JP2009238470A - Vehicular head lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular head lamp for avoiding the appearance of darkness on a low beam distribution pattern as a result that part of light to form the low beam distribution pattern is injected into the lens cut surfaces of a projection lens. <P>SOLUTION: The vehicular head lamp 100 includes the projection lens 10 arranged on the optical axis of a lamp fitting. The projection lens has an incident plane to form the low beam distribution pattern, a convex lens surface as an emission plane for emitting light which is injected from the incident plane to form the low beam distribution pattern, and lens cut surfaces 13R, 13L for reflecting light which is injected from the incident plane to form an overhead distribution pattern, in the upward direction of the low beam distribution pattern to form the overhead distribution pattern. The lens cut surfaces are formed on a portion of the projection lens where the light to form the low beam distribution pattern is not transmitted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicular headlamp, and more particularly to a vehicular headlamp in which a shadow portion does not appear in a low beam light distribution pattern (an unevenness in a low beam light distribution pattern does not occur).

  Conventionally, a vehicular headlamp that forms a light distribution pattern for passing beams and a light distribution pattern for overhead is known (see, for example, Patent Document 1).

  FIG. 6 is a side view for explaining the vehicle headlamp described in Patent Document 1. FIG.

  As shown in FIG. 6, the vehicle headlamp described in Patent Document 1 includes a projection lens 10 ′, a light source 20 ′, a shade 30 ′ disposed between the projection lens 10 ′ and the light source 20 ′, and a light source 20 ′. The first reflection surface 40 'that reflects light from the light source 20' and the shade 30 'is disposed above the shade 30', and the second reflection that reflects the reflected light from the first reflection surface 40 '. Surface 50 'etc. are provided.

  In the projector type headlamp described in Patent Document 1, the light from the light source 20 ′ is reflected by the first reflecting surface 40 ′ and condensed near the focal point F ′ of the projection lens 10, and then the projection lens 10. ′ Is transmitted, and a light distribution pattern for a passing beam having a cutoff line defined by the shade 30 ′ is formed.

  Further, the light from the light source 20 ′ is reflected by the first reflecting surface 40 ′, and a part of the reflected light is reflected by the second reflecting surface 50 ′ toward the upper side of the passing beam light distribution pattern, An overhead light distribution pattern is formed above the passing beam light distribution pattern.

In the projector type headlamp described in Patent Document 1, the projection lens 10 is arranged as shown in FIG. 7A without arranging the second reflecting surface 50 ′ above the shade 30 ′ as described above. A lens cut surface 11 ′ is formed below ′, and a part of the reflected light from the first reflection surface 40 ′ is reflected by the lens cut surface 11 ′ toward the upper side of the low beam light distribution pattern P 1 ′ As shown in FIG. 7B, an overhead light distribution pattern P2 ′ may be formed above the low beam light distribution pattern P1 ′.
JP 2008-21463 A

  However, when the lens cut surface 11 ′ is formed below the projection lens 10 ′, a part of the reflected light from the first reflecting surface 40 ′ (a part of the light for forming the passing beam light distribution pattern) is present. The light enters the cut surface 11 '.

  A part of the reflected light from the first reflecting surface 40 ′ incident on the cut surface 11 ′ (a part of the light for forming the passing beam light distribution pattern) is reflected by the cut surface 11 ′ and used for overhead. It is used for forming the light distribution pattern P2 ′. For this reason, as shown in FIG. 7B, a shadow portion S ′ appears under the low beam light distribution pattern P1 ′ (unevenness occurs in the low beam light distribution pattern P1 ′). There is.

  The present invention has been made in view of such circumstances, and is caused by the fact that part of the light for forming the light distribution pattern for passing beam is incident on the lens cut surface formed on the projection lens. An object of the present invention is to provide a vehicular headlamp in which a shadow portion does not appear in the light distribution pattern for the passing beam (an unevenness in the light distribution pattern for the passing beam does not occur).

