 (a), (c) FIG. 97 (a). It is BB sectional drawing (schematic diagram). In the vehicle lamp 10N of the twelfth embodiment, a diagram showing the state of light Ray _OUT from the light source 14 extending in the downward direction is not incident within the lens body 12N. It is an example (top view) of reflective surface RefA (modification). Each of the reflective areas Ref _SPOT, Ref _{MID_L,} diagrams reflected light showing the area to be light distribution from Ref _{MID_R.} (A) In the vehicular lamp 10N1, a view showing that the light Ray _OUT from the light source 14 spreading in the vertical direction does not enter the inside of the lens body 12N1, (b) Reflected with respect to the vehicular lamp 10N1 in FIG. It is the figure which added surface Ref (RefA). (A) In the vehicular lamp 10 according to the first embodiment (the vehicular lamp 10A according to the second embodiment), the light Ray _OUT from the light source 14 spreading in the vertical and horizontal directions does not enter the lens bodies 12 and 12A. FIG. 10B is a diagram in which a reflection surface RefB is added to the vehicular lamps 10 and 10A of FIG. It is a perspective view of the vehicle lamp 64 (lens body 66). (A) Rear view of lens body 66 _L1 , (b) Top view, (c) Front view, (d) Left side view. (A) Right side view of lens body 66 _L1 , (b) Bottom view. (A), an example of (b) a light distribution pattern for ADB formed by the vehicular lamp 64 (lens body _{66) P L1 ~P L3, P} R1 ~P R3. (A) The longitudinal cross-sectional view of the lens body 66, (b) It is a cross-sectional view. It is an example (modification) of ADB light distribution patterns P _{L1 to} P _L3 and P _{R1 to} P _R3 formed by the vehicular lamp 64 (lens body 66). It is a perspective view of the vehicle lamp 74 (lens body 76). It is a rear view of the vehicular lamp 74 (lens body 76), (b) front view, (c) bottom view, (d) right side view. This is an example of the low beam light distribution pattern P _Lo formed by the first lens unit 12N and the ADB light distribution patterns P _{L1 to} P _L3 and P _{R1 to} P _R3 formed by the second lens unit 66. It is a perspective view (only main optical surface) of vehicular lamp 10Q (lens body 12Q). (A) is a side view (only main optical surface) of the vehicular lamp 10Q (lens body 12Q), and (b) is a top view (only main optical surface). (A) Front view (only main optical surface) of vehicular lamp 10Q (lens body 12Q), (b) Rear view (only main optical surface). It is a figure showing a mode that the light emitted from the focus _F12A4 (or the reference point corresponded to the focus _F12A4 ) is collimated by 1st intermediate | middle output surface 12A1a and intermediate | middle incident surface 12A2a. (A) Example of final emission surface 12A2b configured as a plane having a planar shape (for example, a planar shape having a rectangular outer shape) orthogonal to first reference axis AX1 and extending in the horizontal direction, (b) its lower edge Example of final emission surface 12A2b arranged in a posture inclined obliquely upward and rearward so that is positioned forward with respect to the upper edge, (c) a slightly convex surface toward the front (see FIG. 107 (c)) This is an example of the final emission surface 12A2b configured as follows. (A) In 16th Embodiment, the _{figure showing a} mode that the light emitted from the focus _F12A4 (or reference point corresponded to the focus _F12A4 ) is collimated by 1st intermediate | middle exit surface 12A1a and intermediate | middle incident surface 12A2a, (b) ) In the second embodiment, the light emitted from the focal point F _12A4 (or a reference point corresponding to the focal point F _12A4 ) is collimated by the first intermediate emission surface 12A1a and the intermediate incident surface 12A2a. It is a perspective view of a pair of left and right second intermediate exit surfaces 46a, 46b (modified example). (A) A schematic longitudinal sectional view of a vehicular lamp 10J (lens body 12J) according to a tenth embodiment to which the concept that “the final emission surface (second emission surface 12A2b) is configured as a plane surface” is applied. b) A schematic longitudinal section of the vehicular lamp 10N (lens body 12N) of the twelfth embodiment shown in FIG. 69, to which the concept that “the final emission surface (second emission surface 12A2b) is configured as a planar surface” is applied. FIG. It is a longitudinal cross-sectional view of the vehicular lamp 200 described in Patent Document 1. It is a top view showing a mode that a plurality of vehicular lamps 200 (a plurality of lens bodies 220) are arranged in a line.

Hereinafter, the vehicle lamp which is 1st Embodiment of this invention is demonstrated, referring drawings.

  FIG. 1 is a longitudinal sectional view of a vehicular lamp 10 according to a first embodiment of the present invention.

As shown in FIG. 1, the vehicular lamp 10 of the present embodiment includes a lens body 12, a light source 14 disposed in the vicinity of the incident surface 12 a of the lens body 12, and the like, and a virtual vertical screen (vehicle) It is configured as a vehicle headlamp that forms a low beam light distribution pattern P1 including cut-off lines CL1 to CL3 on the upper edge shown in FIG. ing.

2A is a perspective view of the lens body 12 viewed from the front, FIG. 2B is a perspective view of the lens body 12 viewed from the rear, FIG. 3A is a top view of the lens body 12, and FIG. FIG. 3B is a bottom view, and FIG. 3C is a side view.

As shown in FIG. 1, the lens body 12 is a lens body having a shape extending along a first reference axis AX1 extending in the horizontal direction, and includes an entrance surface 12a, a reflection surface 12b, a shade 12c, an exit surface 12d, and an entrance surface 12a. The reference point F in the optical design arranged in the vicinity is included. The entrance surface 12a, the reflection surface 12b, the shade 12c, and the exit surface 12d are arranged in this order along the first reference axis AX1. The material of the lens body 12 may be polycarbonate, other transparent resin such as acrylic, or glass.

A dotted line with an arrow at the tip in FIG. 1 represents an optical path of light from the light source 14 (more precisely, the reference point F) that has entered the lens body 12.

The main functions of the lens body 12 are firstly to capture the light from the light source 14 into the lens body 12, and secondly to proceed toward the exit surface 12d of the light captured into the lens body 12. The outgoing surface 12 is generated by the direct light RayA and the reflected light RayB that is internally reflected by the reflective surface 12b.
The light intensity distribution (light source image) formed in the vicinity of the focal point F _12d of d (lens portion) is reversely projected to form a low beam light distribution pattern including a cutoff line at the upper edge.

4A shows a state in which light from the light source 14 (precisely, the reference point F) enters the incident surface 12a, and FIG. 4B shows light from the light source 14 that has entered the lens body 12. FIG. (Direct light RayA
FIG.

The incident surface 12a is formed at the rear end of the lens body 12, and is light from the light source 14 (precisely, the reference point F in optical design) disposed in the vicinity of the incident surface 12a (see FIG. 4A). ) Is refracted and incident on the inside of the lens body 12 (for example, a free-form curved surface convex toward the light source 14), and light (direct light RayA) incident on the lens body 12 is at least in the vertical direction. , The surface shape is configured so as to converge toward the second reference axis AX2 toward the shade 12c (see FIG. 4B). The second reference axis AX2 passes through the center of the light source 14 (precisely, the reference point F) and a point near the shade 12c, and is inclined obliquely forward and downward with respect to the first reference axis AX1 ( (See FIG. 1).

The light source 14 is, for example, a metal substrate (not shown), white L mounted on the surface of the substrate.
A semiconductor light emitting element (not shown) such as an ED light source (or white LD light source) is provided. The number of semiconductor light emitting elements may be one or more. The light source 14 is a white LED light source (or white L
A light source other than a semiconductor light emitting element such as a (D light source) may be used. The light source 14 is in the vicinity of the incident surface 12a of the lens body 12 in a posture in which the light emitting surface (not shown) is directed obliquely forward and downward, that is, in a posture in which the optical axis AX ₁₄ of the light source 14 coincides with the second reference axis AX2. (Near reference point F). The light source 14 is configured so that the optical axis AX ₁₄ of the light source 14 does not coincide with the second reference axis AX 2 (for example, the attitude in which the optical axis AX ₁₄ of the light source 14 is disposed in the horizontal direction). You may arrange | position in the entrance plane 12a vicinity (reference point F vicinity).

When the light source 14 is a semiconductor light emitting element (for example, a white LED light source), the directivity characteristic of light emitted from the light source 14 (light emitting surface) is Lambertian and can be expressed as I (θ) = I0 × cos θ. This represents the spread of light emitted by the light source 14. However, I (θ) represents the light intensity from the optical axis AX ₁₄ of the angle theta inclined direction of the light source 14, I0 represents the intensity on the optical axis AX _14. In the light source 14, the luminous intensity on the optical axis AX ₁₄ (θ = 0) is maximized.

FIG. 5 shows an example (transverse sectional view) of the incident surface 12a, and FIG. 6 shows another example (transverse sectional view) of the incident surface 12a.
It is.

As shown in FIG. 5, in the horizontal direction, the incident surface 12 a condenses light from the light source 14 that has entered the lens body 12 (direct light RayA) toward the first reference axis AX1 toward the shade 12 c. Thus, the surface shape is configured. In addition, as shown in FIG. 6, the incident surface 12a is light (direct light RayA) from the light source 14 that has entered the lens body 12 in the horizontal direction.
) May be configured so that the light is parallel to the reference axis AX1.

The degree of horizontal diffusion of the low beam light distribution pattern can be freely adjusted by adjusting the shape of the incident surface 12a (for example, the curvature of the incident surface 12a in the horizontal direction).

FIG. 7A and FIG. 7B are diagrams for explaining the distance between the incident surface 12 a and the light source 14.

By shortening the distance between the incident surface 12a and the light source 14 (see FIG. 7B), the incident surface 1
The light source image is smaller than when the distance between 2a and the light source 14 is increased (see FIG. 7A). As a result, the maximum luminous intensity of the luminous intensity distribution (and the low beam light distribution pattern) formed in the vicinity of the focal point F _{12d of} the emission surface 12d (lens portion) can be increased.

Further, by shortening the distance between the incident surface 12a and the light source 14 (see FIG. 7B), the distance between the incident surface 12a and the light source 14 is increased (see FIG. 7A). As compared with the above, light from the light source 14 taken into the lens body 12 increases (β> α). As a result, a highly efficient lens body is obtained.

The reflecting surface 12b is a planar reflecting surface extending in the horizontal direction from the lower end edge of the incident surface 12a toward the front. The reflective surface 12b is a reflective surface that totally reflects the light incident on the reflective surface 12b out of the light from the light source 14 that has entered the lens body 12, and metal deposition is not used. Of the light from the light source 14 that has entered the lens body 12, the light that has entered the reflecting surface 12 b is internally reflected by the reflecting surface 12 b and travels toward the exit surface 12 d, and is refracted by the exit surface 12 d and travels in the road surface direction. That is, the reflected light RayB internally reflected by the reflecting surface 12b is folded back at the cutoff line and superimposed on the light distribution pattern below the cutoff line. This
A cut-off line is formed at the upper edge of the low beam light distribution pattern.

The reflective surface 12b may be a planar reflective surface that is inclined obliquely forward and downward with respect to the first reference axis AX1 from the lower end edge of the incident surface 12a (see FIG. 14B). The advantage of arranging the reflecting surface 12b so as to be inclined with respect to the first reference axis AX1 will be described later.

  A shade 12c extending in the left-right direction is formed at the tip of the reflecting surface 12b.

  FIG. 8 is a diagram for explaining the role of the shade 12c.

As shown in FIG. 8, the main role of the shade 12 c is to make the light source 1 incident inside the lens body 12.
Shields the portion of the light from the 4, formed on the focal F _12d near the exit face 12d (lens unit), luminous intensity distribution including side corresponding to the cut-off line defined in the lower edge by the shade 12c (the light source image) It is to be.

FIG. 9A is a schematic view of the shade 12c viewed from the position of the light source 14, and FIG. 9B is FIG. 2A.
FIG. 9C is an enlarged perspective view of the reflecting surface 12b (including the shade 12c) shown in FIG. 2, and FIG. 9C is a top view of the reflecting surface 12b (including the shade 12c) shown in FIG.

As shown in FIGS. 2A and 9A to 9C, the shade 12c includes a side e1 corresponding to the left horizontal cutoff line, a side e2 corresponding to the right horizontal cutoff line, and the left horizontal. An edge e3 corresponding to the oblique cut-off line connecting the cut-off line and the right horizontal cut-off line is included.

The reflective surface 12b is a first reflective region 12b1 between the lower edge of the incident surface 12a and the side e1 corresponding to the left horizontal cutoff line, and between the lower edge of the incident surface 12a and the side e2 corresponding to the right horizontal cutoff line. The second reflection region 12b2, and the first reflection region 12b1 and the second reflection region 1
The third reflection region 12b3 between 2b2 is included.

The first reflection region 12b1 is gradually curved upward as it approaches the side e1 corresponding to the left horizontal cut-off line from the lower edge of the incident surface 12a, while the second reflection region 12b2 is
It extends in the horizontal direction from the lower end edge of the incident surface 12a toward the front.

As a result, the side e1 corresponding to the left horizontal cut-off line is arranged at a level higher than the side e2 corresponding to the right horizontal cut-off line in the vertical direction (in the case of right-hand traffic).
Of course, the side e1 corresponding to the left horizontal cutoff line may be arranged at a position one step lower than the side e2 corresponding to the right horizontal cutoff line in the vertical direction (in the case of left-hand traffic).

The shade 12c has a groove corresponding to the left horizontal cut-off line, a groove corresponding to the right horizontal cut-off line, and an oblique cut-off line connecting the left horizontal cut-off line and the right horizontal cut-off line at the tip of the reflecting surface 12b. It can also form by forming the groove part containing the groove part corresponding to.

10 (a) to 10 (c) show a modified example (side view) of the shade 12c. The shade 12c may extend upward from the tip of the reflecting surface 12b in a side view (see FIG. 10A), or may extend obliquely upward and forward (FIG. 1).
0 (see (b)), and may be curved and extended toward the upper front obliquely (see FIG. 10 (c)). The shade 12c is not limited to these, and may have any shape as long as a part of the light from the light source 14 entering the lens body 12 is shielded so as not to travel toward the exit surface 12d. In addition, you may use the light-shielded light for another light distribution and light guide.

As shown in FIG. 1, the exit surface 12 d is internally reflected by the direct light RayA that travels toward the exit surface 12 d and the reflection surface 12 b of the light from the light source 14 that has entered the lens body 12. A lens in which the focal point F _12d is set in the vicinity of the shade 12c (for example, near the center in the left-right direction of the shade 12c) on the surface from which the reflected light RayB traveling toward 12d is emitted (for example, a convex surface convex forward). It is configured as a part. The exit surface 12d is formed by an exit surface 12d (direct light RayA and reflected light RayB traveling toward the exit surface 12d.
The light intensity distribution (light source image) formed in the vicinity of the focal point F _12d of the lens unit is reversely projected to form a low beam light distribution pattern including a cutoff line at the upper edge.

Note that by increasing the distance (focal length) between the shade 12c and the exit surface 12d, the light source image becomes smaller than when the distance (focal length) between the shade 12c and the exit surface 12d is shortened. . As a result, the light intensity distribution (near the focal point F _{12d of} the exit surface 12d (lens portion)) (
And the maximum luminous intensity of the low beam distribution pattern) can be further increased.

Moreover, compared with the case where the distance between the output surface 12d and the light source 14 (or shade 12c) is lengthened by shortening the distance between the output surface 12d and the light source 14 (or shade 12c),
The direct light RayA and the reflected light B taken in the exit surface 12d increase. As a result, efficiency increases.

The degree of diffusion in the horizontal and vertical directions of the low beam light distribution pattern depends on the exit surface 12d.
It can be freely adjusted by adjusting the surface shape.

A surface that connects the leading edge of the reflecting surface 12b and the lower edge of the emitting surface 12d is an inclined surface that extends obliquely forward and downward from the leading edge of the reflecting surface 12b. In addition, the surface which connects the front-end edge of the reflective surface 12b and the lower end edge of the output surface 12d is not limited to this, and any surface that does not block the direct light RayA and the reflected light RayB traveling toward the output surface 12d. It may be a surface.
Similarly, the surface connecting the upper end edge of the entrance surface 12a and the upper end edge of the exit surface 12d is the entrance surface 12a.
A planar surface extending in the horizontal direction between the upper edge of the light emitting surface and the upper edge of the exit surface 12d.
The surface connecting the upper end edge of the incident surface 12a and the upper end edge of the output surface 12d is not limited to this,
Any surface may be used as long as it does not block the direct light RayA and the reflected light RayB traveling toward the exit surface 12d.

In the lens body 12 configured as described above, the light that has entered the lens body 12 from the incident surface 12a is condensed toward the second reference axis AX2 toward the shade 12c in the vertical direction as shown in FIG. For example, the light is condensed at the center of the shade 12c). And when the surface shape of the incident surface 12a is comprised as shown in FIG. 5, the light which injected into the lens body inside the incident surface 12a is toward the shade 12c regarding a horizontal direction, as shown in FIG. First reference axis AX1
The light is condensed toward the side (for example, the light is condensed at the center of the shade 12c).

As described above, the direct light RayA collected in the vertical direction and the horizontal direction and the reflected light RayB internally reflected by the reflecting surface 12b travel toward the emitting surface 12d and are emitted from the emitting surface 12d. At that time, the side corresponding to the cut-off line defined by the shade 12c is formed at the lower end edge in the vicinity of the focal point F _12d of the exit surface 12d (lens portion) by the direct light RayA and the reflected light RayB traveling toward the exit surface 12d. A luminous intensity distribution (light source image) is formed. Then, the exit surface 12d reversely projects this luminous intensity distribution, and on the virtual vertical screen, FIG.
A low beam light distribution pattern P1 including a cut-off line is formed on the upper edge shown in a).

The low-beam light distribution pattern P1 has a relatively high central luminous intensity and excellent distant visibility. This is because the light source 14 is disposed in the vicinity of the incident surface 12a (in the vicinity of the reference point F) of the lens body 12 in such a posture that the optical axis AX ₁₄ of the light source 14 coincides with the second reference axis AX2. intensity (luminosity) is high light on axis AX ₁₄ of the light (direct light) is condensed on the second reference axis AX2 closer toward the shade 12c (e.g., condensed at the center of the shade 12c) be due to is there.

In addition, by adjusting the surface shape (for example, curvature) of the entrance surface 12a and / or the exit surface 12d, as shown in FIG. 11B, a low beam light distribution pattern P2 diffused in the horizontal direction is formed. You can also.

Further, by increasing the inclination of the second reference axis AX2 (see the angle θ shown in FIG. 1) with respect to the first reference axis AX1, the lower edge of the low beam light distribution patterns P1, P2 can be extended downward.

On the other hand, when the surface shape of the incident surface 12a is configured as shown in FIG. 6, the light that has entered the lens body 12 from the incident surface 12a has a first reference axis in the horizontal direction as shown in FIG. A
The light is parallel to X1.

As described above, the direct light RayA collected in the vertical direction and parallel to the horizontal direction and the reflected light RayB internally reflected by the reflection surface 12b travel toward the emission surface 12d and are emitted from the emission surface 12d. . At that time, the direct light RayA and reflected light RayB traveling toward the exit surface 12d, the focal F _12d near the exit face 12d (lens unit), corresponding to the cutoff line CL1~CL3 defined in the lower edge by the shade 12c A luminous intensity distribution (light source image) including a side to be formed is formed. The exit surface 12d reversely projects this luminous intensity distribution to form a low beam light distribution pattern P3 including cut-off lines CL1 to CL3 at the upper edge shown in FIG. 11C on the virtual vertical screen. The low beam light distribution pattern P3 shown in FIG. 11C is more diffused in the horizontal direction than the low beam light distribution pattern P1 shown in FIG.

Next, the relationship between the light source image by the light from the light source 14 that has entered the lens body 12 and the low beam light distribution pattern will be described.

FIG. 12 is a diagram for explaining a light source image by light from the light source 14 in each of the cross sections Cs1 to Cs3.

As shown in FIG. 12, the outer shapes of the light source images I _Cs1 and I _Cs2 in the cross sections Cs1 and Cs2 are as follows:
It is the same as the outer shape of the light source (similar to the outer shape of the light source 14 and large as a light source image).

On the other hand, the light source image I _Cs3 in the cross section Cs3 after passing through the reflecting surface 12b and the shade 12c.
The outer shapes of the cut-off lines CL1 to C1 are defined by the shade 12c at the lower edge.
The sides e1, e2, and e3 corresponding to L3 are included. The light source image I _Cs3 is output from the emission surface 12.
Inverted by the action of d (lens portion), the edges e1, e2, and e3 corresponding to the cut-off lines CL1 to CL3 defined by the shade 12c are included at the upper end edge.

The low-beam light distribution patterns P1 to P3 shown in FIGS. 11A to 11C have sides e corresponding to the cut-off lines CL1 to CL3 defined by the shade 12c at the upper edge.
Since it is formed based on the light source image including 1, e2, e3, it includes clear cut-off lines CL1, CL2, CL3 at the upper edge.

Next, regarding the advantage of disposing the reflecting surface 12b with respect to the first reference axis AX1,
The description will be made in comparison with the case where the reflecting surface 12b is arranged in the horizontal direction.

The first advantage is that stray light can be reduced and efficiency can be increased as compared with the case where the reflecting surface 12b is arranged in the horizontal direction.

That is, as shown in FIG. 13A, when the reflecting surface 12b is arranged in the horizontal direction, the reflected light RayB ′ internally reflected by the reflecting surface 12b travels in the direction not entering the exit surface 12d. It becomes. As a result, efficiency is reduced.

On the other hand, as shown in FIG. 13B, when the reflecting surface 12b is inclined with respect to the first reference axis AX1, the reflection is reflected from the reflecting surface 12b and proceeds toward the emitting surface 12d. The light RayB increases, and the light captured by the emission surface 12d (the reflected light reflected from the inner surface by the reflection surface 12b) increases. As a result, the stray light can be reduced and the efficiency can be increased as compared with the case where the reflecting surface 12b is arranged in the horizontal direction.

In the simulation performed by the inventors of the present application, when the reflecting surface 12b is disposed with an inclination of 5 ° with respect to the first reference axis AX1, the efficiency increases by 33.8%, and when the reflection surface 12b is disposed with an inclination of 10 °,
Efficiency increased by 60%.

The second advantage is that the lens body 12 can be reduced in size as compared with the case where the reflecting surface 12b is arranged in the horizontal direction.

That is, as shown in FIG. 13A, when the reflecting surface 12b is arranged in the horizontal direction, the reflected light RayB ′ internally reflected by the reflecting surface 12b travels in the direction not entering the exit surface 12d. It becomes. The exit surface 12d can capture stray light RayB 'by extending it upward as shown in FIG. 14 (a), but the exit surface 12d becomes larger as it extends upward.

On the other hand, as shown in FIG. 14B, when the reflecting surface 12b is inclined with respect to the first reference axis AX1, the exit surface 12d has more light (without extending it upward). The reflected light RayB) internally reflected by the reflecting surface 12b can be taken in. As a result, as compared with the case where the reflecting surface 12b is arranged in the horizontal direction, it is possible to reduce the size of the exit surface 12d (and thus the lens body 12).

In the simulation performed by the inventors of the present application, when the reflecting surface 12b is inclined at 5 ° with respect to the first reference axis AX1, the height A (light emitted from the emitting surface 12d) shown in FIG. 14 (a) is reduced by 8% compared to the case shown in FIG. 14 (a), and the height A shown in FIG. 14 (b) is shown in FIG. Compared to the case shown, it decreased by 18.1%.

Next, the second reference axis AX2 is arranged so as to be inclined with respect to the first reference axis AX1, and the light from the light source 14 incident on the lens body 12 enters the second reference axis toward the shade 12c at least in the vertical direction. Regarding the advantage of condensing near AX2, the second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the lens body 12 is at least in the vertical direction.
A description will be given in comparison with the case where light is condensed toward the second reference axis AX2 toward the shade 12c.

This advantage is that the second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the lens body 12 is directed toward the shade 12c at least in the vertical direction.
Compared to the case of focusing near 2, it is possible to achieve stray light reduction and higher efficiency.

That is, as shown in FIG. 15 (a), the second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the lens body 12 is at least in the vertical direction with respect to the shade 12c.
The light source 1 incident on the inside of the lens body 12 when being condensed toward the second reference axis AX2
Most of the light from 4 is blocked by the shade 12c. As a result, efficiency is greatly reduced. Further, in FIG. 15A, assuming that a reflecting surface corresponding to the reflecting surface 12b is added, the reflected light that is internally reflected by the reflecting surface becomes stray light that travels in a direction not incident on the exit surface 12d.

On the other hand, as shown in FIG. 15B, the second reference axis AX2 is inclined with respect to the first reference axis AX1, and the light from the light source 14 incident on the lens body 12 is at least vertically. When the light is condensed toward the second reference axis AX2 toward the shade 12c, the exit surface 1
The light taken in by 2d (the reflected light RayB internally reflected by the reflecting surface 12b) increases. As a result, the second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the lens body 12 is condensed toward the second reference axis AX2 toward the shade 12c at least in the vertical direction. Compared to the above, the stray light can be reduced and the efficiency can be increased.

As described above, according to the present embodiment, firstly, it is possible to provide the lens body 12 and the vehicle lamp 10 using the lens body 12 in which the reflective surface by metal vapor deposition that causes a cost increase is omitted. Second, the lens body 12 that can prevent the lens body 12 from melting or the output of the light source 14 from being lowered due to the heat generated in the light source 14 and a vehicle lamp 10 using the lens body 12 are provided. can do.

The light source 1 can omit the reflective surface by metal vapor deposition which causes an increase in cost.
The light from 4 is not a reflection surface by metal vapor deposition, but the refraction and reflection surface 12b at the incident surface 12a.
This is because it is controlled by the internal reflection at.

The reason why the lens body 12 can be prevented from melting or the output of the light source 14 from being lowered due to the heat generated by the light source 14 is that the incident surface 12a is formed at the rear end of the lens body 12. This is because the light source 14 is disposed outside the lens body 12 (that is, at a position separated from the incident surface 12a of the lens body 12).

Next, a vehicular lamp that is a second embodiment of the present invention will be described with reference to the drawings.

16 is a perspective view of a vehicular lamp 10A according to a second embodiment of the present invention, FIG. 17A is a longitudinal sectional view, and FIG. 17B is a state in which light from the light source 14 travels inside the lens body 12A. FIG.

When comparing the vehicular lamp 10A of the present embodiment with the vehicular lamp 10 of the first embodiment,
The two differ mainly in the following points.

First, in the vehicular lamp 10 according to the first embodiment, the light exit surface 12d, which is the final light exit surface of the lens body 12, is mainly responsible for horizontal light collection and vertical light collection. On the other hand, in the vehicular lamp 10A according to the present embodiment, the first lens unit 12 mainly collects light in the horizontal direction.
The first emission surface 12A1a of A1 is in charge, and the second emission surface 12A2b of the second lens portion 12A2, which is the final emission surface of the lens body 12A, is mainly in charge of condensing in the vertical direction. That is, the vehicle lamp 10A of the present embodiment adopts the concept of “decomposing the light collecting function”.

Secondly, in the vehicular lamp 10 according to the first embodiment, the light exit surface 12d, which is the final light exit surface of the lens body 12, is hemispherical in order to perform horizontal light collection and vertical light collection. (Refer to FIG. 2 (a)), the vehicular lamp 10A according to the present embodiment is in charge of condensing in the horizontal direction. The first light exit surface 12A1a of the lens portion 12A1 is configured as a semi-cylindrical surface (semi-cylindrical refractive surface) extending in the vertical direction (see FIG. 23), and is in charge of condensing light in the vertical direction. The second exit surface 12A2b of the second lens portion 12A2, which is the final exit surface of 12A, is configured as a semi-cylindrical surface (semi-cylindrical refractive surface) extending in the horizontal direction (see FIG. 23).

Third, in the vehicular lamp 10 according to the first embodiment, the exit surface 12d, which is the final exit surface of the lens body 12, is configured as a hemispherical surface (semi-columnar refractive surface). Even if a plurality of vehicle lamps 10 (a plurality of lens bodies 12) are arranged in a line (see FIG. 18), the appearance of the dots is continuous, and the vehicle lamp has a sense of unity that extends in a line in a predetermined direction. On the other hand, in the vehicular lamp 10A of the present embodiment, the second exit surface 12A2b, which is the final exit surface of the lens body 12A, extends in the horizontal direction. As a result of being configured as a columnar surface (a semi-cylindrical refractive surface), a plurality of vehicle lamps 10A
By arranging (a plurality of lens bodies 12A) in a line (see FIGS. 19A and 19B), a vehicular lamp (lens coupling body 16) having a sense of unity extending in a line shape in the horizontal direction can be obtained. )
The point that can be configured. FIG. 18 is a top view showing a state in which a plurality of vehicle lamps 10 (a plurality of lens bodies 12) of the first embodiment are arranged in a line.

Other than that, it is the structure similar to the vehicle lamp 10 of the said 1st Embodiment. Hereinafter, the difference from the vehicular lamp 10 of the first embodiment will be mainly described, and the vehicular lamp 10 of the first embodiment will be described.
The same components as those in FIG.

As shown in FIGS. 16 and 17B, the vehicular lamp 10A according to the present embodiment includes a light source 14, a first lens unit 12A1, and a second lens unit 12A2, and the light from the light source 14 is converted into the first lens. The first lens unit 1 enters the first lens unit 12A1 from the first incident surface 12a of the unit 12A1.
After being partially shielded by the shade 12c of 2A1, the light exits from the first exit surface 12A1a of the first lens portion 12A1, and further from the second entrance surface 12A2a of the second lens portion 12A2.
A virtual vertical screen facing the front of the vehicle (disposed approximately 25 m forward from the front of the vehicle) by entering the inside of the lens 12A2 and exiting from the second exit surface 12A2b of the second lens 12A2 and irradiating forward. The shade 12c is placed on the upper edge shown in FIG.
Low beam distribution pattern P including cut-off lines CL1 to CL3 defined by
Lens body 12A configured to form 1a and the like (corresponding to the predetermined light distribution pattern of the present invention)
It is comprised as a vehicle headlamp provided with.

21A is a top view of the lens body 12A of the second embodiment, FIG. 21B is a side view, and FIG.
1 (c) is a bottom view. FIG. 22 shows an example (cross-sectional view) of the first incident surface 12a, and FIG.
It is a perspective view for demonstrating lens body 12A (1st output surface 12A1a, 2nd entrance surface 12A2a, and 2nd output surface 12A2b) of embodiment.

As shown in FIGS. 17A and 21A to 21C, the lens body 12A is a lens body having a shape extending along a first reference axis AX extending in the horizontal direction. Part 12A1, second lens part 12A2, and connecting part 12A3 connecting first lens part 12A1 and second lens part 12A2.

The first lens unit 12A1 includes a first incident surface 12a, a reflecting surface 12b, a shade 12c, a first emitting surface 12A1a, and a reference point F in optical design disposed in the vicinity of the first incident surface 12a. The second lens portion 12A2 includes a second entrance surface 12A2a and a second exit surface 12A2b. First entrance surface 12a, reflection surface 12b, shade 12c, first exit surface 12A1a, second
The entrance surface 12A2a and the second exit surface 12A2b are arranged in this order along the first reference axis AX1.

The first lens unit 12A1 and the second lens unit 12A2 are coupled by a coupling unit 12A3.

The connecting portion 12A3 is such that the first lens portion 12A1 and the second lens portion 12A2 are surrounded by the first exit surface 12A1a, the second incident surface 12A2a, and the connecting portion 12A3 (the other portions are opened). The space S is connected in a formed state.

The lens body 12A is integrally molded by injecting a transparent resin such as polycarbonate or acrylic into a mold, and cooling and solidifying (by injection molding).

The space S is formed by a mold having a pulling direction opposite to the connecting portion 12A3 (see an arrow in FIG. 17A). In order to smoothly remove the mold, the first exit surface 12A1a and the second entrance surface 12A2a are set with draft angles α and β (also referred to as draft angle, preferably 2 ° or more). Accordingly, it is possible to perform die cutting by upper and lower punching at the time of molding, and the lens body 12 (and a lens coupling body 16 described later) can be manufactured at a low cost by one die cutting (without using a slide). The material of the lens body 12A may be a glass other than a transparent resin such as polycarbonate or acrylic.

The first incident surface 12a is formed at the rear end of the first lens portion 12A1, and the first incident surface 12a.
a surface (for example, a free-form surface convex toward the light source 14) on which light from the light source 14 (precisely, the reference point F in the optical design) is refracted and enters the first lens unit 12A1. )so,
The light from the light source 14 that has entered the first lens unit 12A1 is shade 1 in the vertical direction.
The light is condensed toward the second reference axis AX2 toward 2c (see FIG. 17B), and the light is condensed toward the first reference axis AX1 toward the shade 12c in the horizontal direction (see FIG. 22). Further, the surface shape is configured. The first reference axis AX is a point near the shade 12c (for example,
It passes through the focal point F _12A4 ) and extends in the vehicle longitudinal direction. The second reference axis AX2 passes through the center of the light source 14 (more precisely, the reference point F) and a point in the vicinity of the shade 12c (for example, the focal point F _12A4 ), and obliquely forward with respect to the first reference axis AX1. Inclined downward. Note that the first incident surface 12a is such that the light from the light source 14 that has entered the first lens portion 12A1 is parallel to the reference axis AX1 in the horizontal direction (see FIG. 6). The shape may be configured.

The first emission surface 12A1a is light from the light source 14 that is emitted from the first emission surface 12A1a,
That is, the first emission surface 12 out of the light from the light source 14 that has entered the first lens unit 12A1.
The first light exit surface 12 is reflected by the direct light traveling toward A1a and internally reflected by the reflection surface 12b.
This is a surface for collecting the reflected light traveling toward A1a in the horizontal direction (corresponding to the first direction of the present invention). Specifically, as shown in FIG. 23, the cylindrical axis is configured as a semi-cylindrical surface extending in the vertical direction. The focal line of the first emission surface 12A1a extends in the vertical direction in the vicinity of the shade 12c.

The second incident surface 12A2a is formed at the rear end portion of the second lens portion 12A2, and the first emission surface 12 is formed.
The surface from which the light from the light source 14 emitted from A1a enters the second lens portion 12A2, for example, is configured as a planar surface. Of course, not limited to this, the second incident surface 12A2
a may be configured as a curved surface.

The second emission surface 12A2b is a surface that condenses light from the light source 14 emitted from the second emission surface 12A2b in the vertical direction (corresponding to the second direction of the present invention). Specifically, as shown in FIG. 23, the cylindrical axis is configured as a semi-cylindrical surface extending in the horizontal direction. The focal line of the second exit surface 12A2b extends in the horizontal direction in the vicinity of the shade 12c.

