JP2018063843A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture which can perform compactification of a structure for forming a diffusion light distribution pattern, and which can be miniaturized.SOLUTION: A vehicular lighting fixture includes: a first lens having an outside first incident surface for forming an outside first optical axis on the outside of a vehicle corresponding to a first emission surface and an inside first incident surface for forming an inside first optical axis inside the vehicle corresponding to the first emission surface; an outside light emitting chip provided on the outside first optical axis; an inside light emitting chip provided on the inside first optical axis; an outside second lens provided between the outside first incident surface and the outside light emitting chip; and an inside second lens provided between the inside first incident surface and the inside light emitting chip. The outside second lens has an outside second rear focal point further on the front side than an outside first rear focal point of the first lens. The inside second lens has an inside second rear focal point further on the front side than an inside first rear focal point of the first lens. The outside light emitting chip is provided at the outside second rear focal point, and the inside light emitting chip is provided at the inside second rear focal point.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicular lamp.

  Conventionally, a projection lens that is disposed on an optical axis extending in the longitudinal direction of the vehicle and includes an exit surface, an entrance surface on which light emitted from the exit surface is incident, and a reference point that is disposed to face the entrance surface And a light source that is disposed at or near the reference point, and that emits white light that enters the projection lens from the incident surface, exits from the exit surface, and is emitted forward. In the illumination lamp, the light source is a light source that emits white light by mixing at least the light of the first color and the light of the second color, and the white light traveling in the optical axis direction is a ratio of the first light. Is a light source that has a relatively large proportion of light of the first color and a relatively large proportion of light of the second color. The exit surface and / or the entrance surface from the entrance surface Of light from the reference point that enters the shadow lens, exits from the exit surface, and is irradiated forward, the incident position on the entrance surface is the first position on or near the optical axis. In a direction that is not parallel to the optical axis, and the light that is the second position where the incident position on the incident surface is away from the optical axis is controlled in a direction parallel to the optical axis, and The incident position on the incident surface is parallel to the optical axis as light enters between the first position and the second position, and the incident position on the incident surface gradually moves from the first position to the second position. 2. Description of the Related Art A vehicle headlamp characterized by a shape that is controlled so as to approach the direction of the vehicle is known (see Patent Document 1).

And in patent document 1, it is set as the above structures, the light which is the 1st position on the optical axis (or its vicinity) in the incident position to an incident surface is controlled in the direction not parallel to an optical axis, and incident Light whose incident position on the surface is the second position away from the optical axis is controlled in a direction parallel to the optical axis, and the incident position on the incident surface is between the first position and the second position. The shape of the exit surface and / or the entrance surface of the projection lens is designed so that the entrance position on the entrance surface gradually approaches a direction parallel to the optical axis as it goes from the first position to the second position. As a result, the chromaticity of a predetermined light distribution pattern (for example, a high-beam light distribution pattern) can be partially within the white range defined by a law (for example, JIS “D5500”). Is disclosed.
Note that Patent Document 1 also describes a case for a low beam.

JP 2014-164876 A

  By the way, there is a vehicular lamp that forms a diffused light distribution pattern and a condensed light distribution pattern individually and multiplexes them to form a low beam light distribution pattern. In such a vehicular lamp, the diffused light distribution pattern It is desired to reduce the size of the vehicular lamp by downsizing the configuration for forming the light source and the configuration for forming the light collection light distribution pattern.

On the other hand, in recent years, semiconductor-type light sources such as LEDs have come to be used. When a light source such as one LED is used to form a unit for forming a diffused light distribution pattern, for example, There may be a case where a sufficient amount of light required for the light distribution pattern cannot be obtained.
Therefore, it is conceivable to increase the number of units in order to obtain a sufficient amount of light, but there is a problem that the vehicular lamp is increased in size.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a vehicular lamp that can be made compact in size and can be downsized.

The present invention is grasped by the following composition in order to achieve the above-mentioned object.
(1) The vehicular lamp according to the present invention includes an outer first incident surface that forms an outer first optical axis on the outer side of the vehicle corresponding to the first outgoing surface, and an inner inner side of the vehicle corresponding to the first outgoing surface. A first lens having an inner first incident surface that forms one optical axis; a semiconductor-type outer light emitting chip provided on the outer first optical axis; and a semiconductor-type inner side provided on the inner first optical axis. A light emitting chip, an outer second lens provided between the outer first incident surface and the outer light emitting chip, and an inner second lens provided between the inner first incident surface and the inner light emitting chip. The outer second lens has an outer second rear focal point located on the front side of the outer first rear focal point of the first lens on the outer first optical axis, and the inner second lens is On the front side of the inner first rear focal point of the first lens on the inner first optical axis. The outer light emitting chip is provided in the vicinity of the outer second rear focus or the outer second rear focus, and the inner light emitting chip is disposed on the inner second rear focus or It is provided in the vicinity of the inner second rear focal point.

(2) In the configuration of (1) above, the first emission surface has a smooth surface shape without a step.

(3) In the configuration of the above (1) or (2), the outer second lens emits light from the outer light emitting chip corresponding to the outer second incident surface and the outer second incident surface. An outer second exit surface formed in a surface shape for performing light distribution control to irradiate the first entrance surface, and the inner second lens corresponds to the inner second entrance surface and the inner second entrance surface. And an inner second exit surface formed in a surface shape for performing light distribution control for irradiating light from the inner light emitting chip to the inner first incident surface.

(4) In the configuration of the above (3), the outer second emission surface spreads the light emitted from the outer light emitting chip, and the outer first incidence surface of the first lens and the outer first incidence surface of the first lens. 1 It has a basic shape that matches the spread of the cone connecting the rear focal point, and the light emitted from the vehicle inner side of the outer second emission surface toward the outer first incident surface of the first lens is emitted to the vehicle outer side. The inner second exit surface is formed to have a surface shape, and spreads the light emitted from the inner light emitting chip. The inner first entrance surface of the first lens and the inner first rear focus of the first lens. In addition to the basic shape that matches the spread of the cone connecting the two, the light emitted from the vehicle outer side of the inner second emission surface toward the inner first incident surface of the first lens has a surface shape that irradiates the vehicle inner side. form It is.

