Vehicle lamp

Abstract

A vehicle lamp according to the present invention comprises a light source (2), a first lens body (3), and a second lens body (4), wherein: the first lens body (3) includes a first entry part (6) and a first emitting part (7); the first entry part (6) has a lens shape which allows light (L) emitted from the light source (2) to enter the first lens body (3) such that the light (L) emitted from the light source (2) converges at a focal point (S1) positioned in the first lens body (3) and then diffuses from the focal point (S1) toward the first emitting part (7); and the first emitting part (7) has a first emitting surface (7a) from which light (L1) that is included in the light (L) emitted from the light source (2) and that is in a central region (E1) including the optical axis (AX) is emitted while being refracted in the diffusion direction and a second emitting surface (7b) from which light (L2) that is in a region (E2) surrounding the central region (E1) is emitted while being refracted in the convergence direction.

Description

Vehicle lighting fixtures

[0001] This application claims priority from Japanese Patent Application No. 2024-109708, filed on July 8, 2024, the contents of which are incorporated herein by reference.

[0002] For example, a vehicle lighting fixture such as a vehicle headlamp includes a light source, a reflector that reflects light emitted from the light source in the direction of travel of the vehicle, a shade that blocks (cuts) part of the light reflected by the reflector, and a projection lens that projects the light that has been cut by the shade in the direction of travel of the vehicle.

[0003] In such vehicle lighting fixtures, a low beam light distribution pattern including a cutoff line at the upper end is formed as a passing beam (low beam) by inverting and projecting the light source image defined by the front end of the shade using a projection lens.

[0004] In addition, in vehicle lighting fixtures, a separate light source that emits light in the direction of vehicle travel is placed below the shade, and the light emitted from this light source is projected by a projection lens as a driving beam (high beam), forming a high beam light distribution pattern above the low beam light distribution pattern.

[0005] Furthermore, in the field of vehicle lighting, development is underway on adaptive beam distribution headlamps (ADBs), which are equipped with multiple light sources arranged in a row in the vehicle width direction and a projection lens that projects light emitted from the multiple light sources toward the front of the vehicle, and which variably control the light distribution pattern of the light projected by the projection lens by switching on and off the multiple light sources. ADB is a technology that uses an on-board camera to recognize vehicles ahead, oncoming vehicles, pedestrians, etc., and expands the driver's forward field of view at night without dazzling the driver or pedestrians in front.

[0006] Incidentally, Patent Document 1 listed below discloses a vehicle lamp comprising: an optical system including a front lens body extending in a predetermined direction inclined at a predetermined angle with respect to the horizontal when viewed from the front; a rear lens portion arranged behind the front lens body; and a light source arranged behind the rear lens portion, emitting light that passes through the rear lens portion and the front lens body in this order and is irradiated forward to form a light distribution pattern for a headlamp; wherein the rear lens portion is a lens portion that focuses light from the light source that passes through the rear lens portion in a first direction; the front lens body is a lens portion that focuses light from the rear lens portion that passes through the front lens body in a second direction orthogonal to the first direction; and at least one light diffusion element is set in a region of the front lens body through which light from the optical system passes, for diffusing the light from the optical system in at least one direction of the predetermined direction and a direction orthogonal to the predetermined direction.

[0007] Japanese Patent Application Publication No. 2019-121469

[0008] However, in the vehicle lamp described in Patent Document 1, although the height of the optical system can be reduced and the screen projection image can be made small, the optical system becomes long in the front-to-rear direction, making it difficult to reduce the overall size.

[0009] An aspect of the present invention provides a vehicle lamp that allows further miniaturization and also allows a good light distribution pattern to be obtained.