  In order to solve the above-mentioned problem, the invention according to claim 1 is a vehicle headlamp including a projection lens arranged on a lamp optical axis, wherein the projection lens forms a light distribution pattern for a passing beam. An incident surface on which light for forming the light distribution pattern for light and an overhead light distribution pattern is incident, and a convex lens surface that is an output surface for emitting light for forming the light distribution pattern for the low beam incident from the incident surface; And a lens cut surface for reflecting the light for forming the overhead light distribution pattern incident from the incident surface toward the upper side of the low beam light distribution pattern to form the overhead light distribution pattern. The lens cut surface is formed in a portion of the projection lens that does not transmit light for forming the light distribution pattern for the passing beam. And said that you are.

  According to the first aspect of the present invention, the lens cut surface does not transmit light for forming a light distribution pattern for a passing beam between the incident surface and the convex lens surface that is the exit surface of the projection lens. A portion (that is, a region other than a region where light for forming a light distribution pattern for passing beam on the incident surface of the projection lens is incident and a light distribution pattern for passing beam on the exit surface of the projection lens are formed. Projection lens part between the region other than the region where the light is emitted, such as a region other than the region where the light for forming the light distribution pattern for passing beam is formed on the exit surface of the projection lens Has been.

  Therefore, according to the first aspect of the present invention, the light for forming the light distribution pattern for passing beam does not enter the lens cut surface.

  Therefore, according to the first aspect of the present invention, a part of the light for forming the passing beam light distribution pattern is incident on the lens cut surface, so that the shadow beam light distribution pattern has a shadow. It is possible to prevent a portion from appearing (unevenness in the light distribution pattern for the passing beam).

  The invention according to claim 2 is the invention according to claim 1, wherein the lens cut surface has a vertical axis of 0 ° below the optical axis of the convex lens surface of the convex lens surface, At least one of a region having a central angle of +25 to 60 ° or a region of −25 to 60 ° with respect to the lower vertical axis, and a circle having a diameter D that is an outline of the convex lens surface, and a circle having the diameter D And a circle surrounded by a circle having a diameter D × 0.85 that is concentric with each other.

  According to the second aspect of the present invention, the lens cut surface is a portion that does not transmit light for forming a light distribution pattern for passing beam between the incident surface and the convex lens surface that is the exit surface (out of the convex lens surface). The vertical axis below the optical axis of the convex lens surface is 0 °, and at least one of the region having a central angle of +25 to 60 ° or the region of −25 to 60 ° with respect to the lower vertical axis And a region surrounded by a circle having a diameter D which is an outline of the convex lens surface and a circle having a diameter D × 0.85 which is concentric with the circle having the diameter D).

  For this reason, according to the second aspect of the present invention, the light for forming the light distribution pattern for the passing beam does not enter the lens cut surface.

  Therefore, according to the second aspect of the present invention, a part of the light for forming the passing beam light distribution pattern is incident on the lens cut surface, so that the shadow beam light distribution pattern has a shadow. It is possible to prevent a portion from appearing (unevenness in the light distribution pattern for the passing beam).

  According to a third aspect of the present invention, there is provided the projection lens disposed on the lamp optical axis, the light source disposed on the lamp optical axis, and the projection lens in a state where the upper edge is positioned near the focal point of the projection lens. A shade disposed between the light source and the light source, and the light that is disposed so as to surround the light source, reflects light for forming a light distribution pattern for a passing beam out of the light from the light source, and is a focal point of the projection lens After condensing in the vicinity, the first reflecting surface that transmits the projection lens and forms a light distribution pattern for a passing beam, and is disposed below the optical axis of the light source, of the light from the light source A vehicular headlamp comprising: a second reflecting surface that reflects light for forming an overhead light distribution pattern that extends downward from the optical axis of the light source; and the projection lens includes the first reflecting surface Passing light that is reflected light from A light incident surface on which light for forming a light distribution pattern for a light beam and light for forming a light distribution pattern for overhead, which is reflected light from the second reflective surface, are incident, and for a low beam incident from the incident surface A convex lens surface that is an exit surface that emits light for forming a light distribution pattern, and light for forming an overhead light distribution pattern incident from the incident surface is directed above the light distribution pattern for the low beam. A lens cut surface for reflecting and forming a light distribution pattern for overhead, and light for forming a light distribution pattern for overhead which is reflected light from the second reflection surface on the shade. An aperture for allowing the light to pass through and incident on the lens cut surface is formed, and the lens cut surface is the low beam of the projection lens. And a light for forming a light distribution pattern is formed in a portion which does not transmit.