(5) In any one of the constitutions (1) to (4), the outer first incident surface is assumed to be an outer point light source on the outer first rear focal point and does not go through the outer second lens. When the light from the outside point light source is incident on the light, the light that enters the first lens from the outside first entrance surface on the outside of the vehicle is more radiated forward from the first exit surface to the inside of the vehicle. The inner first incident surface is assumed to be an inner point light source on the inner first rear focal point without passing through the inner second lens. When light from the inner point light source is incident on the vehicle, the more light that enters the first lens from the inner first incident surface on the inner side of the vehicle, the more light that irradiates the front side from the first emission surface. It is formed in the surface shape which performs light distribution control so that it may be irradiated.

(6) In the configuration according to any one of (1) to (5), light that is incident on the upper side in the vertical direction and the lower side in the vertical direction on the outer first incident surface and the inner first incident surface is the first. When the light is irradiated from the exit surface to the front side, the cut-off line side is irradiated, and when the light incident on the center in the vertical direction is irradiated from the first exit surface to the front side, the light distribution pattern is below. It is formed in a surface shape that controls light distribution so as to irradiate.

(7) In any one of the constitutions (1) to (6), a second lens member in which the outer second lens and the inner second lens are integrally formed is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the structure for forming a diffused light distribution pattern can be reduced in size, and the vehicle lamp which can be reduced in size can be provided.

It is a top view of vehicles provided with a vehicular lamp of an embodiment concerning the present invention. It is the perspective view seen from the slanting upper side which shows the principal part of the lamp unit of embodiment which concerns on this invention. It is the perspective view seen from the back side which shows the principal part of the lamp unit of embodiment which concerns on this invention. It is a figure for demonstrating the horizontal light distribution control by the 1st lens of embodiment which concerns on this invention, (a) demonstrates the light distribution control in the left side (vehicle outer side) of the 1st lens in the horizontal direction. It is a figure, (b) is a figure explaining the light distribution control by the horizontal direction right side (vehicle inside) of a 1st lens. It is a figure explaining the light distribution control of the perpendicular direction by the 1st lens of embodiment which concerns on this invention. It is a figure for demonstrating the outer side 2nd lens and inner side 2nd lens of embodiment which concerns on this invention, (a) is a figure for demonstrating the light distribution control of an outer side 2nd lens, (b) is. It is a figure for demonstrating the light distribution control of an inner 2nd lens. It is a figure which shows the light distribution pattern on the screen formed with the light which injected into the 1st lens via the outer side 2nd lens and inner side 2nd lens of embodiment which concerns on this invention by an isoluminous intensity line, (a) FIG. 6 is a diagram showing a light distribution pattern on a screen formed by light incident on the first lens via the outer second lens, and (b) light incident on the first lens via the inner second lens. It is a figure which shows the light distribution pattern on the screen formed by. It is a figure which shows the diffused light distribution pattern on the screen for low beam light distribution patterns of embodiment which concerns on this invention with an isoluminous intensity line.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the accompanying drawings. The same number is attached | subjected to the same element through the whole description of embodiment.

In the embodiments and drawings, “front” and “rear” indicate “forward direction” and “reverse direction” of the vehicle, respectively, and “up”, “down”, “left” unless otherwise specified. "And" Right "respectively indicate directions viewed from the driver who gets on the vehicle.
Furthermore, “inside” indicates the vehicle inner side with respect to the installation position of the vehicle lamp in the vehicle, and similarly “outer” indicates the vehicle outer side.
That is, the right side is “inside” and the left side is “outside” in the left vehicle lamp, the left side is “inside”, and the right side is “outside” in the right vehicle lamp.

  The vehicular lamp according to the embodiment of the present invention is a vehicular headlamp (101R, 101L) provided on each of the left and right sides of the front of the vehicle 102 shown in FIG. 1, and is simply referred to as a vehicular lamp.

The left and right vehicular lamps are symmetric with respect to the lamp optical axis (hereinafter referred to as the Z axis) (for example, the lens and the like are reversed with respect to the lamp optical axis (Z axis) as a reference). have.
For this reason, in the left vehicle lamp, the contents described as the inside of the vehicle are the same as the contents inside the vehicle in the right vehicle lamp, and conversely, in the left vehicle lamp, it is described as the outside of the vehicle. The contents are the same as the contents outside the vehicle in the right vehicle lamp.
Therefore, hereinafter, the left-hand vehicular lamp will be mainly described, and a description on the right-hand vehicular lamp may be omitted.
In the following description, as described above, since the left-hand vehicular lamp is described, the left side in the horizontal direction is the outside of the vehicle, and the right side in the horizontal direction is the inside of the vehicle.

  The vehicular lamp according to the present embodiment includes a housing (not shown) that opens to the front side of the vehicle and an outer lens (not shown) that is attached to the housing so as to cover the opening, and is formed by the housing and the outer lens. A lamp unit 10 (see FIGS. 2 and 3) and the like are disposed in the lamp chamber.

2 is a perspective view of the main part of the lamp unit 10 as seen from an oblique upper side, and FIG. 3 is a perspective view of the main part of the lamp unit 10 as seen from the rear side.
In the following drawings, the Z axis is the lamp optical axis, the Y axis is the axis indicating the vertical direction of the vehicle 102, and the X axis orthogonal to both the Y axis and the Z axis is the vehicle. This is an axis indicating the horizontal direction of 102.

As shown in FIGS. 2 and 3, the lamp unit 10 of the present embodiment includes a first lens member 20, a second lens member 30, and a light source unit 40.
The lamp unit 10 includes a heat sink (not shown) in which the light source unit 40 is provided, and a lens holder (not shown) for attaching the first lens member 20 and the second lens member 30 to the heat sink.

(First lens member)
The first lens member 20 is formed using a transparent glass material, a resin material, or the like. However, the first lens member 20 is made of acrylic such as PMMA from the viewpoint of good moldability, small wavelength dependency of refractive index, and easy suppression of blue spectral colors. It is preferable to use a resin.

  The first lens member 20 includes a first lens 21, which will be described later, and flange portions (not shown) provided on both the left and right sides (vehicle outer side and inner side) of the first lens 21 in the horizontal direction (X-axis direction). ing.

  The first lens member 20 has a flange portion (not shown) fixed to a lens holder (not shown), and is attached to a heat sink (not shown) via the lens holder.

  The flange portions of the first lens member 20 are not limited to being provided on both the left and right sides in the horizontal direction (see the X axis) with respect to the first lens 21, and are provided on both the upper and lower sides in the vertical direction (see the Y axis). May be.