The focal point F _{12A4 of the} lens 12A4 composed of the first emission surface 12A1a and the second lens portion 12A2 (second incidence surface 12A2a and second emission surface 12A2b) having the above _{configuration} is the focal point F _12d of the emission surface 12d of the first embodiment. In the same manner as above, it is set near the shade 12c (for example, near the center in the left-right direction of the shade 12c). This lens 12A4 is similar to the light exit surface 12d of the first embodiment, and the light from the light source 14 incident on the inside of the first lens portion 12A1, ie, the first
Of the light from the light source 14 that has entered the lens unit 12A1, the direct light that travels toward the first exit surface 12A1a and the reflected light that travels toward the first exit surface 12A1a after being internally reflected by the reflection surface 12b. , A luminous intensity distribution (near the focal point F _{12A4 of the} lens 12A4)
A light source image) is reversely projected to form a low beam light distribution pattern P1a including cut-off lines CL1 to CL3 on the upper edge shown in FIG.

The basic surface shape of the second emission surface 12A2b is as described above, but the first emission surface 12A.
Since the draft angles α and β are set in 1a and the second incident surface 12A2a, the following adjustments are actually made.

FIG. 24 is a diagram for explaining normal lines of the first exit surface 12A1a, the second entrance surface 12A2a, and the second exit surface 12A2b.

That is, when the extraction angles α and β are set in the first exit surface 12A1a and the second entrance surface 12A2a, as shown in FIG. 24, the method passes through the centers of the first exit surface 12A1a and the second entrance surface 12A2a. The lines N _12A1a and N _12A2a are inclined with respect to the horizontal. In this case, the second exit surface 1
If the normal line N _12A2b passing through the center of _2A2b extends in the horizontal direction, the light from the light source 14 emitted from the second emission surface 12A2b becomes light that travels obliquely upward with respect to the horizontal, causing glare. There is a fear.

In order to suppress this, the surface shape of the second emission surface 12A2b is adjusted so that light from the light source 14 emitted from the second emission surface 12A2b becomes light parallel to the first reference axis AX1. ing. For example, the normal line N _{12 of} the second emission surface 12A2b is such that the light from the light source 14 emitted from the second emission surface 12A2b becomes light parallel to the first reference axis AX1.
_A2b is adjusted to have a surface shape that is inclined forward and obliquely upward. This adjustment is finally adjusted to adjust the focus F _{12A4 of the} lens 12A4 including the first exit surface 12A1a and the second lens portion 12A2 (the second entrance surface 12A2a and the second exit surface 12A2b) near the position of the shade 12c. It is. A line with an arrow at the tip in FIG. 24 represents an optical path of light from the light source 14 (more precisely, the reference point F) incident on the lens body 12A.

The surface connecting the leading edge of the reflecting surface 12b and the lower edge of the first emitting surface 12A1a is the reflecting surface 12.
Although it is set as the inclined surface extended toward the front diagonally downward from the front-end edge of b, it is not restricted to this, 2nd
Any surface may be used as long as it does not block light from the light source 14 traveling toward the emission surface 12A2b. Similarly, the upper surface of the lens body 12A, that is, the surface connecting the upper end edge of the first entrance surface 12a and the upper end edge of the second exit surface 12A2b is a surface extending in a substantially horizontal direction. Not limited to any surface as long as it does not block the light from the light source 14 traveling toward the second emission surface 12A2b. Similarly, both side surfaces of the lens body 12A, that is,
The surface connecting the left and right edges of the first entrance surface 12a and the left and right edges of the second exit surface 12A2b is the first
The inclined surface narrows in a tapered shape toward the incident surface 12a (see FIG. 21A), but is not limited thereto, and the surface does not block the light from the light source 14 traveling toward the second emission surface 12A2b. Any surface may be used.

In the vehicular lamp 10A (lens body 12A) having the above-described configuration, the light from the light source 14 is transmitted from the first incident surface 12a of the first lens unit 12A1 to the first lens unit 1 as shown in FIG.
The light enters the inside of 2A1 and is partially shielded by the shade 12c of the first lens unit 12A1, and then exits from the first exit surface 12A1a of the first lens unit 12A1. In that case, the 1st output surface 12
The light from the light source 14 emitted from A1a is condensed in the horizontal direction by the action of the first emission surface 12A1a (see FIG. 22; it is not collected or hardly collected in the vertical direction). Then, the light from the light source 14 emitted from the first emission surface 12A1a passes through the space S, and further enters the second lens unit 12A2 from the second incident surface 12A2a of the second lens unit 12A2. The light exits from the second exit surface 12A2b of the lens portion 12A2 and is irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is reflected by the second emission surface 12A2.
Due to the action of b, light is condensed in the vertical direction (see FIG. 17B). Thus, FIG. 20 (a) is displayed on the virtual vertical screen.
) Etc., the cut-off lines CL1 to CL3 defined by the shade 12c at the upper end edge shown in FIG.
And the like (corresponding to the predetermined light distribution pattern of the present invention).

The low beam light distribution pattern P1a and the like have a relatively high central luminous intensity and are excellent in distance visibility. This is because the light source 14 is disposed in the vicinity of the incident surface 12a (in the vicinity of the reference point F) of the lens body 12A in an attitude in which the optical axis AX ₁₄ of the light source 14 coincides with the second reference axis AX2. intensity (luminosity) is high light on axis AX ₁₄ of the light (direct light) is condensed on the second reference axis AX2 closer toward the shade 12c (e.g., condensed at the center of the shade 12c)
It is because.

The degree of diffusion in the horizontal direction and / or the vertical direction of the low beam light distribution pattern is adjusted by adjusting the surface shape (for example, curvature) of the first emission surface 12A1a and / or the second emission surface 12A2b. ) To FIG. 20 (c), and can be freely adjusted. For example, the degree of horizontal diffusion of the low beam light distribution pattern can be freely adjusted by adjusting the surface shape (for example, curvature) of the first emission surface 12A1a. Similarly, the degree of vertical diffusion of the low beam light distribution pattern can be freely adjusted by adjusting the surface shape (for example, curvature) of the second emission surface 12A2b.

FIG. 19A is a front view showing a state in which a plurality of vehicle lamps 10A (a plurality of lens bodies 12A) of the second embodiment are arranged in a line in the horizontal direction, and FIG. 19B is a top view.

As shown in FIGS. 19A and 19B, the lens combination 16 includes a plurality of lens bodies 12A. The lens coupling body 16 (the plurality of lens bodies 12A) is integrally molded (injection molding) by injecting a transparent resin such as polycarbonate or acrylic into a mold, and cooling and solidifying. The second exit surfaces 12A2b of each of the plurality of lens bodies 12A are arranged in a row in the horizontal direction in a state of being adjacent to each other, and form a semi-cylindrical exit surface group having a sense of unity extending in a line shape in the horizontal direction. doing.

By using the lens combined body 16 having the above-described configuration, it is possible to configure a vehicular lamp that looks good with a sense of unity extending in a line shape in the horizontal direction. The lens combination 16 may be formed by molding a plurality of lens bodies 12 in a physically separated state and connecting (holding) them with a holding member (not shown) such as a lens holder.

As described above, according to the present embodiment, in addition to the effects of the first embodiment,
The following effects can be achieved.

That is, first, the lens body 12A having a sense of unity extending in a line shape in the horizontal direction.
(Lens combined body 16) and vehicle lamp 10A using the same can be provided. Second
In addition, although the final emission surface, the second emission surface 12A2b is a semi-cylindrical surface (a semi-cylindrical refracting surface extending in the horizontal direction), the low beam condensed in the horizontal and vertical directions. It is possible to provide a lens body 12A (lens coupling body 16) capable of forming a light distribution pattern P1a and the like and a vehicle lamp 10A using the same.

The appearance with a sense of unity extending in a line shape in the horizontal direction is that the second emission surface 12A2b which is the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface extending in the horizontal direction). )
It is because it is comprised as.

Even though the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refracting surface extending in the horizontal direction), the arrangement for low beam condensed in the horizontal direction and the vertical direction is used. The light pattern P1a and the like can be formed mainly by focusing the light in the horizontal direction on the first lens unit 12.
The first exit surface 12A1a (a semi-cylindrical refracting surface extending in the vertical direction) of A1 is in charge of the second lens portion 12A2, which is the final exit surface of the lens body 12A, mainly focusing in the vertical direction. This is because the two exit surfaces 12A2b (a semi-cylindrical refracting surface extending in the horizontal direction) are in charge. That is, it is due to the decomposition of the light collecting function.

Further, according to the present embodiment, although the extraction angles α and β are set in the first emission surface 12A1a and the second incidence surface 12A2a, the emission is made from the second emission surface 12A2b that is the final emission surface. Provided is a lens body 12A (lens coupling body 16) suitable for a vehicular lamp, and a vehicular lamp 10A using the same, in which light from the light source 14 is parallel to the first reference axis AX1. Can do.

  Next, a modified example will be described.

FIG. 25 is a diagram illustrating a lens body 12B that is a first modification of the lens body 12A of the second embodiment.

As shown in FIG. 25, the lens body 12B of this modification is molded in a state where the first lens portion 12A1 and the second lens portion 12A2 are physically separated, and the both are connected by a holding member 18 such as a lens holder. (Holding). The first exit surface 12A1a and the second entrance surface 12A2a are not set with the draft angles α and β, and are plane surfaces (or curved surface shapes) orthogonal to the reference axis AX1, respectively.

According to this modification, adjustment of the second exit surface 12A2b can be omitted as a result of eliminating the draft angles α and β.

FIG. 26 is a perspective view for explaining a lens body 12C (first exit surface 12A1a, second entrance surface 12A2a, and second exit surface 12A2b) that is a second modification of the lens body 12A of the second embodiment. is there.

The lens body 12C of this modification corresponds to a lens body obtained by replacing the first emission surface 12A1a and the second emission surface 12A2b) of the second embodiment.

That is, the first exit surface 12A1a of the lens body 12C of the present modification is the first exit surface 12
This is a surface for condensing light from the light source 14 emitted from A1a in the vertical direction (corresponding to the first direction of the present invention). Specifically, as shown in FIG. 26, the cylinder axis is configured as a semi-cylindrical surface extending in the horizontal direction. In this case, the focal line of the first emission surface 12A1a is shade 1
It extends in the horizontal direction in the vicinity of 2c. Further, the second emission surface 12A2b of the lens body 12C of the present modification is a surface that condenses light from the light source 14 emitted from the second emission surface 12A2b in the horizontal direction (corresponding to the second direction of the present invention). is there. Specifically, as shown in FIG.
The cylinder axis is configured as a semi-cylindrical surface extending in the vertical direction. In this case, the focal line of the second exit surface 12A2b extends in the vertical direction in the vicinity of the shade 12c.

The focal point F _{12A4 of the} lens 12A4 composed of the first exit surface 12A1a and the second lens portion 12A2 (the second entrance surface 12A2a and the second exit surface 12A2b) of the lens body 12C of this modification is the same as in the second embodiment. It is set near the shade 12c (for example, near the center in the left-right direction of the shade 12c).

FIG. 27 is a front view showing a state in which a plurality of vehicle lamps 10C (a plurality of lens bodies 12C) are arranged in a line in the vertical direction.

As shown in FIG. 27, the lens combination 16C includes a plurality of lens bodies 12C. The lens coupling body 16C (the plurality of lens bodies 12C) is integrally molded (injection molding) by injecting a transparent resin such as polycarbonate or acrylic into a mold, and cooling and solidifying.
The second exit surfaces 12A2b of each of the plurality of lens bodies 12C are arranged in a row in the vertical direction in a state of being adjacent to each other, and form a semi-cylindrical exit surface group having a sense of unity extending in a line shape in the vertical direction. doing.

By using the lens combined body 16C having the above-described configuration, it is possible to configure the vehicular lamp 10C having a sense of unity extending in a line shape in the vertical direction. The lens combination 16C is
The plurality of lens bodies 12C may be molded in a physically separated state and connected (held) by a holding member (not shown) such as a lens holder.

According to this modified example, first, it is possible to provide a lens body 12C (lens coupling body 16C) having a sense of unity extending in a line in the vertical direction and a vehicular lamp 10C using the lens body 12C. Second, although the final emission surface, the second emission surface 12A2b, is a semi-cylindrical surface (a semi-cylindrical refracting surface extending in the vertical direction), the light is condensed in the horizontal direction and the vertical direction. The lens body 12C (lens combined body 1) that can form the low beam light distribution pattern P1a and the like.
6C) and a vehicle lamp 10C using the same can be provided.

The appearance with a sense of unity extending in a line shape in the vertical direction is that the second emission surface 12A2b which is the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface extending in the vertical direction). )
It is because it is comprised as.

Even though the second exit surface 12A2b, which is the final exit surface, is a semi-cylindrical surface (a semi-cylindrical refracting surface extending in the vertical direction), the arrangement for low beams condensed in the horizontal direction and the vertical direction is used. The light pattern P1a and the like can be formed mainly by focusing the light in the vertical direction.
The first exit surface 12A1a of A1 (a semi-cylindrical refracting surface extending in the horizontal direction) takes charge of the second lens portion 12A2, which is the final exit surface of the lens body 12A, mainly focusing in the horizontal direction. This is because the two exit surfaces 12A2b (a semi-cylindrical refracting surface extending in the vertical direction) are in charge. That is, it is due to the decomposition of the light collecting function.

The concept of “decomposing the light collecting function” described in the second embodiment is not limited to the vehicular lamp 10 of the first embodiment, and the final emission surface is a hemispherical surface (a hemispherical refractive surface). )
The present invention can be applied to any vehicular lamp (for example, a vehicular lamp described in JP-A-2005-228502 described in the background art). Hereinafter, this point will be described using the third embodiment and the fourth embodiment.

Next, as a third embodiment, a direct projection type vehicular lamp 20 to which the concept of “decomposing the light collecting function” described in the second embodiment is applied will be described.
Hereinafter, the same components as those of the vehicle lamp 10A of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

FIG. 28 is a schematic view of a direct projection type vehicular lamp 20 to which the concept of “disassembling the light collecting function” is applied.

As shown in FIG. 28, the direct projection type vehicular lamp 20 of the present embodiment includes a light source 14, a shade 22, a first lens unit 12 </ b> A <b> 1, and a second lens unit 12 </ b> A <b> 2, and light from the light source 14 is shaded 22. After being partially shielded by the first lens portion 12A1, the first lens portion 12A1 enters the first lens portion 12A1 from the first incident surface 12A1b, exits from the first exit surface 12A1a of the first lens portion 12A1, and further the second lens. Part 12A2 second incident surface 12A2a
Enters the second lens portion 12A2 and enters the second lens portion 12A2 and the second exit surface 12A2b of the second lens portion 12A2.
The light beam distribution pattern P1a for the low beam including the cut-off lines CL1 to CL3 defined by the shade 22 at the upper end edge shown in FIG. The vehicle headlamp includes a lens body configured to form a predetermined light distribution pattern according to the present invention.

That is, the direct projection type vehicular lamp 20 of the present embodiment uses a convex lens (a convex lens whose final emission surface is a hemispherical surface) used in a general direct projection type vehicular lamp as a first lens. This corresponds to the part replaced with the part 12A1 and the second lens part 12A2. The focal point F _{12A5 of the} lens 12A5 including the first lens portion 12A1 and the second lens portion 12A2 is in the vicinity of the upper edge of the shade 22 disposed in front of the light source 14 so as to cover a part of the light source 14 (light emitting surface). Is set to The first incident surface 12A
Unlike the second embodiment, 1b is a plane surface (or curved surface shape) orthogonal to the reference axis AX1.

In the vehicular lamp 20 having the above-described configuration, the light from the light source 14 is partially shielded by the shade 22 and then the first lens unit 12A from the first incident surface 12A1b of the first lens unit 12A1.
1 enters and exits from the first exit surface 12A1a of the first lens portion 12A1. that time,
The light from the light source 14 emitted from the first emission surface 12A1a is condensed in the horizontal direction by the action of the first emission surface 12A1a (not collected or hardly collected in the vertical direction). Then, the light from the light source 14 emitted from the first emission surface 12A1a passes through the space S, and further enters the second lens unit 12A2 from the second incident surface 12A2a of the second lens unit 12A2. The light exits from the second exit surface 12A2b of the lens portion 12A2 and is irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is transmitted to the second emission surface 12A.
By the action of 2b, the light is collected in the vertical direction (the light is not collected or hardly collected in the horizontal direction). As described above, on the virtual vertical screen, the low beam light distribution pattern P1a including the cut-off lines CL1 to CL3 defined by the shade 22 at the upper edge shown in FIG. 20A and the like (corresponding to the predetermined light distribution pattern of the present invention) ) Is formed.

In addition, the shade 22 is abbreviate | omitted from the structure shown in FIG. 28, and each surface 12A1a, 12A1b, 1
By adjusting 2A2a and 12A2b, a vehicular lamp that forms the high beam light distribution pattern P _Hi shown in FIG. 29 on the virtual vertical screen can be configured. In this case, the light from the light source 14 is transmitted from the first incident surface 12A1b of the first lens unit 12A1 to the first lens unit 12A.
1 enters and exits from the first exit surface 12A1a of the first lens portion 12A1. that time,
The light from the light source 14 emitted from the first emission surface 12A1a is condensed in the horizontal direction by the action of the first emission surface 12A1a (not collected or hardly collected in the vertical direction). Then, the light from the light source 14 emitted from the first emission surface 12A1a passes through the space S, and further enters the second lens unit 12A2 from the second incident surface 12A2a of the second lens unit 12A2. The light exits from the second exit surface 12A2b of the lens portion 12A2 and is irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is reflected on the second emission surface 12A.
By the action of 2b, the light is collected in the vertical direction (the light is not collected or hardly collected in the horizontal direction). Thus, the high beam light distribution pattern P _Hi illustrated in FIG. 29 is formed on the virtual vertical screen. FIG. 29 shows a virtual vertical screen (
This is an example of a high beam light distribution pattern P _Hi formed on the front side of the vehicle (approximately 25 m ahead).

Next, as a fourth embodiment, a projector-type vehicular lamp 30 to which the concept of “disassembling the light collecting function” described in the second embodiment will be described. Hereinafter, the second
The same components as those of the vehicle lamp 10A of the embodiment are denoted by the same reference numerals, and the description thereof is omitted.

FIG. 30 is a schematic diagram of a projector-type vehicular lamp 30 to which the above-described concept of “decomposing the light collecting function” is applied.

As shown in FIG. 30, the projector-type vehicular lamp 30 according to the present embodiment includes a light source 14, a reflector 32 (elliptic reflecting surface), a shade 34, a first lens unit 12A1, and a second lens unit 12A2. After the light from 14 is reflected by the reflector 32 and partially shielded by the shade 34, the first lens unit 1 passes through the first incident surface 12A1b of the first lens unit 12A1.
2A1 enters the first lens portion 12A1, exits from the first exit surface 12A1a, and further enters the second lens portion 12A2 from the second entrance surface 12A2a of the second lens portion 12A2, and enters the second lens portion 12A2. Is emitted from the second emission surface 12A2b and irradiated forward, so that the low beam light distribution pattern P1a including the cut-off lines CL1 to CL3 defined by the shade 34 at the upper edge on the virtual vertical screen (the present invention) This is a vehicular headlamp including a lens body configured to form a predetermined light distribution pattern.

That is, the projector-type vehicular lamp 30 of the present embodiment includes a convex lens (a convex lens whose final emission surface is a hemispherical surface) used in a general projector-type vehicular lamp, and the first lens portion 12A1. This corresponds to the replacement with the second lens portion 12A2. The shade 34 is a lens 12A5 including a first lens unit 12A1 and a second lens unit 12A2.
The mirror surface extends substantially horizontally from the vicinity of the focal point F _12A5 toward the rear. The focal point F _{12A5 of the} lens 12A5 composed of the first lens unit 12A1 and the second lens unit _12A2 is:
It is set near the tip edge of the shade 34. The first focal point F1 of the reflector 32 (elliptic reflecting surface) is set near the light source 14, and the second focal point F2 is the focal point F _{12A5 of the} lens 12A5 including the first lens unit 12A1 and the second lens unit 12A2. It is almost coincident. In addition,
Unlike the second embodiment, the first incident surface 12A1b has a plane shape (or curved surface shape) orthogonal to the reference axis AX1.

In the vehicular lamp 30 configured as described above, the light from the light source 14 is reflected by the reflector 32 and partially blocked by the shade 34, and then the first incident surface 12A of the first lens portion 12A1.
The first light exit surface 12A of the first lens unit 12A1 enters the first lens unit 12A1 from 1b.
It exits from 1a. At that time, the light from the light source 14 emitted from the first emission surface 12A1a is condensed in the horizontal direction by the action of the first emission surface 12A1a (not condensed or hardly collected in the vertical direction). Then, the light source 14 emitted from the first emission surface 12A1a.
The light from the light passes through the space S, and further, the second incident surface 12A2a of the second lens portion 12A2.
Enters the second lens portion 12A2 and enters the second lens portion 12A2 and the second exit surface 12A2b of the second lens portion 12A2.
It is emitted from and irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is condensed in the vertical direction (not condensed or hardly collected in the horizontal direction) by the action of the second emission surface 12A2b. With the above, on the virtual vertical screen,
Cut-off line CL1 defined by the shade 34 at the upper edge shown in FIG.
-Light distribution pattern P1a for low beam including CL3, etc. (corresponding to the predetermined light distribution pattern of the present invention)
Is formed.

In addition, the shade 34 is abbreviate | omitted from the structure shown in FIG. 30, and the reflector 32 (elliptic-type reflective surface)
By adjusting the above, it is possible to configure the vehicle headlamp that forms the high beam light distribution pattern P _Hi shown in FIG. 29 on the virtual vertical screen. In this case, the light from the light source 14 is
The light is reflected by the reflector 32, enters the first lens unit 12A1 from the first incident surface 12A1b of the first lens unit 12A1, and exits from the first output surface 12A1a of the first lens unit 12A1. At that time, the light from the light source 14 emitted from the first emission surface 12A1a is the first emission surface 12A1.
Due to the action of a, the light is condensed in the horizontal direction (not condensed or hardly condensed in the vertical direction). Then, the light from the light source 14 emitted from the first emission surface 12A1a passes through the space S, and further enters the second lens unit 12A2 from the second incident surface 12A2a of the second lens unit 12A2. The light exits from the second exit surface 12A2b of the lens portion 12A2 and is irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is condensed in the vertical direction by the action of the second emission surface 12A2b (not collected or hardly collected in the horizontal direction). Thus, the high beam light distribution pattern P _Hi illustrated in FIG. 29 is formed on the virtual vertical screen.

Next, as a fifth embodiment, a vehicle lamp 10D provided with a camber angle will be described with reference to the drawings.

FIG. 31 (a) is a side view of the vehicular lamp 10D with a camber angle (only the main optical surface), FIG. 31 (b) is a top view (only the main optical surface), and FIG. 31 (c) is a vehicular lamp. It is an example of the light distribution pattern for low beams formed by 10D. 31 (d) to 31 (f) are comparative examples, and FIG. 31 (d) is a side view of the vehicular lamp 10A according to the second embodiment in which a camber angle is not given (only the main optical surface), FIG. (E) is a top view (only the main optical surface), and FIG. 31 (f) is an example of a low beam light distribution pattern formed by the vehicle lamp 10A of the second embodiment. FIG. 32 is a top view (only the main optical surface) for explaining a problem when the camber angle is given.

As shown in FIG. 31 (b), the vehicular lamp 10D of the present embodiment is configured so that the second lens portion 12A2 of the vehicular lamp 10A of the second embodiment is in a top view with respect to the first reference axis AX1. The inclined surface, that is, the second emission surface 12A2b of the vehicle lamp 10A of the second embodiment is a semi-cylindrical surface extending in a direction inclined by a predetermined angle with respect to the first reference axis AX1 when viewed from above. This corresponds to a configuration (that is, a camber angle θ1 (for example, θ1 = 30 °)).

As a result of a simulation confirmed by the present inventors, when only the camber angle θ1 is given, as shown in FIG. 32, the distance between the first exit surface 12A1a and the second entrance surface 12A2a is set to the first reference axis AX1. On both sides (see arrows B and C in FIG. 32), the focal position F _{B of the} light emitted from the B position of the first emission surface 12A1a and the focal position F _{C of the} light emitted from the C position are greatly shifted. As a result, as shown in FIG. 33, the side where the distance between the first exit surface 12A1a and the second entrance surface 12A2a is widened in the low beam distribution pattern formed on the virtual vertical screen (the right side in FIG. 33). ) Was found to be out of focus without condensing.

  The cause of this blurring will be described as follows with reference to the drawings.

FIG. 34A is a cross-sectional view (only the main optical surface) at the position B shown in FIG.
) Tip arrows with lines in represents the optical path followed by the light RAY1 _B at an incident angle with respect to the first exit surface 12A1a (B position). FIG. 34B is a cross-sectional view at the position C shown in FIG. 32 (only the main optical surface). A line with an arrow at the tip in FIG. 34B is relative to the first emission surface 12A1a (position C). The light R incident at the same incident angle as shown in FIG.
It represents the optical path followed by ay1 _C. For convenience of explanation, FIG. 34 (a) and FIG. 34 (b
), The first exit surface 12A1a and the second entrance surface 12A2 with no draft angle set.
Although a is drawn, the same applies when a draft angle is set.

As shown in FIG. 34 (b), at the position C, the distance between the first exit surface 12A1a and the second entrance surface 12A2a is wider than at the position B (see FIG. 34 (a)). Therefore, the incident position on the second incident face 12A2a light RAY1 _C becomes lower than the incident position on the second incident face 12A2a light RAY1 _B shown in FIG. 34 (a), the light Ray incident from the incident position of the lower
1 _C is directed upward with respect to the horizontal as shown in FIG. As a result, the blur occurs.

As a result of diligent studies to improve the blur, the present inventors have improved the blur by adjusting the surface shape of the first emission surface 12A1a, and the light distribution pattern for low beam is totally condensed. (See FIG. 31 (c)).

Based on this knowledge, the first emission surface 12A1a of the present embodiment is a semi-cylindrical surface extending in the vertical direction, and the low beam light distribution pattern is entirely condensed (see FIG. 31C). The surface shape is adjusted as follows. In this adjustment, the shifted focal positions F _B , F _{C and the} like are shaded 12.
The adjustment is performed to match the vicinity of the position c, and is performed using predetermined simulation software. 35A is a perspective view of the vehicular lamp 10D of the fifth embodiment (only the main optical surface), and FIG. 35B is a comparative example, and is a perspective view of the vehicular lamp 10A of the second embodiment (main optical). Surface only). Referring to FIG. 35 (a), the first emission surface 12 of the present embodiment adjusted as described above.
It can be seen that A1a has an asymmetric shape with respect to the reference axis AX1.

The vehicle lamp 10D of the present embodiment is the vehicle lamp 10 of the second embodiment except for the above points.
The configuration is the same as A.

According to this embodiment, in addition to the effects of the second embodiment, the following effects can be further achieved.

That is, first, a new-looking lens body (lens combined body) provided with a camber angle
And the vehicle lamp using the same can be provided. That is, it is possible to provide an excellent-looking lens body (lens combined body) that extends in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis AX1 in a top view, and a vehicle lamp using the lens body. it can. Second, the light distribution for low beam condensed in the horizontal direction and the vertical direction even though the second emission surface 12A2b which is the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface). A lens body (lens combined body) capable of forming a pattern and a vehicular lamp using the lens body can be provided.
Thirdly, it is possible to provide a lens body (lens combined body) in which the low-beam light distribution pattern is entirely collected despite the camber angle being provided, and a vehicular lamp using the lens body.

The second output surface 12A2b, which is the final output surface, has a semi-cylindrical surface (line shape) extending in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis AX1. This is because the second exit surface 12A2b extends in a direction inclined with respect to the first reference axis AX1 when viewed from above.

Even though the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface), a light distribution pattern for low beam condensed in the horizontal direction and the vertical direction is formed. The first light exit surface 12A1 of the first lens portion 12A1 can mainly condense in the horizontal direction.
a (semi-cylindrical refracting surface) takes charge of the second emitting surface 12A2b (semi-cylindrical refracting surface) of the second lens portion 12A2, which is the final emitting surface of the lens body 12A, mainly focusing in the vertical direction. ) Is in charge. That is, it is due to the decomposition of the light collecting function.

Although the camber angle is given, the light distribution pattern for the low beam is totally collected by the first emission surface 12A1a having a semi-cylindrical surface extending in the vertical direction. This is because the surface shape is adjusted so that the light distribution pattern is totally condensed.

Note that the idea of “giving a camber angle” described in the present embodiment and the idea of improving the above-described blur caused by the provision of the camber angle as described above are as follows.
The present invention is not limited to the vehicular lamp 10A (lens body 12A) of the second embodiment, but can be applied to the respective modifications, the vehicular lamp (lens body) of the third and fourth embodiments, and the like. Similarly, the tenth described later.
The present invention can also be applied to the vehicular lamp 10J (lens body 12J) of the embodiment.

Next, as a sixth embodiment, a vehicle lamp 10E provided with a slant angle will be described with reference to the drawings.

  FIG. 36 is a front view of the vehicular lamp 10E with a slant angle.

As shown in FIG. 36, the vehicular lamp 10E of the present embodiment is obtained by tilting the second lens portion 12A2 of the vehicular lamp 10A of the second embodiment with respect to the horizontal in a front view, that is, the above-described The second emission surface 12A2b of the vehicular lamp 10A of the second embodiment is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the horizontal (ie, a slant angle θ2 ( For example, it is equivalent to that given θ2 = 12 °). Specifically, the second lens portion 12A2 (second emission surface 12A2b) of the present embodiment is centered on the first reference axis AX1 with the second lens portion 12A2 (second emission surface 12A2b) of the second embodiment. Corresponds to a rotation of a predetermined angle θ2.

As a result of a simulation confirmed by the present inventors, only by providing the slant angle θ2, the focal line of the second lens portion 12A2 is inclined with respect to the shade 12c. As a result, FIG.
As shown in FIG. 7B, it was found that the light distribution pattern for low beam formed on the virtual vertical screen is in a rotated state (or a blurred state). FIG. 37A is a diagram for explaining problems that appear in the low beam light distribution pattern when a slant angle is given, and FIG. 37B is a diagram schematically showing FIG. 37A.

As a result of intensive studies to suppress this rotation (or a blurred state), the present inventors have determined that the first emission surface 12A1a has a predetermined angle θ2 with respect to the vertical in front view as shown in FIG. It is configured as a semi-cylindrical surface extending in an inclined direction, and the reflection surface 12b and the shade 12c are at a predetermined angle in a direction opposite to the second emission surface 12A2b and the first emission surface 12A1a with respect to the horizontal in a front view. The rotation is suppressed by arranging in a posture inclined by θ2 (FIGS. 38A and 38).
(B)). FIG. 38A is a diagram for explaining that the problem (rotation) appearing in the low beam light distribution pattern is suppressed, and FIG. 38B is a diagram schematically showing FIG. 38A. .

The reason why the rotation (or blurred state) is suppressed will be described as follows with reference to the drawings.

52A is a side view of the vehicular lamp 10E (lens body 12A) of the present embodiment (only the main optical surface from which the first emission surface 12A1a is omitted), and FIG. 52B is a top view (first emission surface). 12A1
only the main optical surface from which a is omitted), and in both cases, the lens body 12A from the second exit surface 12A2b.
The optical path (namely, the result of reverse ray tracing) followed by the parallel ray RayAA incident on the inside is shown.

FIG. 52 (d) is a side view of the vehicular lamp 10E (lens body 12A) of the present embodiment (only the main optical surface from which the first emission surface 12A1a is omitted), and FIG. 52 (e) is a top view (first emission surface). 12A1
only the main optical surface from which a is omitted), and in both cases, the lens body 12A from the second exit surface 12A2b.
The optical path (namely, the result of reverse ray tracing) followed by the parallel ray RayBB incident on the inside is shown.

52A to 52D, the slant angle θ2 (=
10 °), and the focal line of the second lens portion 12A2 is slant angle θ2 with respect to the horizontal.
Inclined for minutes. As a result, the focal point F _BB in FIG. _52C is the focal point F _AA in FIG.
Located higher.

Next, considering the optical path followed by the parallel rays RayAA and RayBB when the first emission surface 12A1a is disposed, this optical path is as shown in FIGS. 53 (a) and 53 (b).

FIG. 53A is a top view in which the first emission surface 12A1a is added to FIG. 52B, and the optical path followed by the parallel ray RayAA incident on the lens body 12A from the second emission surface 12A2b (that is, the result of the reverse ray tracing). ). FIG. 53B shows the first output surface 12A1 in FIG.
In the top view to which a is added, the optical path (namely, the result of reverse ray tracing) followed by the parallel ray RayBB incident on the inside of the lens body 12A from the second emission surface 12A2b is shown.

When the slant angle θ2 (= 10 °) is given to the first emission surface 12A1a (that is, the first emission surface 12A1a is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical. The component having a low focal point F _AA (that is, RayAA) is refracted by the action of the first emission surface 12A1a and travels to the opposite side to form a focal point, as shown in FIG. 53 (a). On the other hand, the component having a high focal point F _BB (that is, RayBB) is refracted by the action of the first emission surface 12A1a and travels to the opposite side, as shown in FIG. As a result, the focal line is inclined in the direction opposite to the slant direction.

Therefore, in order to make the shade 12c coincide (substantially coincide) with the focal line inclined in the direction opposite to the slant direction, the reflection surface 12b and the shade 12c are seen from the second emission surface 12A with respect to the horizontal in front view.
2b and the first emission surface 12A1a are arranged in a posture inclined at a predetermined angle θ2 in the opposite direction. As a result, the shade 12c coincides (substantially coincides) with the focal line inclined opposite to the slant direction, and the rotation (or blurred state) is suppressed.

Based on the above knowledge, the first emission surface 12A1a of the present embodiment is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical in a front view. Specifically, the first emission surface 12A1a of the present embodiment rotates the first emission surface 12A1a of the second embodiment by a predetermined angle θ2 around the first reference axis AX1 in the same direction as the second emission surface 12A2b. It corresponds to that.

Further, the reflection surface 12b and the shade 12c are, when viewed from the front, the second emission surface 12A with respect to the horizontal.
2b and the first exit surface 12A1a are arranged in a posture inclined at a predetermined angle θ2 in the opposite direction.
Specifically, the reflecting surface 12b and the shade 12c of the present embodiment are the reflecting surface 1 of the second embodiment.
2b and the shade 12c correspond to those rotated by a predetermined angle θ2 in the opposite direction to the second emission surface 12A2b and the first emission surface 12A1a with the first reference axis AX1 as the center.

The vehicular lamp 10E of the present embodiment is the vehicular lamp 10 of the second embodiment except for the above points.
The configuration is the same as A.

According to this embodiment, in addition to the effects of the second embodiment, the following effects can be further achieved.