  According to the third aspect of the present invention, the lens cut surface does not transmit light for forming a light distribution pattern for a passing beam between the incident surface and the convex lens surface that is the exit surface of the projection lens. A portion (that is, a region other than a region where light for forming a light distribution pattern for passing beam on the incident surface of the projection lens is incident and a light distribution pattern for passing beam on the exit surface of the projection lens are formed. Projection lens part between the region other than the region where the light is emitted, such as a region other than the region where the light for forming the light distribution pattern for passing beam is formed on the exit surface of the projection lens Has been.

  Therefore, according to the third aspect of the present invention, the light for forming the light distribution pattern for the passing beam does not enter the lens cut surface.

  Therefore, according to the third aspect of the present invention, a part of the reflected light from the first reflecting surface (a part of the light for forming the passing beam light distribution pattern) enters the lens cut surface. As a result, it is possible to prevent a shadow portion from appearing in the light distribution pattern for passing beam (unevenness occurs in the light distribution pattern for passing beam).

  According to a fourth aspect of the present invention, in the invention of the third aspect, the lens cut surface has a vertical axis below the optical axis of the convex lens surface of the convex lens surface of 0 °. At least one of a region having a central angle of +25 to 60 ° or a region of −25 to 60 ° with respect to the lower vertical axis, and a circle having a diameter D that is an outline of the convex lens surface, and a circle having the diameter D And a circle surrounded by a circle having a diameter D × 0.85 that is concentric with each other.

  According to the invention described in claim 4, the lens cut surface is a portion through which light for forming a light distribution pattern for passing beam between the incident surface and the convex lens surface that is the output surface is not transmitted (out of the convex lens surface). The vertical axis below the optical axis of the convex lens surface is 0 °, and at least one of the region having a central angle of +25 to 60 ° or the region of −25 to 60 ° with respect to the lower vertical axis And a region surrounded by a circle having a diameter D which is an outline of the convex lens surface and a circle having a diameter D × 0.85 which is concentric with the circle having the diameter D).

  Therefore, according to the fourth aspect of the present invention, the light for forming the light distribution pattern for the passing beam does not enter the lens cut surface.

  Therefore, according to the fourth aspect of the present invention, a part of the reflected light from the first reflecting surface (a part of the light for forming the passing beam light distribution pattern) enters the lens cut surface. As a result, it is possible to prevent a shadow portion from appearing in the light distribution pattern for passing beam (unevenness occurs in the light distribution pattern for passing beam).

  According to the present invention, a part of light for forming the light distribution pattern for the passing beam is incident on the lens cut surface formed on the projection lens, so that a shadow portion is formed on the light distribution pattern for the passing beam. It is possible to provide a vehicular headlamp that does not appear (no unevenness in the light distribution pattern for the passing beam).

  Hereinafter, a vehicle headlamp according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view for explaining a main configuration of a vehicle headlamp according to the present embodiment. FIG. 2 is a side view of the vehicle headlamp shown in FIG.

  The vehicle headlamp 100 of this embodiment is applied to a headlamp such as a headlamp of a vehicle such as an automobile and an auxiliary lamp such as a fog lamp. As shown in FIGS. 1 and 2, a projection lens is used. 10, a light source 20, a shade 30 disposed between the projection lens 10 and the light source 20, a first reflection surface 40, second reflection surfaces 50 </ b> R and 50 </ b> L, and the like.

  The projection lens 10 includes an entrance surface 11, an exit surface 12, and lens cut surfaces 13R and 13L, and has a focal point F on the light source 20 side (incident surface 11 side) as shown in FIG. The projection lens 10 is arranged in a state where its optical axis is matched with the lamp optical axis AX.

  The incident surface 11 is used to form a light distribution pattern for passing beam that is reflected light from the first reflecting surface 40 and an overhead light distribution pattern that is reflected light from the second reflecting surface 50. An incident surface as a light entrance through which light enters the projection lens 10 is formed as a flat surface.

  The exit surface 12 is an exit surface from which light for forming a light distribution pattern for a passing beam that has entered the projection lens 10 from the entrance surface 11 exits, and is formed as a convex lens surface.