[0010] The present invention provides the following configuration: [1] A vehicle lamp including: a light source that emits light radially forward; a first lens body disposed in front of the light source; and a second lens body disposed in front of the first lens body, the vehicle lamp projecting the light emitted from the light source toward the front of the vehicle via the first lens body and the second lens body, the first lens body including a first incident portion located on a side facing the light source and a first exit portion located on an opposite side to the first incident portion, the first incident portion having a lens shape that causes the light emitted from the light source to enter the inside of the first lens body so that the light emitted from the light source is focused at a focusing point located inside the first lens body and then diffused from the focusing point toward the first exit portion, The vehicle lamp according to claim 1, wherein the first emission portion has, in a vertical cross section including the optical axis of the light emitted from the light source, a first emission surface that refracts light from a central region including the optical axis of the light emitted from the light source in a diverging direction toward the second lens body and emits the light to the outside of the first lens body, and a second emission surface that refracts light from a peripheral region surrounding the periphery of the central region in a converging direction toward the second lens body and emits the light to the outside of the first lens body. [2] The vehicle lamp according to claim 1, wherein the first emission surface is formed by a concave lens surface, and the second emission surface is formed by a ring-shaped convex lens surface that surrounds the periphery of the concave lens surface. [3] The vehicle lamp according to claim 1, wherein a composite focal point of the second lens body and the first emission portion substantially coincides with the converging point. [4] The vehicle lamp according to [1], wherein the second lens body includes a second incident portion located on the side opposite to the first exit portion in the vertical cross section, and a second exit portion located on the opposite side to the second incident portion, the second incident portion refracting the light emitted from the first exit portion toward the optical axis while the light enters the interior of the second lens body, and the second exit portion refracting the light incident from the second incident portion in a direction parallel to the optical axis while the light exits to the outside of the second lens body.[5] The vehicular lamp according to [4], wherein the second incident portion has a first convex lens surface provided corresponding to an area onto which light emitted from the first exit surface is incident, and a second convex lens surface provided corresponding to an area onto which light emitted from the second exit surface is incident, the first convex lens surface having a greater positive refractive power than the second convex lens surface. [6] The vehicular lamp according to [1], wherein the first incident portion has a first incident surface located at a center of a portion facing the light source, on which light from the central area is incident while being concentrated toward the light concentration point, a second incident surface located on an inner circumferential side of a protrusion that protrudes toward the light source from a position surrounding the first incident surface, on which light from the peripheral area is incident, and a reflecting surface located on an outer circumferential side of the protrusion that reflects the light incident from the second incident surface while being concentrated toward the light concentration point.

[0011] According to an aspect of the present invention, a vehicle lamp that can be further miniaturized and can obtain a good light distribution pattern is provided.

[0012] Fig. 1 is a vertical cross-sectional view showing the configuration of a lamp unit provided in a vehicle lamp according to one embodiment of the present invention; Fig. 2 is a horizontal cross-sectional view showing the configuration of the lamp unit shown in Fig. 1; Fig. 3 is a vertical cross-sectional view showing the configuration of the lamp unit shown in Example 1; Fig. 4 is a luminous intensity distribution diagram showing a light distribution pattern formed by the lamp unit shown in Example 1; Fig. 5 is a vertical cross-sectional view showing the configuration of the lamp unit shown in Comparative Example 1; Fig. 6 is a luminous intensity distribution diagram showing a light distribution pattern formed by the lamp unit shown in Comparative Example 1; Fig. 7 is a vertical cross-sectional view showing the configuration of the lamp unit shown in Comparative Example 2; Fig. 8 is a luminous intensity distribution diagram showing a light distribution pattern formed by the lamp unit shown in Comparative Example 2;

[0013] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the dimensions and the like exemplified in the following description are merely examples, and the present invention is not necessarily limited thereto. Appropriate changes can be made within the scope of the present invention.

[0014] As an embodiment of the present invention, the configuration of a vehicle lamp 1 shown in Figures 1 and 2 will be described. Figure 1 is a vertical cross-sectional view showing the configuration of a lamp unit 20 provided in the vehicle lamp 1. Figure 2 is a horizontal cross-sectional view showing the configuration of the lamp unit 20.

[0015] In addition, in the drawings shown below, an XYZ Cartesian coordinate system is set up, with the X-axis direction representing the front-to-rear direction (length direction) of the vehicle lighting fixture 1, the Y-axis direction representing the left-to-right direction (width direction) of the vehicle lighting fixture 1, and the Z-axis direction representing the up-to-down direction (height direction) of the vehicle lighting fixture 1.

[0016] The vehicle lighting fixture 1 of this embodiment is a vehicle headlamp mounted on both corners of the front end of a vehicle (not shown), and emits a passing beam (low beam) that forms a low beam light distribution pattern including a cut-off line at the upper end, and a driving beam (high beam) that forms a high beam light distribution pattern above the low beam light distribution pattern, toward the front of the vehicle (in the +X-axis direction).

[0017] Among these, the vehicle lamp 1 of this embodiment is an application of the present invention to an adjustable beam headlamp (ADB) that variably controls the light distribution pattern of light L projected forward from the vehicle.