That is, firstly, it is possible to provide a new-looking lens body (lens combined body) having a slant angle and a vehicle lamp using the lens body. That is, it is possible to provide an attractive lens body (lens combined body) having a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the horizontal in a front view, and a vehicular lamp using the lens body. Second, the light distribution for low beam condensed in the horizontal direction and the vertical direction even though the second emission surface 12A2b which is the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface). A lens body (lens combined body) capable of forming a pattern and a vehicular lamp using the lens body can be provided. 3rdly, although the slant angle | corner is provided, the lens body (lens coupling body) by which rotation of the light distribution pattern for low beams is suppressed, and a vehicle lamp using the same can be provided.

The appearance with a sense of unity extending in a line shape in a direction tilted by a predetermined angle with respect to the horizontal is that the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical shape). This is because the second emission surface 12A2b extends in a direction inclined with respect to the horizontal in a front view.

Even though the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface), a light distribution pattern for low beam condensed in the horizontal direction and the vertical direction is formed. The first light exit surface 12A1 of the first lens portion 12A1 can mainly condense in the horizontal direction.
a (semi-cylindrical refracting surface) takes charge of the second emitting surface 12A2b (semi-cylindrical refracting surface) of the second lens portion 12A2, which is the final emitting surface of the lens body 12A, mainly focusing in the vertical direction. ) Is in charge. That is, it is due to the decomposition of the light collecting function.

Although the slant angle is given, the rotation of the light distribution pattern for the low beam is suppressed because the first emission surface 12A1a extends in a direction inclined by a predetermined angle with respect to the vertical in front view. It is a cylindrical surface and the shade 12c (and the reflection surface 12b) is a front view.
This is because they are arranged in a posture inclined at a predetermined angle in the opposite direction to the second emission surface 12A2b and the first emission surface 12A1a with respect to the horizontal.

Note that the concept of “giving a slant angle” described in the present embodiment and the idea of suppressing the rotation generated with the grant of the slant angle as described above are the second.
The present invention is not limited to the vehicular lamp 10A (lens body 12A) of the embodiment, and can also be applied to the respective modifications, the vehicular lamp (lens body) of the third and fourth embodiments, and the like. Similarly, the present invention can be applied to a vehicular lamp 10J (lens body 12J) of a tenth embodiment described later.

Next, as a seventh embodiment, a vehicular lamp 10 provided with a camber angle and a slant angle.
F will be described with reference to the drawings.

FIG. 39 (a) is a side view of a vehicular lamp 10F with a camber angle and a slant angle (
39 (b) is a top view (only the main optical surface), and FIG. 39 (c) is an example of a low beam light distribution pattern formed by the vehicular lamp 10F.

As shown in FIGS. 39 (a) and 39 (b), the vehicular lamp 10F according to the present embodiment is a first view of the second lens portion 12A2 of the vehicular lamp 10A according to the second embodiment as viewed from above. Reference axis AX
1 (that is, the camber angle θ1 is given) and that is inclined with respect to the horizontal (that is, the slant angle θ2 is given) in a front view, that is, the fifth embodiment and the first. This corresponds to a combination of the sixth embodiment.

That is, the second emission surface 12A2b of the present embodiment extends in a direction inclined by a predetermined angle with respect to the first reference axis AX1 when viewed from above, as in the fifth embodiment, and is similar to the sixth embodiment. In the front view, it is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the horizontal.

And 1st output surface 12A1a of this embodiment is predetermined angle (theta) 2 with respect to perpendicular | vertical by front view.
The surface is a semi-cylindrical surface extending in an inclined direction (see FIG. 36), and the surface shape is adjusted so that the low beam light distribution pattern is totally condensed.

Furthermore, the reflective surface 12b and the shade 12c of the present embodiment are the same as in the sixth embodiment.
When viewed from the front, they are arranged in a posture inclined at a predetermined angle θ2 in the opposite direction to the second emission surface 12A2b and the first emission surface 12A1a with respect to the horizontal.

According to the present embodiment, it is possible to provide a new-looking lens body (lens combined body) provided with a camber angle and a slant angle, and a vehicular lamp using the lens body. In addition, the fifth and sixth embodiments described above can be provided. The same effect as the embodiment can be obtained.

It should be noted that the idea of “giving camber angle and slant angle” explained in the present embodiment, and the above-described blurring and rotation generated due to the provision of the camber angle and slant angle are improved and suppressed as described above. The idea is not limited to the vehicular lamp 10A (lens body 12A) of the second embodiment, but each of its modifications, the vehicular lamp (lens body) of the third and fourth embodiments.
It can also be applied. Similarly, the present invention can be applied to a vehicular lamp 10J (lens body 12J) of a tenth embodiment described later.

  Next, the vehicular lamp 10G of the first comparative example will be described with reference to the drawings.

FIG. 40A is a side view of the vehicular lamp 10G of the first comparative example (only the main optical surface), and FIG.
b) is a top view (only the main optical surface), and FIG. 40C is an example of a light distribution pattern formed by the vehicular lamp 10G.

As shown in FIGS. 40 (a) and 40 (b), the vehicular lamp 10G of this comparative example has the fifth
This corresponds to the second lens portion 12A2 of the vehicular lamp 10D according to the embodiment tilted with respect to the horizontal (that is, provided with the slant angle θ2) in a front view.

That is, the first emission surface 12A1a of the present comparative example is configured as a semi-cylindrical surface extending in the vertical direction when viewed from the front as in the fifth embodiment. That is, the first emission surface 12A of this comparative example.
Unlike the sixth embodiment, 1a is not configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical in a front view.

Moreover, the reflective surface 12b and the shade 12c of this comparative example are arrange | positioned with the attitude | position which becomes horizontal by front view similarly to 5th Embodiment. That is, the first emission surface 12A1a of this comparative example is the sixth
Unlike the embodiment, the second emission surface 12A2b and the first emission surface 12 with respect to the horizontal in a front view.
It is not arranged in a posture inclined by a predetermined angle θ2 in the opposite direction to A1a.

As shown in FIG. 40C, the light distribution pattern formed by the vehicular lamp 10G of this comparative example greatly protrudes upward from the horizontal line, and it can be seen that it is not suitable as a low beam light distribution pattern.

  Next, the vehicular lamp 10H of the second comparative example will be described with reference to the drawings.

FIG. 41 (a) is a side view of the vehicular lamp 10H of the second comparative example (only the main optical surface), and FIG.
b) is a top view (only the main optical surface), and FIG. 41C is an example of a light distribution pattern formed by the vehicular lamp 10H.

As shown in FIGS. 41 (a) and 41 (b), the vehicular lamp 10H of the present comparative example has the first
The first emission surface 12A1a of the vehicular lamp 10G of the comparative example is the same as in the sixth embodiment when viewed from the front.
This corresponds to a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical.

That is, the first emission surface 12A1a of this comparative example is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical as seen from the front, similarly to the sixth embodiment.

Moreover, the reflective surface 12b and the shade 12c of this comparative example are arrange | positioned with the attitude | position which becomes horizontal by front view similarly to 5th Embodiment. That is, the first emission surface 12A1a of this comparative example is the sixth
Unlike the embodiment, the second emission surface 12A2b and the first emission surface 12 with respect to the horizontal in a front view.
It is not arranged in a posture inclined by a predetermined angle θ2 in the opposite direction to A1a.

As shown in FIG. 41 (c), the light distribution pattern formed by the vehicular lamp 10H of this comparative example greatly protrudes upward from the horizontal line, and it can be seen that it is not suitable as a low beam light distribution pattern.

Next, as an eighth embodiment, a problem when the camber angle θ1 is increased and a method for solving the problem will be described.

FIG. 42A shows the vehicular lamp 10 of the fifth embodiment when the camber angle θ1 is 30 °.
FIG. 42B shows an example of a low beam light distribution pattern formed by D (the same applies to the vehicular lamp 10F of the seventh embodiment). FIG. 42B shows the vehicular fifth embodiment when the camber angle θ1 is 45 °. It is an example of the light distribution pattern for low beams formed by the lamp 10D (the same applies to the vehicular lamp 10F of the seventh embodiment). The hatched area in FIG. 42 (b) indicates that the area is brighter than the similar area in FIG. 42 (a).

When the present inventors confirmed by simulation, the vehicular lamp 10D of the fifth embodiment (
When the camber angle θ1 is increased (for example, θ1 = 45 °) in the vehicular lamp 10F of the seventh embodiment (for example, θ1 = 45 °), it has been found that the area above the cut-off line becomes brighter as shown in FIG.

  The reason for this will be described below with reference to the drawings.

FIG. 43 is a sectional view of the vehicular lamp 10D of the fifth embodiment (only the main optical surface). FIG.
A line with an arrow at the tip in the middle represents an optical path followed by the light Ray2 from the light source 14 incident at a certain incident angle with respect to the first emission surface 12A1a.

When the camber angle θ1 is increased (for example, θ1 = 45 °) in the vehicle lamp 10D of the fifth embodiment (the same applies to the vehicle lamp 10F of the seventh embodiment), the camber angle θ1 is decreased (for example, θ1 = 30 °). ) As compared with the case, as shown in FIG. 43, the distance between the first exit surface 12A1a and the second entrance surface 12A2a is increased. Therefore, the second incident surface 12A of the light Ray2
The incident position with respect to 2a is lower than when the camber angle θ1 is small (for example, θ1 = 30 °), and the light Ray2 incident from the lower incident position is obliquely upward with respect to the horizontal as shown in FIG. It will be a traveling light. As a result, glare occurs and the cut-off line becomes unclear.

Even if the extraction angles α and β set on the first exit surface 12A1a and the second entrance surface 12A2a are increased, the light Ray2 becomes light traveling obliquely upward with respect to the horizontal for the same reason as described above. It has been found.

  Next, a method for solving the above problem will be described.

As a result of intensive studies to improve the above problems, the present inventors have found that the light Ray2 directed upward with respect to the horizontal is emitted from a partial region below the second emission surface 12A2b, This partial region is physically cut or light R emitted from the partial region
The idea that the above-mentioned problem can be improved by adjusting the surface shape (for example, curvature) of the partial region so that ay2 becomes parallel or downward light with respect to the first reference axis AX. Obtained.

FIG. 44A shows a partial region 12 below the second emission surface 12A2b based on the above knowledge.
In this example, A2b2 is physically cut to leave the upper region 12A2b1. in this way,
By cutting a partial region from which light that is originally directed obliquely upward with respect to the horizontal is cut, it is possible to suppress light traveling obliquely upward. As a result, the occurrence of glare can be suppressed and the cut-off line can be made clear.

FIG. 44B shows a partial region 12 below the second emission surface 12A2b based on the above knowledge.
The surface shape (for example, curvature) of the partial region 12A2b2 is adjusted so that the light Ray2 emitted from A2b2 becomes parallel or downward with respect to the first reference axis AX, and the second emission surface 12A2
In this example, b is divided into an upper region 12A2b1 and a lower region 12A2b2. As described above, light that travels obliquely upward can also be suppressed by adjusting the partial region from which light that is originally directed upward with respect to the horizontal is emitted as described above. As a result, the occurrence of glare can be suppressed and the cut-off line can be made clear.

The present inventors have confirmed by simulation that any of the above methods can suppress the above-mentioned problem, that is, that the area above the cut-off line can become brighter.

Next, as a ninth embodiment, a vehicle lamp 10I in which a second reference axis AX2 is inclined with respect to the first reference axis AX1 in a top view will be described with reference to the drawings.

FIG. 45 is a top view (only the main optical surface) of the vehicular lamp 10I in which the second reference axis AX2 is inclined with respect to the first reference axis AX1 in a top view.

As shown in FIG. 45, the vehicular lamp 10I of the present embodiment shades the second reference axis AX2 of the vehicular lamp 10D of the fifth embodiment (or the vehicular lamp 10F of the seventh embodiment). This is equivalent to an axis that is rotated by a predetermined angle about the center in the left-right direction of 12c and tilted with respect to the first reference axis AX1 in a top view.

According to the present embodiment, in addition to the effects of the fifth embodiment, the Fresnel reflection loss (particularly, the Fresnel reflection loss with respect to the second emission surface 12A2b to which the camber angle is given as shown in FIG. 45) is suppressed. As a result, the effect that the light utilization efficiency is improved can be achieved.

The concept of “inclining the second reference axis AX2 with respect to the first reference axis AX1 in a top view” described in the present embodiment is the vehicle lamp 10A (lens body 12A) of the fifth embodiment.
However, the present invention is not limited to this, and can also be applied to the vehicle lamps (lens bodies) of the first to fourth and sixth to eighth embodiments. Similarly, the present invention can be applied to a vehicular lamp 10J (lens body 12J) of a tenth embodiment described later.

Next, a vehicle lamp 10J (lens body 12J) according to a tenth embodiment will be described with reference to the drawings.

  The vehicular lamp 10J (lens body 12J) of the present embodiment is configured as follows.

46 is a perspective view of the vehicular lamp 10J (lens body 12J), FIG. 47 (a) is a top view, and FIG.
7 (b) is a front view, and FIG. 47 (c) is a side view. FIG. 48A shows an example of a low beam light distribution pattern P _LO (synthetic light distribution pattern) formed by the vehicular lamp 10J (lens body 12J), and each part shown in FIGS. 48B to 48D. It is formed by superimposing the distribution light patterns P _SPOT , P _MID and P _WIDE .

The lens body 12J of the present embodiment has a spot light distribution pattern P _SPOT (see FIG. _48B ).
Forming a lens body 12A similar to the first optical system of the second embodiment in addition to (FIG. 49 (a) see), further, a light distribution pattern for mid-diffused from the light distribution pattern P _SPOT spot P _MI
The second optical system (see FIG. 49B) forming _D (see FIG. 48C) and the wide light distribution pattern P _WIDE diffused from the mid light distribution pattern P _MID (FIG. 48D (D)) A third optical system (see FIG. 49C).

Hereinafter, differences from the vehicular lamp 10A (lens body 12A) of the second embodiment will be mainly described, and the same configuration as the vehicular lamp 10A (lens body 12A) of the second embodiment will be the same. Reference numerals are assigned and explanations thereof are omitted.

As shown in FIGS. 46 and 47, the lens body 12J of the present embodiment has the same configuration as the lens body 12A of the second embodiment, and includes a first rear end portion 12A1aa, a front end portion 12A1bb, and a first rear end portion 1.
A pair of left and right side surfaces 44a and 44b disposed between 2A1aa and the first front end 12A1bb
And a first lens portion 12A1 including a lower reflective surface 12b disposed between the first rear end portion 12A1aa and the first front end portion 12A1bb, and a second rear end disposed in front of the first lens portion 12A1. Part 12A2aa, a second lens part 12A2 including a second front end part 12A2bb, a connecting part 12A3 connecting the first lens part 12A1 and the second lens part 12A2, and a first rear end of the first lens part 12A1 The lens body includes an upper surface 44c disposed between the portion 12A1aa and the first front end portion 12A1bb.

The lens body 12J of the present embodiment is integrally molded by injecting a transparent resin such as polycarbonate or acrylic, cooling, and solidifying (by injection molding) as in the above embodiments.

FIG. 50A is a front view of the first rear end portion 12A1aa of the first lens portion 12A1, and FIG.
) Is an AA sectional view (schematic diagram) in FIG. 50A, and FIG. 50C is a BB sectional diagram (schematic diagram) in FIG. 50A.

As shown in FIGS. 50A and 50B, the first rear end portion 12A of the first lens portion 12A1.
1aa includes the first incident surface 12a and the first incident surface 12a on the left and right sides of the first incident surface 12a.
It includes a pair of left and right incident surfaces 42a and 42b disposed so as to surround the space between the light source 14 and the first incident surface 12a disposed in the vicinity from both the left and right sides. As shown in FIGS. 50A and 50C, the first rear end portion 12A1aa further includes a space between the light source 14 and the first incident surface 12a on the upper side of the first incident surface 12a. The upper incident surface 42 arranged so as to surround the
c is included.

  The tip of the lower reflecting surface 12b includes a shade 12c.

As shown in FIG. 46, the first front end portion 12A1bb of the first lens portion 12A1 includes a semicircular columnar first emission surface 12A1a extending in the vertical direction and a pair of left and right arranged on the left and right sides of the first emission surface 12A1a. Output surfaces 46a and 46b.

The second rear end portion 12A2aa of the second lens portion 12A2 includes a second incident surface 12A2a, and the second front end portion 12A2bb of the second lens portion 12A2 includes a second emission surface 12A2b.

The second exit surface 12A2b includes a semi-cylindrical region 12A2b3 extending in the horizontal direction, an extension region 12A2b4 extending obliquely upward and rearward from the upper edge of the semi-cylindrical region 12A2b3,
Is included.

The connecting part 12A3 includes the first lens part 12A1 and the second lens part 12A2 at the upper part thereof, the first front end part 12A1bb of the first lens part 12A1, the second rear end part 12A2aa of the second lens part 12A2, and the connecting part. The space S surrounded by the portion 12A3 is connected in a formed state.

  FIG. 49A is a side view of the first optical system (only the main optical surface).

As shown in FIG. 49A, the first incident surface 12a, the lower reflecting surface 12b (and the shade 12c).
), The first exit surface 12A1a, the second entrance surface 12A2a, and the second exit surface 12A2b (semi-cylindrical region 12A2b3) are from the light source 14 that has entered the first lens portion 12A1 from the first entrance surface 12a. Of the light Ray _SPOT , light partially blocked by the shade 12c, and
The light internally reflected by the lower reflection surface 12b is emitted from the first emission surface 12A1a, and further the second
The light enters the second lens portion 12A2 from the entrance surface 12A2a, exits from a partial region A1 (see FIG. 47B) of the second exit surface 12A2b (semi-columnar region 12A2b3), and is irradiated forward. Thus, as shown in FIG. 48 (b), the first light distribution pattern P _SPOT (corresponding to the first light distribution pattern of the present invention) including the cut-off line defined by the shade 12c at the upper edge is formed. An optical system is configured.

  FIG. 49B is a top view of the second optical system (only the main optical surface).

As shown in FIG. 49B, a pair of left and right entrance surfaces 42a and 42b and a pair of left and right side surfaces 44a.
44b, a pair of left and right exit surfaces 46a, 46b, a second entrance surface 12A2a, and a second exit surface 12A2b (semi-cylindrical region 12A2b3) are formed inside the first lens portion 12A1 from the pair of left and right entrance surfaces 42a, 42b. The light Ray _MID from the light source 14 that is incident on the light source and is internally reflected by the pair of left and right side surfaces 44a and 44b is emitted from the pair of left and right emission surfaces 46a and 46b.
The light enters the second lens portion 12A2 from the entrance surface 12A2a and mainly enters the second exit surface 12A2b (
Of the semi-cylindrical region 12A2b3), the regions A2 and A3 on the left and right sides of the partial region A1 (FIG. 47).
(B) by being irradiated forward emitted from the reference), as shown in FIG. 48 (c), is superimposed on the spot light distribution pattern P _SPOT, mid diffused from the light distribution pattern P _SPOT spot A second optical system for forming the light distribution pattern P _MID is configured.

The pair of left and right entrance surfaces 42a and 42b is refracted by light (mainly light Ray _MID spreading in the left and right direction, see FIG. _50B ) that does not enter the first entrance surface 12a among the light from the light source 14. As shown in FIG. 50 (b), the surface incident on the inside of one lens portion 12 </ b> A <b> 1 is configured as a curved surface (for example, a free curved surface) convex toward the light source 14.

As shown in FIG. 47A, the pair of left and right side surfaces 44a and 44b are a pair of left and right side surfaces as viewed from the top, from the first front end portion 12A1bb side of the first lens portion 12A1 toward the first rear end portion 12A1aa side. The space | interval between 44a, 44b is comprised as a curved surface (for example, free-form surface) convex toward the outer side which narrows in a taper shape. Also, a pair of left and right side surfaces 44a, 44
As shown in FIG. 47 (c), b is a first front end portion 12A of the first lens portion 12A1 in a side view.
The upper edge and the lower edge of the first rear end portion 12A1aa from the 1bb side toward the first rear end portion 12A1aa side are configured as surfaces having a tapered shape.

Note that the pair of left and right side surfaces 44a and 44b are configured to transmit the light Ray _MID from the light source 14 incident on the inside of the first lens unit 12A1 from the pair of left and right incident surfaces 42a and 42b to the pair of left and right emission surfaces 46a,
No metal vapor deposition is used on the reflection surface that reflects the inner surface (total reflection) toward 46b.

The pair of left and right emission surfaces 46a and 46b are configured as planar surfaces. of course,
Not limited to this, it may be configured as a curved surface.

With the second optical system having the above-described configuration, the mid light distribution pattern P _MID shown in FIG. _48C is formed on the virtual vertical screen.

The vertical dimension of the mid light distribution pattern P _MID is about 10 degrees in FIG.
Not limited to this, for example, it can be freely adjusted by adjusting the surface shape (for example, the curvature in the vertical direction) of the pair of left and right entrance surfaces 42a and 42b.

In addition, the position of the upper edge of the mid light distribution pattern P _MID is slightly below the horizontal line in FIG. 48C, but is not limited to this, and the surface shape of the pair of left and right entrance surfaces 42a and 42b (for example, left and right) It can be freely adjusted by adjusting the inclination of the pair of incident surfaces 42a and 42b.

Further, in FIG. _48C , the right end and the left end of the mid light distribution pattern P _MID extend to about 30 degrees to the right and about 30 degrees to the left, but the present invention is not limited to this. For example, a pair of left and right entrance surfaces 42a, 42
b and / or a pair of left and right side surfaces 44a and 44b (for example, respective curvatures in the horizontal direction) can be freely adjusted.

  FIG. 49C is a side view of the third optical system (only the main optical surface).

As shown in FIG. 49C, the upper incident surface 42c, the upper surface 44c, the coupling portion 12A3, and the second emission surface 12A2b (extended region 12A2b4) are arranged from the upper incident surface 42c to the first lens portion 12.
The light source 14 that has entered the inside of A1 and is internally reflected by the upper surface 44c and travels inside the connecting portion 12A3.
As shown in FIG. 48D, the light Ray _WIDE from the light exits from the second emission surface 12A2b (region A4 above each of the regions A1 to A3, that is, the extension region 12A2b4) and is irradiated forward.
As shown in), it is superimposed on the light distribution pattern P _SPOT and mid light distribution pattern P _MID spot, third optical system for forming a wide light distribution pattern P _WIDE diffused from mid light distribution pattern P _MID Is configured.

The upper incident surface 42c is light that is not incident on the first incident surface 12a among the light from the light source 14 (mainly,
Light Ray _Wide spreading upward. 50 (c)) is refracted and incident on the inside of the first lens portion 12A1, and as shown in FIG. 50 (c), a curved surface (for example, a free-form surface) convex toward the light source 14. It is configured as.

As shown in FIGS. 46 and 49 (c), the upper surface 44c has a first lens portion 12A1 in a side view.
The first front end portion 12A1bb side of the first rear end portion 12A1aa side is configured as a curved surface that protrudes obliquely downward. Further, the upper surface 44c is formed as shown in FIG.
As shown in a), when viewed from above, the left and right edges of the first lens portion 12A1 are tapered so as to be tapered from the first front end portion 12A1bb side toward the first rear end portion 12A1aa side. Has been. Specifically, the upper surface 44c is such that the light Ray _WIDE from the light source 14 (more precisely, the reference point F) incident on the first lens portion 12A1 from the upper incident surface 42c becomes parallel light in the vertical direction. The surface shape is configured. Further, the upper surface 44c extends in a direction perpendicular to the paper surface in FIG. 49C with respect to the horizontal direction.

The upper surface 44c is the light source 1 that has entered the first lens unit 12A1 from the upper incident surface 42c.
4 is a reflective surface that internally reflects (totally reflects) the light Ray _WIDE from 4 toward the second emission surface 12A2b (extended region 12A2b4), and does not use metal deposition.

The extension region 12A2b4 is configured as a planar surface extending obliquely upward and rearward from the upper edge of the second emission surface 12A2b (semi-columnar region 12A2b3). Of course, not limited to this, it may be configured as a curved surface. The semi-cylindrical region 12A2b3
And the extension region 12A2b4 are smoothly connected without a step.

Top 44c, as shown in FIG. 49 (c), includes a reflecting surface for overhead sign 44c1 for forming a light distribution pattern P _OH for overhead sign irradiating the cutoff line above the road signs and the like. The overhead sign reflecting surface 44c1 is formed by the upper incident surface 42.
The light RayOH from the light source 14 incident on the inside of the first lens portion 12A1 from c, reflected by the overhead sign reflection surface 44c1, and traveling inside the coupling portion 12A3 is reflected on the second emission surface 12A.
4b (extended region 12A2b4) and irradiated obliquely upward and forward, FIG.
As shown in FIG. 8 (d), the overhead sign light distribution pattern P is located above the cut-off line.
The surface shape is configured to form _OH . The overhead sign reflecting surface 44c1 can be omitted as appropriate.

As the third optical system, instead of the above, the upper incident surface 42c, the connecting portion 12A3, and
The second output surface 12A2b (extended region 12A2b4) includes the light ray _WIDE from the light source 14 that has entered the first lens unit 12A1 from the upper incident surface 42c and travels inside the coupling unit 12A3 without being internally reflected. As shown in FIG. 48 (d), the light is emitted directly from the two exit surfaces 12A2b (extension regions 12A2b4) and irradiated forward, thereby providing a wide light distribution pattern P _WI.
An optical system for forming _DE may be used.

With the third optical system configured as described above, the wide light distribution pattern P _WIDE and the overhead sign light distribution pattern P _{OH shown} in FIG. _48D are formed on the virtual vertical screen.

The vertical dimension of the wide light distribution pattern P _WIDE is about 15 degrees in FIG.
Not limited to this, for example, it can be freely adjusted by adjusting the surface shape (for example, the curvature in the vertical direction) of the upper incident surface 42c.

Further, the position of the upper edge of the wide light distribution pattern P _WIDE is along the horizontal line in FIG. 48D, but is not limited to this, and can be freely adjusted by adjusting the inclination of the upper surface 44c. .

In the present embodiment, as shown in FIG. 46, the upper surface 44c includes a left upper surface 44c2 and a right upper surface 44c3 that are divided into left and right by a vertical surface including the reference axis AX1, and each of the left upper surface 44c2 and the right upper surface 44c3. The slopes are different from each other. Specifically, the upper left surface 44c2
Is inclined below the right upper surface 44c3. As a result, as shown in FIG. 48D, the wide light distribution pattern P _WIDE includes a cut-off line having a left-right step difference with the upper end edge on the left side lower than the upper end edge on the right side with respect to the vertical line. (If you are driving on the right side) Of course, conversely, the left upper surface 44c2 may be tilted above the right upper surface 44c3. As a result, the wide light distribution pattern P _WIDE can include a cut-off line having a left-right step difference in which the upper end edge on the left side is higher than the upper end edge on the right side with respect to the vertical line (in the case of left-hand traffic).

In addition, the right end and the left end of the wide light distribution pattern P _WIDE extend to about 65 degrees to the right and to about 65 degrees to the left in FIG. 48D. However, the present invention is not limited to this. For example, the upper incident surface 42c (for example, It can be adjusted freely by adjusting the curvature in the horizontal direction.

According to this embodiment, in addition to the effects of the second embodiment, the following effects can be further achieved.

That is, first, it is possible to provide a lens body 12J that can maintain a line-like light emission appearance even when the viewpoint position changes, and a vehicle lamp 10J including the lens body 12J. Second,
It is possible to provide a lens body 12J capable of realizing the appearance of uniform light emission (or substantially uniform light emission) and a vehicle lamp 10J including the lens body 12J. Third, the efficiency of taking light from the light source 14 into the lens body 12J is dramatically improved. Fourthly, it is possible to provide a lens body 12J having a sense of unity extending in a line shape in a predetermined direction and a vehicular lamp 10J including the lens body 12J. Fifth, the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface 12A2b.
3 (a semi-cylindrical refracting surface), a lens body 12J capable of forming a spot light distribution pattern P _SPOT condensed in the horizontal direction and the vertical direction, and a vehicle lamp 10J provided with the lens body 12J Can be provided.

One lens body 12J can maintain a line-like light emission appearance even if the viewpoint position changes, that is, a plurality of light distribution patterns having different degrees of diffusion, that is, a spot light distribution pattern P _SPOT (the present invention). Light distribution pattern P _MID (corresponding to the second light distribution pattern of the present invention) and wide light distribution pattern P _WIDE (corresponding to the third light distribution pattern of the present invention). A plurality of optical systems to be formed, that is, the first optical system (see FIG. 49A), the second
This is because the optical system (see FIG. 49B) and the third optical system (see FIG. 49C) are provided. In order to achieve this effect, at least the first optical system (see FIG. 49A).
And the second optical system (see FIG. 49B) may be provided, and the third optical system (see FIG. 49C) can be omitted as appropriate.

Appearance of uniform light emission (or substantially uniform light emission) can be realized by the first lens portion from each incident surface, that is, the first incident surface 12a, the pair of left and right incident surfaces 42a and 42b, and the upper incident surface 42c. The light from the light source 14 incident on the inside of 12A1 is reflected by the respective reflecting surfaces, that is, the lower reflecting surface 12b, the pair of left and right side surfaces 44a and 44b, and the upper surface 44c.
In addition to the multi-point light emission inside 2J (see FIG. 51), the reflected light from the respective reflecting surfaces, that is, the lower reflecting surface 12b, the pair of left and right side surfaces 44a and 44b, and the upper surface 44c is the final emitting surface. Uniform emission from almost the entire area of the second emission surface 12A2b, that is, the lower reflection surface 1
The second light exit surface 12A2b (semi-cylindrical region 12A) from which the reflected light from 2b is the final light exit surface
2b3) is emitted from a partial area A1 (see FIG. 47B), and a pair of left and right side surfaces 44a,
Reflected light from 44b is mainly the final emission surface of the second emission surface 12A2b (semi-cylindrical region 12A2b3), and the left and right regions A2, A3 of the partial region A1 (see FIG. 47B). )
And the reflected light from the upper surface 44c is mainly the second emission surface 12A2 that is the final emission surface.
This is due to emission from b (region A4 above each region A1 to A3, ie, extension region 12A2b4). In order to achieve this effect, at least the first optical system (FIG. 49 (
a) and a second optical system (see FIG. 49B), and a third optical system (see FIG. 4).
9 (c)) can be omitted as appropriate.

The efficiency of taking the light from the light source 14 into the lens body 12J is greatly improved because the respective incident surfaces, that is, the first incident surface 12a, the pair of left and right incident surfaces 42a and 42b, and the upper incident surface 42c are light sources. 14 (see FIGS. 50A to 50C).
It is because. In order to achieve this effect, at least the first incident surface 12a and the pair of left and right incident surfaces 42a and 42b may be provided, and the upper incident surface 42c can be omitted as appropriate.

The vehicular lamp 10J (lens body 12J) of the present embodiment is based on the above-described concept of the first emission surface 1.
Although it corresponds to what is applied to the vehicular lamp 10A of the second embodiment including 2A1a and the second emission surface 12A2b, it is not limited thereto. That is, the above concept is applied to the vehicular lamp 10 according to the first embodiment including one emission surface, for example, other than the vehicular lamp 10A according to the second embodiment including the first emission surface 12A1a and the second emission surface 12A2b. It can also be applied.

The second output surface 12A2b, which is the final output surface, can be configured as a semi-cylindrical surface 12A2b3 (a semi-cylindrical refracting surface). It is because it is.

The spot light distribution pattern P _SPOT condensed in the horizontal direction and the vertical direction even though the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface 12A2b3 (a semi-cylindrical refractive surface). The first lens portion 12A1 of the first lens portion 12A1 can mainly form the light in the horizontal direction.
The exit surface 12A1a (a semi-cylindrical refracting surface) takes charge, and mainly focuses the light in the vertical direction on the lens body 12J.
This is because the second exit surface 12A2b (a semi-cylindrical refractive surface) of the second lens portion 12A2, which is the final exit surface, takes charge. That is, it is due to the decomposition of the light collecting function.

In addition, each idea explained in the first to ninth embodiments and the modifications thereof, for example, the idea of “giving camber angle” explained in the fifth embodiment, and the occurrence of this camber angle. The concept of improving the blur as described above, the concept of “giving a slant angle” explained in the sixth embodiment, and the rotation generated with the grant of the slant angle as described above The idea of suppressing, the idea of “giving camber angle and slant angle” explained in the seventh embodiment, and the blur and rotation generated by the provision of the camber angle and slant angle are as described above. Of course, the idea of improvement and suppression can be applied to the vehicular lamp 10J (lens body 12J) of the present embodiment.

In the tenth embodiment, the second optical system (see FIG. 49B) is configured to form the mid light distribution pattern P _MID , and the third optical system (see FIG. 49C) is configured. Although the example configured to form the wide light distribution pattern P _WIDE has been described, the present invention is not limited to this.

For example, on the contrary, the second optical system (see FIG. 49 (b)) has a wide light distribution pattern P _{WI.
The DE} may be formed, and the third optical system (see FIG. 49C) may be configured to form the mid light distribution pattern P _MID .

For example, the surface shape (for example, the curvature in the horizontal direction) of the pair of left and right entrance surfaces 42a and 42b and / or the pair of left and right side surfaces 44a and 44b constituting the second optical system is adjusted as shown in FIG. Thus, the light distribution pattern can be expanded (for example, in the horizontal direction), as shown in FIG.
The light distribution pattern can be narrowed (for example, in the horizontal direction) by adjusting as shown in FIG. Accordingly, by adjusting the surface shape (for example, the curvature in the horizontal direction) of the pair of left and right entrance surfaces 42a and 42b and / or the pair of left and right side surfaces 44a and 44b constituting the second optical system, the mid light distribution pattern can be obtained. Not limited to this, a wide light distribution pattern can also be formed.

Similarly, by adjusting the surface shape (for example, the curvature in the horizontal direction) of the upper incident surface 42c constituting the third optical system as shown in FIG. 55A, the light distribution pattern (for example, in the horizontal direction) is adjusted. ) And the light distribution pattern can be narrowed (for example, in the horizontal direction) by adjusting as shown in FIG. Therefore, by adjusting the surface shape (for example, the curvature in the horizontal direction) of the upper incident surface 42b constituting the third optical system, not only the wide light distribution pattern,
A mid light distribution pattern can also be formed.

Of course, the second optical system (see FIG. 49B) and the third optical system (see FIG. 49C)
In either case, the wide light distribution pattern P _WIDE may be formed. Conversely, the second optical system (see FIG. 49B) and the third optical system (see FIG. 49C) may both be configured to form the mid light distribution pattern P _MID. .

Next, a vehicle lamp 10K (lens body 12K) according to an eleventh embodiment will be described with reference to the drawings.

  The vehicular lamp 10K (lens body 12K) of the present embodiment is configured as follows.