  The lens cut surfaces 13R and 13L reflect light for forming an overhead light distribution pattern, which is reflected light from the reflection surface 40 incident on the projection lens 10, toward the upper side of the low beam light distribution pattern. As described later, the reflected light from the reflecting surface 40 between the entrance surface 11 and the convex lens surface that is the exit surface 12 of the projection lens 10 (forms a light distribution pattern for a passing beam). Is formed in a lens portion that does not transmit light.

  The light source 20 is, for example, a light source bulb such as an incandescent bulb or a halogen lamp, an HID, or an LED light source such as an LED package in which a plurality of single-color or RGB three-color or one LED chips are packaged. As shown in FIG. 1, when the light source 20 is a light source bulb such as an incandescent lamp or HID, the light source 20 is arranged on the lamp optical axis AX with the longitudinal direction thereof being along the lamp optical axis AX.

  The shade 30 is a member for shielding a part of the reflected light from the first reflecting surface 40 and forming a cut-off line of the light distribution pattern for the passing beam, and projects the upper edge 31 as shown in FIG. The lens 10 is disposed between the projection lens 10 and the light source 20 while being positioned near the focal point F of the lens 10. In order to form a light distribution pattern for overhead, which is reflected light from the second reflecting surfaces 50R and 50L, on each straight line connecting the second reflecting surfaces 50R and 50L of the shade 30 and the lens cut surfaces 13R and 13L. Openings 32R and 32L for allowing the light to pass therethrough are formed.

  The first reflection surface 40 is a reflection surface that reflects light for forming a light distribution pattern for passing beam among the light from the light source 20, and is disposed so as to surround the light source 20. In the first reflecting surface 40, for example, the first focal point is set in the vicinity of the light source 20 (position indicated by F1 in FIG. 2), and the second focal point is in the vicinity of the focal point F of the projection lens 10 (position indicated by F2 in FIG. 2). It is a set spheroid reflection surface.

  Reflected light from the first reflecting surface 40 (light for forming the light distribution pattern for the passing beam) is collected near the focal point F of the projection lens 10 and then the curve C shown in FIG. Is incident on the inside of the projection lens 10 from a region Ac surrounded by the symbol. Reflected light from the first reflecting surface 40 that has entered the projection lens 10 (light for forming a passing beam light distribution pattern) passes through the projection lens 10 and is shown in FIG. As shown in FIG. 4, the light distribution pattern P1 for the passing beam is formed from the region Ac surrounded by the curve C shown.

  In the present embodiment, the lens cut surfaces 13 </ b> R and 13 </ b> L are reflected light (light distribution pattern for passing beam) from the reflection surface 40 between the incident surface 11 and the convex lens surface that is the exit surface 12 of the projection lens 10. A portion of the incident surface 11 of the projection lens 10 other than the region Ac where the light for forming the light distribution pattern for passing the beam is incident, and the projection lens 10. The lens portion between the exit surface 12 and a region other than the region Ac from which light for forming the light distribution pattern for passing beam is emitted, for example, for the passing beam of the exit surface 12 of the projection lens 10. It is formed in a region other than the region Ac from which light for forming a light distribution pattern is emitted.

  Specifically, as shown in FIG. 3, the lens cut surfaces 13 </ b> R and 13 </ b> L have a vertical axis V of 0 ° below the optical axis AX of the exit surface 12 of the exit surface 12. A sector region having a central angle of +25 to 60 ° and a sector region having a center angle of −25 to 60 ° with respect to V (0 °), and a circle having a diameter D as an outline of the exit surface 12 and a circle having the diameter D are concentric. It is formed in regions AR and AL (regions indicated by oblique lines in FIG. 3) surrounded by a circle having a diameter of D × 0.85. 5A is a cross-sectional view of the AA section of the projection lens 10 shown in FIG. 3 as viewed from the direction of the arrow, and FIG. 5B is a BB cross section of the projection lens 10 shown in FIG. It is sectional drawing seen from the arrow direction.

  In this way, the lens cut surfaces 13R and 13L form the reflected light (passing beam light distribution pattern) from the reflecting surface 40 between the incident surface 11 and the convex lens surface that is the exit surface 12 of the projection lens 10. (In this embodiment, areas AR and AL indicated by oblique lines in FIG. 3 on the exit surface 12).

  For this reason, the light for forming the light distribution pattern for the passing beam, which is the reflected light from the first reflecting surface 40, is incident on the areas AR and AL (lens cut surfaces 13R and 13L) indicated by oblique lines in FIG. There is no.