[0018] Specifically, as shown in FIGS. 1 and 2, the vehicle lamp 1 includes a lamp unit 20 for ADB arranged inside a lamp body (not shown).

[0019] In the ADB, these lamp units 20 are arranged in a row across the width of the vehicle (hereinafter referred to as the "vehicle width direction"), and by switching the lighting of each lamp unit 20 on and off, it is possible to variably control the light distribution pattern of the light L projected in front of the vehicle.

[0020] The lamp unit 20 of this embodiment comprises a light source 2 that radially emits light L forward, a first lens body 3 arranged in front of the light source 2, and a second lens body 4 arranged in front of the first lens body 3.

[0021] The lamp unit 20 of this embodiment has a configuration in which the optical axis AX of the light L emitted from the light source 2 and the central axes of the first lens body 3 and the second lens body 4 coincide with each other.

[0022] The light source 2 is formed of, for example, a light emitting diode (LED) that emits white light, and emits light L radially toward the first lens body 3 in front. Note that, in addition to the LED described above, the light source 2 may also be a light emitting element such as a laser diode (LD).

[0023] The first lens body 3 is made of a light-transmitting material such as a transparent resin such as polycarbonate or acrylic, or glass. The first lens body 3 has a substantially cylindrical light guide 5 extending in a direction along the optical axis AX, a first incident portion 6 located on the side of the light guide 5 facing the light source 2 (rear side), and a first exit portion 7 located on the side of the light guide 5 opposite the first incident portion 6 (front side).

[0024] The first incident section 6 has a lens shape that causes the light L emitted from the light source 2 to enter the inside of the light-guiding section 5 so that the light L is focused at a focusing point S1 on the optical axis AX located inside the light-guiding section 5 (first lens body 3), and then diffuses from this focusing point S1 toward the first exit section 7.

[0025] Specifically, the first incident portion 6 has a first incident surface 6a located at the center of the portion of the light guide portion 5 facing the light source 2, on which light (hereinafter referred to as "first light") L1 of a central region E1 including the optical axis AX, out of the light L radially emitted from the light source 2, enters while being focused toward a focusing point S1; a second incident surface 6b located on the inner periphery of the protrusion 5a that protrudes toward the light source 2 side (rear side) from a position surrounding the periphery of the first incident surface 6a of the light guide portion 5, on which light (hereinafter referred to as "second light") L2 of a peripheral region E2 surrounding the periphery of the central region E1 enters; and a reflecting surface 6c located on the outer periphery of the protrusion 5a, which reflects the second light L2 incident from the second incident surface 6b while being focused toward the focusing point S1.

[0026] As shown in FIG. 1 , in a vertical cross section (hereinafter referred to as the “vertical cross section”) including the optical axis AX of the light L emitted from the light source 2 of the light guide section 5, the first emission section 7 has a first emission surface 7a provided corresponding to a central region E1 into which the first light L1 of the light L emitted from the light source 2 is mainly incident, and a second emission surface 7b provided corresponding to a peripheral region E2 into which the second light L2 is mainly incident.

[0027] The first light exit surface 7a is formed by a concave lens surface that is curved inwardly concavely at the center of the front side of the light guide unit 5. On the other hand, the second light exit surface 7b is formed by a ring-shaped convex lens surface that is curved outwardly convexly so as to surround the periphery of the concave lens surface.

[0028] 1, the first light exit surface 7a mainly refracts the first light L1 in a direction away from the optical axis AX toward the second lens body 4 in front (hereinafter referred to as the "diffusion direction"), and emits the first light L1 to the outside of the first lens body 3. On the other hand, the second light exit surface 7b mainly refracts the second light L2 in a direction approaching the optical axis AX toward the second lens body 4 in front (hereinafter referred to as the "converging direction"), and emits the second light L2 to the outside of the first lens body 3.

[0029] In addition, the first exit surface 7a is not limited to the concave lens surface described above, and may be formed as a flat surface so that the first light L1 is refracted in a diffusing direction toward the second lens body 4 in front.

[0030] On the other hand, as shown in FIG. 2 , the first emission section 7 is formed by a convex lens surface that is curved outward in a horizontal cross section (hereinafter referred to as the “horizontal cross section”) that includes the optical axis AX of the light L emitted from the light source 2 of the light guide section 5.

[0031] As a result, in the horizontal cross section of the first lens body 3 shown in Figure 2, the first emission section 7 emits the first and second light L1, L2 (light L) to the outside of the first lens body 3 while concentrating the light toward the second lens body 4 in front.