56 is a perspective view of the vehicular lamp 10K (lens body 12K), FIG. 57 (a) is a top view, and FIG.
7 (b) is a front view and FIG. 57 (c) is a side view. FIG. 58A shows an example of a low beam light distribution pattern P _LO (composite light distribution pattern) formed by the vehicular lamp 10K (lens body 12K), and each part shown in FIGS. 58B to 58D. It is formed by superimposing the distribution light patterns P _SPOT , P _MID and P _WIDE .

The lens body 12K of the present embodiment is similar to the tenth embodiment in that the spot light distribution pattern P _{SP is used.}
First optical system (see FIGS. 59 (a) and 59 (b)) forming _OT (see FIG. 58 (b)), light distribution pattern P _MID for mid diffused from spot light distribution pattern P _SPOT (FIG. 58 (c)) and a wide light distribution pattern P _WIDE (see FIG. 58 (d)) diffused from the mid light distribution pattern P _MID . A third optical system to be formed (see FIG. 60B) is provided.

Hereinafter, differences from the vehicular lamp 10J (lens body 12J) of the tenth embodiment will be mainly described, and the same configurations as those of the vehicular lamp 10J (lens body 12J) of the tenth embodiment will be described. Reference numerals are assigned and explanations thereof are omitted.

As shown in FIGS. 56 and 57, the lens body 12K of the present embodiment is a lens body arranged in front of the light source 14, and includes a rear end portion 12Kaa, a front end portion 12Kbb, a rear end portion 12Kaa, and a front end portion 12Kbb. Including a pair of left and right side surfaces 44a and 44b, an upper surface 44c and a lower surface 44d, and the light from the light source 14 (precisely, the reference point F) incident on the lens body 12K is transmitted to the front end portion 12Kbb ( The lens body is configured to form a low beam light distribution pattern P _Lo (corresponding to the predetermined light distribution pattern of the present invention) shown in FIG. 58A by being emitted from the emission surface 12Kb) and irradiated forward. Yes. The lens body 12K includes a lower reflecting surface 12b disposed between the rear end portion 12Kaa and the front end portion 12Kbb, and the rear end portion 1 from the front end portion 12Kbb side.
It is configured as a bell-shaped lens body that narrows in a cone shape toward the 2Kaa side.

The lens body 12K of this embodiment is integrally molded by injecting a transparent resin such as polycarbonate and acrylic, cooling, and solidifying (by injection molding) as in the above embodiments.

FIG. 61A is a front view of the rear end portion 12Kaa of the lens body 12K, and FIG.
A-A1 sectional view (schematic diagram) of a), FIG. 61 (c) is a B1-B1 sectional view of FIG. 61 (a) (
FIG.

As shown in FIGS. 61 (a) and 61 (b), the rear end portion 12Kaa of the lens body 12K has the first incident surface 12a and the first incident surface on the left and right sides of the first incident surface 12a. It includes a pair of left and right incident surfaces 42a and 42b disposed so as to surround the space between the surface 12a from both the left and right sides. As shown in FIGS. 61 (a) and 61 (c), the rear end portion 12Kaa
On the upper side of the first incident surface 12a, an upper incident surface 42c disposed so as to surround the space between the light source 14 and the first incident surface 12a from above is included.

  The tip of the lower reflecting surface 12b includes a shade 12c.

The front end portion 12Kbb of the lens body 12K includes an exit surface 12Kb, and the exit surface 12K.
As shown in FIG. 56, b is an exit surface 12d (convex surface convex forward) similar to that of the first embodiment, and a pair of left and right exit surfaces 46a, 46b disposed on the left and right sides of the exit surface 12d. In addition, the exit surface 46c disposed above the exit surface 12d and the pair of left and right exit surfaces 46a and 46b.
Is included. The exit surface 12d and the pair of left and right exit surfaces 46a and 46b (and the exit surface 46c) are smooth without a step through a joint surface 46d (a surface not intended for an optical function) surrounding the periphery of the exit surface 12d. It is connected.

  FIG. 59A is a side view of the first optical system, and FIG. 59B is an enlarged side view.

As shown in FIGS. 59A and 59B, the first incident surface 12a, the lower reflecting surface 12b (and the shade 12c), and the exit surface 12Kb are incident on the inside of the lens body 12K from the first incident surface 12a. Of the light Ray _SPOT from the light source 14, the light partially shielded by the shade 12c and the light internally reflected by the lower reflecting surface 12b are part of the region A1 (exiting surface 12d, FIG. 57 (b) of the emitting surface 12Kb. b), the spot light distribution pattern P _SPOT including the cut-off line defined by the shade 12c at the upper edge as shown in FIG. 58 (b). 1st optical system which forms a 1st light distribution pattern) is comprised.

  FIG. 60A is a top view of the second optical system.

As shown in FIG. 60A, a pair of left and right entrance surfaces 42a and 42b and a pair of left and right side surfaces 44a.
44b and the exit surface 12Kb are formed from the pair of left and right entrance surfaces 42a and 42b.
Light Ra from the light source 14 that has entered the interior of K and is internally reflected by the pair of left and right side surfaces 44a and 44b
y _MID is emitted from the regions A2 and A3 (a pair of left and right emission surfaces 46a and 46b; see FIG. 57B) mainly on the left and right sides of the partial area A1 of the emission surface 12Kb, and is irradiated forward. Thus, as shown in FIG. 58 (c), the second optical system for forming the mid light distribution pattern P _MID diffused from the spot light distribution pattern P _SPOT superimposed on the spot light distribution pattern P _SPOT is configured. doing.

The pair of left and right entrance surfaces 42a and 42b are refracted by light (mainly light Ray _MID spreading in the left-right direction, see FIG. _61B ) that does not enter the first entrance surface 12a among the light from the light source 14. As shown in FIG. 61 (b), the surface that enters the body 12K is configured as a curved surface (for example, a free curved surface) that is convex toward the light source.

As shown in FIG. 57 (a), the pair of left and right side surfaces 44a and 44b are, when viewed from above, the front end portion 12.
As the distance from the Kbb side toward the rear end 12Kaa side, the space between the pair of left and right side surfaces 44a, 44b is formed as a curved surface (for example, a free-form surface) that protrudes toward the outside. In addition, as shown in FIG. 57 (c), the pair of left and right side surfaces 44a and 44b has a shape in which the upper edge and the lower edge are tapered in a side view from the front end portion 12Kbb side toward the rear end portion 12Kaa side. It is configured as a surface.

Note that the pair of left and right side surfaces 44a and 44b receive the light Ray _MID from the light source 14 incident on the inside of the lens body 12K from the pair of left and right entrance surfaces 42a and 42b, and the pair of left and right exit surfaces 46a and 46b.
This is a reflective surface that is internally reflected (totally reflected) toward the surface, and does not use metal deposition.

The pair of left and right emission surfaces 46a and 46b are configured as planar surfaces. of course,
Not limited to this, it may be configured as a curved surface.

With the second optical system having the above-described configuration, the mid light distribution pattern P _MID shown in FIG. _58C is formed on the virtual vertical screen.

The vertical dimension of the mid light distribution pattern P _MID is about 15 degrees in FIG.
Not limited to this, for example, it can be freely adjusted by adjusting the surface shape (for example, the curvature in the vertical direction) of the pair of left and right entrance surfaces 42a and 42b.

In addition, the position of the upper edge of the mid light distribution pattern P _MID is along the horizontal line in FIG. 58C, but is not limited to this, and the surface shape of the pair of left and right entrance surfaces 42a and 42b (for example, the pair of left and right sides) Can be freely adjusted by adjusting the inclination of the incident surfaces 42a and 42b.

Further, the right end and the left end of the mid light distribution pattern P _MID extend to about 55 degrees to the right and about 55 degrees to the left in FIG. 58C, but the present invention is not limited to this. 42
b and / or a pair of left and right side surfaces 44a and 44b (for example, respective curvatures in the horizontal direction) can be freely adjusted.

  FIG. 60B is a side view of the third optical system.

As shown in FIG. 60B, the upper incident surface 42c, the upper surface 44c, and the exit surface 12Kb are
The light source 14 that has entered the lens body 12K from the upper incident surface 42c and is internally reflected by the upper surface 44c.
Ray _WIDE from the light is mainly from the partial area A1 and the area A2 on both the left and right sides of the partial area A1 in the emission surface 12Kb (the emission surface 46c, see FIG. 57 (b)). by being irradiated forward emitted, as shown in FIG. 58 (d), is superimposed on the light distribution pattern for spot P _sPOT and mid light distribution pattern P _MID, mid light distribution pattern P _MID
A third optical system that forms a more diffused light distribution pattern for wide P _PIDE is configured.

The upper incident surface 42c is light that is not incident on the first incident surface 12a among the light from the light source 14 (mainly,
Light Ray _Wide spreading upward. 61 (c)) is a surface that is refracted and is incident on the inside of the lens body 12K. As shown in FIG. 61 (c), a surface with a curved surface convex toward the light source 14 (for example,
Free-form surface).

As shown in FIGS. 56 and 57 (c), the upper surface 44c is a curved surface that is convex outward in an obliquely inclined downward direction from the front end portion 12Kbb side to the rear end portion 12Kaa side of the lens body 12K. It is configured as a shape surface. Further, the upper surface 44c, as shown in FIG.
When viewed from above, the left and right edges of the lens body 12K are tapered so as to be tapered from the front end 12Kbb side to the rear end 12Kaa side. In particular,
The upper surface 44c is formed of the light source 14 (more precisely, the light incident on the lens body 12K from the upper incident surface 42c.
The surface shape is configured so that the light Ray _WIDE from the reference point F) becomes parallel light in the vertical direction. Further, the upper surface 44c extends in a direction perpendicular to the paper surface in FIG. 57 (c) with respect to the horizontal direction.

The upper surface 44c is a reflective surface that internally reflects (totally reflects) the light Ray _WIDE from the light source 14 that has entered the lens body 12K from the upper incident surface 42c toward the emission surface 46c, and does not use metal deposition.

The emission surface 46c is configured as a planar surface. Of course, not limited to this, it may be configured as a curved surface.

The third optical system includes an upper incident surface 42c and an output surface 46c instead of the above, and the light Ray _WIDE from the light source 14 that has entered the lens body 12K from the upper incident surface 42c is internally reflected. Without being directly emitted from the emission surface 46c and irradiated forward, FIG.
As shown in FIG. 8D, an optical system for forming the wide light distribution pattern P _WIDE may be used.

A wide light distribution pattern P _WIDE shown in FIG. _58D is formed on the virtual vertical screen by the third optical system having the above-described configuration.

The vertical dimension of the wide light distribution pattern P _WIDE is about 15 degrees in FIG.
Not limited to this, for example, it can be freely adjusted by adjusting the surface shape (for example, the curvature in the vertical direction) of the upper incident surface 42c.

Further, the position of the upper end edge of the wide light distribution pattern P _WIDE is substantially along the horizontal line in FIG. 58D, but is not limited thereto, and can be freely adjusted by adjusting the inclination of the upper surface 44c. it can.

In the present embodiment, as shown in FIG. 56, the upper surface 44c includes a left upper surface 44c2 and a right upper surface 44c3 that are divided into left and right by a vertical surface including the reference axis AX1, and each of the left upper surface 44c2 and the right upper surface 44c3. The slopes are different from each other. Specifically, the upper left surface 44c2
Is inclined below the right upper surface 44c3. As a result, as shown in FIG. 58 (d), the wide light distribution pattern P _WIDE includes a cut-off line having a left-right step difference with the upper end edge on the left side lower than the upper end edge on the right side with respect to the vertical line. (If you are driving on the right side) Of course, conversely, the left upper surface 44c2 may be tilted above the right upper surface 44c3. As a result, the wide light distribution pattern P _WIDE can include a cut-off line having a left-right step difference in which the upper end edge on the left side is higher than the upper end edge on the right side with respect to the vertical line (in the case of left-hand traffic).

In addition, the right end and the left end of the wide light distribution pattern P _WIDE extend to about 60 degrees to the right and about 60 degrees to the left in FIG. 58D, but the present invention is not limited to this. For example, the upper incident surface 42c (for example, It can be adjusted freely by adjusting the curvature in the horizontal direction.

  Next, the appearance of the lens body 12K when the light source 14 is not turned on will be described.

The lens body 12K of the present embodiment is viewed from multiple directions when the light source 14 is not turned on.
It looks as if it has a “glitter” as if the inside of the lens body is emitting light.

This is because the external light (for example, sunlight) that enters the lens body 12K from the exit surface 12Kb easily satisfies the condition for internal reflection (total reflection) inside the lens body 12K. Is configured as a bell-shaped lens body in which the lens body 12K narrows in a cone shape from the front end portion 12Kbb side toward the rear end portion 12Kaa side (see FIGS. 57A and 57C). In addition to the first condition, at least one of the incident surfaces 12a, 42a, 42b, and 42c is V-shaped (or V-shaped) opened toward the front end 12Kbb in a top view and / or a side view. (Refer to the dotted line circles (thick lines) indicated by reference numerals C1 to C4 in FIGS. 62A to 62C) (second condition). Note that it is only necessary to satisfy at least one of the first condition and the second condition.

For example, the pair of left and right entrance surfaces 42a and 42b form a V-shape that is open toward the front end portion 12Kbb in a side view (reference numeral C1 in FIGS. 62 (a) and 62 (c)). (See the dotted circle (thick line)). Further, the pair of left and right entrance surfaces 42a and 42b has a front end portion 1 as viewed from above.
It constitutes a part of a V-shape that opens toward the 2 Kbb side (reference C2 in FIG. 62 (b)).
(See the dotted circle (thick line).) The first incident surface 12a is a front end portion 12K in a top view.
It forms a V-shape that opens toward the bb side (see the dotted circle (thick line) indicated by the symbol C3 in FIG. 62B). Further, the upper incident surface 42c constitutes a part of a V shape opened toward the front end portion 12Kbb in a side view (inside the dotted circle indicated by the symbol C4 in FIG. 62C (thick line) )reference).

As described above, in addition to the lens body 12K being configured as a bell-shaped lens body that narrows in a cone shape from the front end portion 12Kbb side toward the rear end portion 12Kaa side, the incident surface 12a
, 42a, 42b, and 42c constitute a V-shape (or a part of the V-shape) that is open toward the front end 12Kbb in a top view and / or a side view. External light (for example, sunlight) incident on the inside of the lens body 12K from the surface 12Kb repeats internal reflection (total reflection) inside the lens body 12K (such as the V-shaped portion), and most of the light is emitted again. It emits in various directions from 12Kb.

For example, the external light RayCC shown in FIGS. 63A and 63B enters the lens body 12K from the exit surface 12Kb, and is internally reflected in this order by the left side surface 44a and the right side surface 44b.
After being totally reflected, the light exits again from the exit surface 12Kb. Further, for example, external light RayDD shown in FIGS. 63A and 63C is incident on the inside of the lens body 12K from the emission surface 12Kb.
After being internally reflected (total reflection) in this order by the lower surface 44d, the upper incident surface 42c, and the upper surface 44c, the light is again emitted from the emission surface 12Kb.

In an actual driving environment (for example, a driving environment in the daytime), the external light RayCC, Ray
Not only DD but external light (for example, sunlight) from all directions is incident on the inside of the lens body 12K, and internal reflection (total reflection) is repeated inside the lens body 12K (the V-shaped portion or the like). Most of the light is emitted again in various directions from the exit surface 12Kb (see FIG. 64). As a result, when the light source 14 is not lit, the lens body 12K has a “glitter” appearance as if the lens body is emitting light when viewed from multiple directions. FIG.
A light source 50 that is regarded as external light is arranged in front of the lens body 12K, and represents an optical path (simulation result) followed by light from the light source 50 that has entered the lens body 12K from the exit surface 12Kb.

According to the present embodiment, in addition to the effects of the tenth embodiment, the following effects can be further achieved.

That is, the lens body 12K whose appearance does not become monotonous and the vehicular lamp 1 including the lens body 12K
0K, especially for a vehicle equipped with the lens body 12K having a “glitter” appearance as if the inside of the lens body is emitting light when viewed from multiple directions when the light source 14 is not lit. A lamp 10K can be provided. As a result, the visibility when the light source 14 is not turned on (the vehicular lamp 10K, and thus the visibility of the vehicle on which the light is mounted) can be improved.

The appearance does not become monotonous because the lens body 12K is not a conventional simple plano-convex lens, but a pair of left and right side surfaces 44a, 44 disposed between the rear end portion 12Kaa and the front end portion 12bb.
This is because the cross section surrounded by b, the upper surface 44c and the lower surface 44d is configured as a rectangular lens body.

In addition, when the light source 14 is not turned on, the lens body 12K is viewed from the front end portion 12Kbb side when viewed from multiple directions. In addition to being configured to narrow in a conical shape toward the rear end portion 12Kaa, at least one of the incident surfaces has a front end portion 12K in top view and / or side view.
As a result of constituting a V-shape or a part of the V-shape opened toward the bb side, the exit surface 12K
External light (for example, sunlight) that has entered the lens body 12K from b repeats internal reflection (total reflection) inside the lens body 12K (such as the V-shaped portion), and most of the light is again emitted from the exit surface 12Kb. This is because the light is emitted in various directions.

In addition, each idea demonstrated in the said 1st-10th embodiment and each modification, for example, 2nd
The concept of “decomposing the light collecting function” described in the embodiment, the concept of “giving a camber angle” described in the fifth embodiment, and the blur that occurs due to the provision of the camber angle are as described above. And the concept of “providing a slant angle” explained in the sixth embodiment, and the idea of suppressing the rotation generated with the application of the slant angle as described above. The concept of `` giving camber angle and slant angle '' explained in the embodiment, and the idea of improving and suppressing the blur and rotation generated with the provision of the camber angle and slant angle as described above. Of course, it is applicable to the vehicular lamp 10K (lens body 12K) of the present embodiment.

Next, a lens body 12L, which is a first modification of the lens body 12K of the eleventh embodiment, will be described with reference to the drawings.

FIG. 65A is a longitudinal sectional view showing an optical path followed by the light from the light source 14 incident on the lens body 12K of the eleventh embodiment, and FIG. 65B is a perspective view of the lens body 12L of this modification. .

As a result of a simulation confirmed by the present inventors, as shown in FIG. 65 (a), in the lens body 12K of the eleventh embodiment, the light enters the lens body 12K from each of the incident surfaces 12a, 42a, 42b, and 42c. It has been found that the light from the light source 14 does not enter the lower surface 44d, that is, the lower surface 44d is a region that is not used to form the light distribution patterns P _SPOT , P _MID , and P _WIDE .

As shown in FIG. 65 (b), the lens body 12L of this modification example has each light distribution pattern P _SPOT.
, P _MID , P _WIDE are not used to form a plurality of quadrangular pyramid-shaped lens cuts L on the lower surface 44d.
Corresponding to C (for example, a projection angle of 30 °, a pitch of 5 mm, and a peak height of 3 mm).
Otherwise, the configuration is the same as the lens body 12K of the eleventh embodiment. Each lens cut LC may have the same size and the same shape, or may have a different size and a different shape. Moreover, it may be arrange | positioned and may be arrange | positioned at random.

According to this modification, in addition to the effects of the eleventh embodiment, the following effects can be further achieved.

That is, when the light source 14 is not lit, the lens body 12L that looks as if the inside of the lens body is emitting light when viewed from multiple directions, and the vehicular lamp 10L including the lens body 12L. Can be provided. As a result, the visibility when the light source 14 is not turned on (the vehicular lamp 10L, and thus the visibility of the vehicle on which the light is mounted) can be enhanced.

This is because the external light (for example, sunlight) that has entered the lens body 12L from the exit surface 12Kb is converted into a plurality of square pyramid-shaped lens cuts L provided inside the lens body 12L (lower surface 44d).
C) and the like, the light is internally reflected (totally reflected) in various directions and is emitted again in various directions from the emission surface 12Kb.

In order to confirm this effect, the inventors actually manufactured the lens body 12L of the present modification and the lens body of the comparative example (the lens body 12K of the eleventh embodiment), and each of the exit surfaces 12Kb has a luminance. Measurement was performed using a meter (trade name: Prometric).

66 (a) to 66 (c) are diagrams showing measurement results (luminance distribution) of the exit surface 12Kb of the lens body 12L of this modification, and FIGS. 66 (d) to 66 (f) are comparative examples. It is a figure showing the measurement result (luminance distribution) of the output surface 12Kb of a lens body (lens body 12K of 11th Embodiment). The numerical value in each figure represents the measurement position. For example, 0 ° left and right and 0 ° up and down in FIG.
The measurement position of the measurement result (luminance distribution) shown in the figure is 0 ° left and right with respect to the center of the exit surface 12Kb,
This indicates that the position is 0 ° in the vertical direction (that is, directly in front). The same applies to other figures. In each figure, the black portion indicates that the luminance is relatively low, and the white portion indicates that the luminance is relatively high.

66 (a) to 66 (f), the lens body 12L of the present modified example having the lower surface 44d provided with a plurality of quadrangular pyramid-shaped lens cuts LC has a flat lower surface 44d. From the lens body of the example (lens body 12K of the eleventh embodiment), the white portion and the black portion are clearly separated over the entire exit surface 12Kb, that is, the lens body 12L of the present modification.
Compared with the lens body of the comparative example (lens body 12K of the eleventh embodiment), when the light source 14 is not lit, there is a “glitter” as if it is emitting light when viewed from multiple directions. You can see that it looks good.

The lower surface 44d is not limited to a surface including a plurality of quadrangular pyramid-shaped lens cuts LC, and external light that enters the lens body 12L from the exit surface 12Kb and reaches the lower surface 44d is internally reflected in various directions ( What is necessary is just to be comprised as a surface which is totally reflected) and radiate | emits again from the output surface 12Kb. For example, the lower surface 44d may be configured as a surface including a plurality of lens cuts having a polygonal pyramid shape other than a quadrangular pyramid shape, or configured as a surface including a textured surface or a cut surface including a plurality of other minute irregularities. May be.

Next, a lens body 12M that is a second modification of the lens body 12K of the eleventh embodiment will be described with reference to the drawings.

FIG. 67A is a transverse sectional view showing an optical path followed by the light from the light source 14 that has entered the lens body 12K of the eleventh embodiment, and FIG. 67B is a perspective view of the lens body 12M of the present modification. .

As a result of a simulation confirmed by the present inventors, as shown in FIG. 67 (a), in the lens body 12K of the eleventh embodiment, the light enters the lens body 12K from each of the incident surfaces 12a, 42a, 42b, and 42c. The light from the light source 14 does not enter the extension regions 44aa and 44bb extended forward (for example, in a direction parallel to the reference axis AX1) from the front end edges of the pair of left and right side surfaces 44a and 44b. It has been found that the extended regions 44aa and 44bb are regions that are not used for forming the respective light distribution patterns P _SPOT , P _MID , and P _WIDE .

As shown in FIG. 67 (b), the lens body 12M of this modification example has each light distribution pattern P _SPOT.
, P _MID , P _WIDE are not used for forming the extended regions 44aa and / or 44bb with a plurality of quadrangular pyramid-shaped lens cuts LC (for example, a projection angle of 30 °, a pitch of 5 mm, and a mountain height of 3 mm) Equivalent to. Otherwise, the configuration is the same as the lens body 12K of the eleventh embodiment. In addition, each lens cut LC may be the same size and the same shape,
Different sizes and different shapes may be used. Moreover, it may be arrange | positioned and may be arrange | positioned at random.

According to this modification, in addition to the effects of the eleventh embodiment, the following effects can be further achieved.

That is, when the light source 14 is not turned on, the lens body 12M that looks as if the inside of the lens body is emitting light when viewed from multiple directions, and the vehicular lamp 10M including the lens body 12M. Can be provided. As a result, the visibility when the light source 14 is not turned on (the vehicular lamp 10M, and thus the visibility of the vehicle on which the light is mounted) can be improved.

This is because the outside light (for example, sunlight) incident on the inside of the lens body 12M from the exit surface 12Kb is inside the lens body 12M (a plurality of quadrangular pyramid-shaped lens cuts LC or the like applied to the extension regions 44aa and 44bb). The inner surface is reflected (totally reflected) in various directions and is again emitted from the exit surface 12.
This is due to emission from Kb in various directions.

Note that the extension regions 44aa and 44bb are not limited to the surface including the plurality of quadrangular pyramid-shaped lens cuts LC, but enter the lens body 12M from the exit surface 12Kb and enter the extension regions 44aa and 4bb.
The external light reaching 4bb may be configured as a surface that is internally reflected (totally reflected) in various directions and then exits again from the exit surface 12Kb. For example, the extension regions 44aa and 44bb may be configured as surfaces including a plurality of lens cuts having a polygonal pyramid shape other than the quadrangular pyramid shape,
You may be comprised as a surface including the embossed surface or cut surface containing several other micro unevenness | corrugations.

FIG. 68A shows a plurality of lens bodies 1 as a first modification of the lens body 12K of the eleventh embodiment.
It is a perspective view of the lens coupling body 16L which connected 2L.

As shown in FIG. 68 (a), the lens combination 16L includes a plurality of lens bodies 12L. The lens coupling body 16L (the plurality of lens bodies 12L) is integrally molded (injection molding) by injecting a transparent resin such as polycarbonate or acrylic into a mold, and cooling and solidifying. The exit surfaces 12Kb of each of the plurality of lens bodies 12L are arranged in a line in the horizontal direction in a state of being adjacent to each other, and form a group of appearance exit surfaces having a sense of unity extending in a line shape in the horizontal direction.

By using the lens combination body 16L having the above-described configuration, it is possible to configure a vehicular lamp that has a sense of unity and extends in a line shape in the horizontal direction. The lens combination 16L may be formed by molding a plurality of lens bodies 12L in a physically separated state and connecting (holding) them with a holding member (not shown) such as a lens holder.

In addition, as shown in FIG.68 (b), you may carry out the addition 16La in the clearance gap between each lens body 12L. For example, the lower surface 44d may be extended to close the gap between the lens bodies 12L, or an additional lens portion (as the lower surface 44d and the lower surface 44d may be physically formed as a separate member in the gap between the lens bodies 12L. An additional lens portion including a similar lower surface may be disposed. In this way, the outside light incident from here is also the lower surface 44d (that is, inside the lens body 12L).
As a result of being internally reflected (totally reflected) in various directions by the action of the plurality of lens cuts LC and exiting again from the exit surface 12Kb, the above "shininess" can be further enhanced.

Next, a vehicle lamp 10N (lens body 12N) according to a twelfth embodiment will be described with reference to the drawings.

  The vehicular lamp 10N (lens body 12N) of the present embodiment is configured as follows.

69 is a perspective view of the vehicular lamp 10N (lens body 12N), FIG. 70 (a) is a top view, and FIG.
0 (b) is a front view, and FIG. 70 (c) is a side view. FIG. 71A shows an example of a low beam light distribution pattern P _LO (synthetic light distribution pattern) formed by the vehicular lamp 10N (lens body 12N), and each part shown in FIGS. 71B to 71E. Distribution light pattern P _SPOT , P _{MID_L} , P _{MID_R}
, P _WIDE is superimposed.

The vehicular lamp 10N (lens body 12N) of the present embodiment is a pair of left and right second lower reflecting surfaces 48a and 48b with respect to the vehicular lamp 10J (lens body 12J) of the tenth embodiment shown in FIG.
(And shades 48c and 48d). Unlike the tenth embodiment, the final emission surface (second emission surface 12A2b) of the lens body 12N of the present embodiment is a semi-cylindrical surface (cylindrical surface) with a slant angle and / or a camber angle. It is configured. Furthermore, unlike the tenth embodiment, the upper surface 44Nc of the present embodiment functions as an exit surface from which light from the light source 14 that has entered the lens body 12N from the upper entrance surface 42c exits. Other than that, it is the structure similar to the vehicle lamp 10J (lens body 12J) of 10th Embodiment.

When this inventor confirmed by simulation, vehicle lamp 10J of 10th Embodiment (
In the lens body 12J), when the relative positional relationship of the lens body 12J with respect to the light source 14 deviates from the design value, glare occurs in the mid light distribution pattern P _MID as shown in FIG. 77 (a). There was found. In FIG. 77 (a), the light source 14 (light emitting surface) is 1 mm square, and the light source 1
4 from the design value in the Y direction (vertical direction) +0.
It shows the glare that occurs when the deviation is 2 mm.

When the relative positional relationship of the lens body 12J with respect to the light source 14 is as designed, FIG.
As shown in FIG. 7B, no glare occurs in the mid light distribution pattern P _MID .

However, when actually manufacturing a vehicular lamp, it is difficult to make the relative positional relationship of the lens body 12J with respect to the light source 14 as designed due to the effects of assembly errors and the like, and the relative position of the lens body 12J with respect to the light source 14 is difficult. The positional relationship deviates from the design value.

In order to suppress the occurrence of glare in the mid light distribution pattern P _MID due to the relative positional relationship of the lens body 12J with respect to the light source 14 deviating from the design value as described above, as a result of intensive studies, apart from the first lower reflection surface 12b which forms a first optical system for forming a light distribution pattern P _sPOT spot (and shade 12c), mid light distribution pattern P _MI
By adding a pair of left and right second lower reflecting surfaces 48a and 48b (and shades 48c and 48d) to the second optical system forming _D , the light causing the glare is distributed below the cutoff line. Thus, it has been found that glare can be suppressed from occurring in the mid light distribution pattern P _MID .

Based on this knowledge, the vehicular lamp 10N (lens body 12N) of the present embodiment has a pair of left and right second lower reflecting surfaces disposed on the left and right sides separately from the first lower reflecting surface 12b (and the shade 12c). 48a and 48b (and shades 48c and 48d).

Hereinafter, differences from the vehicular lamp 10J (lens body 12J) of the tenth embodiment will be mainly described, and the same reference numerals are given to the same configurations as the vehicular lamp 10J (lens body 12J) of the tenth embodiment. A description thereof will be omitted.

The lens body 12N of the present embodiment is similar to the tenth embodiment in that the spot light distribution pattern P _{SP is used.
In addition} to the first optical system (see FIG. 49 (a)) that forms _OT (see FIG. 71 (b)),
A second optical system (see FIGS. 73 and 74) for forming mid light distribution patterns P _{MID_L} and P _{MID_R} (see FIGS. 71 (c) and 71 (d)) diffused from the spot light distribution pattern P _SPOT ; as well as,
A third optical system (see FIG. 76) for forming a wide light distribution pattern P _WIDE (see FIG. 71 (e)) diffused from the mid light distribution pattern P _MID is provided.

The lens body 12N of the present embodiment is a lens body disposed in front of the light source 14, and is shown in FIG.
9. As shown in FIG. 70, the light source includes a rear end portion, a front end portion, a pair of left and right side surfaces 44a and 44b and an upper surface 44Nc disposed between the rear end portion and the front end portion, and is incident on the inside of the lens body 12N. 14
Light emitted from the front end (second emission surface 12A2b) and the upper surface 44Nc and irradiated forward, the light distribution for low beam including a cut-off line at the upper edge as shown in FIG. 71 (a) It is configured as a lens body that forms the pattern P _Lo .

Specifically, the lens body 12N includes a first rear end portion 12A1aa, a first front end portion 12A1bb,
A pair of left and right side surfaces 4 disposed between the first rear end portion 12A1aa and the first front end portion 12A1bb.
4a, 44b, a first lens portion 12A1 including a first lower reflection surface 12b disposed between the first rear end portion 12A1aa and the first front end portion 12A1bb, and a front portion of the first lens portion 12A1. The second lens portion 12A including the second rear end portion 12A2aa and the second front end portion 12A2bb.
2 and a connecting portion 12A3 connecting the first lens portion 12A1 and the second lens portion 12A2, and further, a first rear end portion 12A1aa of the first lens portion 12A1 and a second front end portion 12A2bb of the second lens portion 12A2. 44Nc disposed between the first lens portion 12A1a and the first lens portion 12A1a.
a between the first rear end 12A1aa and the first front end 12A1bb of the first lower reflection surface 12
It is configured as a lens body including a pair of left and right second lower reflecting surfaces 48a and 48b disposed on the left and right sides of b.

The lens body 12N of the present embodiment is integrally molded by injecting a transparent resin such as polycarbonate and acrylic, cooling, and solidifying (by injection molding) as in the above embodiments.

FIG. 72A is a front view of the first rear end portion 12A1aa of the first lens portion 12A1, and FIG.
) Is a cross-sectional view (schematic diagram) along BB in FIG. In addition, the AA sectional view (schematic diagram) in FIG. 72 (a) is the same as FIG. 50 (b).

As shown in FIGS. 50 and 72 (a), the first rear end portion 12A1aa of the first lens portion 12A1.
The first incident surface 12a and the left and right sides of the first incident surface 12a surround the space between the light source 14 and the first incident surface 12a disposed in the vicinity of the first incident surface 12a from both the left and right sides. It includes a pair of left and right entrance surfaces 42a and 42b. The first rear end 12A1aa is as shown in FIG.
As shown in FIG. 2 (a) and FIG. 72 (b), the upper incident is further arranged on the upper side of the first incident surface 12a so as to surround the space between the light source 14 and the first incident surface 12a from the upper side. A surface 42c is included.

  The front end portion of the first lower reflecting surface 12b includes a shade 12c.

As shown in FIG. 69, the first front end portion 12A1bb of the first lens portion 12A1 has a semi-cylindrical first emission surface 12A1a (in the first semi-cylindrical surface of the present invention) extending in the vertical direction or the substantially vertical direction. Equivalent), and a pair of left and right emission surfaces 46a disposed on the left and right sides of the first emission surface 12A1a,
46b (corresponding to the pair of left and right intermediate exit surfaces of the present invention).

The second rear end portion 12A2aa of the second lens portion 12A2 includes a second incident surface 12A2a (corresponding to the intermediate incident surface of the present invention), and the second front end portion 12A2bb of the second lens portion 12A2 is second.
The exit surface 12A2b (corresponding to the final exit surface of the present invention) is included.

Unlike the tenth embodiment, the final emission surface (second emission surface 12A2b) has a slant angle and / or
Alternatively, it is configured as a semi-cylindrical surface with a camber angle. Accordingly, the cylindrical axis (and the focal line F _12A2b ) of the final emission surface (second emission surface _12A2b ) is inclined with respect to the horizontal. The slant angle and / or camber angle is given by the method described in the fifth to seventh embodiments. And the said blur and rotation which generate | occur | produce with provision of a slant angle and / or a camber angle are improved and suppressed by the method demonstrated in 5th-7th embodiment.

Of course, the present invention is not limited to this, and the final exit surface (second exit surface 12A2b) has a slant angle and / or
Alternatively, the camber angle may not be given, that is, the cylindrical axis (and the focal line F _12A2b ) may be configured as a semi-cylindrical surface extending in the horizontal direction.

The connecting part 12A3 includes the first lens part 12A1 and the second lens part 12A2 at the upper part thereof, the first front end part 12A1bb of the first lens part 12A1, the second rear end part 12A2aa of the second lens part 12A2, and the connecting part. The space S surrounded by the portion 12A3 is connected in a formed state.