The first lens member 20 need not be limited to the one fixed to the lens holder by the flange portion, and may be fixed to the lens holder by adhesive fixing or the like.
In this case, the 1st lens member 20 consists only of the 1st lens 21 mentioned later, Therefore, the lamp unit 10 should just have the 1st lens 21 at least.

(Second lens member)
In the present embodiment, the second lens member 30 is a member formed integrally so that an outer second lens 31 described later and an inner second lens 32 described later are integrally connected by a connecting portion 33.
Similarly to the first lens member 20, the second lens member 30 also includes flange portions (not shown) on the left and right sides (the vehicle outer side and the inner side) in the horizontal direction (see the X axis).
That is, the second lens member 30 includes flange portions (not shown) on the vehicle outer side of the outer second lens 31 and the vehicle inner side of the inner second lens 32.

The flange portion (not shown) of the second lens member 30 is fixed to a lens holder (not shown), and is attached to a heat sink (not shown) via the lens holder.
However, similarly to the first lens member 20, the second lens member 30 does not have to be limited to providing flange portions on both the left and right sides in the horizontal direction (see the X axis). Flange portions may be provided on both the upper and lower sides of the second lens 32 in the vertical direction (Y-axis direction). Instead of being fixed to the lens holder by the flange portion, it is fixed to the lens holder by adhesive fixing or the like. You may make it do.

  In the present embodiment, the second lens member 30 is a single lens member. However, the outer second lens 31 and the inner second lens 32 do not have to be integrated by the connecting portion 33, and the two second lenses. A configuration using the member 30, that is, a configuration using the second lens member 30 having the outer second lens 31 and the second lens member 30 having the inner second lens 32 may be employed.

  Since the flange portion is not an essential requirement, the individual second lens member 30 may be composed only of the outer second lens 31 and the inner second lens 32. Therefore, the lamp unit 10 is at least on the outer side. What is necessary is just to have the 2nd lens 31 and the inner side 2nd lens 32. FIG.

  However, as in the present embodiment, it is possible to reduce the manufacturing cost if the outer second lens 31 and the inner second lens 32 are configured as one second lens member 30 integrated by the connecting portion 33. In addition, the configuration of the lens holder and the like can be simplified, and the cost of parts of the lens holder and the like can be reduced. Therefore, one second lens in which the outer second lens 31 and the inner second lens 32 are integrated by the connecting portion 33. It is preferable to use the lens member 30.

  The second lens member 30 may be formed using a transparent glass material, a resin material, or the like, similarly to the first lens member 20, but the second lens member 30 is formed by the light source unit 40 (more specifically, Is arranged near the outer light emitting chip 42 and the inner light emitting chip 43), the second lens member 30 is made of a polycarbonate resin from the viewpoint of good moldability and heat resistance. Is preferred.

(Light source)
The light source unit 40 includes a substrate 41, an outer light emitting chip 42 provided on the substrate 41 on the left side (vehicle outer side) in the horizontal direction (see the X axis), and a right side (vehicle inner side) in the horizontal direction (see the X axis). And an inner light emitting chip 43 provided.

  The outer light emitting chip 42 is provided on the outer first optical axis PZ1 so that the light emission center coincides with an outer first optical axis PZ1 of the first lens 21 described later. Is provided on the inner first optical axis PZ2 so that the inner first optical axis PZ2 of the first lens 21 described later coincides.

In the present embodiment, the outer light emitting chip 42 and the inner light emitting chip 43 are provided on the substrate 41 so that the horizontal distance between the outer light emitting chip 42 and the inner light emitting chip 43 is about 14 mm.
In the present embodiment, one aluminum mounting substrate provided with a power feeding structure (conductive pattern) is used as the substrate 41, and the outer light emitting chip 42 and the inner light emitting chip 43 are mounted on the substrate 41. The light source unit 40, that is, the light source unit 40 having an outer light emitting unit and an inner light emitting unit.
However, the substrate 41 for the outer light emitting chip 42 and the substrate 41 for the inner light emitting chip 43 may be used separately to form the light source unit 40 having an outer light source and an inner light source.

  In this embodiment, the outer light emitting chip 42 and the inner light emitting chip 43 are LED chips that are semiconductor light emitting elements. Similarly, laser chips (LD chips) that are semiconductor light emitting elements are used. It may be.

In some cases, the outer light-emitting chip 42 and the inner light-emitting chip 43 are partially missing. In such a case, the outer light-emitting chip 42 and the inner light-emitting chip 43 are located at the upper side in the vertical direction. As described above, the outer light emitting chip 42 and the inner light emitting chip 43 are preferably arranged on the substrate 41.
By doing so, the chipped portion can be projected downward, and a good light distribution pattern can be formed by letting it escape below the light distribution pattern.

(First lens)
As shown in FIG. 2, the first lens 21 includes an outer first emission surface 22 a on the left side (vehicle outer side) in the horizontal direction (X-axis direction) and the horizontal direction (X A first emission surface 22 having an inner first emission surface 22b on the right side (vehicle inner side) in the axial direction.

The outer first emission surface 22a and the inner first emission surface 22b are both flat and flat, and there is no step between them.
That is, the first lens 21 is provided with one first emission surface 22 having a smooth planar shape without a step.

The first output surface 22 is a front side from the saw profile is substantially rectangular (approximately 30mm square vertical and horizontal, respectively), in this embodiment, has a C ² consecutive planes.
However, first output surface 22 is not limited to C ² consecutive planes, a free surface which may change the surface shape appropriately in accordance with the requirements of such a design.

  On the other hand, as shown in FIG. 2, the first lens 21 has an outer first incident surface that protrudes rearward on the left side (vehicle outer side) in the horizontal direction (X-axis direction) with respect to the lamp optical axis (see the Z-axis). 23a and an inner first incident surface 23b protruding rearward on the right side (vehicle inner side) in the horizontal direction (X-axis direction), and the outer first incident surface 23a and the inner first incident surface 23b are connected to each other. The first incident surface 23 having a recess substantially at the position of the lamp optical axis (see Z axis) is provided.

  The outer first entrance surface 23a corresponds to the outer first exit surface 22a of the first exit surface 22 mainly on the vehicle outer side (left side in the horizontal direction) and the outer first optical axis on the vehicle outer side (left side in the horizontal direction). The inner first incident surface 23b has a surface shape that forms PZ1, and the inner first incident surface 23b mainly corresponds to the inner first emission surface 22b on the inner side (right side in the horizontal direction) of the first emission surface 22. It has a surface shape that forms the inner first optical axis PZ2 on the right side in the horizontal direction).