  Accordingly, a part of the reflected light from the first reflecting surface 40 (a part of the light for forming the light distribution pattern for the passing beam) is incident on the lens cut surfaces 13R and 13L. It is possible to prevent a shadow portion from appearing in the light distribution pattern P1 (unevenness occurs in the light distribution pattern P1 for the passing beam).

  In the present embodiment, due to the characteristics of the light source 20, as shown in FIG. 2, there is light that goes from the light source 20 to below the lamp optical axis AX, which is not used for forming the light distribution pattern for the passing beam. The second reflecting surfaces 50R and 50L reflect light (light for forming an overhead light distribution pattern) from the light source 20 below the lamp optical axis AX toward the lens cut surfaces 13R and 13L. It is a reflective surface, and is disposed below the lamp optical axis AX (in FIG. 2, an example directly below the light source 20 is illustrated). The second reflective surfaces 50R and 50L enable effective use of light traveling from the light source 20 below the lamp optical axis AX.

  Reflected light from the second reflecting surfaces 50R and 50L (light for forming a light distribution pattern for overhead) passes through the openings 32R and 32L formed in the shade 30, and is shown in FIG. The light enters the projection lens 10 from areas AR and AL (areas indicated by oblique lines in FIG. 3) other than the area Ac surrounded by the curve C. Reflected light (light for forming an overhead light distribution pattern) that has entered the projection lens 10 from the second reflecting surfaces 50R and 50L passes through the projection lens 10 and is shown in FIG. 4 is incident on the lens cut surfaces 13R and 13L formed in the areas AR and AL indicated by the middle oblique lines, and is reflected by the lens cut surfaces 13R and 13L toward the upper side of the light distribution pattern for the low beam, as shown in FIG. Then, the overhead light distribution pattern P2 is formed.

  As described above, according to the vehicle headlamp 100 of the present embodiment, the lens cut surfaces 13R and 13L are located between the incident surface 11 and the convex lens surface that is the exit surface 12 in the projection lens 10. The lens portion through which the reflected light from the reflecting surface 40 (light for forming the passing beam light distribution pattern) does not pass (that is, for forming the passing beam light distribution pattern on the incident surface 11 of the projection lens 10). Between the areas AR and AL other than the area Ac where the light is incident and the areas AR and AL other than the area Ac where the light for forming the light distribution pattern for passing beam is formed on the emission surface 12 of the projection lens 10. For example, the lens portion of the projection lens 10 is formed in the areas AR, AL) other than the area Ac where the light for forming the light distribution pattern for passing beam is emitted. To have.

  For this reason, according to the vehicle headlamp 100 of the present embodiment, the light for forming the passing beam light distribution pattern does not enter the lens cut surfaces 13R and 13L.

  Therefore, according to the vehicle headlamp 100 of the present embodiment, a part of the reflected light from the first reflecting surface 40 (a part of the light for forming the passing beam light distribution pattern) is converted into the lens cut surface 13R. , 13L, it is possible to prevent a shadow portion from appearing in the passing beam light distribution pattern P1 (unevenness in the passing beam light distribution pattern P1).

  Next, a modified example will be described.

  In the above embodiment, two second reflecting surfaces 50R and 50L are used, two openings 32R and 32L are formed in the shade 30, and two lens cut surfaces 13R and 13L are formed on the exit surface 12. Although an example in which the headlamp 100 is configured has been described, the present invention is not limited to this. For example, by using one second reflecting surface 50R or 50L, forming one opening 32R or 32L in the shade 30, and forming one lens cut surface 13R or 13L on the exit surface 12, a vehicle headlamp 100 may be configured.

  In the above embodiment, the lens cut surfaces 13R and 13L are described as being formed on the exit surface 12, but the present invention is not limited to this. For example, the lens cut surfaces 13R and 13L may be formed in regions AR and AL other than the region Ac surrounded by the curve C shown in FIG.