As shown in FIG. 49A, the first incident surface 12a, the first lower reflecting surface 12b (and the shade 1).
2c), a first semi-cylindrical surface (first exit surface 12A1a), an intermediate entrance surface (second entrance surface 12A)
2a) and the final exit surface (second exit surface 12A2b) are connected to the lens body 12 from the first entrance surface 12a.
Of the light from the light source 14 incident on the inside of N, the light partially blocked by the shade 12c of the first lower reflecting surface 12b and the light internally reflected by the first lower reflecting surface 12b are in the first semi-cylindrical shape. surface(
The light exits from the first exit surface 12A1a) to the outside of the lens body 12N, and further enters the lens body 12N from the intermediate entrance surface (second entrance surface 12A2a) to enter the final exit surface (second exit surface 12A2b).
) And irradiated forward, the shade 1 of the first lower reflecting surface 12b is formed at the upper edge.
The first optical system for forming the spot light distribution pattern P _SPOT (corresponding to the light collection pattern of the present invention) including the cut-off line defined by 2c is configured.

With the first optical system configured as described above, the spot light distribution pattern P _SPOT shown in FIG. _71B is formed on the virtual vertical screen.

FIG. 73 is a transverse sectional view (only the main optical surface) of the second optical system, and FIG. 74 is a longitudinal sectional view (only the main optical surface).

As shown in FIGS. 73 and 74, a pair of left and right entrance surfaces 42a and 42b and a pair of left and right side surfaces 44 are provided.
a, 44b, a pair of left and right second lower reflecting surfaces 48a, 48b (and shades 48c, 48d),
A pair of left and right intermediate exit surfaces (a pair of left and right exit surfaces 46a and 46b), an intermediate entrance surface (second entrance surface 1)
2A2a) and the final exit surface (second exit surface 12A2b) are a pair of left and right entrance surfaces 42a, 42.
The shades 48c and 48d of the pair of left and right second lower reflecting surfaces 48a and 48b out of the light from the light source 14 that enters the lens body 12N from b and is internally reflected by the pair of left and right side surfaces 44a and 44b.
The light partially shielded by the light and the light internally reflected by the pair of left and right second lower reflection surfaces 48a and 48b are emitted to the outside of the lens body 12N from the pair of left and right intermediate emission surfaces (the pair of left and right emission surfaces 46a and 46b). Furthermore, by entering the inside of the lens body 12N from the intermediate incident surface (second incident surface 12A2a), exiting from the final exit surface (second exit surface 12A2b), and being irradiated forward,
As shown in FIGS. _71C and _71D , the mid light distribution patterns P _{MID_L} and P _{MID_R} (spread from the spot light distribution pattern P _SPOT superimposed on the spot light distribution pattern P _SPOT (
A pair of left and right second optical systems forming the first diffusion pattern of the present invention is configured.

The pair of left and right second lower reflecting surfaces 48a and 48b are planar reflecting surfaces extending forward from the lower end edges (or in the vicinity of the lower end edges) of the pair of left and right incident surfaces 42a and 42b. FIG. 75 is an enlarged perspective view of the vicinity of the second lower reflecting surface 48a (and the shade 48c) disposed on the left side. The front ends of the pair of left and right second lower reflecting surfaces 48a and 48b include shades 48c and 48d.

The pair of left and right second lower reflection surfaces 48a and 48b are reflection surfaces that totally reflect the light incident on the pair of left and right second lower reflection surfaces 48a and 48b out of the light from the light source 14 that has entered the lens body 12N. Metal deposition is not used. Of the light from the light source 14 that has entered the lens body 12N, the light that has entered the pair of left and right second lower reflecting surfaces 48a and 48b is the pair of left and right second lower reflecting surfaces 4.
Internally reflected by 8a and 48b and directed toward the final emission surface (second emission surface 12A2b), refracted at the final emission surface (second emission surface 12A2b) and directed toward the road surface. That is, the reflected light internally reflected by the pair of left and right second lower reflecting surfaces 48a and 48b is folded back at the cutoff line and superimposed on the light distribution pattern below the cutoff line. As a result, a cut-off line is formed at the upper edge of the mid light distribution patterns P _{MID_L} and P _{MID_R} (see FIGS. 71 (c) and 71 (d)).

The positions of the shades 48c and 48d at which the cut-off _lines of the mid light distribution patterns P _{MID_L} and P _{MID_R} are appropriately formed vary depending on conditions such as the slant angle and / or the camber angle. Have difficulty.

However, for example, using a predetermined simulation software, the final emission surface (
Shades 48c and 48d with respect to the focal line F _12A2b (see FIG. 73) of the second emission surface 12A2b)
The shade 48c in which the cut-off _lines of the mid light distribution patterns P _{MID_L} and P _{MID_R} are appropriately formed by checking the mid light distribution patterns P _{MID_L} and P _{MID_R} every time the position is changed. A position 48d can be found.

The pair of left and right entrance surfaces 42a and 42b is refracted by light (mainly light Ray _MID spreading in the left and right direction, see FIG. _50B ) that does not enter the first entrance surface 12a among the light from the light source 14. As shown in FIG. 50 (b), the surface incident on the inside of one lens portion 12 </ b> A <b> 1 is configured as a curved surface (for example, a free curved surface) convex toward the light source 14.

Specifically, the pair of left and right entrance surfaces 42a and 42b is mainly composed of the pair of left and right entrance surfaces 42a.
42b, the light from the light source 14 incident on the inside of the lens body 12N and internally reflected by the pair of left and right side surfaces 44a and 44b is shaded 48c and 48d of the pair of left and right second lower reflecting surfaces 48a and 48b in the vertical direction. Condensed in the vicinity (see FIG. 74) and diffused in the horizontal direction (
As shown in FIG. 73, the surface shape is configured.

For example, in FIG. 73, the left incident surface 42a has a second left lower reflection with respect to the vertical direction when light from the light source 14 incident on the lens body 12N from the left incident surface 42a and internally reflected by the left surface 44a. The surface shape is configured such that the light is condensed near the shade 48c of the surface 48a (see FIG. 74) and diffused without condensing in the horizontal direction (see FIG. 73).

On the other hand, in FIG. 73, the right incident surface 42b reflects light from the light source 14 that has entered the lens body 12N from the right incident surface 42b and is internally reflected by the right side surface 44b with respect to the vertical direction. The light is condensed near the shade 48d of the surface 48b (see FIG. 74) and is condensed near the final light exit surface (second light exit surface 12A2b) in the horizontal direction, and then diffused (see FIG. 73). The surface shape is configured.

71 (c) and 71 (d) on the virtual vertical screen by the second optical system having the above configuration.
The mid light distribution patterns P _{MID_L} and P _{MID_R} shown in FIG.

As described above, the inventor has a pair of left and right second lower reflecting surfaces 48a and 48b (and a shade 48).
c, 48d), even if the relative positional relationship of the lens body 12N with respect to the light source 14 is deviated from the design value in any direction, the mid light distribution pattern P _MID (P _{MID_L} , P _MI
It was confirmed by simulation that glare can be suppressed in _{D_R} ).

Incidentally, the light distribution pattern P _{MID_R} for mid shown in mid-light distribution pattern P _{MID_L} and Figure 71 (d) shown in FIG. 71 (c) is not symmetrical to each other, the final output surface (second exit surface 12A
This is because 2b) is configured as a semi-cylindrical surface with a slant angle and / or a camber angle. The final emission surface (second emission surface 12A2b) is configured as a semi-cylindrical surface with no slant angle and / or camber angle, that is, the cylinder axis (and the focal line F _12A2b ) extending in the horizontal direction. In this case, the mid light distribution pattern P _{MID_L} and the mid light distribution pattern P _{MID_R} are symmetrical to each other.

  FIG. 76 is a side view of the third optical system (only the main optical surface).

As shown in FIG. 76, the upper incident surface 42c and the upper surface 44Nc are formed by the light from the light source 14 that has entered the lens body 12N from the upper incident surface 42c emitted from the upper surface 44Nc and irradiated forward. As shown in 71 (e), the light distribution pattern for wide that is diffused from the light distribution patterns for the mid _{PMID_L} and P _{MID_R} and superimposed on the light distribution pattern for the spot P _SPOT and the light distribution patterns for the mid _{PMID_L} and P _{MID_R} A third optical system for forming P _WIDE (corresponding to the second diffusion pattern of the present invention) is configured.

The wide light distribution pattern P _WIDE is a light distribution pattern having a shape including a recess recessed downward in the vicinity of the center of the upper edge. The reason is as follows.

When the inventor confirmed by simulation, when the relative positional relationship of the lens body 12N with respect to the light source 14 deviates from the design value (for example, when the lens body 12N deviates vertically from the light source 14), FIG. As indicated by a dotted line in 78, the wide light distribution pattern P _WIDE moves vertically upward as a whole. As a result, glare occurs in the area near the intersection of the H line and the V line (the area where the preceding vehicle and the oncoming vehicle exist). It was found to occur. 78 shows the lens body 12 with respect to the light source 14. FIG.
This indicates that glare occurs when the relative positional relationship of N deviates from the design value in the Y direction (vertical direction).

When the relative positional relationship of the lens body 12N with respect to the light source 14 is as designed, FIG.
As shown in 1 (e), since the wide light distribution pattern P _WIDE is formed at an appropriate position, no glare occurs.

However, when a vehicle lamp (lens body) is actually manufactured, it is difficult to make the relative positional relationship of the lens body 12N with respect to the light source 14 as designed due to the influence of assembly errors and the like. The relative positional relationship of 12N deviates from the design value.

As described above, the present inventor has caused the relative positional relationship of the lens body 12N with respect to the light source 14 to deviate from the design value, and the wide light distribution pattern P _WIDE moves vertically upward as a whole. As a result of intensive studies to suppress the occurrence of glare in the area near the intersection of the H line and the V line (area where the preceding vehicle and the oncoming vehicle exist), the wide light distribution pattern P _WIDE By forming a light distribution pattern having a concave portion that is recessed downward in the vicinity, even if the wide light distribution pattern P _WIDE moves vertically upward as a whole, the region in the vicinity of the intersection of the H line and the V line (
It has been found that glare can be suppressed from occurring in a region where there is a preceding vehicle or an oncoming vehicle.

Based on this knowledge, the wide light distribution pattern P _WIDE is a light distribution pattern having a shape including a concave portion in which the vicinity of the center of the upper edge is recessed downward.

The wide light distribution pattern P _WIDE having a concave portion in which the vicinity of the center of the upper edge is recessed downward can be formed as follows.

The upper incident surface 42c is light that is not incident on the first incident surface 12a among the light from the light source 14 (mainly,
Light Ray _Wide spreading upward. 72 (b)) is a surface that is refracted and is incident on the inside of the first lens portion 12A1, and as shown in FIG. 72 (b), a curved surface that is convex toward the light source 14 (for example, a free-form surface). It is configured as.

Unlike the tenth embodiment, the upper surface 44Nc extends from the front end (second front end 12A2bb) side to the rear end (first rear end 12A1aa) side of the lens body 12N, as shown in FIGS. The lens body 12 is disposed in a posture inclined obliquely upward toward the upper entrance surface 42c.
It functions as an exit surface from which light from the light source 14 incident on the N exits. The upper surface 44Nc is
It is configured as a planar surface. Of course, the present invention is not limited to this, and the upper surface 44c may be configured as a curved surface.

As shown in FIG. 71 (e), the upper incident surface 42 c and / or the upper surface 44 Nc is formed with a wide light distribution pattern P _WIDE having a shape including a recess recessed downward in the vicinity of the center of the upper edge.
The surface shape is configured.

The wide light distribution pattern P _WIDE shown in FIG. 71 (e) is formed on the virtual vertical screen by the third optical system having the above configuration.

According to the present embodiment, in addition to the effects of the tenth embodiment, the following effects can be further achieved.

That is, it is possible to achieve a unity appearance that extends in a line in a predetermined direction, and 1
Multiple light distribution patterns (spot light distribution pattern P _SPOT , mid light distribution pattern P _{MID_
L} , P _{MID_R,} etc.) can be provided. In addition,
In order to exhibit this effect, it is sufficient that the first optical system and the second optical system are provided at the minimum, and the third optical system can be omitted as appropriate.

It is possible to realize a unity appearance that extends in a line shape in a predetermined direction.
This is because the emission surface 12A2b) is configured as a semi-cylindrical surface (a semi-cylindrical refractive surface).

One light distribution pattern (spot light distribution pattern P _SPOT , mid light distribution pattern P
_{MID_L} , P _{MID_R,} etc.) can be formed because one lens body 12N is a plurality of optical systems, that is, a first optical system that forms a spot light distribution pattern P _SPOT , and a mid light distribution pattern P _{MID_L} , P _{MID_R} is provided with a second optical system and the like.

Further, according to the present embodiment, even if the relative positional relationship of the lens body 12N with respect to the light source 14 is deviated from the design value due to the influence of an assembly error or the like, the mid light distribution pattern P _MID (
The occurrence of glare in P _{MID_L} and P _{MID_R} ) can be suppressed. This is because the second optical system for forming the mid light distribution pattern P _MID (P _{MID_L} , P _{MID_R} ) _includes a pair of left and right second lower reflecting surfaces 48a and 48b (and shades 48c and 48d). It is.

Further, according to the present embodiment, even if the relative positional relationship of the lens body 12N with respect to the light source 14 deviates from the design value due to the influence of the assembly error or the like, the wide light distribution pattern P _WIDE moves vertically upward. The occurrence of glare can be suppressed. This is because the wide light distribution pattern P _WIDE is formed as a light distribution pattern having a shape including a concave portion in which the center of the upper end edge is recessed downward. In order to achieve this effect, at least the third optical system may be provided, and the first optical system and / or the second optical system can be omitted as appropriate.

Next, a modified example of the lens body 12N will be described. In this modification, the upper surface 44c of the tenth embodiment is used instead of the upper surface 44Nc, and the second emission surface 12A2b of the tenth embodiment is used.
This corresponds to the lens body 12N to which (extended region 12A2b4) is added.

In this modification, as shown in FIG. 49 (c), the upper incident surface 42c, the upper surface 44c, and the second emission surface 12A2b (extension region 12A2b4) enter the lens body 12N from the upper incident surface 42c and enter the upper surface 44c. The light Ray _WIDE from the light source 14 reflected on the inner surface at the second emission surface 12A2
b (extension region 12A2b4) is emitted from the front and irradiated forward, thereby, as shown in FIG. 71 (e), spot light distribution pattern P _SPOT and mid light distribution patterns P _{MID_L} , P _{MID_R}
The third optical system forms a wide light distribution pattern P _WIDE that is diffused by the mid light distribution patterns P _{MID_L} and P _{MID_R} .

The surface shape of the upper incident surface 42c and / or the upper surface 44c is configured such that a wide light distribution pattern P _WIDE having a concave portion in which the vicinity of the center of the upper end edge is recessed downward is formed.
For example, the region near the center in the left-right direction is made to be lower than the regions on the left and right sides so that the reflected light from the region near the center in the left-right direction of the upper surface 44c is irradiated downward. Tilt down (or dent). As a result, as shown in FIG. 71 (e), it is possible to form a wide light distribution pattern P _WIDE having a shape including a concave portion in which the center of the upper edge is recessed downward.

  Also according to this modification, the same effects as in the twelfth embodiment can be obtained.

Next, as a thirteenth embodiment, a vehicular lamp 60 that forms a high beam light distribution pattern (
The lens body 62) will be described with reference to the drawings.

79A is a longitudinal sectional view of the vehicular lamp 60 (lens body 62), and FIG. 79B is a front view. FIG. 80A shows an example of a high beam light distribution pattern P _Hi (combined light distribution pattern) formed by the vehicular lamp 60 (lens body 62), and is shown in FIGS. 80B and 80C. Each _partial light distribution pattern P _{Hi_SPOT} , P _{Hi_WIDE} is formed by being superimposed. The spot light distribution pattern P _{Hi_SPOT} corresponds to the light collection pattern of the present invention, and the wide light distribution pattern P _{Hi_WIDE} corresponds to the diffusion pattern of the present invention.

As shown in FIG. 79, the vehicular lamp 60 of this embodiment includes a light source 14, a lens body 62 disposed in front of the light source 14, and the like, and a virtual vertical screen (about 25 m from the front of the vehicle) facing the front of the vehicle. On the upper side), a high beam light distribution pattern P shown in FIG.
Form _Hi .

Light source 14 is disposed at the rear end portion 62a near the lens body 62 in a posture with its the emission surface to the front (the reference point F ₆₂ near the optical design). Optical axis AX ₁₄ of the light source 14 may be coincident with the reference axis AX ₆₂ extending in the longitudinal direction of the vehicle, it may be inclined with respect to the reference axis AX _62.

The lens body 62 is a lens body disposed in front of the light source 14, and includes a rear end portion 62a and a front end portion 62b. Light from the light source 14 incident on the inside of the lens body 62 is transmitted to the front end portion 62b (for wide use). The light distribution pattern exit surface 62b1 and the spot light distribution pattern exit surface 62b2)
It is configured as a lens body that forms a high beam light distribution pattern P _Hi shown in FIG. The lens body 62 is integrally formed by injecting a transparent resin such as polycarbonate or acrylic, cooling, and solidifying (by injection molding).

Lens body 62, a first optical system for forming a spot light distribution pattern P _{Hi_SPOT} than diffuse wide light distribution pattern P _{Hi_WIDE} (see FIG. 80 (b)), and the spot light distribution pattern P _{Hi_SPOT} (Figure 80 (C) is provided.

The rear end portion 62a of the lens body 62 reflects the light from the light source 14 that has entered the lens body 62 from the incident surface A for the wide light distribution pattern and the incident surface A for the wide light distribution pattern. The light distribution pattern 62a3 for the wide light distribution pattern, the incident surface 62a5 for the spot light distribution pattern, and the light from the light source 14 that has entered the lens body 62 from the incident surface 62a5 for the spot light distribution pattern. It includes a reflecting surface 62a6 for a spot light distribution pattern that is internally reflected.

As shown in FIG. 79A, the incident surface A for the wide light distribution pattern extends backward from the outer peripheral edge of the first incident surface 62a1 and the first incident surface 62a1 that are convex toward the light source 14. A cylindrical second incident surface 62a2 is included that surrounds a range other than the notch 62a4 through which light from the light source 14 passes in the space between the light source 14 and the first incident surface 62a1.

The reflection surface 62a3 for the wide light distribution pattern is disposed outside the second incident surface 62a2.
It is a reflecting surface that internally reflects (totally reflects) light from the light source 14 that has entered the lens body 62 from the second incident surface 62a2.

FIG. 81A shows the rear end portion 62a of the lens body 62 (first incident surface 62a1, second incident surface 62).
It is a front view of a2 and the reflection surface 62a3 vicinity for wide light distribution patterns.

Of the space between the light source 14 and the first incident surface 62a1, the range of the angle θ1 shown in FIG. 81A is surrounded by the second incident surface 62a2 (and the reflection surface 62a3 for the wide light distribution pattern). However, the range of the angle θ2 is not surrounded by the second incident surface 62a2 (and the reflection surface 62a3 for the wide light distribution pattern), and the fan-shaped notch 62a through which the light from the light source 14 passes.
4 is configured.

Incidentally, as shown in FIG. 82, the range of angle θ2 is, the reference axis AX ₆₂ dimension is not surrounded by the relatively short second light incident surface 62a2 (and the reflecting surfaces 62a3 of the light distribution pattern for wide) Also good.

As shown in FIG. 79A, the incident surface 62a5 for the spot light distribution pattern has a concave incident toward the light source 14 where the light from the light source 14 that has passed through the notch 62a4 enters the lens body 62. Surface.

The reflecting surface 62a6 for the spot light distribution pattern is the incident surface 6 for the spot light distribution pattern.
2a5, the lens body 62 from the incident surface 62a5 for the spot light distribution pattern
This is a reflecting surface that internally reflects (totally reflects) light from the light source 14 incident on the inside.

The front end portion 62b of the lens body 62 includes an exit surface 62b1 for a wide light distribution pattern and an exit surface 62b2 for a spot light distribution pattern disposed below the front surface 62b1.

The first optical system that forms the wide light distribution pattern P _{Hi_WIDE} (see FIG. _80B ) is configured as follows.

As shown in FIG. 79A, the incident surface A (first incident surface 62a1) for the wide light distribution pattern.
And the second incident surface 62a2), the reflecting surface 62a3 for the wide light distribution pattern, and the exit surface 62b1 for the wide light distribution pattern are the incident surface A (first incident surface 6) for the wide light distribution pattern.
2a1 and the second incident surface 62a2), the light from the light source 14 incident on the lens body 62 is
A first optical system is formed that emits from the exit surface 62b1 for the wide light distribution pattern and is irradiated forward to form the wide light distribution pattern P _{Hi_WIDE} .

Specifically, the first incident surface 62a1, the second incident surface 62a2, the reflective surface 62a3 for the wide light distribution pattern, and the output surface 62b1 for the wide light distribution pattern are arranged from the first incident surface 62a to the lens body. The light from the light source 14 incident on the inside of the light source 62 and the light source 14 incident on the inside of the lens body 62 from the second incident surface 62a and internally reflected (totally reflected) by the reflecting surface 62a3 for the wide light distribution pattern. Light is emitted from the exit surface 62b1 for the wide light distribution pattern, and is irradiated forward to form the first optical system that forms the wide light distribution pattern P _{Hi_WIDE} .

The exit surface 62b1 for the wide light distribution pattern is configured as a semi-cylindrical surface (cylindrical surface) in which the cylinder axis extends in the horizontal direction (a direction orthogonal to the middle paper surface in FIG. 79A). The focal line of the exit surface 62b1 for the wide light distribution pattern extends in the horizontal direction (the direction perpendicular to the paper surface in FIG. 79 (a)) at the position indicated by reference numeral _F62b1 in FIG. 79 (a). Of course, the present invention is not limited to this, and the exit surface 62b1 for the wide light distribution pattern may be configured as a semi-cylindrical surface (cylindrical surface) with a slant angle and / or a camber angle.

The first incident surface 62a1 is a surface on which light from the light source 14 is refracted and is incident on the inside of the lens body 62, and is configured as a curved surface (for example, a free curved surface) convex toward the light source 14. Specifically, the first incident surface 62a1 is configured such that the light from the light source 14 that has entered the lens body 62 from the first incident surface 62a1 is focused on the exit surface 62b1 for the wide light distribution pattern in the vertical direction. _{Condensed in the} vicinity of F _62b1 (see FIG. _79A ) and diffused in the horizontal direction (FIG. 8).
3 (a)) (or collimated), the surface shape is configured.

The second incident surface 62a2 is a surface in which light that does not enter the first incident surface 62a1 out of the light from the light source 14 is refracted and enters the lens body 62. The second incident surface 62a2 is directed rearward from the outer peripheral edge of the first incident surface 62a1. It is configured as a cylindrical surface (for example, a free-form surface) that extends and surrounds a range other than the cutout portion 62a4 through which light from the light source 14 passes in the space between the light source 14 and the first incident surface 62a1. Yes.

The reflection surface 62a3 for the wide light distribution pattern is disposed outside the second incident surface 62a2.
It is configured as a surface that internally reflects (totally reflects) the light from the light source 14 that has entered the lens body 62 from the second incident surface 62a2. The reflection surface 62a3 for the wide light distribution pattern is a reflection surface that internally reflects (totally reflects) the light from the light source 14 that has entered the lens body 62 from the second incident surface 62a2, and does not use metal deposition. Specifically, the reflecting surface 6 for the wide light distribution pattern.
The light 2a3 is incident on the inside of the lens body 62 from the second incident surface 62a2 and is internally reflected (totally reflected) by the reflecting surface 62a3 for the wide light distribution pattern. _{Condensed in the} vicinity of the focal line F _{62b1 of the} light distribution pattern exit surface 62b1 (see FIG. 79 (a)) and diffused in the horizontal direction (see FIG. 83 (a)) (or collimated). As shown in FIG.

With the first optical system configured as described above, a wide light distribution pattern P _{Hi_WIDE} shown in FIG. _80B is formed on the virtual vertical screen.

That is, the light from the light source 14 that has entered the lens body 62 from the first incident surface 62a1 and the inner surface reflected by the reflecting surface 62a3 for the wide light distribution pattern that has entered the lens body 62 from the second incident surface 62a2. The light from the light source 14 (totally reflected) is condensed (see FIG. _{79A) in the} vicinity of the focal line F _62b1 of the emission surface 62b1 for the wide light distribution pattern in the vertical direction.
The light exits from the exit surface 62b1 for the wide light distribution pattern. At that time, the light from the light source 14 emitted from the emitting surface 62b1 of the light distribution pattern for wide by the action of the exit surface 62b1 of the light distribution pattern for wide is condensed relates vertically, the reference axis AX ₆₂ A wide light distribution pattern P _{Hi_WIDE} shown in FIG. _80B is formed by irradiating forward as light diffused in the horizontal direction and parallel to the horizontal direction.

The second optical system for forming the spot light distribution pattern P _{Hi_SPOT} (see FIG. 80C) is configured as follows.

As shown in FIG. 79 (a), the incident surface 62a5 for the spot light distribution pattern, the reflection surface 62a6 for the spot light distribution pattern, and the exit surface 62b2 for the spot light distribution pattern include the spot light distribution. Light from the light source 14 that has entered the lens body 62 from the pattern incident surface 62a5 and is internally reflected by the reflecting surface 62a6 for the spot light distribution pattern is emitted from the output surface 62b2 for the spot light distribution pattern. Light distribution pattern P for spot irradiated forward
The second optical system forming _{Hi_SPOT} is configured.

Specifically, the incident surface 62a5 for the spot light distribution pattern, the reflection surface 62a6 for the spot light distribution pattern, and the exit surface 62b2 for the spot light distribution pattern are formed by the notch 6.
The light source 14 passes through 2a4, enters the inside of the lens body 62 from the incident surface 62a5 for the spot light distribution pattern, and is internally reflected (totally reflected) by the reflection surface 62a6 for the spot light distribution pattern.
Is emitted from the exit surface 62b2 for the spot light distribution pattern and is irradiated forward to form a second optical system that forms the spot light distribution pattern P _{Hi_SPOT} .

Exit surface 62b2 of the light distribution pattern for spot is configured as a surface of a planar shape perpendicular to the reference axis AX _62. Of course, not limited to this, the exit surface 6 for the spot light distribution pattern
2b2 may be configured as a curved surface. Further, as shown in FIG. 84, the spot light distribution pattern exit surface 62b2 may be configured as a planar or curved surface that is continuous with the lower end edge of the wide light distribution pattern exit surface 62b1. Good.

The exit surface 62b2 for the spot light distribution pattern is the exit surface 62 for the wide light distribution pattern.
It arrange | positions in the position back from b1 (refer Fig.79 (a)). Of course, not limited to this,
The exit surface 62b2 for the spot light distribution pattern is the exit surface 62b for the wide light distribution pattern.
It may be arranged at a position ahead of 1 or at the same position as the exit surface 62b1 for the wide light distribution pattern.

The spot light distribution pattern incident surface 62 a 5 is a surface on which light from the light source 14 enters the lens body 62, and is configured as a concave curved surface toward the light source 14. Specifically, the incident surface 62a5 of the light distribution pattern for a spot comprises a light source 14 (to be exact, the reference point F ₆₂₎
It is comprised as a spherical-shaped surface centering on. Thereby, the Fresnel reflection loss when the light from the light source 14 enters the lens body 62 from the incident surface 62a5 for the spot light distribution pattern can be suppressed. Of course, the present invention is not limited to this, and the incident surface 62a5 for the spot light distribution pattern may be configured as a surface (for example, a free-form surface) other than the spherical surface with the light source 14 as the center.

The reflecting surface 62a6 for the spot light distribution pattern is the incident surface 6 for the spot light distribution pattern.
2a5, the lens body 62 from the incident surface 62a5 for the spot light distribution pattern
It is configured as a surface that internally reflects (totally reflects) light from the light source 14 incident on the inside. The reflecting surface 62a6 for the spot light distribution pattern is the incident surface 62a for the spot light distribution pattern.
5 is a reflective surface that internally reflects (totally reflects) light from the light source 14 that has entered the lens body 62 from 5 and does not use metal deposition. Specifically, the reflecting surface 62a6 for the spot light distribution pattern is incident on the inside of the lens body 62 from the incident surface 62a5 for the spot light distribution pattern, and is internally reflected by the reflecting surface 62a6 for the spot light distribution pattern. The light from the light source 14 that has been (totally reflected) and emitted from the exit surface 62b2 for the spot light distribution pattern is collimated in the vertical direction (see FIG. 79A) and collimated in the horizontal direction. (Fig. 83 (b)
As shown, the surface shape is configured. Reflecting surface 62a for spot light distribution pattern
For example, a rotating paraboloidal reflecting surface whose focal point is set in the vicinity of the light source 14 (more precisely, the reference point _F62 ) can be used.

With the second optical system configured as described above, a spot light distribution pattern P _{Hi_SPOT} shown in FIG. _80C is formed on the virtual vertical screen.

That is, it passes through the notch 62a4 and enters the incident surface 62a5 for the spot light distribution pattern.
The light from the light source 14 incident on the inside of the lens body 62 and internally reflected (totally reflected) by the reflecting surface 62a6 for the spot light distribution pattern is collimated in the vertical and horizontal directions, and then distributed for the spot. The light is emitted from the light pattern emission surface 62b2. At that time, the light from the light source 14 emitted from the emitting surface 62b2 of the light distribution pattern for spot is configured as a surface of a planar shape exit surface 62b2 of the light distribution pattern for spot perpendicular to the reference axis AX ₆₂ For,
Relates vertical and horizontal directions, by being irradiated forward as parallel light with respect to the reference axis AX _62, forms a light distribution pattern P _{Hi_SPOT} spot shown in FIG. 80 (c).

The spot light distribution pattern P _{Hi_SPOT} is more concentrated than the wide light distribution pattern P _{Hi_WIDE} and has a higher luminous intensity. As a result, the light distribution pattern for high beam P _Hi (formed by superimposing the light distribution pattern for spot P _{Hi_SPOT} and the light distribution pattern for wide P _{Hi_WIDE} (
The synthetic light distribution pattern) has a high central luminous intensity and excellent distant visibility.

The becomes light distribution pattern P _{Hi_SPOT} spot is focused from the light distribution pattern P _{Hi_WIDE} for wide it is parallel to the reference axis AX ₆₂ wide light distribution pattern P _{Hi_WIDE} is relates vertical direction, the horizontal direction This is because the spot light distribution pattern P _{Hi_SPOT} is formed of light parallel to the reference axis AX _{62 in the} vertical and horizontal directions.

The intensity of the light distribution pattern P _{Hi_SPOT} spot is higher than the light distribution pattern P _{Hi_WIDE} for the wide, the light source 14 and the reflective surface 62a6 of the light distribution pattern for spots (and / or the incident surface of the light distribution pattern for spot 62a5 ) Is set longer than the distance between the light source 14 and the reflection surface 62a3 for the wide light distribution pattern (and / or the incident surfaces 62a1 and 62a2 for the wide light distribution pattern). _Therefore , in the second optical system that forms the spot light distribution pattern P _{Hi_SPOT} , the light source image of the light source 14 is relatively small compared to the first optical system that forms the wide light distribution pattern P _{Hi_WIDE} . This is because the spot light distribution pattern P _{Hi_SPOT} is formed with this relatively small light source image.

That is, as shown in FIG. 79 (a), the light source 14 and the reflecting surface 6 for the wide light distribution pattern.
In the first optical system in which the distance W to 2a3 is relatively short, the light source image of the light source 14 is large, which is suitable for the wide light distribution pattern P _{Hi_WIDE} . On the other hand, in the second optical system in which the distance S between the light source 14 and the reflecting surface 62a6 for the spot light distribution pattern is relatively long,
Since the light source image of the light source 14 becomes small, it is suitable for the spot light distribution pattern P _{Hi_SPOT} .

Note that by adjusting the angles θ1 and θ2 shown in FIG. 81 (a), the balance between the luminous intensity of the spot light distribution pattern P _{Hi_SPOT and} the luminous intensity of the wide light distribution pattern P _{Hi_WIDE} can be adjusted.

The lens body 62 of the present embodiment can also be used upside down as shown in FIG.

  According to the present embodiment, the following effects can be achieved.

That is, one spot light distribution pattern P _{Hi_SPOT} and wide light distribution pattern P _{Hi_WI
A} lens body 62 capable of forming a high beam light distribution pattern P _Hi (synthetic light distribution pattern) on which _DE is superimposed can be provided.

This is because one lens body 62 _includes a first optical system that forms the wide light distribution pattern P _{Hi_WIDE} and a second optical system that forms the spot light distribution pattern P _{Hi_SPOT} .

Further, according to the present embodiment, as a _result of the luminous intensity of the spot light distribution pattern P _{Hi_SPOT} being higher than that of the wide light distribution pattern P _{Hi_WIDE} , the spot light distribution pattern P _{Hi_SPOT} and the wide light distribution pattern P _{Hi_WIDE} are superimposed. Thus, the high beam light distribution pattern P _Hi (synthetic light distribution pattern) formed in this way has a high central luminous intensity and excellent distant visibility.

The intensity of the light distribution pattern P _{Hi_SPOT} spot is higher than the light distribution pattern P _{Hi_WIDE} for the wide, the light source 14 and the reflective surface 62a6 of the light distribution pattern for spots (and / or the incident surface of the light distribution pattern for spot 62a5 ) Is set longer than the distance between the light source 14 and the reflection surface 62a3 for the wide light distribution pattern (and / or the incident surfaces 62a1 and 62a2 for the wide light distribution pattern). _Therefore , in the second optical system that forms the spot light distribution pattern P _{Hi_SPOT} , the light source image of the light source 14 is relatively small compared to the first optical system that forms the wide light distribution pattern P _{Hi_WIDE} . This is because the spot light distribution pattern P _{Hi_SPOT} is formed with this relatively small light source image.

  Next, a lens body 62A that is a modification of the lens body 62 will be described.

  FIG. 86 is a longitudinal sectional view of the lens body 62A.

In the lens body 62A of the present modification, the exit surface 62b1 for the wide light distribution pattern is
It is configured as a planar surface.

The first incident surface 62a1 is collimated in the vertical direction with respect to the light from the light source 14 that enters the lens body 62A from the first incident surface 62a1 and exits from the exit surface 62Ab1 for the wide light distribution pattern. And the surface shape is comprised so that it may spread | diffuse regarding a horizontal direction. The reflection surface 62a3 for the wide light distribution pattern is incident on the inside of the lens body 62A from the second incident surface 62a and is internally reflected (totally reflected) by the reflection surface 62a3 for the wide light distribution pattern. The surface shape is configured such that light from the light source 14 emitted from the light distribution pattern emission surface 62a1 is collimated in the vertical direction and diffused in the horizontal direction. Otherwise, the configuration is the same as the lens body 62 of the thirteenth embodiment.