The first lens 21 is set to perform predetermined light distribution control by the surface shapes of the outer first incident surface 23a and the inner first incident surface 23b.
As described above, the first lens 21 has a rear focal point (an outer first rear focal point PF1 and an inner first optical axis PZ1 and an inner first optical axis PZ2) on each optical axis. 1 having a rear focal point PF2).

FIG. 4 is a diagram for explaining the light distribution control in the horizontal direction by the first lens 21, and FIG. 4A is a diagram for explaining the light distribution control on the left side (the vehicle outside) of the first lens 21 in the horizontal direction. FIG. 4B is a diagram for explaining light distribution control on the right side (vehicle inside) of the first lens 21 in the horizontal direction.
In FIGS. 4A and 4B, when an outer point light source and an inner point light source are assumed for the outer first rear focal point PF1 and the inner first rear focal point PF2 of the first lens 21, the outer points thereof are assumed. Light rays emitted from the light source and the inner point light source in the horizontal direction are also described, but this light ray represents a part of the light rays emitted from the outer point light source and the inner point light source. There are many light beams between the illustrated light beams.

FIG. 5 is a diagram for explaining light distribution control in the vertical direction by the first lens 21.
FIG. 5 is a side view of the main part of the lamp unit 10 as viewed from the side, and also illustrates light rays emitted from the light emitting center of the outer light emitting chip 42 in the vertical direction.
However, the light rays shown in FIG. 5 show a part of the light ray group emitted from the light emission center of the outer light emitting chip 42, and in fact, there are many light rays between the illustrated light rays. To do.

  As shown in FIG. 4A, the outer first incident surface 23a is assumed to be an outer point light source on the outer first rear focal point PF1 on the outer first optical axis PZ1, without passing through the outer second lens 31. Light incident on the first lens 21 from a position outside the vehicle (on the left side in the horizontal direction) of the outer first incident surface 23a when light from the outer point light source is incident on the first lens 21 from the outer first incident surface 23a. As shown, the light is emitted from the first emission surface 22 (outside first emission surface 22a) to the front side so that the light distribution control is performed so that the light is emitted to the vehicle inner side (right side in the horizontal direction). .

  Specifically, the light incident on the first lens 21 from the innermost side (horizontal right side) of the outer first incident surface 23a is approximately 1 on the right side (vehicle inner side) of the vertical reference line on the screen in the horizontal direction. The light is emitted from the first emission surface 22 (outside first emission surface 22a) toward the position of the degree.

Then, in order, the light entering the first lens 21 from the vehicle outer side (the left side in the horizontal direction) of the outer first incident surface 23a toward the right side (the vehicle inner side) in the horizontal direction on the screen further. 22 (outer first exit surface 22a) is irradiated, and light incident on the first lens 21 from the outer first entrance surface 23a on the outermost vehicle side (left side in the horizontal direction) is perpendicular to the screen. Irradiation is performed toward a position of about 23 degrees on the right side (inside the vehicle) in the horizontal direction from the reference line.
That is, the outer first incident surface 23a is mainly formed in a surface shape that forms a light distribution pattern on the vehicle inner side located on the right side of the vertical reference line on the screen.

  On the other hand, as shown in FIG. 4B, the inner first incident surface 23b does not go through the inner second lens 32 assuming an inner point light source on the inner first rear focal point PF2 on the inner first optical axis PZ2. When light from the inner point light source is incident on the first lens 21 from the inner first incident surface 23b, the light enters the first lens 21 from a position on the inner first incident surface 23b on the vehicle inner side (right side in the horizontal direction). It is formed in a surface shape that performs light distribution control so that the light emitted from the first emission surface 22 (inner first emission surface 22b) to the front side is emitted to the vehicle outer side (left side in the horizontal direction) as the light is emitted. Yes.

  Specifically, the light incident on the first lens 21 from the outermost vehicle side (the left side in the horizontal direction) of the inner first incident surface 23b is approximately 1 on the left side (the vehicle outer side) in the horizontal direction of the vertical reference line on the screen. The light is emitted from the first emission surface 22 (inner first emission surface 22b) toward the position of the degree.

Then, in order, the light incident on the first lens 21 from the vehicle inner side (horizontal right side) of the inner first incident surface 23b toward the left side (vehicle outer side) of the horizontal direction further on the screen. 22 (inner first exit surface 22b) is irradiated, and the light incident on the first lens 21 from the inner first entrance surface 23b on the innermost side (the right side in the horizontal direction) is perpendicular to the screen. The light is emitted toward a position of about 28 degrees on the left side (the vehicle outside) in the horizontal direction from the reference line.
That is, the inner first incident surface 23b is mainly formed in a surface shape that forms a light distribution pattern outside the vehicle located on the left side of the vertical reference line on the screen.

  Note that, as in the present embodiment, the light that has entered the first lens 21 from the inner first entrance surface 23b on the innermost side (the right side in the horizontal direction) is the left side (the outer side of the vehicle) from the vertical reference line on the screen ), The diffusion light distribution pattern having good visibility can be formed by spreading the diffusion light distribution pattern outward from the vehicle inner side.

Next, light distribution control in the vertical direction of the first lens 21 will be described with reference to FIG.
As shown in FIG. 5, the light incident on the first lens 21 from the vertical center side of the outer first incident surface 23 a of the first lens 21 via the outer second lens 31 is incident on the first emitting surface 22 (outer first The light is emitted from the center in the vertical direction of the one emission surface 22a) to the front side, and at that time, the light is emitted downward.
That is, the light distribution is controlled so as to irradiate below the light distribution pattern on the screen.

  In addition, light incident on the first lens 21 from the vertical upper side and the vertical lower side of the outer first incident surface 23a is vertically upper and lower in the vertical direction of the first outgoing surface 22 (outer first outgoing surface 22a). However, the irradiated light is not irradiated downward and is applied to the cut-off line side of the light distribution pattern on the screen.

  FIG. 5 shows a light beam that enters the first lens 21 from the outer first incident surface 23a of the first lens 21 and is irradiated forward from the first outgoing surface 22 (outer first outgoing surface 22a). However, the same applies to light rays that enter the first lens 21 from the inner first incidence surface 23b of the first lens 21 and are irradiated forward from the first emission surface 22 (inner first emission surface 22b).