  In short, the lens cut surfaces 13R and 13L form the reflected light (passing beam light distribution pattern) from the reflecting surface 40 between the incident surface 11 and the convex lens surface which is the exit surface 12 of the projection lens 10. Lens portions that do not transmit light (that is, regions AR and AL (regions indicated by oblique lines in FIG. 3) other than the region Ac on which light for forming the light distribution pattern for passing beam of the incident surface 11 is incident). And the projection lens 10 portion between the areas AR and AL (areas shown by hatching in FIG. 3) other than the area Ac where the light for forming the light distribution pattern for passing beam on the emission surface 12 is emitted. It only has to be formed.

  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.

It is a perspective view for demonstrating the main structures of the vehicle headlamp of this embodiment. It is a side view of the vehicle headlamp shown in FIG. FIG. 4 is a diagram for explaining a region for forming a lens cut surface 13 in the projection lens 10. It is a figure for demonstrating the light distribution pattern P1 for passing beams and the light distribution pattern P2 for overhead formed with the vehicle headlamp 100. FIG. 1 is a sectional view of a projection lens 10. FIG. It is a figure for demonstrating the conventional vehicle headlamp. It is a figure for demonstrating the problem at the time of forming a lens cut surface in a projection lens.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Vehicle headlamp, 10 ... Projection lens, 11 ... Incident surface, 12 ... Output surface, 13R, 13L ... Lens cut surface, 20 ... Light source, 30 ... Shade, 31 ... Upper edge, 32R, 32L ... Opening, 40 ... 1st reflective surface, 50R, 50L ... 2nd reflective surface

Claims (4)

In a vehicle headlamp including a projection lens disposed on a lamp optical axis,
The projection lens forms an incident surface on which light for forming the light distribution pattern for passing beam and light for forming the light distribution pattern for overhead are incident, and a light distribution pattern for the passing beam incident from the incident surface. And a convex lens surface that is an output surface for emitting light to be reflected, and light for forming an overhead light distribution pattern incident from the incident surface is reflected toward the upper side of the low beam light distribution pattern and is distributed for overhead. A lens cut surface for forming a light pattern,
The vehicular headlamp, wherein the lens cut surface is formed in a portion of the projection lens that does not transmit light for forming the passing beam light distribution pattern.   The lens cut surface is a region having a central angle of +25 to 60 ° with respect to the lower vertical axis, with a vertical axis lower than the optical axis of the convex lens surface being 0 °. A region surrounded by a circle having a diameter D that is an outline of the convex lens surface and a circle having a diameter D × 0.85 that is concentric with the circle having the diameter D; The vehicle headlamp according to claim 1, wherein the vehicle headlamp is formed as follows. A projection lens arranged on the lamp optical axis;
A light source disposed on the lamp optical axis;
A shade disposed between the projection lens and the light source with the upper edge positioned near the focal point of the projection lens;
The projection lens is disposed so as to surround the light source, reflects light for forming a light distribution pattern for a passing beam out of the light from the light source, and condenses the projection lens in the vicinity of the focal point of the projection lens. A first reflecting surface that transmits and forms a light distribution pattern for the passing beam;
A second reflecting surface that is disposed below the optical axis of the light source and reflects light for forming an overhead light distribution pattern that is directed downward from the optical axis of the light source out of the light from the light source;
In vehicle headlamps equipped with
The projection lens forms light for forming a light distribution pattern for passing beam that is reflected light from the first reflecting surface and light distribution pattern for overhead that is reflected light from the second reflecting surface. Forms an incident surface on which light is incident, a convex lens surface that is an exit surface for emitting light for forming a light distribution pattern for a passing beam incident from the incident surface, and an overhead light distribution pattern that is incident from the incident surface A lens cut surface for reflecting the light to be directed upward of the light distribution pattern for the passing beam and forming a light distribution pattern for overhead, and
The shade is formed with an opening for allowing light for forming an overhead light distribution pattern, which is reflected light from the second reflecting surface, to enter the lens cut surface.
The vehicular headlamp, wherein the lens cut surface is formed in a portion of the projection lens that does not transmit light for forming the passing beam light distribution pattern.   The lens cut surface is a region having a central angle of +25 to 60 ° with respect to the lower vertical axis, with a vertical axis lower than the optical axis of the convex lens surface being 0 °. A region surrounded by a circle having a diameter D that is an outline of the convex lens surface and a circle having a diameter D × 0.85 that is concentric with the circle having the diameter D; The vehicle headlamp according to claim 3, wherein the vehicle headlamp is formed.

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