The lens body 62A of the present modification can also achieve the same effect as that of the thirteenth embodiment.

  Next, a lens body 62B that is a modification of the lens body 62 will be described.

  FIG. 87 is a longitudinal sectional view of the rear end 62a of the lens body 62B.

In the lens body 62B of this modification, the first incident surface 62a1 is omitted. That is, the incident surface A for the wide light distribution pattern is configured only by the second incident surface 62a. Otherwise, the configuration is the same as the lens body 62 of the thirteenth embodiment.

The lens body 62B of the present modification can also achieve the same effect as that of the thirteenth embodiment.

Next, as a fourteenth embodiment, a vehicle lamp 70 (lens body 72) that forms a low beam light distribution pattern or a high beam light distribution pattern will be described with reference to the drawings.

  The vehicular lamp 70 (lens body 72) of the present embodiment is configured as follows.

FIG. 88 (a) is a perspective view of the vehicular lamp 70 (lens body 72) as seen from the front obliquely below, FIG.
FIG. 8B is a perspective view of the vehicular lamp 70 (lens body 72) as seen from the rear and obliquely above. FIG.
9 (a) is a top view, FIG. 89 (b) is a front view, and FIG. 89 (c) is a side view. FIG. 90 is an exploded perspective view of the vehicular lamp 70 (lens body 72).

As shown in FIGS. 88 to 90, the vehicular lamp 70 (lens body 72) of this embodiment includes two vehicular lamps 10N (lens body 12N) of the twelfth embodiment and one vehicular lamp of the thirteenth embodiment. This corresponds to the one provided with the lamp 60 (lens body 62).

Hereinafter, the one lens body 12N is referred to as a first lens portion 12N _Lo1 (the first low-beam first lens according to the present invention).
The other lens body 12N is referred to as a second lens portion 12N _Lo2 (corresponding to the second lens portion for low beam of the present invention), and the lens body 62 is referred to as a third lens portion 62 _Hi (corresponding to the present invention). This corresponds to the third lens portion for high beam).

The lens body 72 (12N _Lo1 , 12N _Lo2 , 62 _Hi ) is integrally molded by injecting a transparent resin such as polycarbonate or acrylic, cooling and solidifying (by injection molding). That is, the lens portions 12N _Lo1 , 12N _Lo2 , and 62 _Hi are integrally molded and are connected to each other without an interface.

The first and second lens portions 12N _Lo1 and 12N _Lo2 have the same configuration as the lens body 12N shown in FIG. That is, the first and second lens portions 12N _Lo1 and 12N _Lo2 are disposed in front of the low beam first light source 14 _Lo1 and the low beam second light source 14 _Lo2 , as shown in FIG. A lens portion, each of a rear end portion 12A1aa and a front end portion 12A2b.
b, each light source 14 _Lo1 , 1 incident on the inside of each lens portion 12N _Lo1 , 12N _Lo2
4 the light from the _Lo2 is, by being irradiated forward emitted from each lens portion 12N _Lo1, 12N _Lo2 of the front end portion 12A2bb (second output surface 12A2b), the low beam light distribution including the cutoff line on an upper end edge It is configured as a lens portion that forms a pattern P _Lo (see FIG. 71A).

In the area AA1 surrounded by the alternate _long and _short dash line in FIG. _89B , light from the first light source 14 _Lo1 and the second light source 14 _Lo2 that form the low beam light distribution pattern P _Lo (see FIG. _71A ) is emitted. The area to be shown is shown.

The rear end portions 12A1aa of the first and second lens portions 12N _Lo1 and 12N _Lo2 each have a cone shape (from the front end portion 12A2bb side of each lens portion 12N _Lo1 and 12N _{Lo2 toward} the front end side of the rear end portion 12A1aa). Or a cone portion that narrows in a bell shape (refer to a portion including a pair of left and right side surfaces 44a and 44b in FIG. 89 (a)).

As shown in FIGS. 89 (b) and 89 (c), the first and second lens portions 12N _Lo1 and 12N _Lo2 are arranged in parallel in a direction inclined with respect to the horizontal, and in FIG. 89 (a). As shown, the first
A space is formed between the cone portion (corresponding to the first cone portion of the present invention) of the lens portion 12N _{Lo1 and} the cone portion (corresponding to the second cone portion of the present invention) of the second lens body 12N _Lo2. Connected to each other. Of course, not limited to this, the first lens unit 12N _Lo1 and the second lens unit 12N _Lo2 may be arranged in parallel in the horizontal direction and connected to each other.

The first and second lens portions 12N _Lo1 and 12N _Lo2 have a portion _where the optical function is not intended in the first lens portion 12N _Lo1 (for example, the left portion) and the optical function of the second lens portion 12N _Lo2. An unintended portion (for example, the right side portion) is connected (see FIG. 88B).

The front end portions 12A2bb of the first and second lens portions 12N _Lo1 and 12N _Lo2 include a semi-cylindrical emission surface (second emission surface 12A2b) provided with a slant angle and / or a camber angle. Of course, not limited to this, the front end 12 of the first and second lens portions 12N _Lo1 and 12N _Lo2 is used.
A2bb may include a semi-cylindrical emission surface (second emission surface 12A2b) in which the cylinder axis extends in the horizontal direction.

The low-beam light distribution pattern is such that the low-beam first light source 14 _Lo1 and the low-beam second light source 14 _Lo2 are turned on to thereby form a low-beam light distribution pattern P formed by the respective lens portions 12N _Lo1 and 12N _Lo2. It is formed as a combined light distribution pattern in which _Lo (see FIG. 71 (a)) is superimposed.

The third lens portion 62 _Hi has the same configuration as the lens body 62 shown in FIG. However,
The front end of the third lens unit 62 _Hi, unlike the lens body 62 shown in FIG. 79 (a), after the rear end 12A1aa and the second lens unit 12N _Lo2 of the first and second lens portions 12N _Lo1, 12N _Lo2 It is connected to the end 12A1aa (see FIG. 88 (b)). Other than that, the third lens unit 62
_Hi has the same configuration as the lens body 62 shown in FIG.

As shown in FIG. 89A and the like, the third lens unit 62 _Hi is a third light source 14 _Hi for high beam.
The third light source 14 that is incident on the inside of the third lens portion 62 _Hi.
The light from _Hi is _{transmitted to} the front end portions 12A2bb of the first and second lens portions 12N _Lo1 and 12N Lo2 (second
By exiting from the exit surface 12A2b) and being irradiated forward, FIG. 91 (a) and FIG.
It is configured as a lens body that forms a high beam light distribution pattern P _Hi (combined light distribution pattern) on which the _{respective partial} light distribution patterns P _{Hi_SPOT} and P _{Hi_WIDE} shown in FIG.

A region AA2 surrounded by a two-dot chain line in FIG. _89B is a region where light from the third light source 14 _Hi that forms the wide beam distribution pattern P _{Hi_WIDE} for high beam (see FIG. _91A ) is emitted. Is shown. A region AA3 surrounded by a solid line in FIG. _89B shows a region where light from the third light source 14 _Hi that forms the spot light distribution pattern P _{Hi_SPOT} for high beam (see FIG. _91B ) is emitted. ing.

As shown in FIG. 88 (b), at least a part of the third lens portion 62 _Hi is in a space between the cone portion of the first lens portion 12N _{Lo1 and} the cone portion of the second lens portion 12N _Lo2. the arrangement state, locations optical function is not intended of the rear end portion 12A1aa of the rear end portion 12A1aa and the second lens unit 12N _Lo2 of the first lens unit 12N _Lo1 (e.g., the first lens unit 12N _{Lo
1 at} the rear end 12A1aa and the second lens portion 12N _{Lo2 at} the rear end 12A1aa).
Each of the cone portions (particularly, a pair of left and right side surfaces 44a and 44b) is connected in a form that does not interfere.

FIG. 92 is a perspective view of the third lens portion 62 _Hi as viewed obliquely from above and rearward. FIG. 93 is a longitudinal sectional view (schematic diagram) of the lens body 72.

As shown in FIGS. 92 and 93, the rear end portion 62a of the third lens portion 62 _Hi has the same configuration as the lens body 62 shown in FIG. 79 (a). In other words, the rear end portion 62a of the third lens portion 62 _Hi is incident on the incident surface A for the wide light distribution pattern and the third light source incident on the inside of the third lens portion 62 _Hi from the incident surface A for the wide light distribution pattern. Reflecting surface 62a3 for the wide light distribution pattern for internally reflecting the light from 14 _Hi , the incident surface 62a5 for the spot light distribution pattern, and the third lens portion 62 _Hi from the incident surface 62a5 for the spot light distribution pattern. the light from the third light source 14 _Hi incident inside contains a reflective surface 62a6 of the light distribution pattern for spot internal reflection.

The incident surface A for the wide light distribution pattern has a first incident surface 62 that is convex toward the third light source 14 _Hi.
a1, from the outer peripheral edge of the first incident surface 62a1 extending toward the rear, of the space between the third light source 14 _Hi and the first incident surface 62a1, notch light from the third light source 14 _Hi passes Part 62a
A cylindrical second incident surface 62a2 surrounding a range other than 4 is included.

The reflection surface 62a3 for the wide light distribution pattern is disposed outside the second incident surface 62a2.
This is a reflection surface that internally reflects light from the third light source 14 _Hi that has entered the third lens portion 62 _Hi from the second incident surface 62a2.

As shown in FIGS. 88B and 92, the incident surface A for the wide light distribution pattern (the first incident surface 62a1 and the second incident surface 62a2) and the reflective surface 62a3 for the wide light distribution pattern are as shown in FIGS. _Rear end portion 12A1aa of the first lens portion 12N _Lo1 and rear end portion 12A1 of the second lens portion 12N _Lo2
It arrange | positions at the front-end | tip part of extension part 62a7 extended toward the back from the part with which aa was connected.

Incidentally, omitted extensions 62A7, the portion near the rear end 12A1aa are connected at the rear end 12A1aa and the second lens unit 12N _Lo2 of the first lens unit 12N _Lo1, incident plane A of the light distribution pattern for the wide The (first incident surface 62a1 and second incident surface 62a2) and the reflecting surface 62a3 for the wide light distribution pattern can also be disposed (the cone portion of the first lens portion 12N _{Lo1 and} the cone of the second lens portion 12N _Lo2 ). The case where the third light source 14 _Hi and the substrate on which the third light source 14 _Hi is mounted can be arranged in a space between the body part).

Of the space between the third light source 14 _Hi and the first incident surface 62a1, the range of the angle θ1 similar to that shown in FIG. 81A is the second incident surface 62a2 (and the reflection for the wide light distribution pattern). Surface 62a
3), the range of the angle θ2 is not surrounded by the second incident surface 62a2 (and the reflecting surface 62a3 for the wide light distribution pattern), and the light from the third light source 14 _Hi passes therethrough. A sector-shaped notch 62a4 is formed. As shown in FIG. 82, the range of the angle θ2 is surrounded by the second incident surface 62a2 (and the reflecting surface 62a3 for the wide light distribution pattern) whose dimension in the direction of the reference axis AX _62Hi is relatively short. It may be.

Incident surface 62a5 of the light distribution pattern for spot concave incident surface which light from the third light source 14 _Hi passing through the notches 62a4 toward the third light source 14 _Hi incident inside the third lens unit 62 _Hi It is.

The reflecting surface 62a6 for the spot light distribution pattern is the incident surface 6 for the spot light distribution pattern.
Is arranged outside the 2a5, a reflective surface for internal reflection of light from the third light source 14 _Hi incident from the incident surface 62a5 of the light distribution pattern for a spot inside the third lens unit 62 _Hi.

Figure 89 (b), as shown in FIG. 89 (c), the front end portion of the third lens unit 62 _Hi is the front end 12A2bb (emission surface of the semi-cylindrical first and second lens portions 12N _Lo1, 12N _Lo2 12A2b
), And an output surface 62b2 for the spot light distribution pattern.

The first optical system that forms the wide light distribution pattern P _{Hi_WIDE} (see FIG. _91A ) is configured as follows.

As shown in FIGS. 92 to 94, the incident surface A for the wide light distribution pattern (the first incident surface 62a).
1 and second incident surface 62a2), reflecting surface 62a3 for wide light distribution pattern, first and second
The front end portions 12A2bb (semi-columnar exit surface 12A2b) of the lens portions 12N _Lo1 and 12N _Lo2 are arranged from the entrance surface A (the first entrance surface 62a1 and the second entrance surface 62a2) for the wide light distribution pattern. 62 _Hi light Ray _{Hi_WIDE} from the third light source 14 _Hi incident therein, a front end 12A2bb (semicylindrical exit surface of the first and second lens portions 12N _Lo1, 12N _Lo2 12A2
A first optical system is formed which emits from b) and is irradiated forward to form a wide beam distribution pattern P _{Hi_WIDE} (see FIG. _91A ) for a high beam.

The first incident surface 62a1 is a surface on which the light from the third light source 14 _Hi is refracted and is incident on the inside of the third lens portion 62 _Hi , and has a curved surface (for example, a free surface) convex toward the third light source 14 _Hi. Curved surface). Specifically, the first incident surface 62a1 is third from the first incident surface 62a1.
The light Ray _{Hi_WIDE} from the third light source 14 _Hi that has entered the lens unit 62 _Hi is the front end portion 12A2bb (semi-columnar emission surface 12A2b) of the first and second lens units 12N _Lo1 and 12N _{Lo2 in} the vertical direction. _Condensed near the focal line F _12A2b (see FIGS. 93 and 94 (a)) and diffused in the horizontal direction (see FIG. 94 (b)) (or collimated).
The surface shape is configured.

Second incident surface 62a2 is a plane light Ray _{Hi_WIDE} that does not enter the first entrance surface 62a1 enters inside the third lens unit 62 _Hi refracted out of the light from the third light source 14 _Hi, the first incident surface 62
A portion extending from the outer peripheral edge of a1 to the rear and in a space between the third light source 14 _Hi and the first incident surface 62a1 other than the notch _62a4 through which the light Ray _{Hi_SPOT} from the third light source 14 _Hi passes. It is comprised as a cylindrical surface (for example, free-form surface) surrounding a range.

The reflection surface 62a3 for the wide light distribution pattern is disposed outside the second incident surface 62a2.
Light Ra from the third light source 14 _Hi incident on the inside of the third lens portion 62 _Hi from the second incident surface 62a2.
y _{Hi_WIDE} is configured as a surface for internal reflection (total reflection). The reflecting surface 62a3 for the wide light distribution pattern is a reflecting surface that internally reflects (totally reflects) the light Ray _{Hi_WIDE} from the third light source 14 _Hi that has entered the third lens unit 62 _Hi from the second incident surface 62a2. Metal deposition is not used. Specifically, the reflection surface 62a3 for the wide light distribution pattern is the second incident surface 62a2.
The light Ray _{Hi_WIDE} from the third light source 14 _Hi incident on the inside of the third lens portion 62 _{Hi and} internally reflected (totally reflected) by the reflecting surface 62a3 for the wide light distribution pattern is _related to the vertical direction.
_Front end portions 12A2bb of the first and second lens portions 12N _Lo1 and 12N Lo2 (semi-columnar exit surface 1)
2A2b) focused near the focal line F _12A2b (see FIGS. 93 and 94 (a)) and diffused in the horizontal direction (see FIG. 94 (b)) (or collimated) ), The surface shape is configured.

With the first optical system configured as described above, the wide light distribution pattern P _{Hi_WIDE} shown in FIG. _91A is formed on the virtual vertical screen.

That is, the third light source 14 _Hi that has entered the third lens portion 62 _Hi from the first incident surface 62a1.
Light Ray _{Hi_WIDE} from, and the third light source 14 which is internally reflected by the reflecting surface 62a3 of the light distribution pattern for the wide incident from the second incident surface 62a2 inside the third lens unit 62 _Hi (total reflection)
The light Ray _{Hi_WIDE} from _Hi is related to the first and second lens portions 12N _Lo1 and 12N in the vertical direction.
Focal line F _12A2b near the condenser of the _Lo2 the front end 12A2bb (semicylindrical exit surface 12A2b) (see FIG. 93 and FIG. 94 (a)). Thereafter, as shown in FIG. 94 (b), first and The lens body 7 from the intermediate exit surface (a pair of left and right exit surfaces 46a and 46b) of the second lens portions 12N _Lo1 and 12N _Lo2
2 emitted to the outside, further, the first and second lens portions incident from intermediate the entrance surface of the first and second lens portions 12N _Lo1, 12N _Lo2 (second incident surface 12A2a) inside the lens body 72 12N _Lo1
89N of the front end portion 12A2bb (semi-columnar exit surface 12A2b) of 12N _Lo2
) From the area AA2 surrounded by a two-dot chain line. At that time, the first and second lens portions 12N
_Lo1 and 12N _Lo2 is emitted from the front end portion 12A2bb (semi-columnar emission surface 12A2b).
The light Ray _{Hi_WIDE} from the light source 14 _Hi is condensed in the vertical direction by the action of the front end portions 12A2bb (semi-cylindrical emission surface 12A2b) of the first and second lens portions 12N _Lo1 and 12N _Lo2 , and is then referred to the reference axis AX. A light distribution pattern P _{Hi_WIDE} for wide shown in FIG. _91A is formed by irradiating forward as light diffused in the horizontal direction parallel to _62Hi .

The second optical system for forming the spot light distribution pattern P _{Hi_SPOT} (see FIG. _91B ) is configured as follows.

As shown in FIGS. 92 to 94, the incident surface 62a5 for the spot light distribution pattern, the reflection surface 62a6 for the spot light distribution pattern, and the exit surface 62b2 for the spot light distribution pattern.
Is the light R from the third light source 14 _Hi that is incident on the inside of the third lens portion 62 _Hi from the incident surface 62a5 for the spot light distribution pattern and is internally reflected by the reflection surface 62a6 for the spot light distribution pattern.
ay _{Hi_SPOT} is emitted from the exit surface 62b2 for the spot light distribution pattern and is irradiated forward to form a second light system that forms the spot light distribution pattern P _{Hi_SPOT} (see FIG. _91B ) for the high beam. doing.

Specifically, the incident surface 62a5 for the spot light distribution pattern, the reflection surface 62a6 for the spot light distribution pattern, and the exit surface 62b2 for the spot light distribution pattern are formed by the notch 6.
Passes through 2a4, the third light source 14 that is internally reflected (total reflection) by the reflecting surfaces 62a6 for incident to the spot light distribution pattern from the incident surface 62a5 inside the third lens portion 62 _Hi of the light distribution pattern for spot _A second optical system in which the light Ray _{Hi_SPOT} from the _Hi is emitted from the emission surface 62b2 for the spot light distribution pattern and irradiated forward to form the spot light distribution pattern P _{Hi_SPOT} (see FIG. _91B ). It is composed.

The exit surface 62b2 for the spot light distribution pattern is configured as a planar surface orthogonal to the reference axis _AX62Hi . Of course, the present invention is not limited to this, and the exit surface 62b2 for the spot light distribution pattern may be configured as a curved surface.

The exit surface 62b2 for the spot light distribution pattern includes first and second lens portions 12N _Lo1 , 1
The 2N _Lo2 front end portion 12A2bb (semi-cylindrical emission surface 12A2b) is disposed at a rear position (see FIG. 93). Of course, the present invention is not limited to this, and the exit surface 62b2 for the spot light distribution pattern is a _position in front of the front end portion 12A2bb (semi-columnar exit surface 12A2b) of the first and second lens portions 12N _Lo1 and 12N _Lo2 , or the first. 1 and 2nd lens part 12N _Lo1 , 12N _Lo2
The front end portion 12A2bb (semi-columnar emission surface 12A2b) may be disposed at the same position.

The incident surface 62a5 for the spot light distribution pattern is formed by the light Ray _{Hi_SPO} from the third light source 14 _Hi.
T is a surface incident on the inside of the third lens portion 62 _Hi , and is configured as a concave curved surface toward the third light source 14 _Hi . Specifically, the incident surface 62a5 for the spot light distribution pattern is:
The third light source 14 _Hi (precisely, the reference point F _62Hi ) is configured as a spherical surface. Thereby, it is possible to suppress the Fresnel reflection loss when the light Ray _{Hi_SPOT} from the third light source 14 _Hi enters the third lens portion 62 _Hi from the incident surface 62a5 for the spot light distribution pattern. Of course, not limited to this, the incident surface 62a5 for the spot light distribution pattern
May be configured as a surface (for example, a free-form surface) other than the spherical surface centered on the third light source 14 _Hi .

The reflecting surface 62a6 for the spot light distribution pattern is the incident surface 6 for the spot light distribution pattern.
Is arranged outside the 2a5, is configured as a surface for internal reflection (total reflection) light Ray _{Hi_SPOT} from the incident surface 62a5 from the third light source 14 _Hi incident inside the third lens portion 62 _Hi of the light distribution pattern for spot ing. The reflecting surface 62a6 for the spot light distribution pattern reflects the light Ray _{Hi_SPOT} from the third light source 14 _Hi that has entered the third lens portion 62 _Hi from the incident surface 62a5 for the spot light distribution pattern into the inner surface (total reflection). The reflective surface does not use metal vapor deposition. Specifically, the reflective surface 62a6 of the light distribution pattern for spot is incident from the incident surface 62a5 of the light distribution pattern for a spot inside the third lens unit 62 _Hi reflecting surface for light distribution pattern for the spot 62a6 The inner surface is reflected (totally reflected) at the output surface 62b2 for the spot light distribution pattern.
The light Ray _{Hi_SPOT} emitted from the third light source 14 _Hi is collimated in the vertical direction (see FIG. 93 and FIG. _95A ) and collimated in the horizontal direction (FIG. 9).
5 (b)), the surface shape is configured. As the reflecting surface 62a6 for the spot light distribution pattern, for example, a rotating paraboloid reflecting surface whose focal point is set in the vicinity of the third light source 14 _Hi (more precisely, the reference point F _62Hi ) can be used. .

The spot light distribution pattern P _{Hi_SPOT} shown in FIG. _91B is formed on the virtual vertical screen by the second optical system configured as described above.

That is, it passes through the notch 62a4 and enters the incident surface 62a5 for the spot light distribution pattern.
The light Ray _{Hi_SPOT} from the third light source 14 _Hi incident on the inside of the third lens portion 62 _{Hi and} internally reflected (totally reflected) by the reflecting surface 62a6 for the spot light distribution pattern is related to the vertical direction and the horizontal direction. After being collimated, the light is emitted from the exit surface 62b2 for the spot light distribution pattern. At this time, the light Ray _{Hi_SPOT} from the third light source 14 _Hi that is emitted from the emission surface 62b2 for the spot light distribution pattern has the emission surface 62b2 for the spot light distribution pattern having the reference axis AX _62Hi.
91 is formed as a plane surface orthogonal to the vertical direction and the horizontal direction, and is irradiated in the forward direction as light parallel to the reference axis AX _62Hi , whereby the spot distribution shown in FIG. An optical pattern P _{Hi_SPOT} is formed.

The spot light distribution pattern P _{Hi_SPOT} is more concentrated than the wide light distribution pattern P _{Hi_WIDE} and has a higher luminous intensity. As a result, the light distribution pattern for high beam P _Hi (formed by superimposing the light distribution pattern for spot P _{Hi_SPOT} and the light distribution pattern for wide P _{Hi_WIDE} (
The synthetic light distribution pattern) has a high central luminous intensity and excellent distant visibility.

The becomes light distribution pattern P _{Hi_SPOT} spot is focused from the light distribution pattern P _{Hi_WIDE} for wide is parallel to the reference axis AX _62Hi wide light distribution pattern P _{Hi_WIDE} is relates vertical direction, the horizontal direction whereas formed by diffused light Ray _{Hi_WIDE} relates relates vertical and horizontal light distribution pattern P _{Hi_SPOT} spot, due to the fact that is formed by parallel light Ray _{Hi_SPOT} respect to the reference axis AX _62Hi It is.

The intensity of the light distribution pattern P _{Hi_SPOT} spot is higher than the light distribution pattern P _{Hi_WIDE} for wide is the third light source 14 _Hi and reflective surface 62a6 of the light distribution pattern for spots (and / or the light distribution pattern for spot the distance between the incident surface 62a5) is a third light source 14 _Hi and reflecting surface of the light distribution pattern for the wide 62A3 (and / or the incident surface 62a1 of the light distribution pattern for the wide,
62a2) is set to be longer than the distance to the light distribution pattern P _Hi for the spot.
_In the second optical system for forming the _{_SPOT} , the first for forming the wide light distribution pattern P _{Hi_WIDE}
This is because the light source image of the third light source 14 _Hi is relatively small compared to the optical system, and the spot light distribution pattern P _{Hi_SPOT} is formed with this relatively small light source image.

That is, as shown in FIG. 93, the third light source 14 _Hi and the reflecting surface 6 for the wide light distribution pattern.
In the first optical system distance W is relatively close between 2a3, since the light source image of the third light source 14 _Hi increases are suitable wide light distribution pattern P _{Hi_WIDE.} On the other hand, the third light source 14 _Hi
Since the light source image of the third light source 14 _Hi is small in the second optical system in which the distance S between the light source and the reflecting surface 62a6 for the spot light distribution pattern is relatively long, the light distribution image for the spot P _{Hi_S.}
Suitable for _POT .

Note that by adjusting the angles θ1 and θ2 shown in FIG. 81 (a), the balance between the luminous intensity of the spot light distribution pattern P _{Hi_SPOT and} the luminous intensity of the wide light distribution pattern P _{Hi_WIDE} can be adjusted.

The high beam light distribution pattern P _Hi is a high beam spot light distribution pattern by turning on the first light source 14 _Lo1 for low beam, the second light source 14 _Lo2 for low beam, and the third light source 14 _Hi for high beam. P _{Hi_SPOT} (see FIG. 91 (b)), high beam wide light distribution pattern P _{Hi_WIDE} (see FIG. 91 (a)) and low beam light distribution pattern P _Lo (see FIG. 71).
(A) is formed as a combined light distribution pattern superimposed. Of course, not limited to this, high-beam light distribution pattern P _Hi, by third light source 14 _Hi for a high beam is turned on, the spot light distribution pattern P _{Hi_SPOT} for high beam (see FIG. 91 (b)) and A wide light distribution pattern P _{Hi_WIDE} for high beam (see FIG. _91A ) may be formed as a combined light distribution pattern.

  According to the present embodiment, the following effects can be achieved.

That is, it is possible to reduce the size of the lens body 72 in which the first and second lens portions 12N _Lo1 and 12N _Lo2 for low beam and the third lens portion 62 _Hi for high beam are integrally molded. First, the third lens portion 62 _Hi is at least partially a first lens portion 12N.
In a first cone portion _Lo1 state of being positioned in the space between the second cone portion of the second lens unit 12N _Lo2, the rear end portion of the first lens unit 12N _Lo1 and the second lens unit 12N _Lo2 It is connected to the rear end (connected in the form of a series arrangement rather than a parallel arrangement), and _secondly , the front end parts of the first and second lens parts 12N _Lo1 and 12N _Lo2 for low beam (exit) surface 12A2b), and, instead of the front end portion of the third lens portion 62 _Hi for high beam (exit surface) is formed as a separate front end physically separate (exit surface), a first low-beam And the second lens unit 1
A part of the front end portion (exit surface 12A2b) of 2N _Lo1 and 12N _Lo2 (see area AA2 surrounded by a two-dot chain line in FIG. 89B) is the front end portion (exit surface) of the third lens portion 62 _Hi for high beam. (That is, a part of the low beam exit surface 12A2b also serves as the high beam exit surface).

Further, it is possible to provide a lens body 72 that can form a high beam light distribution pattern P _Hi (synthetic light distribution pattern) on which a spot light distribution pattern P _{Hi_SPOT} and a wide light distribution pattern P _{Hi_WIDE} are superimposed. Can do.

This is because one lens body 72 _includes a first optical system that forms the wide light distribution pattern P _{Hi_WIDE} and a second optical system that forms the spot light distribution pattern P _{Hi_SPOT} .

Further, as a _result of the luminous intensity of the spot light distribution pattern P _{Hi_SPOT} being higher than that of the wide light distribution pattern P _{Hi_WIDE} , the spot light distribution pattern P _{Hi_SPOT} and the wide light distribution pattern P _{Hi_WIDE} are formed. The light distribution pattern P _Hi (synthetic light distribution pattern) can have a high central luminous intensity and excellent distant visibility.

The intensity of the light distribution pattern P _{Hi_SPOT} spot is higher than the light distribution pattern P _{Hi_WIDE} for wide is the third light source 14 _Hi and reflective surface 62a6 of the light distribution pattern for spots (and / or the light distribution pattern for spot the distance between the incident surface 62a5) is a third light source 14 _Hi and reflecting surface of the light distribution pattern for the wide 62A3 (and / or the incident surface 62a1 of the light distribution pattern for the wide,
62a2) is set to be longer than the distance to the light distribution pattern P _Hi for the spot.
_In the second optical system for forming the _{_SPOT} , the first for forming the wide light distribution pattern P _{Hi_WIDE}
This is because the light source image of the third light source 14 _Hi is relatively small compared to the optical system, and the spot light distribution pattern P _{Hi_SPOT} is formed with this relatively small light source image.

As described above, “a first lens portion for low beam, a second lens portion for low beam, and
The idea that the third lens portion for high beam is integrally molded is based on the vehicle lamp 10N (lens body 12N) of the twelfth embodiment shown in FIG. 69 and the vehicle lamp 64 (lens of the thirteenth embodiment shown in FIG. 79). The present invention can be applied not only to the body 66) but also to the vehicle lamp (lens body) described in the above embodiments and various other vehicle lamps (lens body).

For example, as the first and second lens portions, the lens body 12N of the twelfth embodiment shown in FIG.
Instead of the lens body 12 of the first embodiment shown in FIG. 1, the lens body 12A of the second embodiment shown in FIG. 16, the lens body 12J of the tenth embodiment shown in FIG. 46, or the lens body 12J of FIG. The lens body 12K of the eleventh embodiment can be used. This is because these lens bodies are all low beam lens portions.

Here, as the first and second lens portions, the lens body 12N of the twelfth embodiment shown in FIG.
Instead, a lens body 72A using the lens body 12K of the eleventh embodiment shown in FIG. 56 will be described.

  96 (a) is a top view of the lens body 72A, and FIG. 96 (b) is a front view.

The lens body 72A of the present modification has two twelfth elements constituting the lens body 72 of the fourteenth embodiment.
This corresponds to the vehicle lamp 10N (lens body 12N) of the embodiment replaced with two vehicle lamps 10K (lens body 12K) of the eleventh embodiment. Other than that, the lens body 72A of the present modification has the same configuration as the lens body 72 of the fourteenth embodiment.

As shown in FIG. 96 (a), the rear end portions 12 of the first and second lens portions 12K _Lo1 and 12K _Lo2 are used.
A1aa is a cone portion (or bell shape) that narrows in a cone shape (or bell shape) from the front end portion 12A2bb side of each lens portion 12K _Lo1 and 12K _{Lo2 toward} the front end side of the rear end portion 12A1aa.
96 (a) includes a pair of left and right side surfaces 44a and 44b).

The first and second lens portions 12K _Lo1 and 12K _Lo2 are arranged in parallel in the horizontal direction as shown in FIG. 96 (b), and as shown in FIG. 96 (a), the cones of the first lens portion 12K _Lo1 . Part (corresponding to the first cone part of the present invention) and the cone part of the second lens body 12K _Lo2 (corresponding to the second cone part of the present invention)
Are connected to each other with a space formed between them. Of course, not limited to this,
The first lens unit 12K _Lo1 and the second lens unit 12K _Lo2 may be arranged in parallel in a direction inclined with respect to the horizontal and connected to each other.

The front end portions 12A2bb of the first and second lens portions 12K _Lo1 and 12K _Lo2 include a planar emission surface 12Kb extending in the horizontal direction (see 46a, 46b, and 46c in FIG. 56).
Of course, not limited to this, the front end portion of the first and second lens portions 12N _Lo1, 12N _Lo2 12A2
bb may include a planar emission surface 12Kb to which a slant angle and / or a camber angle is provided.

The first incident surface 62a1 is the exit surface of the front end 12A2bb (planar shape from the first incident surface 62a1 third lens unit 62 first and second lens portions 12K are incident on the internal _{Hi Lo1,} 12K _Lo2 12Kb ) From the third light source 14 _Hi is collimated in the vertical direction and diffused in the horizontal direction. The reflecting surface 62a3 of the light distribution pattern for the wide is from the second incident surface 62a is incident inside the third lens unit 62 _Hi internally reflected by the reflecting surface 62a3 of the light distribution pattern for the wide (total reflection) ,
_Front end portions 12A2bb of the first and second lens portions 12K _Lo1 and 12K Lo2 (planar emission surface 1)
The surface shape is configured such that light from the third light source 14 _Hi emitted from 2 Kb) is collimated in the vertical direction and diffused in the horizontal direction. Other than that, 14th
The configuration is the same as the lens body 72 of the embodiment.

The lens body 72A of the present modification can also provide the same effects as those in the fourteenth embodiment.

  Next, a lens body 72B that is a modification of the lens body 72 will be described.

In the lens body 72B of this modification, the first incident surface 62a1 is omitted as in the rear end portion 62a of the lens body 62B shown in FIG. That is, the incident surface A for the wide light distribution pattern is configured by only the second incident surface 62a2. Otherwise, the configuration is the same as the lens body 72 of the fourteenth embodiment.

Also with the lens body 72B of this modification, the same effects as in the fourteenth embodiment can be obtained.

Will now be described lens body 72 (third lens portion 62 _Hi) modification is an example lens body 72C (third lens unit 62C _Hi).

The lens body 72C (third lens portion 62C _Hi ) of the present modification has an incident surface 62a5 for the spot light distribution pattern and a reflection surface 62a6 for the spot light distribution pattern from the third lens portion 62 _Hi shown in FIG. This corresponds to a configuration in which the second optical system for forming the spot light distribution pattern exit surface 62b2, that is, the high beam spot light distribution pattern P _{Hi_SPOT} (see FIG. _91B ) is omitted.

FIG. 81 (b) is a front view of the rear end portion 62a (near the first incident surface 62a1, the second incident surface 62a2, and the reflection surface 62a3 for the wide light distribution pattern) of the lens body 72C (third lens portion 62C _Hi ). FIG.

In the lens body 72C (third lens portion 62C _Hi ) of the present modification, as shown in FIG. 81 (b), the space between the third light source 14 _Hi and the first incident surface 62a1 is the second incident surface 62a2. (And the reflecting surface 62a3 for the wide light distribution pattern). That is, in the lens body 72C (third lens portion 62C _Hi ) of this modification, the fan-shaped notch 62a4 through which the light from the third light source 14 _Hi passes is omitted.

According to this modification, only the high beam diffusion pattern P _{Hi_WIDE} can be formed. In addition, by adjusting the surface shape of the first incident surface 62a1 and / or the second incident surface 62a2, it is possible to form only the high beam spot light distribution pattern.