  In other words, the outer first incident surface 23a and the inner first incident surface 23b are configured such that light incident on the first lens 21 from the upper side in the vertical direction and the lower side in the vertical direction of the outer first incident surface 23a and the inner first incident surface 23b is first. When irradiating the front side from one exit surface 22, the light that irradiates the cut-off line side and the light incident on the first lens 21 from the vertical center side of the outer first incident surface 23 a and the inner first incident surface 23 b is irradiated. When irradiating the front side from the 1st output surface 22, it is formed in the surface shape which controls light distribution so that it may irradiate below a light distribution pattern.

  Here, the center in the vertical direction of the outer first entrance surface 23a and the inner first entrance surface 23b is the exit surface (outer second exit surface) of the outer second lens 31 and the inner second lens 32 that can be regarded as a virtual point light source. 31a and the inner second exit surface 32a) are close to each other, so that if the light incident position is shifted due to an error during assembly of the first lens member 20 or the second lens member 30, the distance from the first exit surface 22 Deviations in the direction of light irradiation are likely to occur.

  However, in this embodiment, light distribution control is performed so that light incident on the first lens 21 from the vertical center side of the outer first incident surface 23a and the inner first incident surface 23b is irradiated below the light distribution pattern. Therefore, even if there is an error when the first lens member 20 or the second lens member 30 is assembled, it is possible to avoid light being irradiated above the cut-off line, and the generation of glare light is suppressed. A diffusion light distribution pattern for a low beam light distribution pattern can be formed.

  The basic overall shape of the diffused light distribution pattern is formed by the light distribution control by the first lens 21 as described above.

Next, the outer second lens 31 and the inner second lens 32 will be described in detail.
6 is a diagram for explaining the outer second lens 31 and the inner second lens 32. FIG. 6A is a diagram for explaining light distribution control of the outer second lens 31, and FIG. FIG. 7B is a diagram for explaining light distribution control of the inner second lens 32.

6 (a) and 6 (b) are plan views viewed from above, and the light rays emitted in the horizontal direction from the light emission centers of the outer light emitting chip 42 and the inner light emitting chip 43 are also shown. Show.
However, the light rays shown in FIGS. 6 (a) and 6 (b) show a part of a group of light rays emitted from the emission center, and actually between the illustrated light rays. There are many rays.

FIG. 7 is a diagram showing a light distribution pattern on the screen formed by the light incident on the first lens 21 through the outer second lens 31 and the inner second lens 32 by isoluminous lines. ) Is a diagram showing a light distribution pattern on the screen formed by light incident on the first lens 21 via the outer second lens 31, and FIG. 7B shows the first light distribution pattern via the inner second lens 32. It is a figure which shows the light distribution pattern on the screen formed with the light which injected into 1 lens.
In addition, the VU-VL line of FIG. 7 has shown the vertical reference line on a screen, the HL-HR line has shown the horizontal reference line on a screen, and it is the same also in another figure.

(Outside second lens)
As shown in FIG. 6A, the outer second lens 31 is considerably shorter than the outer first rear focal point PF1 of the first lens 21, and is located on the front side of the outer first rear focal point PF1. The outer second lens 31 is disposed such that the outer second rear focus SF1 is positioned on the outer first optical axis PZ1 of the first lens 21.

Specifically, the outer second rear focal point SF1 is located at a position of about 5.5 mm on the rear side of the outer second lens 31.
The outer light emitting chip 42 is arranged such that the light emission center is located in the vicinity of the outer second rear focus SF1 or the outer second rear focus SF1.
In the present embodiment, the outer light emitting chip 42 is disposed such that the light emission center coincides with the outer second rear focal point SF1.

On the other hand, the outer first rear focus PF1 is located at a position about 16 mm behind the outer second rear focus SF1, and when the outer second lens 31 is used, the outer second lens 31 is not used. Compared to the case where the outer light emitting chip 42 is disposed near the outer first rear focus PF1 or the vicinity of the outer first rear focus PF1, the outer light emitting chip 42 can be disposed much closer to the first lens 21. ing.
For this reason, the distance from the 1st lens 21 to the outer side light emission chip | tip 42 can be shortened, and it can be set as a compact structure in the front-back direction.

  Further, when the outer light emitting chip 42 is provided at the outer first rear focal point PF1, since the distance from the outer light emitting chip 42 to the first lens 21 is long, the spread of light emitted from the outer light emitting chip 42 is increased. In order to receive the light, the first lens 21 needs to be large.

  However, when the outer second lens 31 whose back focus is set at a short distance is used as in the present embodiment, the light emitted from the outer light emitting chip 42 without increasing the outer second lens 31. Can be received by the outer second lens 31 before the first lens 21 is enlarged, and the light can be received without increasing the first lens 21 by appropriate light distribution control by the outer second lens 31. It can be received by one lens 21.

  Specifically, the outer second lens 31 is arranged on the inner side woven by two axes of the horizontal direction and the vertical direction so that the light emitted from the outer light emitting chip 42 is smoothly incident on the outer second lens 31. Light is appropriately irradiated toward the outer first incident surface 23a of the first lens 21 in accordance with the shape of the outer second incident surface 31b formed on the complex secondary curved surface that is gently depressed and the outer second incident surface 31b. And an outer second emission surface 31a formed in a surface shape for performing light distribution control.

  As described above, the outer second emission surface 31a is formed as a free-form surface in order to perform light distribution control according to the shape of the outer second incident surface 31b. It has a protruding free-form surface.

  The outer second exit surface 31a is configured to irradiate light toward the outer first incident surface 23a of the first lens 21 appropriately when irradiated from the first lens 21 side. It has a surface shape that defocuses with respect to PF1.

  More specifically, as shown in FIG. 6A, the outer second incident surface 31b is irradiated with light from the first lens 21 side in the horizontal direction in which the outer first rear focal point PF1 is irradiated with light. (Hereinafter referred to as the outer second horizontal direction reference position B1).