[0032] The second lens body 4 is made of a light-transmitting material such as a transparent resin such as polycarbonate or acrylic, or glass. The second lens body 4 has a second incident portion 8 located on the side facing the first exit portion 7 (rear side), and a second exit portion 9 located on the opposite side to the second incident portion 8 (front side).

[0033] The second incident portion 8 has, in the vertical cross section of the second lens body 4 shown in Figure 1, a first convex lens surface 8a provided corresponding to the central region E1 where the first light L1 emitted from the first exit surface 7a is mainly incident, and a second convex lens surface 8b provided corresponding to the peripheral region E2 where the second light L2 emitted from the second exit surface 7b is mainly incident.

[0034] The first convex lens surface 8 a has a greater positive refractive power than the second convex lens surface 8 b, i.e., the first convex lens surface 8 a has a greater curvature than the second convex lens surface 8 b and is curved outwardly convexly.

[0035] As a result, in the vertical cross section of the second lens body 4 shown in Figure 1, the second incident portion 8 refracts the first and second light L1, L2 (light L) emitted from the first and second exit surfaces 7a, 7b (first exit portion 7) toward the optical axis AX, and the light enters the interior of the second lens body 4 from the first and second convex lens surfaces 8a, 8b.

[0036] On the other hand, the second entrance portion 8 is formed by a convex lens surface that is curved outward in a convex shape in the horizontal cross section of the second lens body 4 shown in FIG.

[0037] As a result, in the horizontal cross section of the second lens body 4 shown in Figure 2, the second incident portion 8 refracts the light L (first and second lights L1, L2) in a direction parallel to the optical axis AX, and the light enters the interior of the second lens body 4.

[0038] The second emission section 9 is formed by a cylindrical lens surface that is curved outwardly convexly in the vertical cross section of the second lens body 4 shown in Figure 1 and extends horizontally in the horizontal cross section of the second lens body 4 shown in Figure 2.

[0039] As a result, in the vertical cross section of the second lens body 4 shown in Figure 1, the second exit portion 9 refracts the first and second light L1, L2 (light L) incident from the first and second convex lens surfaces 8a, 8b (second entrance portion 8) in a direction parallel to the optical axis AX, and emits the light to the outside of the second lens body 4.

[0040] On the other hand, in the horizontal cross section of the second lens body 4 shown in Figure 2, the second exit portion 9 emits the first and second light beams L1 and L2 (light L) incident from the first and second convex lens surfaces 8a and 8b (second entrance portion 8) to the outside of the second lens body 4 while maintaining the direction parallel to the optical axis AX.

[0041] As a result, the light L emitted from the second lens body 4 is projected toward the front of the vehicle while being collimated with respect to the optical axis AX.

[0042] In the lamp unit 20 of this embodiment having the above-described configuration, the light L emitted from the light source 2 is projected while being expanded toward the front of the vehicle via the first lens body 3 and the second lens body 4. This makes it possible to project a light distribution pattern for ADB toward the front of the vehicle.

[0043] Here, in the vertical cross section of the lamp unit 20 shown in Figure 1, the total length of the lamp unit 20 is T (= D1 + D2 + D3), the distance from the rear end of the lamp unit 20 to the focal point S1 is D1, the distance from the front end of the lamp unit 20 to the focal point S2 on the rear side of the second lens body 4 is D2, the distance between the focal point S1 and the focal point S2 is D3, and the distance from the front end of the lamp unit 20 to the focal point S1 is D4 (= D2 + D3).

[0044] In the lamp unit 20, the longer the distance D3 between the focal point S1 and the focal point S2, the smaller the vertical spread of the light distribution pattern of the light L projected forward from the second lens body 4 can be.

[0045] On the other hand, the longer the distance D3 between the light condensing point S1 and the focal point S2 is relative to the overall length T of the lamp unit 20, the longer the overall length T of the lamp unit 20 becomes.

[0046] In contrast to this, in the lamp unit 20 of this embodiment, the distance D2 to the rear focal point S2 of the second lens body 4 is shortened, thereby making the overall length T of the lamp unit 20 shorter than in the conventional configuration.

[0047] On the other hand, in order to shorten the distance D2 (total length T) while lengthening the distance D3 between the condensing point S1 and the focal point S2, it is necessary to increase the refractive power of the second lens body 4. However, in this case, it becomes difficult to align the composite focal point on the rear side of the second lens body 4 and the first exit portion 7 with the condensing point S1.