  Next, a vehicle lamp 10P according to a fifteenth embodiment will be described with reference to the drawings.

  The vehicular lamp 10P of the present embodiment is configured as follows.

FIG. 97A shows the rear end portion 12 of the lens body 12N constituting the vehicular lamp 10P of the present embodiment.
A front view of A1aa, FIG. 97 (b) is an AA sectional view (schematic diagram) of FIG. 97 (a), and FIG. 97 (c).
) Is a cross-sectional view (schematic diagram) along BB in FIG.

As shown in FIGS. 97 (a) to 97 (c), the vehicular lamp 10P of the present embodiment is similar to that shown in FIG.
It corresponds to what added the reflective surface Ref with respect to the vehicle lamp 10N of 12th Embodiment shown in FIG.

In the vehicular lamp 10N of the twelfth embodiment, the left and right sides of the space between the light source 14 and the first incident surface 12a are surrounded by a pair of left and right incident surfaces 42a and 42b (see FIG. 50B). Therefore, the light Ray _MID from the light source 14 spreading in the left-right direction is directly incident on the inside of the lens body 12N from the pair of left and right entrance surfaces 42a, 42b, and the low beam light distribution pattern P _LO (
This is used to form a mid light distribution pattern P _{MID_L} , P _{MID_R} ). Further, the upper side of the space between the light source 14 and the first incident surface 12a is surrounded by the upper incident surface 42c (see FIG. 72B).
Therefore, the light Ray _WIDE from the light source 14 spreading in the upward direction is directly incident on the inside of the lens body 12N from the upper incident surface 42c to form a low beam light distribution pattern P _LO (wide light distribution pattern P _WIDE ). Used for.

However, in the vehicular lamp 10N of the twelfth embodiment, as shown in FIG.
The light Ray _OUT from the light source 14 spreading downward does not enter the lens body 12N and is not used to form the low beam light distribution pattern _PLO .

Vehicle lamp 10N of the present embodiment, the lens optical Ray _OUT from the light source 14 extending downward does not enter inside the lens body 12N rear end 12A1aa (i.e. the incident surface 12a, 42a, 42b) of the lens body 12N from It is made incident inside the body 12N, for use in forming the light distribution pattern P _LO for low beam, and a reflecting surface Ref.

The reflection surface Ref reflects light Ray _OUT other than light directly incident on the inside of the lens body 12N from the rear end portion 12A1aa of the lens body 12N among the light from the light source 14, and reflects the rear end portion 12A1aa (
That is, it is a reflecting surface that enters the lens body 12N from the incident surfaces 12a, 42a, and 42b).

As shown in FIGS. 97 (a) to 97 (c), the reflection surface Ref includes the light source 14 and the first incident surface 1.
It arrange | positions so that the said space may be surrounded from the lower side under the space between 2a. The reflection surface Ref is fixed to the substrate K on which the light source 14 is mounted. Of course, the present invention is not limited to this, and the reflecting surface Ref may be fixed to a housing (not shown) or the like constituting a lamp chamber in which the vehicular lamp 10P is accommodated.

The reflecting surface Ref may be a reflector that has been subjected to metal deposition such as aluminum deposition, a metal plate that has been subjected to mirror surface treatment, a mirror member, or other than this. It may be a reflective member.

The reflection surface Ref may be a planar reflection surface or a curved reflection surface.

In the vehicular lamp 10P having the above configuration, as shown in FIG. 97 (c), the light from the light source 14 spreading downward is disposed below the space between the light source 14 and the first incident surface 12a. Reflected by the reflecting surface Ref and the rear end 12A1aa of the lens body 12N (that is, the incident surface 12a,
42a, 42b) is incident on the inside of the lens body 12N, and is used to form a low beam light distribution pattern P _LO (spot light distribution pattern P _SPOT , mid light distribution pattern P _{MID_L} , P _{MID_R} ).

At this time, the first optical system (FIG. 4) in which the reflected light from the reflecting surface Ref incident on the inside of the lens body 12N from the first incident surface 12a forms a spot light distribution pattern P _SPOT (see FIG. 71 (b)).
9 (a)) is controlled below the cutoff line by the first lower reflecting surface 12b (and shade 12c). For this reason, glare occurs in the low beam spot light distribution pattern P _SPOT (see FIG. 71 (b)) due to the reflected light from the reflecting surface Ref incident on the inside of the lens body 12 N from the first incident surface 12 a. Can be suppressed.

Further, the reflecting surface Re that has entered the lens body 12N from the pair of left and right incident surfaces 42a and 42b.
The reflected light from f is the mid light distribution pattern P _{MID_L} , P _{MID_R} (FIG. 71 (c), FIG. 71 (d).
)) Is controlled below the cut-off line by a pair of left and right second lower reflecting surfaces 48a and 48b (and shades 48c and 48d) constituting a second optical system (see FIGS. 73 and 74). Therefore, due to the reflected light from the reflecting surface Ref incident on the inside of the lens body 12N from the pair of left and right incident surfaces 42a and 42b, the light distribution pattern P _{MID_} for the low beam is used.
_Generation of glare in _L and P _{MID_R} can be suppressed.

According to the present embodiment, in addition to the effects of the twelfth embodiment, the following effects can be further achieved.

That is, a light distribution pattern (a spot light distribution pattern P _SPOT , a mid light distribution pattern P _{MID_L} , P _{MID_R} ) including a light source 14 and a lens body 12N arranged in front of the light source 14 and including a cut-off line at the upper edge. In the vehicular lamp 10P configured to form the above, it is possible to suppress a decrease in light utilization efficiency. This is because the light from the light source 14 other than the light directly incident on the inside of the lens body 12N (light Ray _OUT from the light source 14 spreading downward, see FIG. 98) is reflected and the rear end portion of the lens body 12N is reflected. 12A1aa (ie, the incident surfaces 12a, 4
This is due to the provision of the reflecting surface Ref that enters the lens body 12N from 2a, 42b).

  Next, a reflection surface RefA that is a modification of the reflection surface Ref will be described.

  FIG. 99 is an example (top view) of the reflecting surface RefA of this modification.

The reflection surface RefA of this modification example is a reflection surface including a first reflection region Ref _SPOT , a second reflection region Ref _{MID_L} , and a third reflection region Ref _{MID_R} that are divided into three corresponding to the incident surfaces 12a, 42a, and 42b. It is configured as. Specifically, the reflecting surface RefA of this modification, the first reflection area Ref _SPOT be incident from the first incidence plane 12a reflects a portion of light within the lens body 12N from a light source 14, from light source 14 The second reflection region Ref _{MID_L} that reflects the other part of the light and enters the inside of the lens body 12N from the one incident surface 42a of the pair of left and right incident surfaces, and the other part of the light from the light source 14 The reflection surface includes a third reflection region Ref _{MID_R} that reflects and enters the lens body 12N from the other incident surface 42b of the pair of left and right incident surfaces. The leading edge of each of the reflection regions Ref _SPOT , Ref _{MID_L} , Ref _{MID_R} has a shape along the incident surfaces 12 a, 42 a, 42 b when viewed from above.

In the first reflection region Ref _SPOT , the reflected light from the first reflection region Ref _SPOT that has entered the lens body 12N from the first incident surface 12a is, for example, in a region indicated by a symbol P _{SPOT (Ref)} in FIG. The surface shape is configured so that light is distributed. The second reflection region Ref _{MID_L} is
The reflected light from the second reflective region Ref _{MID_L} that has entered the lens body 12N from the left incident surface 42a is distributed to, for example, the region indicated by the symbol P _{MID_L (Ref)} in FIG. The shape is configured. The third reflection region Ref _{MID_R} is formed from the right incident surface 42b to the lens body 1.
The surface shape is configured such that the reflected light from the third reflection region Ref _{MID_R} incident on the inside of 2N is distributed, for example, to the region indicated by the symbol P _{MID_R (Ref)} in FIG. Of course, the present invention is not limited to this, and each of the reflection regions Ref _SPOT , Ref _{MID_L} , and Ref _{MID_R} may have a surface shape so that each reflected light is distributed to other regions.

According to the reflective surface RefA of this modification, each reflective region Ref _SPOT , Ref _{MID_L} , Re
f _By adjusting _{MID_R} individually, the lens body 1 is changed from each incident surface 12a, 42a, 42b.
The reflected light from each of the reflection areas Ref _SPOT , Ref _{MID_L} , and Ref _{MID_R} incident on the inside of 2N can be individually controlled.

As described above, the idea of “adding a reflecting surface to improve the utilization efficiency of light from the light source 14” is not limited to the vehicle lamp 10N of the twelfth embodiment, and is described in each of the above embodiments. The present invention can be applied to a vehicle lamp and various other vehicle lamps.

  Hereinafter, this point will be described.

For example, as shown in FIG. 101 (a), from the vehicular lamp 10N (lens body 12N) of the twelfth embodiment to the upper incident surface 42c, that is, the wide light distribution pattern P _WIDE (see FIG. 71 (e)). The vehicular lamp 10N1 (lens body 12) in which the third optical system to be formed (see FIG. 76) is omitted.
N1) is assumed.

In this vehicular lamp 10N1, as shown in FIG. 101 (a), the light Ray _OUT from the light source 14 that spreads upward and downward does not enter the lens body 12N1, and the low beam light distribution pattern P _LO Not used to form

Therefore, the reflection surface Ref (or RefA) is arranged as shown in FIG. 101 (b) based on the idea that “the use of the light from the light source 14 is improved by adding a reflection surface”.

The reflective surface Ref (or RefA) is disposed on the upper side and the lower side of the space between the light source 14 and the first incident surface 12a so as to surround the space from the upper side and the lower side, respectively.

In the vehicular lamp 10N1 to which the reflection surface Ref (or RefA) is added as described above, as shown in FIG. 101 (b), the rear end portion of the lens body 12N1 (that is, the incident surfaces 12a, 4).
2a, 42b) light other than light that is directly incident on the inside of the lens body 12N1, that is, light from the light source 14 that spreads in the vertical direction is above and below the space between the light source 14 and the first incident surface 12a. Is reflected by the reflecting surface Ref (or RefA) disposed on the lens body 12 and enters the lens body 12N1 from the rear end portion (that is, the incident surfaces 12a, 42a, and 42b) of the lens body 12N1, and the low beam light distribution pattern P _LO ( Spot light distribution pattern P _SPOT , Mid light distribution pattern P
_{MID_L} , P _{MID_R} ).

At this time, the reflecting surface Ref (or R) that enters the lens body 12N1 from the first incident surface 12a.
The first lower reflecting surface 12b (and the shade) constituting the first optical system (see FIG. 49 (a)) in which the reflected light from efA) forms the spot light distribution pattern P _SPOT (see FIG. 71 (b)). 12c
) Is controlled below the cut-off line. Therefore, due to the reflected light from the reflecting surface Ref (or RefA) incident on the inside of the lens body 12N1 from the first incident surface 12a,
It is possible to suppress the occurrence of glare in the low beam spot light distribution pattern P _SPOT (see FIG. 71B).

Further, the reflecting surface R that enters the lens body 12N1 from the pair of left and right incident surfaces 42a and 42b.
Reflected light from ef (or RefA) is a mid light distribution pattern P _{MID_L} , P _{MID_R} (FIG. 71).
(C) (see FIG. 71 (d)) is cut by the pair of left and right second lower reflecting surfaces 48a and 48b (and shades 48c and 48d) constituting the second optical system (see FIGS. 73 and 74). Controlled below offline. Therefore, glare _occurs in the low beam mid light distribution patterns P _{MID_L} and P _{MID_R} due to the reflected light from the reflecting surface Ref (or RefA) incident on the inside of the lens body 12N1 from the pair of left and right incident surfaces 42a and 42b. Generation | occurrence | production can be suppressed.

  According to this modification, the following effects can be obtained as in the fifteenth embodiment.

That is, a light distribution pattern (a spot light distribution pattern P _SPOT , a mid light distribution pattern P _{MID_L} , P _{MID_R} ) including a light source 14 and a lens body 12N1 disposed in front of the light source 14 and including a cut-off line at the upper edge. In the vehicle lamp 10N1 configured to form:
It can suppress that light utilization efficiency falls. This is because the light from the light source 14 other than the light that directly enters the lens body 12N1 (the light Ray from the light source 14 spreading in the vertical direction).
_OUT . 101 (a)) is reflected, and the reflecting surface Ref is incident on the inside of the lens body 12N1 from the rear end portion 12A1aa (that is, the incident surfaces 12a, 42a, 42b) of the lens body 12N1.
(Or RefA).

Further, for example, in the vehicular lamp 10 of the first embodiment shown in FIG. 1 (the same applies to the vehicular lamp 10A of the second embodiment shown in FIG. 16), as shown in FIG. light Ray from spreading light source 14 _OUT is not incident on the inner lens body 12, 12A, is not used in formation of the light distribution pattern P _LO for low beam.

Therefore, the reflection surface RefB is arranged as shown in FIG. 102 (b) based on the idea that “the addition of the reflection surface improves the utilization efficiency of light from the light source 14.”

The reflection surface RefB is configured as a cylindrical reflection surface extending from the incident surface 12a side toward the rear (the light source 14 side), and is disposed so as to surround the space between the light source 14 and the incident surface 12a. .

In the vehicular lamp 10N of the first embodiment to which the reflection surface RefB is added as described above (the same applies to the vehicular lamp 10A of the second embodiment), as shown in FIG.
, Light other than light that directly enters the lens bodies 12 and 12A from the rear end portion (that is, the incident surface 12a), that is, light from the light source 14 that spreads in the vertical and horizontal directions, Is reflected by a cylindrical reflecting surface RefB disposed so as to surround a space between the lens bodies 12 and 12A and enters the lens bodies 12 and 12A from the rear ends (that is, the incident surfaces 12a), and is used for a low beam. Used to form a light distribution pattern.

At that time, an optical system in which reflected light from the reflecting surface RefB incident on the lens bodies 12 and 12A from the first incident surface 12a forms a low beam light distribution pattern (FIGS. 2A and 17A).
It is controlled below the cut-off line by the lower reflection surface 12b (and the shade 12c) constituting the reference). Therefore, it is possible to suppress the occurrence of glare in the low beam light distribution pattern due to the reflected light from the reflecting surface RefB incident on the lens bodies 12 and 12A from the incident surface 12a.

  According to this modification, the following effects can be obtained as in the fifteenth embodiment.

In other words, a vehicular lamp including a light source 14 and a lens body 12, 12 </ b> A disposed in front of the light source 14 and configured to form a light distribution pattern (low beam light distribution pattern) including a cut-off line at an upper end edge. In 10, 10A, it can suppress that light use efficiency falls. This is light other than light directly incident on the inside of the lens bodies 12 and 12A among the light from the light source 14 (light Ray _OUT from the light source 14 spreading in the vertical and horizontal directions; see FIG. 102 (a)).
This is due to the provision of the reflecting surface RefB that reflects the light from the rear end portions 12A1aa (that is, the incident surface 12a) of the lens bodies 12 and 12A and enters the lens bodies 12 and 12A.

Next, as a sixteenth embodiment, a vehicle lamp 64 (lens body 66) that forms an ADB light distribution pattern will be described with reference to the drawings.

103 is a perspective view of the vehicular lamp 64 (lens body 66), and FIG.
104 (b) is a top view, FIG. 104 (c) is a front view, FIG. 104 (d) is a left side view, FIG. 105 (a) is a right side view, and FIG. 105 (b) is a bottom view. It is. 106A and _106B are examples of ADB light distribution patterns P _{L1 to} P _L3 and P _{R1 to} P _R3 formed by the vehicular lamp 64 (lens body 66).

As shown in FIGS. 103 to 105, the vehicular lamp 64 of the present embodiment includes the light source 14 and the light source 1.
4 is a virtual vertical screen having a lens body 66 and the like disposed in front of the vehicle 4 and facing the front of the vehicle (
The ADB light distribution pattern (for example, ADB light distribution pattern P _L1 ) shown in FIG. _106A is formed on the vehicle front surface (approximately 25 m ahead).

By using a plurality of vehicle lamps 64, a variable light distribution type vehicle lamp (ADB: Adaptive Drivi
ng Beam).

For example, three vehicle lamps 64 _L1 to 64 _L3 configured to form three ADB light distribution patterns P _{L1 to} P _L3 arranged on the left side with respect to the vertical line V in FIG. ,as well as,
Three vehicle lamps 64 _R1 to 64 _R3 configured to form three ADB light distribution patterns P _{R1 to} P _R3 arranged on the right side with respect to the vertical line V are prepared. Based on the detection result of an imaging device (for example, a CCD camera) or the like that functions as a detection means for detecting an object in front of the host vehicle on which the vehicle lamps 64 _L1 to 64 _L3 and 64 _R1 to 64 _R3 are mounted. When a control device such as a CPU determines whether there is an irradiation prohibited object (for example, a preceding vehicle or an oncoming vehicle) in front of the host vehicle and determines that there is an irradiation prohibited object, the irradiation prohibited object The corresponding light source 14 is extinguished or dimmed so that the ADB light distribution pattern is not formed in the region where is present. FIG. 106 (b) is an example in which the corresponding light source 14 is turned off so that the ADB light distribution patterns P _L1 and P _R1 are not formed in the region where the irradiation prohibited target (the preceding vehicle V1 or the oncoming vehicle V2) is present. .

The ADB light distribution pattern (for example, the ADB light distribution pattern P _L1 ) disposed on the left side with respect to the vertical line V in FIG. 106A is obtained by the lens body 66 shown in each of FIGS. It is formed. On the other hand, the ADB light distribution pattern (for example, the ADB light distribution pattern P _R1 ) arranged on the right side with respect to the vertical line V in FIG. 106 (a) is the lens body shown in each of FIGS. It is formed by a lens body (not shown) having a shape in which the left and right sides of 66 are reversed. That is, the ADB light distribution pattern (for example, the ADB light distribution pattern P _L1 ) disposed on the left side with respect to the vertical line V and the ADB light distribution disposed on the right side with respect to the vertical line V. The lens body forming the pattern (for example, the ADB light distribution pattern P _R1 ) is symmetrical and has substantially the same shape. Therefore, the lens body 66 that forms the ADB light distribution pattern (for example, the ADB light distribution pattern P _L1 ) disposed on the left side with respect to the vertical line V will be described below.
The description of the lens body that forms the ADB light distribution pattern (for example, the ADB light distribution pattern P _R1 ) arranged on the right side with respect to the vertical line V is omitted.

Figure 104 (b), FIG. 104 (d), the light source 14, a rear end portion 66a near the lens body 66 in a posture with its the emission surface to the front (the reference point F ₆₆ near the optical design) Is arranged. Optical axis AX ₁₄ of the light source 14 may be coincident with the reference axis AX ₆₆ extending in the longitudinal direction of the vehicle, it may be inclined with respect to the reference axis AX _66.

The lens body 66 _L1 that forms the ADB light distribution pattern P _L1 shown in FIG.

The lens body 66 _L1 is a lens body disposed in front of the light source 14, and includes a rear end portion 66 a and a front end portion 66 b, and light from the light source 14 incident on the lens body 66 _L1 is transmitted to the front end portion 66 b.
As shown in FIG. 106 (a), an ADB light distribution pattern P _L1 including a lower cut-off line CL _66e and a vertical cut-off line CL _66f is formed by emitting from the (outgoing surface 66b1) and irradiating forward. It is configured as a lens body. The lens body 66 _L1 is injected by injecting a transparent resin such as polycarbonate or acrylic, and then cooled and solidified (by injection molding).
It is molded integrally.

The lens body 66 _L1 has an upper reflection surface 66 disposed between the rear end portion 66a and the front end portion 66b.
c and a longitudinal reflection surface 66d. The leading end portion of the upper reflecting surface 66c and the leading end portion of the longitudinal reflecting surface 66d include shades 66e and 66f, respectively.

The rear end portion 66a of the lens body 66 _L1 is incident portion AA of the light from the light source 14 is incident on the inner lens body 66 _L1, and the inner surface of the light from the lens body 66 _L1 light source 14 which enters the inside from the entrance section AA A reflection surface 66a3 for reflection (total reflection) is included.

Figure 107 (a) is a longitudinal sectional view of the lens body 66 _L1, FIG. 107 (b) is a cross-sectional view.

As shown in FIGS. 107 (a) and 107 (b), the incident portion AA extends rearward from the outer peripheral edge of the first incident surface 66a1 and the first incident surface 66a1 that are convex toward the light source 14, Light source 1
4 and a cylindrical second incident surface 66a2 surrounding the space between the first incident surface 66a1 and the first incident surface 66a1.

Reflective surface 66a3 is disposed outside of the second incident surface 66a2, a reflective surface for internal reflection (total reflection) light from the light source 14 incident from the second incident surface 66a2 inside the lens body 66 _L1.

The front end 66b of the lens body 66 _L1 includes an exit surface 66b1.

The incident portion AA (first incident surface 66a and second incident surface 66a2), the reflective surface 66a3, the upper reflective surface 66c, the longitudinal reflective surface 66d, and the front end portion 66b (exit surface 66b1) are included in the incident portion AA (first incident surface 66a). and shielding light as well as the upper reflective surface portion by the shade 66f of the second shade 66e of out on the reflecting surface 66c of the light from the lens body 66 _L1 light source 14 which enters the inside from the incident surface 66a2) and the longitudinal reflecting surface 66d 66c Then, the light internally reflected by the vertical reflection surface 66d is emitted from the front end portion 66b and irradiated forward, thereby, as shown in FIG. 106 (a), the lower edge and one side edge (FIG. 106 (a)). ) Shade 66 of upper reflection surface 66c on side edge on middle vertical line V side)
e and a cut-off line CL _66e defined by the shade 66f of the longitudinal reflecting surface 66d,
An optical system for forming a light distribution pattern P _L1 for ADB including CL _66f is configured.

Specifically, the first incident surface 66a1, the second incident surface 66a2, the reflective surface 66a3, and the upper reflective surface 6
6c, the longitudinal reflecting surface 66d and the exit surface 66b1, the light from the light source 14 incident from the first incident surface 66a1 inside the lens body 66 _L1, and the reflected incident from the second incident surface 66a2 inside the lens body 66 _L1 Of the light from the light source 14 internally reflected (totally reflected) by the surface 66a3, the upper reflecting surface 66
The light partly shielded by the shade 66e of c and the shade 66f of the longitudinal reflection surface 66d and the light internally reflected (total reflection) by the upper reflection surface 66c and the longitudinal reflection surface 66d are the exit surface 66b1.
As shown in FIG. 106 (a), the upper reflecting surface 66c is formed on the lower edge and one side edge (the side edge on the vertical line V side in FIG. 106 (a)). Cut-off _lines CL _66e and CL _66f defined by the shade 66e and the shade 66f of the longitudinal reflecting surface _66d.
Constitute the optical system for forming a light distribution pattern P _L1 for ADB including.

The exit surface 66b1 is configured as a lens surface convex forward. Output surface 66b
The first focal point F _66b1 includes a shade 66e of the upper reflecting surface 66c and a shade 66 of the longitudinal reflecting surface 66d.
It is located near the intersection of f (see FIGS. 107 (a) and 107 (b)). Output surface 66b1
The optical axis AX _66b1 coincides with a reference axis AX ₆₆ extending in the vehicle longitudinal direction.

The first incident surface 66a1 is the surface through which the light from the light source 14 is incident on the inner lens body 66 _L1 is refracted, the surface of the curved convex toward the light source 14 (e.g., free-form surface) is constructed as a.
Specifically, the first incident surface 66a1, the light from the light source 14 incident from the first incident surface 66a1 inside the lens body 66 _L1 is directed to the vertical and horizontal directions, the focal point F ₆₆ of the exit surface 66b1
The surface shape is configured so as to condense near _b1 (see FIGS. 107 (a) and 107 (b)). Of course, the present invention is not limited to this, and the first incident surface 66a1 is not limited to the first incident surface 66a1.
The light from the light source 14 incident on the inside of the lens body 66 _L1 from the vertical direction and the horizontal direction,
The surface shape may be configured to be collimated.

Second incident surface 66a2 is a plane light which is not incident on the first incident surface 66a1 enters inside the lens body 66 _L1 is refracted out of the light from the light source 14, rearward from the outer peripheral edge of the first incident surface 66a1 And is configured as a cylindrical surface (for example, a free-form surface) that surrounds the space between the light source 14 and the first incident surface 66a1.

Reflective surface 66a3 is disposed outside of the second incident surface 66a2, in terms of internal reflection light (total reflection) from the second incident surface 66a2 lens body 66 _L1 light source 14 which enters the inside from the metal deposition using Not. Specifically, the reflecting surface 66a3 extends from the second incident surface 66a2 to the lens body 66.
_The light from the light source 14 that has entered the inside of _{L1 and is} internally reflected (totally reflected) by the reflecting surface 66a3,
With respect to the vertical direction and the horizontal direction, the light is condensed near the focal point F _66b1 of the emission surface 66b1 (FIG. 107 (
As shown in a) and FIG. 107 (b), the surface shape is configured. Of course, the light is not limited to this, and the light from the light source 14 that is internally reflected by the reflection surface 66a3 is reflected on the reflection surface 66a3.
The surface shape may be configured so as to be collimated with respect to the vertical direction and the horizontal direction.

The shade 66e of the upper reflecting surface 66c and the shade 66f of the longitudinal reflecting surface 66d are the reference axis AX.
Included in a plane perpendicular to ₆₆ . The cross section of the lens body 66 _L1 by the plane is the upper reflecting surface 6.
It has a substantially rectangular cross-sectional shape including the shade 66e (edge) 6c and the shade 66f (edge) of the longitudinal reflection surface 66d.

The upper reflection surface 66c folds the light from the light source 14 that is internally reflected (total reflection) by the upper reflection surface 66c with the lower cut-off line CL _66e defined by the shade 66e of the upper reflection surface 66c as a boundary. The reflection surface is configured to be superimposed on the light distribution pattern P _L1 . Specifically, the upper reflection surface 66c is such that the reflected light from the upper reflection surface 66c is lower cut-off line C.
The control surface is configured as a reflection surface having a planar shape that is inclined in a direction away from the reference axis AX ₆₆ toward the rear from the shade 66e of the upper reflection surface 66c so as to be controlled above L _66e (FIG. 104D). reference).

On the reflecting surface 66c is a reflecting surface that totally reflects the light incident on the on the reflecting surface 66c of the light from the lens body 66 _L1 light source 14 incident on the inside, metal deposition is not used. Lens body 66 _L1
Of the light from the light source 14 incident on the inside, the light incident on the upper reflecting surface 66c is the upper reflecting surface 6c.
6c is internally reflected (totally reflected) toward the exit surface 66b1, refracted by the exit surface 66b1, and A
It goes to the area (predetermined area) where the DB light distribution pattern P _L1 is to be formed. That is, the reflected light that has been internally reflected (totally reflected) by the upper reflecting surface 66c is folded back at the lower cut-off line CL _66e and superimposed on the ADB light distribution pattern P _L1 .

According to the upper reflection surface 66c having the above configuration, first, the lower cutoff line CL _66e formed at the lower end edge of the ADB light distribution pattern P _L1 can be made clear. Second, ADB
It is possible to suppress the light distribution from the light source 14 in an unnecessary range as the light distribution pattern for use, that is, below the lower cutoff line CL _66e . Third, ADB light distribution pattern P
The luminous intensity of _L1 , in particular, the luminous intensity near the lower cutoff line CL _66e can be made higher.
This is because the light from the light source 14 that has entered the lens body 66 _L1 is condensed near the focal point F _66b1 of the emission surface 66b1 in the vertical and horizontal directions (see FIGS. 107 (a) and 107 (b)). ) And the reflected light that has been internally reflected (totally reflected) by the upper reflecting surface 66c is folded back at the lower cutoff line CL _66e and superimposed on the ADB light distribution pattern P _L1 .

The vertical reflection surface 66d folds the light from the light source 14 that is internally reflected (total reflection) by the vertical reflection surface 66d back to the vertical cutoff line CL _66f defined by the shade 66f of the vertical reflection surface 66d. The reflection surface is configured to be superimposed on the light distribution pattern P _L1 . Specifically, the vertical reflection surface 66d is configured such that the reflected light from the vertical reflection surface 66d is a vertical cutoff line C.
It is configured as a reflection surface having a planar shape that is inclined in a direction away from the reference axis AX _{66 as} it goes rearward from the shade 66f of the longitudinal reflection surface 66d so as to be controlled to the left of L _66f (FIG. 104B). reference).

Vertical reflective surface 66d is a reflection surface for totally reflecting the light incident on the vertical reflecting surface 66d of the light from the lens body 66 _L1 light source 14 incident on the inside, metal deposition is not used. Lens body 66 _L1
Of the light from the light source 14 incident on the inside, the light incident on the longitudinal reflection surface 66d is reflected by the longitudinal reflection surface 6d.
6d is internally reflected (totally reflected) toward the exit surface 66b1, refracted by the exit surface 66b1, and A
It goes to the area (predetermined area) where the DB light distribution pattern P _L1 is to be formed. That is, the reflected light that has been internally reflected (totally reflected) by the vertical reflection surface 66d is folded back at the vertical cut-off line CL _66f and superimposed on the ADB light distribution pattern P _L1 .

According to the vertical reflection surface 66d configured as described above, first, the vertical cut-off line CL formed on one side edge (the side edge on the vertical line V side in FIG. 106A) of the ADB light distribution pattern P _L1 . _66f can be clear. Second, it is possible to suppress light from the light source 14 from being distributed to an unnecessary range as the ADB light distribution pattern, that is, from the vertical cutoff line CL _66f to the vertical line V side. As a result, the object of irradiation prohibition in front of the host vehicle (for example, preceding car or oncoming car)
The occurrence of glare against can be effectively suppressed. Third, the luminous intensity of the ADB light distribution pattern P _L1 , particularly, the luminous intensity near the vertical cutoff line CL _66f can be further increased. This is because the light from the light source 14 that has entered the lens body 66 _L1 is condensed near the focal point F _66b1 of the emission surface 66b1 in the vertical and horizontal directions (FIGS. _{107A and 107B} ).
And the reflected light that has been internally reflected (totally reflected) by the vertical reflection surface 66d is folded back at the vertical cut-off line CL _66f and superimposed on the ADB light distribution pattern P _L1 .

As shown in FIGS. 104 (b) and 104 (d), a plane-shaped surface 66 extending generally in the horizontal direction is provided between the leading edge (shade 66e) of the upper reflecting surface 66c and the upper end edge of the emitting surface 66b1.
g (a connecting surface whose optical function is not intended) is formed. Further, the upper reflection surface 66
The planar surface 66h (optical function) is inclined between the rear edge of c and the upper edge of the reflective surface 66a3 so as to move away from the reference axis AX ₆₆ toward the rear from the rear edge of the upper reflective surface 66c. The connecting surface is not intended to be formed.

In addition, a plane shape between the front edge (shade 66f) of the vertical reflection surface 66d and the left edge of the emission surface 66b1 is inclined in a direction approaching the reference axis AX ₆₆ from the left edge of the emission surface 66b1 toward the rear. A surface 66i (a connecting surface where an optical function is not intended) is formed. Further, between the rear end edge of the vertical reflection surface 66d and the left edge of the reflection surface 66a3, the vertical reflection surface 66d is provided.
A planar surface 66j (a connecting surface not intended for an optical function) that is inclined in a direction away from the reference axis AX _{66 as} it goes rearward from the rear end edge is formed.

Further, between the right edge of the emission surface 66b1 and the right edge of the reflection surface 66a3, the emission surface 66b1 is provided.
Planar surface 6 inclined in a direction approaching the reference axis AX ₆₆ as it goes rearward from the right edge of
6k (a connecting surface where an optical function is not intended) is formed.

Further, the lower surface 66m of the lens body 66 _L1 is also formed in the surface of the planar shape extending generally in a horizontal direction (the plane of the joint that optical function is not intended).

Of course, the present invention is not limited to this, and the surface of each connecting portion may have a curved surface shape other than the planar shape.

With the lens body 66 _{L1 having the} above-described configuration, A shown in FIG.
A DB light distribution pattern P _L1 is formed.

The lower end portion of the ADB light distribution pattern P _L1 shown in FIG. 106A is positioned below the horizontal line H so that the lower end portion of the ADB light distribution pattern P _L1 is positioned below the horizontal line H. ,
Positional relationship between the focal point F _66b1 and the upper reflection surface 66c of the exit surface 66b1, the inclination of the reference axis AX ₆₂ and /
Or it is because the surface shape of the output surface 66b1 is adjusted.

Of course, not limited to this, by adjusting the surface shape of the slope and / or exit surface 66b1 of the positional relationship, the reference axis AX ₆₂ of the upper reflecting surface 66c and the focus F _66b1 of the exit surface 66b1, ADB at appropriate positions The light distribution pattern P _L1 for use can be formed. For example, each ADB light distribution pattern may be formed such that its lower end is positioned on the horizontal line H as shown in FIG.

The ADB light distribution pattern P other than the ADB light distribution pattern P _L1 shown in FIG.
_The lens bodies 66 _{L2 and L3} forming _L2 and P _L3 have the surface shape of the respective emission surfaces 66b1 and / or the shade 66e (edge) of the upper reflection surface 66c and the shade 66f (edge) of the vertical reflection surface 66d. It can be configured by adjusting the substantially rectangular cross-sectional shape (or size).

According to the present embodiment, the following effects can be achieved by the action of the upper reflection surface 66c and the vertical reflection surface 66d.

First, the shade 66e and the longitudinal reflection surface 66d of the upper reflection surface 66c are arranged at the lower end edge and one side edge.
The ADB light distribution pattern P _L1 including the cut-off line (the lower cut-off line CL _66e and the vertical cut-off line CL _66f ) defined by the shade 66f can be formed.

Second, the lower cut-off line CL _66e formed at the lower edge of the ADB light distribution pattern P _L1
And the vertical cut-off line CL _66f formed on one side edge can be made clear.

Third, it is possible to suppress the light distribution from the light source in an unnecessary range as the ADB light distribution pattern, that is, below the lower cutoff line. Similarly, light distribution from the light source 14 on the vertical line V side from the vertical cutoff line CL _66f can be suppressed. As a result, it is possible to effectively suppress the occurrence of glare with respect to the irradiation prohibited object (for example, the preceding vehicle or the oncoming vehicle) in front of the host vehicle.

Fourth, even if the relative positional relationship of the lens body 66 with respect to the light source 14 deviates from the design value due to the effects of assembly errors, the lower cutoff line CL of the ADB light distribution pattern P _{L1.
The shift of 66e} and the vertical cut-off line CL _66f can be suppressed.

Next, a vehicle lamp 74 (lens body 76) according to a seventeenth embodiment will be described with reference to the drawings.

  The vehicular lamp 74 (lens body 76) of the present embodiment is configured as follows.