  The outer second exit surface 31a, when irradiated with light from the first lens 21 side, has the outer second incident surface 31b on the vehicle outer side (the left side in the horizontal direction) with reference to the outer second horizontal direction reference position B1. As shown by the arrow T11, the light emitted from the outer side shifts the focal point to the vehicle outer side (the left side in the horizontal direction) from the outer first rear focal point PF1, and the outer side with respect to the outer second horizontal reference position B1. As the light emitted from the vehicle inner side (right side in the horizontal direction) of the second incident surface 31b, as indicated by an arrow T12, the surface shifts in focus toward the vehicle inner side (right side in the horizontal direction) from the outer first rear focus PF1. It is formed into a shape.

  In the present embodiment, the outer second light exit surface 31a is configured such that the light emitted from the outer second entrance surface 31b on the outermost vehicle outer side (left side in the horizontal direction) is focused on the vehicle outer side (horizontal direction) than the outer first rear focus PF1. And the focal point of the light irradiated from the outer second entrance surface 31b on the innermost side (the right side in the horizontal direction) with respect to the outer side first rear focal point PF1 (the right side in the horizontal direction). ) At a position F12.

  In this way, when the outer second exit surface 31a is formed in a shape that shifts the focal point, the light incident on the outer second lens 31 from the outer second entrance surface 31b is transmitted from the outer second exit surface 31a to the first lens 21. When the light is irradiated on the (outer first incident surface 23a) side, the light is converted inward.

This inward light conversion is basically performed so as to match the spread of the cone C1 connecting the outer first rear focal point PF1 from both horizontal ends of the outer first incident surface 23a shown in FIG. 4A. It has been broken.
However, the focus shift amount (see the arrow T12) on the vehicle inner side (right side in the horizontal direction) is set slightly larger than the focus shift amount (see arrow T11) on the vehicle outer side (left side in the horizontal direction). It is designed to convert more inward.

  For this reason, as shown in FIG. 6A, the light is irradiated from the outermost vehicle outer side (the left side in the horizontal direction) of the outer second light exit surface 31a and from the outermost vehicle outer side (the left side in the horizontal direction) of the outer first incident surface 23a. As described with reference to FIG. 4A, the light incident on the first lens 21 is emitted toward a position of about 23 degrees on the right side (inside the vehicle) in the horizontal direction from the vertical reference line on the screen. ing.

  On the other hand, as shown in FIG. 6 (a), the light emitted from the innermost vehicle side (right side in the horizontal direction) of the outer second emission surface 31a toward the outer first incident surface 23a is slightly emitted to the vehicle outer side. The irradiated light is incident on the first lens 21 from the vehicle inner side (right side in the horizontal direction) of the outer first incident surface 23a and slightly outside the vehicle (first outer surface 22a). (Left side in the horizontal direction), and light is distributed to the outside of the vehicle (left side in the horizontal direction) about several degrees from the vertical reference line on the screen.

  That is, the outer second emission surface 31a connects the outer periphery of the outer first incident surface 23a of the first lens 21 and the outer first rear focal point PF1 of the first lens 21 by spreading the light emitted from the outer light emitting chip 42. While having a basic shape that matches the spread of the cone C1, the inner side of the outer second exit surface 31a in the horizontal direction is directed from the inner side of the outer second exit surface 31a toward the outer first entrance surface 23a of the first lens 21. The light to be irradiated is formed into a surface shape that irradiates the outside of the vehicle.

As a result, as shown in FIG. 7A, the light distribution pattern on the screen formed by the light irradiated through the outer second lens 31 is the vertical reference line (VU−) of the diffused light distribution pattern. It covers a range from the vehicle outer side (left side in the horizontal direction) to the vehicle inner side (right side in the horizontal direction) slightly from the VL line.
However, in FIG. 7A, the light distribution range is widened by the width of the light emitting surface of the outer light emitting chip 42.

(Inner second lens)
As shown in FIG. 6B, the inner second lens 32 is considerably shorter than the inner first rear focal point PF2 of the first lens 21, and is located on the front side of the inner first rear focal point PF2. The inner second lens 32 is disposed such that the inner second rear focal point SF2 is positioned on the inner first optical axis PZ2 of the first lens 21.

Specifically, the inner second rear focus SF2 is located at a position of about 5.5 mm on the rear side of the inner second lens 32.
The inner light emitting chip 43 is arranged so that the light emission center is located in the vicinity of the inner second rear focus SF2 or the inner second rear focus SF2.
In the present embodiment, the inner light emitting chip 43 is arranged such that the light emission center coincides with the inner second rear focal point SF2.

On the other hand, the inner first rear focal point PF2 is positioned at a position about 16 mm behind the inner second rear focal point SF2, and when the inner second lens 32 is used, the inner second lens 32 is not used. Compared with the case where the inner light emitting chip 43 is disposed in the vicinity of the inner first rear focal point PF2 or in the vicinity of the inner first rear focal point PF2, the inner light emitting chip 43 can be disposed much closer to the first lens 21. ing.
For this reason, the distance from the 1st lens 21 to the inner side light emission chip | tip 43 can be shortened, and it can be set as a compact structure in the front-back direction.

  Further, when the inner light emitting chip 43 is provided at the inner first rear focal point PF2, the distance from the inner light emitting chip 43 to the first lens 21 is long, so that the spread of light emitted from the inner light emitting chip 43 is increased. In order to receive the light, the first lens 21 needs to be large.

  However, when the inner second lens 32 whose back focus is set at a short distance is used as in the present embodiment, the light emitted from the inner light-emitting chip 43 without increasing the inner second lens 32. Can be received by the second inner lens 32 before the first lens 21 is enlarged, and the light can be received without increasing the first lens 21 by appropriate light distribution control by the second inner lens 32. It can be received by one lens 21.

  Specifically, the inner second lens 32 is arranged on the inner side woven by two axes of the horizontal direction and the vertical direction so that the light emitted from the inner light emitting chip 43 is smoothly incident on the inner second lens 32. Light is appropriately irradiated toward the inner first incident surface 23b of the first lens 21 in accordance with the shape of the inner second incident surface 32b formed on the complex quadratic curved surface that is gently depressed and the inner second incident surface 32b. And an inner second emission surface 32a formed in a surface shape for performing light distribution control.

  As described above, the inner second emission surface 32a is formed as a free curved surface in order to perform light distribution control according to the shape of the inner second incident surface 32b. It has a protruding free-form surface.

  And in order to irradiate light appropriately toward the inner first incident surface 23 b of the first lens 21, the inner second emission surface 32 a has an inner first rear focal point when irradiating light from the first lens 21 side. It has a surface shape that defocuses with respect to PF2.