109 is a perspective view of the vehicular lamp 74 (lens body 76), FIG. 110 (a) is a rear view, and FIG.
10 (b) is a front view, FIG. 110 (c) is a bottom view, and FIG. 110 (d) is a right side view.

As shown in FIGS. 109 and 110, the vehicular lamp 74 (lens body 76) of the present embodiment is
This corresponds to the vehicle lamp 10N (lens body 12N) of the twelfth embodiment shown in FIG. 69 and the vehicle lamp 64 (lens body 66) of the sixteenth embodiment shown in FIG.

Hereinafter, the lens body 12N is referred to as a first lens portion 12N, and the lens body 66 is referred to as a second lens portion 66.
Called.

As shown in FIGS. 110 (a) and 110 (d), the lens body 74 includes the first lens unit 12.
N, the second lens unit 66 _L1, and a lens body including a connecting portion 68 which is connected to the first lens portion 12N and the second lens unit 66 _L1, was injected polycarbonate or transparent resin such as acrylic, cooled, and solidified Are integrally formed (by injection molding). That is, the lens portions 12N and 66 _L1 are integrally formed and are connected to each other without an interface.

FIG. 111 shows an example of a low beam light distribution pattern P _Lo formed by the first lens portion 12N, an ADB light distribution pattern P _{L1 to} P _L3 , and P _{R1 to} P _R3 formed by the second lens portion 66 and the like. is there. As shown in FIG. 111, the ADB light distribution patterns P _{L1 to} P _L3 and P _{R1 to} P _R3 are arranged in the horizontal direction in such a manner that the lower ends thereof partially overlap the upper portions of the low beam light distribution patterns P _Lo. ing. Of course, the present invention is not limited to this, and the ADB light distribution patterns P _{L1 to} P _L3 and P _{R1 to} P _R3 are arranged in the horizontal direction in such a manner that the lower ends thereof do not overlap the upper portions of the low beam light distribution patterns P _Lo. May be.

The first lens unit 12N has the same configuration as the lens body 12N shown in FIG. That is,
As shown in FIG. 110A and the like, the first lens unit 12N is a lens unit disposed in front of the first light source 14 _Lo , and includes a rear end portion 12A1aa and a front end portion 12A2bb. The light from the first light source 14 _Lo incident on the inside of 12N is the front end portion 12A of the first lens portion 12N.
As shown in FIG. 111, it is configured as a lens unit that forms a low beam light distribution pattern P _Lo including a cut-off line CL _Lo at the upper end edge by being emitted from 2bb (second emission surface 12A2b) and irradiated forward. Has been. The low beam light distribution pattern P _Lo including the cut-off line CL _Lo at the upper edge corresponds to the “first light distribution pattern including the first cut-off line” of the present invention.

The second lens portion 66 _L1 has the same configuration as the lens body 66 _L1 shown in FIG. That is, as shown in FIG. _110A and the like, the second lens portion 66 _L1 is a lens portion that is disposed in front of the second light source 14 _ADB , and includes a rear end portion 66a and a front end portion 66b. 2 lens part 66 _L1
As shown in FIG. 111, the light from the second light source 14 _ADB incident on the inside is emitted from the front end portion 66b (exit surface 66b1) and irradiated forward, thereby lower cut-off line CL _66e.
And a lens portion for forming the ADB light distribution pattern P _L1 including the vertical cutoff line CL _66f . The ADB light distribution pattern P _L1 including the lower cut-off line CL _66e and the vertical cut-off line CL _66f corresponds to the “second light distribution pattern including the second cut-off line” of the present invention.

The first lens portion 12N and the second lens portion 66 _L1 are provided with a low beam light distribution pattern P _Lo (cut-off line CL _Lo ) and an ADB light distribution pattern _{L 1} (cut-off _lines CL _66e and CL _66f ).
Are integrally molded in a positioned state so that the relative positional relationship between the two and the second lens becomes a predetermined positional relationship (see, for example, FIG. 111).

The first lens portion 12N and the second lens portion 66 _L1 are connected by a connecting portion 68.
Of course, not limited to this, the first lens unit 12N and the second lens unit 66 _L1 may be directly coupled.

Connecting portion 68 couples the locations optical function of the location and the second lens unit 66 _L1 which optical function is not intended it is not intended in the first lens unit 12N. In particular,
110 (a) and 110 (d), the connecting portion 68 includes a lower surface of the first lens portion 12N, a rear edge of the upper reflecting surface 66c of the second lens portion 66 _L1 , and an upper end of the reflecting surface 66a3. A surface 66g (see FIG. 103) formed between the edges is connected. Of course, not limited to this, the connecting portion 68, the lower surface except the surface of the first lens unit 12N (e.g., side) and a surface other than the surface 66g of the second lens unit 66 _L1 (e.g., surface 66h, surface 66i, surface 66j, at least one of the surface 66k and the lower surface 66m) may be connected. In addition, the first lens unit 12N and the second lens unit 6
6 _L1 does not depend on the connecting portion 68, and the optical portion of the first lens portion 12N where the optical function is not intended (for example, the lower surface of the first lens portion 12N) and the second lens portion 66 _L1. The part (for example, the surface 66g) where the function is not intended may be directly connected to be integrally formed.

According to the present embodiment, in addition to the effects of the sixteenth embodiment, the following effects can be further achieved.

That is, the first lens portion 12N and the cutoff line (for example, the lower cutoff line CL _66e) that form the low beam distribution pattern P _Lo including the cutoff line CL _Lo at the upper edge.
In the lens body 76 having the second lens portion 66 _L1 that forms the ADB light distribution pattern P _L1 including the vertical cut-off line CL _66f ), the low-beam light distribution pattern P _Lo (cut-off line CL _Lo ) and the ADB distribution It is possible to provide a lens body in which the relative positional relationship between the light patterns P _L1 (cut-off _lines CL _66e and CL _66f ) does not shift with time. As a result, the aiming adjustment mechanism and the correction of the relative positional relationship between the low beam light distribution pattern P _Lo and the ADB light distribution pattern P _L1 by the aiming adjustment mechanism are not required.

This is because the relative positional relationship between the low beam light distribution pattern P _Lo (cut-off line CL _Lo ) and the ADB light distribution pattern P _L1 (cut off _lines CL _66e , CL _66f ) is determined in advance. This is because the first lens portion 12N and the second lens portion 66 _L1 are integrally molded in a positioned state.

As described above, “the first lens part forming the first light distribution pattern including the first cutoff line and the second lens part forming the second light distribution pattern including the second cutoff line are the first light distribution pattern. The concept of “integral molding so that the relative positional relationship between the (first cutoff line) and the second light distribution pattern (second cutoff line) is a predetermined positional relationship” is shown in FIG. A vehicle lamp 10N (lens body 12N) of the twelfth embodiment shown in FIG.
Not only the vehicle lamp 64 (lens body 66) of the sixteenth embodiment shown in FIG. 3, but also the vehicle lamp (lens body) described in the above embodiments and various other vehicle lamps (lens body) other than that. Can be applied to.

For example, instead of the lens body 12N of the twelfth embodiment shown in FIG. 69, the lens body 12 of the first embodiment shown in FIG. 1 and the lens body 12A of the second embodiment shown in FIG.
The lens body 12J of the tenth embodiment shown in FIG. 46, the lens body 12K of the eleventh embodiment shown in FIG. 56, or the lens body 66 of the sixteenth embodiment shown in FIG.
This is because each of these lens bodies is a first lens portion that forms a first light distribution pattern including a first cutoff line.

For example, instead of the lens body 66 of the sixteenth embodiment shown in FIG. 103, the lens body 12 of the first embodiment shown in FIG. 1 and the lens body 1 of the second embodiment shown in FIG.
2A, the lens body 12J of the tenth embodiment shown in FIG. 46, the lens body 12K of the eleventh embodiment shown in FIG. 56, or the lens body 12N of the twelfth embodiment shown in FIG. This is because all of these lens bodies are the second lens portions that form the second light distribution pattern including the second cutoff line.

Next, a vehicular lamp 10Q (lens body 12Q) according to an eighteenth embodiment will be described with reference to the drawings.

  The vehicular lamp 10Q (lens body 12Q) of the present embodiment is configured as follows.

112 is a perspective view of the vehicular lamp 10Q (lens body 12Q) (only the main optical surface), FIG.
3 (a) is a side view (only the main optical surface), FIG. 113 (b) is a top view (only the main optical surface), FIG. 114 (a) is a front view (only the main optical surface), and FIG. 114 (b) is Rear view (only main optical surface)
It is.

As shown in FIGS. 112 to 114, the vehicular lamp 10Q (lens body 12Q) of the present embodiment.
Corresponds to a configuration in which the final emission surface (second emission surface 12A2b) of the vehicular lamp 10A (lens body 12A) of the second embodiment shown in FIG.

When the vehicular lamp 10Q of the present embodiment and the vehicular lamp 10A of the second embodiment are compared, they are mainly different in the following points.

First, in the vehicular lamp 10A of the second embodiment, the final emission surface (the second emission surface 1).
2A2b) is configured as a semi-cylindrical surface (cylindrical surface) and is in charge of light collection in the vertical direction, in the vehicular lamp 10Q of the present embodiment, the final emission surface (
The second emission surface 12A2b) is configured as a planar surface and is not in charge of (or hardly in charge of) vertical light collection.

Secondly, in the vehicular lamp 10A of the second embodiment, the first intermediate exit surface (first exit surface 12A1a) and the intermediate entrance surface (second entrance surface 12A2a) each have a curvature in the vertical direction. In the vehicular lamp 10Q according to the present embodiment, it is not in charge (see FIG. 17 (a), etc.) and is not in charge of (or almost in charge of) the light in the vertical direction. At least one of the intermediate exit surface (first exit surface 12A1a) and the intermediate entrance surface (second entrance surface 12A2a) is given a curvature in the vertical direction (see FIG. 113 (a)), and the light is collected in the vertical direction. The point that is in charge of.

Other than that, it is the structure similar to 10A of vehicle lamps of the said 2nd Embodiment. Hereinafter, the second
Differences from the vehicular lamp 10A of the embodiment will be mainly described, and the same components as those of the vehicular lamp 10A of the second embodiment will be denoted by the same reference numerals and description thereof will be omitted.

As shown in FIGS. 112 to 114, the vehicular lamp 10Q of the present embodiment is similar to the vehicular lamp 10A of the second embodiment, and includes a light source 14 and a first lens portion 12A disposed in front of the light source 14.
1 and a second lens portion 12A2 disposed in front of the first lens portion 12A1, and the light from the light source 14 passes through the first lens portion 12A1 and the second lens portion 12A2 in this order and forwards. By being irradiated, a low beam light distribution pattern including a cut-off line at the upper end edge is formed.

The first lens unit 12A1 and the second lens unit 12A2 of the present embodiment have the same configurations as the first lens unit 12A1 and the second lens unit 12A2 of the second embodiment, respectively.

That is, the first lens portion 12A1 of the present embodiment is the rear end portion 12 of the first lens portion 12A1.
The lower reflective surface 12b arrange | positioned between A1aa and front-end part 12A1bb is provided. The tip of the lower reflecting surface 12b includes a shade 12c. Rear end portion 12 of the first lens portion 12A1
A1aa includes the first incident surface 12a. Front end portion 12A1b of the first lens portion 12A1
b includes the first intermediate emission surface (first emission surface 12A1a). The rear end portion 12A2aa of the second lens portion 12A2 includes an intermediate incident surface (second incident surface 12A2a). The front end portion 12A2bb of the second lens portion 12A2 includes a final emission surface (second emission surface 12A2b).

The first lens portion 12A1 and the second lens portion 12A2 are connected to the connecting portion 1 as shown in FIG.
It may be configured as a lens body connected by 2A3, or may be configured as a lens body connected by a holding member 18 such as a lens holder, as shown in FIG.

As shown in FIG. 115, the first incident surface 12a, the lower reflecting surface 12b, the first intermediate exit surface (first exit surface 12A1a), the intermediate entrance surface (second entrance surface 12A2a), and the final exit surface (second exit surface). 1
2A2b) is a part of the light from the light source 14 that has entered the first lens unit 12A1 from the first incident surface 12a and is partially shielded by the shade 12c of the lower reflective surface 12b, and the lower reflective surface 12.
The light internally reflected (totally reflected) by b is first from the first intermediate emission surface (first emission surface 12A1a).
The light is emitted to the outside of the lens unit 12A1, and further from the intermediate incident surface (second incident surface 12A2a) to the second.
By entering the lens portion 12A2 and exiting from the final exit surface (second exit surface 12A2b) and irradiating forward, the first upper edge includes a cut-off line defined by the shade 12c of the lower reflective surface 12b. A first optical system for forming a light distribution pattern (for example, a low beam light distribution pattern) is configured.

The final emission surface (second emission surface 12A2b) is given a camber angle θ1 (FIG. 113B).
)) And extending in the horizontal direction (see FIG. 114A) as a plane having a planar shape (for example, a rectangular planar shape). Of course, not limited to this, the final emission surface (second
The emission surface 12A2b) may be configured as a planar surface with a slant angle θ2 as shown in FIG. 36, or a planar surface with a camber angle θ1 and a slant angle θ2. It may be configured as.

Further, as shown in FIG. 116 (a), the final emission surface (second emission surface 12A2b) is a planar surface to which the camber angle θ1 and the slant angle θ2 are not given, that is, orthogonal to the first reference axis AX1. In addition, it may be configured as a plane having a planar shape extending in the horizontal direction (for example, a rectangular planar shape). Further, the final emission surface (second emission surface 12A2b) is as shown in FIG.
As shown in FIG. 6 (b), it may be arranged in a posture inclined obliquely upward and rearward so that the lower end edge is positioned forward with respect to the upper end edge, and further, the camber angle and / or the slant angle. May be given. Conversely, the final emission surface (second emission surface 12A2b) may be arranged in a posture inclined obliquely downward and rearward so that the upper edge thereof is located in front of the lower edge, and further, the camber. An angle and / or a slant angle may be provided.

When the camber angle is given, the first intermediate exit surface (first exit surface 12A1a) and the intermediate entrance surface (second entrance surface 12A2a) in the low beam light distribution pattern as in the fifth embodiment.
The side where the distance between the two becomes wider is blurred without condensing. The blur that occurs with the provision of the camber angle can be improved by the method described in the fifth embodiment.

Further, when the slant angle is given, the low beam light distribution pattern is rotated (or can be said to be blurred) as in the sixth embodiment. The rotation generated with the application of the slant angle can be suppressed by the method described in the sixth embodiment.

The final emission surface (second emission surface 12A2b) may be a plane surface, and the first reference axis AX
1 is not limited to a flat surface orthogonal to 1 (see FIG. 116 (a)), and may be configured as a slightly convex surface (see FIG. 116 (c)) toward the front, and conversely toward the rear. May be configured as a slightly convex surface. The final emission surface (second emission surface 12A2b) is configured as a slightly convex surface (see FIG. 116 (c)) toward the front, thereby enhancing the flat feeling.

At least one of the first intermediate exit surface (first exit surface 12A1a) and the intermediate entrance surface (second entrance surface 12A2a) is light from the light source 14 that exits from the final exit surface (second exit surface 12A2b) (exactly Is configured so that the light from the reference point F becomes collimated light (light rays parallel to the first reference axis AX1) in the vertical direction (FIG. 115).
reference).

The light from the light source 14 (exactly, the light from the reference point F) emitted from the final emission surface (second emission surface 12A2b) is collimated in the vertical direction (parallel to the first reference axis AX1). First intermediate exit surface (first exit surface 12A1a) and / or intermediate entrance surface (second light).
The incident surface 12A2a) (conditions of each surface shape and the like) varies depending on conditions such as a slant angle and / or a camber angle, and is difficult to express with specific numerical values.

However, for example, by using predetermined simulation software, the surface shape of the first intermediate exit surface (first exit surface 12A1a) and / or the intermediate entrance surface (second entrance surface 12A2a) is gradually changed (adjusted), By confirming the optical path of the light from the light source 14 (exactly, the light from the reference point F) emitted from the final emission surface (second emission surface 12A2b) every time the change is made, the final emission surface (second emission surface) is confirmed. 12A2b), the light from the light source 14 (more precisely, the light from the reference point F) is collimated with respect to the vertical direction (light rays parallel to the first reference axis AX1).
The first intermediate exit surface (first exit surface 12A1a) and / or the intermediate entrance surface (second entrance surface 12)
A2a) (conditions such as the respective surface shapes) can be found.

According to the vehicle lamp 10Q (lens body 12Q) of the present embodiment, in addition to the effects of the second embodiment, the following effects can be further achieved.

First, it is possible to provide a lens body 12Q having a sense of unity extending in a line shape in a predetermined direction and a vehicular lamp 10Q including the lens body 12Q. This is the final exit surface (second exit surface 12
This is because A2b) is configured as a planar surface.

Secondly, the lens body 12Q capable of forming a light distribution pattern for low beam condensed in the horizontal direction and the vertical direction even though the final emission surface (second emission surface 12A2b) has a planar shape, and the lens body 12Q. The provided vehicle lamp 10Q can be provided. This is mainly due to the first intermediate exit surface (first exit surface 12A1a) of the first lens portion 12A1 for the horizontal focusing.
This is due to the fact that at least one of the first intermediate exit surface (first exit surface 12A1a) and the intermediate entrance surface (second entrance surface 12A2a) is mainly responsible for condensing light in the vertical direction.

Third, the vertical dimension H1 (see FIG. 117 (a)) of the final emission surface (second emission surface 12A2b) is the vertical dimension H2 of the final emission surface (second emission surface 12A2b) of the second embodiment. FIG.
17 (b)) can be shortened. As a result, the lens body 12Q can be reduced in size.

The vertical dimension H1 of the final emission surface (second emission surface 12A2b) can be made shorter than the vertical dimension H2 of the final emission surface (second emission surface 12A2b) of the second embodiment. In addition, in the second embodiment, as shown in FIG. 117 (b), the first intermediate exit surface (first exit surface 12A1a) and the intermediate entrance surface (second entrance surface 12A2a) each have a curvature in the vertical direction. As a result, the spread in the vertical direction of the light exiting from the focus F _12A4 (or the reference point corresponding to the focus F _12A4 ) and exiting from the first intermediate exit surface (first exit surface 12A1a) becomes relatively large. On the other hand, in the present embodiment, as shown in FIG.
Since the intermediate exit surface (first exit surface 12A1a) and / or the intermediate entrance surface (second entrance surface 12A2a) have a curvature in the vertical direction, the focal point F _12A4 (or a reference point corresponding to the focal point F _12A4 ) is used. The spread in the vertical direction of the light exiting from the first intermediate exit surface (first exit surface 12A1a) is relatively small, and secondly, in the second embodiment, FIG. 117 (b)
As shown in FIG. 4, when the light emitted from the focal point F _12A4 (or the reference point corresponding to the focal point F _12A4 ) is emitted from the final emission surface (second emission surface 12A2b), it is collimated, and the intermediate incidence surface (second incidence surface). whereas spread with respect to the vertical direction between the surface 12A2a) the final exit surface (second exit surface 12A2b), in the present embodiment, as shown in FIG. 117 (a), the focal point F _12A4 (or focus F _The light emitted from the reference point corresponding to _12A4 is second from the intermediate incident surface (second incident surface 12A2a).
When the light enters the lens portion 12A2, the light is collimated and an intermediate incident surface (second incident surface 12A2).
a) and not extending in the vertical direction between the final exit surface (second exit surface 12A2b),
Is due to.

Fourth, while maintaining the vertical dimension H1 of the final exit surface (second exit surface 12A2b), the dimension of the second lens portion 12A2 in the first reference axis AX1 direction, that is, the intermediate entrance surface (second entrance surface 1).
2A2a) and the distance L (see FIG. 117 (a)) between the final emission surface (second emission surface 12A2b) can be made relatively long. That is, the lens body 12Q having a new appearance with a relatively long distance L between the intermediate incident surface (second incident surface 12A2a) and the final emission surface (second emission surface 12A2b) and the vehicle lamp 10Q including the lens body 12Q are provided. Can be provided. This is the focus F ₁₂
Light emitted from _A4 (or a reference point corresponding to the focal point _F12A4 ) is an intermediate incident surface (second incident surface 12A2a).
) And the final exit surface (second exit surface 12A2b) (see FIG. 11).
7 (a)).

Fifth, the intermediate entrance surface (second entrance surface 12A2a) and the final exit surface (second exit surface 12A2b)
Designs such as letters, symbols and / or figures expressed by embossing or engraving can be applied to the upper surface and / or side surface between the two and a seal or plate on which the design is formed is affixed. Can be attached. That is, the intermediate entrance surface (second entrance surface 12A2a) and the final exit surface (
Designs such as letters, symbols and / or figures expressed by embossing or engraving on the upper surface and / or side surface between the second emission surface 12A2b) (or a seal or plate on which the design is formed) Etc.) A new-looking lens body 12Q and a vehicular lamp 1 including the lens body 12Q
0Q can be provided. This is because the distance L between the intermediate entrance surface (second entrance surface 12A2a) and the final exit surface (second exit surface 12A2b) can be relatively long, so the intermediate entrance surface (second entrance surface 12A2a). ) And the final exit surface (second exit surface 12A2b), sufficient space (upper surface and / or side surface) to provide a design such as characters, symbols and / or figures expressed by embossing or engraving This is because it can be secured.

As described above, the idea that “the final emission surface (second emission surface 12A2b) is configured as a planar surface” is not limited to the vehicular lamp 10A of the second embodiment, and the vehicle described in each of the above embodiments. The present invention can be applied to a lighting fixture and various other vehicle lighting fixtures.

  Hereinafter, this point will be described.

For example, the idea that “the final emission surface (second emission surface 12A2b) is configured as a plane surface” can be applied to the vehicular lamp 10J (lens body 12J) of the tenth embodiment shown in FIG. .

In this case, in the first optical system (see FIG. _49A ) for forming the spot light distribution pattern P _SPOT (see FIG. _48B ), as in the eighteenth embodiment, the first intermediate emission surface (first At least one of the first exit surface 12A1a) and the intermediate entrance surface (second entrance surface 12A2a) is light from the light source 14 that is emitted from the final exit surface (second exit surface 12A2b) (more precisely, from the reference point F). The surface shape is configured so that the light is collimated light (light rays parallel to the first reference axis AX1) in the vertical direction.

Further, the second optical system (FIG. 4) for forming the mid light distribution pattern P _MID (see FIG. _48C ).
9 (b)), as in the eighteenth embodiment, at least one of the pair of left and right second intermediate exit surfaces (the pair of left and right exit surfaces 46a and 46b) and the intermediate entrance surface (second entrance surface 12A2a) is The surface shape is configured so that light from the light source 14 emitted from the final emission surface (second emission surface 12A2b) becomes collimated light in the vertical direction. For example, in the pair of left and right second intermediate exit surfaces 46a and 46b (and / or the intermediate entrance surface 12A2a), the light from the light source 14 that exits from the final exit surface (second exit surface 12A2b) is collimated in the vertical direction. As shown in FIG. 118, it is configured as a surface to which a curvature is imparted.

  Also according to the present modification, the same effects as those in the eighteenth embodiment can be obtained.

Note that the lens body of this modification example is similar to the first lens unit 12A1 and the second lens unit as shown in FIG.
The lens portion 12A2 may be molded in a physically separated state and connected (held) by a holding member 18 such as a lens holder.

In this modification as well, the intermediate incident surface (second incident surface 12A2a) and the final emission surface (second
Designs such as letters, symbols and / or figures expressed by embossing or engraving can be applied to the upper surface 44d (see FIG. 119 (a)) and / or side surfaces between the light exit surface 12A2b) A seal or a plate (for example, a transparent seal or a transparent plate) on which the design is formed can be attached.

Also, for example, “the final emission surface (second emission surface 12A2b) is configured as a planar surface”
The third idea is to form the upper incident surface 42c, that is, the wide light distribution pattern P _WIDE (see FIG. 48D) from the vehicular lamp 10J (lens body 12J) of the tenth embodiment shown in FIG. The present invention can also be applied to a vehicular lamp (lens body) in which the optical system (see FIG. 49C) is omitted.

Also, for example, “the final emission surface (second emission surface 12A2b) is configured as a planar surface”
This concept can also be applied to the vehicular lamp 10N (lens body 12N) of the twelfth embodiment shown in FIG.

In this case, in the first optical system (see FIG. _49A ) for forming the spot light distribution pattern P _SPOT (see FIG. _71B ), as in the eighteenth embodiment, the first intermediate emission surface (first At least one of the first exit surface 12A1a) and the intermediate entrance surface (second entrance surface 12A2a) is light from the light source 14 that is emitted from the final exit surface (second exit surface 12A2b) (more precisely, from the reference point F). The surface shape is configured so that the light is collimated light (light rays parallel to the first reference axis AX1) in the vertical direction.

_Further , in the second optical system (see FIGS. 73 and 74) forming the mid light distribution patterns P _{MID_L} and P _{MID_R} (see FIGS. 71 (c) and 71 (d)), the same as in the eighteenth embodiment. , A pair of left and right second intermediate exit surfaces (a pair of left and right exit surfaces 46a and 46b) and an intermediate entrance surface (second entrance surface 1).
At least one of 2A2a) is configured so that light from the light source 14 emitted from the final emission surface (second emission surface 12A2b) becomes collimated light in the vertical direction. For example, in the pair of left and right second intermediate exit surfaces 46a and 46b (and / or the intermediate entrance surface 12A2a), the light from the light source 14 emitted from the final exit surface (second exit surface 12A2b) is collimated in the vertical direction. As shown in FIG. 118, it is configured as a surface to which a curvature is imparted.

  Also according to the present modification, the same effects as those in the eighteenth embodiment can be obtained.

Note that the lens body of this modification example is similar to the first lens unit 12A1 and the second lens unit as shown in FIG.
The lens portion 12A2 may be molded in a physically separated state and connected (held) by a holding member 18 such as a lens holder.

In this modification as well, the intermediate incident surface (second incident surface 12A2a) and the final emission surface (second
Designs such as characters, symbols and / or figures expressed by embossing or engraving can be applied to the upper surface 44Nc (see FIG. 119 (b)) and / or side surfaces between the light exit surface 12A2b)
In addition, a seal or a plate (for example, a transparent seal or a transparent plate) on which the design is formed can be attached.

On the upper surface 44Nc (see FIG. 119 (b)) between the intermediate entrance surface (second entrance surface 12A2a) and the final exit surface (second exit surface 12A2b), characters, symbols, / Or when a design such as a figure is applied, or a seal or plate on which the design is formed (
For example, when a transparent sticker or a transparent plate is pasted, a design such as the character, symbol, and / or figure can be projected onto the road surface.

Also, for example, “the final emission surface (second emission surface 12A2b) is configured as a planar surface”
The third idea is to form the upper incident surface 42c, that is, the wide light distribution pattern P _WIDE (see FIG. 71 (e)) from the vehicle lamp 10N (lens body 12N) of the twelfth embodiment shown in FIG. The present invention can also be applied to a vehicular lamp (lens body) in which the optical system (see FIG. 76) is omitted.

Each numerical value shown in the above embodiment and each modified example is an exemplification, and any appropriate numerical value different from this can be used.

The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

10, 10A to 10N ... Vehicle lamps, 12, 12A, 12J, 12N ... Lens body, 12
A1 ... 1st lens part, 12A1a ... 1st emission surface, 12A1aa ... 1st rear end part, 12A1b
b ... 1st front end part, 12A2 ... 2nd lens part, 12A2a ... 2nd entrance surface, 12A2aa ... 2nd back end part, 12A2b ... 2nd exit surface, 12A3 ... Connection part, 12a ... 1st entrance surface, 12b ...
Reflective surface (lower reflective surface), 12c ... shade, 12d ... outgoing surface, 14 ... light source, 16, 16C ...
Lens assembly 18: Holding member 42a, 42b ... Pair of left and right entrance surfaces, 42c ... Top entrance surface, 44a, 44b ... Pair of left and right sides 44c ... Top surface, 44c1: Reflection surface for overhead sign, 44c2 ... Left top surface 44c3 ... right upper surface, 46a, 46b ... a pair of left and right emission surfaces

To achieve the above object, one aspect of the present invention includes a first lens unit disposed in front of a light source, and a second lens unit disposed in front of the first lens unit, wherein the light source Is configured so that a predetermined light distribution pattern including a cut-off line is formed at the upper edge when the light from the light passes through the first lens unit and the second lens unit in this order and is irradiated forward. The body includes a first lower reflection surface disposed between a rear end portion and a front end portion of the first lens portion, and a front end portion of the first lower reflection surface includes a shade, The rear end portion of the lens portion includes a first incident surface, the front end portion of the first lens portion includes a first intermediate emission surface, and the rear end portion of the second lens portion includes an intermediate incident surface, The front end of the second lens unit includes a final exit surface, and the first entrance surface, the first The reflecting surface, the first intermediate emitting surface, the intermediate incident surface, and the final emitting surface are the first lower reflecting surface of the light from the light source that has entered the first lens unit from the first incident surface. The light partially shielded by the shade and the light internally reflected by the first lower reflecting surface are emitted from the first intermediate emitting surface to the outside of the first lens unit, and further from the intermediate incident surface to the second A first light distribution pattern including a cutoff line defined by the shade of the first lower reflecting surface is formed at the upper end edge by being incident on the inside of the lens unit, emitted from the final emission surface, and irradiated forward. The first optical system is configured, the final emission surface is configured as a plane surface, and at least one of the first intermediate emission surface and the intermediate incident surface is emitted from the final emission surface. Light from light source It relates the vertical direction so that the collimated light is composed its surface shape, the predetermined light distribution pattern is characterized by being formed by the first light distribution pattern.

According to this aspect , first, it is possible to provide a lens body that looks good and has a sense of unity extending in a line shape in a predetermined direction .

Claims (7)

A first lens unit disposed in front of the light source; and a second lens unit disposed in front of the first lens unit, wherein the light from the light source is the first lens unit and the second lens. In the lens body configured to form a predetermined light distribution pattern including a cut-off line at the upper edge by being transmitted through the part in this order and irradiated forward,
A first lower reflecting surface disposed between a rear end portion and a front end portion of the first lens portion;
The tip portion of the first lower reflecting surface includes a shade,
A rear end portion of the first lens portion includes a first incident surface;
The front end portion of the first lens portion includes a first intermediate emission surface,
The rear end portion of the second lens portion includes an intermediate incident surface,
A front end portion of the second lens portion includes a final emission surface;
The first incident surface, the first lower reflecting surface, the first intermediate exit surface, the intermediate entrance surface, and the final exit surface are from the light source that has entered the first lens unit from the first entrance surface. Of the light, the light partially blocked by the shade of the first lower reflection surface and the light internally reflected by the first lower reflection surface are emitted from the first intermediate emission surface to the outside of the first lens unit, Furthermore, a cut-off line defined by the shade of the first lower reflecting surface at the upper end edge by being incident on the inside of the second lens unit from the intermediate incident surface, emitted from the final exit surface, and irradiated forward. A first optical system for forming a first light distribution pattern including:
The final emission surface is configured as a planar surface,
At least one of the first intermediate exit surface and the intermediate entrance surface has a surface shape configured such that light from the light source emitted from the final exit surface is collimated light in the vertical direction. And
The predetermined light distribution pattern is a lens body formed by the first light distribution pattern. A pair of left and right side surfaces disposed between a rear end portion of the first lens portion and the front end portion;
The rear end portion of the first lens portion is a pair of left and right second incident portions arranged on both the left and right sides of the first incident surface so as to surround the space between the light source and the first incident surface from the left and right sides. Including the face,
The front end of the first lens unit includes a pair of left and right second intermediate exit surfaces disposed on the left and right sides of the first intermediate exit surface,
The pair of left and right second incident surfaces, the pair of left and right side surfaces, the pair of left and right second intermediate exit surfaces, the intermediate entrance surface, and the final exit surface are formed from the pair of left and right second entrance surfaces to the first lens unit. The light from the light source that has entered the inside and is internally reflected by the pair of left and right side surfaces is emitted from the pair of left and right second intermediate emission surfaces to the outside of the first lens unit, and further from the intermediate incident surface. A pair of left and right second optical systems forming a second light distribution pattern is configured by being incident on the inside of the second lens portion, exiting from the final exit surface, and being irradiated forward.
At least one of the pair of left and right second intermediate exit surfaces and the intermediate entrance surface is shaped so that light from the light source emitted from the final exit surface is collimated light in the vertical direction. Is configured,
The lens body according to claim 1, wherein the predetermined light distribution pattern is formed as a combined light distribution pattern by superimposing the first light distribution pattern and the second light distribution pattern. A pair of left and right side surfaces disposed between a rear end portion of the first lens portion and the front end portion;
A pair of left and right second lower reflecting surfaces disposed between the rear end portion of the first lens portion and the front end portion and on both left and right sides of the first lower reflecting surface, and
The tip portions of the pair of left and right second lower reflecting surfaces include a shade,
The rear end portion of the first lens portion is a pair of left and right second incident portions arranged on both the left and right sides of the first incident surface so as to surround the space between the light source and the first incident surface from the left and right sides. Including the face,
The front end of the first lens unit includes a pair of left and right second intermediate exit surfaces disposed on the left and right sides of the first intermediate exit surface,
The pair of left and right second entrance surfaces, the pair of left and right sides, the pair of left and right second lower reflecting surfaces, the pair of left and right second intermediate exit surfaces, the intermediate entrance surface, and the final exit surface are the pair of left and right sides. Second
Light partially blocked by the shade of the pair of left and right second lower reflecting surfaces out of the light from the light source that is incident on the inside of the first lens unit from the incident surface and is internally reflected by the pair of left and right side surfaces, and the The light internally reflected by the pair of left and right second lower reflecting surfaces is emitted from the pair of left and right second intermediate emission surfaces to the outside of the first lens unit, and further from the intermediate incident surface to the inside of the second lens unit. Left and right forming a second light distribution pattern including a cut-off line defined by the shades of the pair of left and right second lower reflecting surfaces at the upper edge by being incident, emitted from the final emission surface, and irradiated forward A pair of second optical systems,
At least one of the pair of left and right second intermediate exit surfaces and the intermediate entrance surface is shaped so that light from the light source emitted from the final exit surface is collimated light in the vertical direction. Is configured,
The lens body according to claim 1, wherein the predetermined light distribution pattern is formed as a combined light distribution pattern by superimposing the first light distribution pattern and the second light distribution pattern. The rear end portion of the first lens unit includes an upper incident surface disposed on the upper side of the first incident surface so as to surround a space between the light source and the first incident surface from above. Or the lens body of 3. The lens body according to any one of claims 1 to 4, wherein the final emission surface is configured as a planar surface having a slant angle and / or a camber angle. The lens body according to any one of claims 1 to 5, wherein the final emission surface is disposed in a posture inclined obliquely upward and rearward so that a lower end edge thereof is positioned forward with respect to an upper end edge. The vehicle lamp provided with the lens body of any one of Claim 1 to 6, and the said light source.