  More specifically, as shown in FIG. 6B, the inner second incident surface 32b is a horizontal direction in which light is irradiated to the inner first rear focal point PF2 when light is irradiated from the first lens 21 side. (Hereinafter referred to as the inner second horizontal reference position B2).

  When the inner second exit surface 32a is irradiated with light from the first lens 21 side, the inner second entrance surface 32b is positioned outside the vehicle (the left side in the horizontal direction) with reference to the inner second horizontal direction reference position B2. As shown by the arrow T21, the light emitted from the inner side is shifted from the inner first rear focal point PF2 to the outside of the vehicle (on the left side in the horizontal direction), and the inner side with respect to the inner second horizontal reference position B2. As the light emitted from the vehicle inner side (right side in the horizontal direction) of the second incident surface 32b, as indicated by an arrow T22, the surface shifts in focus to the vehicle inner side (right side in the horizontal direction) from the inner first rear focus PF2. It is formed into a shape.

  In the present embodiment, the inner second exit surface 32a has the light emitted from the inner second incident surface 32b on the outermost vehicle outer side (left side in the horizontal direction) positioned on the vehicle outer side (horizontal direction) than the inner first rear focus PF1. And the focal point of the light emitted from the inner second incident surface 32b on the innermost side (the right side in the horizontal direction) is closer to the inner side (the right side in the horizontal direction) than the inner first rear focus PF2. ) At a position F22.

  The focal shift amount (see arrow T21) of the inner second lens 32 on the vehicle outer side (left side in the horizontal direction) is the focal shift amount (see arrow T21) of the outer second lens 31 on the vehicle inner side (horizontal right side). On the other hand, the amount of focus shift (see arrow T22) on the vehicle inner side (right side in the horizontal direction) of the inner second lens 32 is set to be slightly larger than the vehicle of the outer second lens 31. It is set to be substantially the same as the amount of shift of the focus on the outside (left side in the horizontal direction) (see arrow T11).

  As described above, when the inner second exit surface 32a is formed to have a defocused surface shape, the light incident on the inner second lens 32 from the inner second entrance surface 32b is transmitted from the inner second exit surface 32a to the first lens 21. When the light is irradiated on the (inner first incident surface 23b) side, the light is converted inward.

This inward light conversion is basically performed so as to match the spread of the cone C2 connecting the inner first rear focal point PF2 from both horizontal ends of the inner first incident surface 23b shown in FIG. 4B. It has been broken.
However, the focus shift amount (see arrow T21) on the vehicle outer side (left side in the horizontal direction) is set slightly larger than the focus shift amount (see arrow T22) on the vehicle inner side (right side in the horizontal direction). It is designed to convert more inward.

  Therefore, as shown in FIG. 6B, the light is irradiated from the innermost side of the inner second exit surface 32a (the right side in the horizontal direction) and from the innermost side of the inner first incident surface 23b (the right side in the horizontal direction). As described with reference to FIG. 4B, the light incident on the first lens 21 is irradiated toward a position of about 28 degrees on the left side of the horizontal direction (the vehicle outside) from the vertical reference line on the screen. ing.

  On the other hand, as shown in FIG. 6A, the light emitted from the outermost vehicle side (the left side in the horizontal direction) of the inner second emission surface 32a toward the inner first incident surface 23b is slightly irradiated to the inner side of the vehicle. The irradiated light is incident on the first lens 21 from the vehicle outer side (the left side in the horizontal direction) of the inner first incident surface 23b, and slightly from the first light emitting surface 22 (the inner first light emitting surface 22b) to the vehicle inner side ( (Right side in the horizontal direction), and light is distributed inside the vehicle (right side in the horizontal direction) about several degrees from the vertical reference line on the screen.

  That is, the inner second emission surface 32a connects the outer periphery of the inner first incident surface 23b of the first lens 21 and the inner first rear focal point PF2 of the first lens 21 by spreading the light emitted from the inner light emitting chip 43. While having a basic shape that matches the spread of the cone C2, the outer side of the inner second exit surface 32a in the horizontal direction is directed from the outer side of the inner second exit surface 32a toward the inner first entrance surface 23b of the first lens 21. The light to be irradiated is formed into a surface shape that irradiates the inside of the vehicle.

As a result, as shown in FIG. 7B, as a light distribution pattern on the screen formed by light irradiated through the inner second lens 32, a vertical reference line (VU) of the diffused light distribution pattern is used. It covers the range from the vehicle inner side (right side in the horizontal direction) to the vehicle outer side (left side in the horizontal direction) slightly from the -VL line.
However, in FIG. 7B, the light distribution range is widened by the width of the light emitting surface of the inner light emitting chip 43.

When the light distribution patterns shown in FIGS. 7A and 7B are multiplexed, a good diffusion light distribution pattern for a low beam light distribution pattern as shown in FIG. 8 is formed.
As described above, the light distribution pattern shown in FIG. 7A has a light distribution range slightly outside the vehicle (on the left side in the horizontal direction) with respect to the vertical reference line (VU-VL line). The light distribution pattern shown in b) has a light distribution range slightly inside the vehicle (right side in the horizontal direction) from the vertical reference line (VU-VL line). In the vicinity, by overlapping these, as shown in FIG. 8, a good high luminous intensity band is formed at the center of the diffused light distribution pattern.

In the present embodiment, the vehicle lamp on the left side of the vehicle is described. The right side is the inside of the vehicle and the left side is the outside of the vehicle.
On the other hand, in the case of a vehicle lamp on the right side of the vehicle, the left side is the inside of the vehicle and the right side is the outside of the vehicle. As mentioned at the beginning, the lamps on the left and right sides of the vehicle are reversed left and right with respect to the lamp optical axis. It has a configuration.

  For this reason, in the vehicular lamp on the left side of the vehicle, the contents described as the configuration on the inner side of the vehicle with respect to the lamp optical axis (see the Z axis) are also the configuration on the inner side of the vehicular lamp on the right side of the vehicle. In the lamp, the contents described as the configuration outside the vehicle from the lamp optical axis (see Z axis) are the configuration inside the vehicle also in the vehicle lamp on the right side of the vehicle.

  In the above description, the inside of the vehicle is referred to as “inside” and the outside of the vehicle is referred to as “outside” with reference to the lamp optical axis (see Z-axis). It can also be applied to.

  According to the above configuration, in order to form a light distribution region on the vehicle inner side (right side in the horizontal direction) and a light distribution region on the vehicle outer side (left side in the horizontal direction) in the diffused light distribution pattern, 1 Since each light-emitting chip (inner light-emitting chip 43 and outer light-emitting chip 42) is used, the amount of light can be doubled compared to the case where a diffused light distribution pattern is formed with only one light-emitting chip, and sufficient luminous intensity can be obtained. Can be secured.

In addition, the area where the first lens 21 controls the light distribution is handled as two adjacent areas forming the light distribution pattern on the vehicle inner side and the vehicle outer side, and the vehicle out of the areas where the first lens 21 controls the light distribution. The inner second lens 32 is arranged with respect to the region forming the inner (right side in the horizontal direction) to correspond the inner light emitting chip 43, and the light distribution region outside the vehicle (left side in the horizontal direction) Since the outer second lens 31 is arranged to correspond to the region to be formed and the outer light emitting chip 42 is made to correspond, the inner second lens 32 and the outer second lens 31 can be arranged close to each other, The inner light emitting chip 43 and the outer light emitting chip 42 can be arranged close to each other.
Therefore, a configuration for forming one diffused light distribution pattern can be compactly assembled and arranged.

Furthermore, by providing the outer second lens 31 and the inner second lens 32, the outer light emitting chip 42 and the inner light emitting chip 43 can be disposed close to the first lens 21, so that the configuration can be made compact in the front-rear direction. Collective arrangement is possible.
As a result, the lamp unit 10 can be reduced in size, and the size of the vehicular lamp can be reduced.

  As described above, the present invention has been described based on the specific embodiments, but the present invention is not limited to the above-described embodiments, and has been modified or improved without departing from the technical idea. Are also included in the technical scope of the invention, which will be apparent to those skilled in the art from the scope of the claims.

DESCRIPTION OF SYMBOLS 10 Lamp unit 20 1st lens member 21 1st lens 22 1st exit surface 22a Outside 1st exit surface 22b Inside 1st exit surface 23 1st entrance surface 23a Outside 1st entrance surface 23b Inside 1st entrance surface 30 2nd lens Member 31 Outer second lens 31a Outer second exit surface 31b Outside second entrance surface 32 Inside second lens 32a Inside second exit surface 32b Inside second entrance surface 33 Connecting portion 40 Light source portion 41 Substrate 42 Outside light emitting chip 43 Inside light emission Chip B1 Outer second horizontal reference position B2 Inner second horizontal reference position C1 Cone C2 Cone PF1 Outer first rear focus PF2 Inner first rear focus PZ1 Outer first optical axis PZ2 Inner first optical axis SF1 Outer second rear Focus SF2 Inner second rear focus X Horizontal direction Y Vertical direction Z Lamp optical axes 101L, 101R Vehicle headlamp 102 Vehicle

Claims (7)

An outer first incident surface that forms an outer first optical axis outside the vehicle corresponding to the first exit surface, and an inner first incident surface that forms an inner first optical axis inside the vehicle corresponding to the first exit surface. A first lens having:
A semiconductor-type outer light emitting chip provided on the outer first optical axis;
A semiconductor-type inner light emitting chip provided on the inner first optical axis;
An outer second lens provided between the outer first incident surface and the outer light emitting chip;
An inner second lens provided between the inner first incident surface and the inner light emitting chip,
The outer second lens has an outer second rear focal point located on the front side of the outer first rear focal point of the first lens on the outer first optical axis;
The inner second lens has an inner second rear focal point located on the front side of the inner first rear focal point of the first lens on the inner first optical axis;
The outer light emitting chip is provided in the vicinity of the outer second rear focal point or the outer second rear focal point,
The vehicular lamp, wherein the inner light emitting chip is provided in the vicinity of the inner second rear focal point or the inner second rear focal point.   The vehicular lamp according to claim 1, wherein the first emission surface has a smooth surface shape without a step. The outer second lens is
An outer second entrance surface;
Corresponding to the outer second incident surface, and an outer second emitting surface formed in a surface shape for performing light distribution control for irradiating light from the outer light emitting chip to the outer first incident surface,
The inner second lens is
An inner second entrance surface;
In correspondence with the inner second incident surface, an inner second emitting surface formed in a surface shape for performing light distribution control for irradiating light from the inner light emitting chip onto the inner first incident surface. The vehicular lamp according to claim 1, wherein the vehicular lamp is provided. The outer second emission surface is configured to match the spread of light emitted from the outer light emitting chip with the spread of a cone connecting the outer first incident surface of the first lens and the outer first rear focal point of the first lens. The light having a shape and irradiating from the vehicle inner side of the second outer emission surface toward the outer first incident surface of the first lens is formed into a surface shape to irradiate the vehicle outer side,
The inner second emission surface is configured to match the spread of light emitted from the inner light emitting chip with the spread of a cone connecting the inner first incident surface of the first lens and the inner first rear focal point of the first lens. The light having a shape and irradiating from the vehicle outer side of the inner second exit surface toward the inner first incident surface of the first lens is formed into a surface shape that irradiates the vehicle inner side. The vehicular lamp according to claim 3. The outer first incident surface is located on the outer first rear focal point when the light from the outer point light source is incident on the outer first rear focal point without passing through the second outer lens. The light incident on the first lens from the first incident surface is formed into a surface shape that performs light distribution control so that the light emitted from the first emission surface to the front side is irradiated to the inside of the vehicle,
The inner first incident surface assumes the inner point light source on the inner first rear focal point, and the light from the inner point light source is incident on the inner first light source without passing through the inner second lens. It is formed in a surface shape that performs light distribution control so that the light incident on the first lens from the first incident surface is irradiated to the vehicle outer side from the first emission surface. The vehicular lamp according to any one of claims 1 to 4, wherein:   The outer first incident surface and the inner first incident surface irradiate the cut-off line side when light incident on the upper side in the vertical direction and the lower side in the vertical direction is irradiated on the front side from the first emission surface. In addition, when the light incident on the center in the vertical direction is irradiated from the first emission surface to the front side, the light distribution is controlled so that the light distribution is controlled to be irradiated below the light distribution pattern. The vehicular lamp according to any one of claims 1 to 5.   The vehicular lamp according to any one of claims 1 to 6, further comprising a second lens member in which the outer second lens and the inner second lens are integrally formed.

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