[0048] 1, lamp unit 20 is configured to have a first exit surface 7a that refracts first light L1 in a diffusing direction, the first exit surface 7a corresponding to a central region E1 of first lens body 3 into which first light L1 of light L emitted from light source 2 is mainly incident. This causes the composite focal point on the rear side of second lens body 4 and first exit portion 7 to substantially coincide with light collection point S1.

[0049] Note that the phrase "approximately coincident" between the composite focus and the focal point S1 does not necessarily mean that the composite focus is located at the focal point S1 on the optical axis, but rather means that the composite focus is located at a position within ±5 mm in front of or behind the focal point S1 on the optical axis.

[0050] This makes it possible to obtain a good light distribution pattern while preventing the light distribution pattern formed by the light L projected ahead of the vehicle from becoming blurred and spreading in the vertical direction.

[0051] On the other hand, the lamp unit 20 of this embodiment is configured to have a first exit surface 7b that refracts the second light L2 in the converging direction, corresponding to the peripheral region E2 of the first lens body 3 onto which the second light L2 is mainly incident. This allows the second light L2 to be incident on the second lens body 4, making it possible to maintain the utilization efficiency of the light L emitted from the first exit portion 7.

[0052] As a result, in the lamp unit 20 of this embodiment, it is possible to reduce the overall length T while preventing the light distribution pattern from spreading in the vertical direction.

[0053] Therefore, by providing the vehicle lamp 1 of this embodiment with such a lamp unit 20, it is possible to further reduce the size and obtain a good light distribution pattern.

[0054] The present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the lamp unit 20, the first lens body 3 and the second lens body 4 are arranged separately, but the first lens body 3 and the second lens body 4 may be connected via a connecting portion.

[0055] Furthermore, when the lamp units 20 are arranged in a line in the vehicle width direction, the second lens bodies 4 arranged in the vehicle width direction can be integrated into one body.

[0056] The effects of the present invention will be made clearer by the following examples. Note that the present invention is not limited to the following examples and can be practiced with appropriate modifications within the scope of the present invention.

[0057] Example 1 In Example 1, the lamp unit 20 shown in FIG. 3 has a total length T of 61 mm, a distance D1 of 24 mm, a distance D2 of 30 mm, a distance D3 of 7 mm, and a distance D4 of 37 mm.

[0058] FIG. 4 shows a light distribution pattern obtained by simulating the lamp unit 20 of Example 1 when light L emitted in front of the lamp unit 20 is projected onto a virtual vertical screen facing the lamp unit 20.

[0059] Comparative Example 1 In Comparative Example 1, the configuration of the lamp unit 20A shown in FIG. 5 is such that the total length T=65 mm, the distance D1=24 mm, the distance D2=35 mm, the distance D3=6 mm, and the distance D4=41 mm.

[0060] The lamp unit 20A of Comparative Example 1 has a conventional configuration, in which the first light exit portion 7 is formed with one convex lens surface 7c in accordance with the distance D4. This allows the rear composite focal point of the second lens body 4 and the first light exit portion 7 to coincide with the light condensing point S1 without shortening the overall length T.

[0061] FIG. 6 shows the light distribution pattern obtained by simulating the lamp unit 20A of Comparative Example 1 when light L emitted in front of the lamp unit 20A is projected onto a virtual vertical screen facing the lamp unit 20A.

[0062] Comparative Example 2 In Comparative Example 2, the configuration of lamp unit 20B shown in Figure 7 is as follows: total length T = 61 mm, distance D1 = 24 mm, distance D2 = 35 mm, distance D3 = 2 mm, and distance D4 = 37 mm. Also, first light exit portion 7 is formed by one convex lens surface 7c.

[0063] Lamp unit 20B of Comparative Example 2 has a shorter overall length T than lamp unit 20A of Comparative Example 1, and so distance D4 is shortened to keep distance D1 unchanged. That is, distance D4 is the distance to the combined focal point (convergence point S1) on the rear side of second lens body 4 and first emission portion 7, and so the curvature of convex lens surface 7c is greater than that of Comparative Example 1 to shorten this combined focal point. On the other hand, because the curvatures of first entrance portion 6 and first emission portion 7 of second lens body 4 remain unchanged, distance D2 to focal point S2 on the rear side of second lens body 4 is the same as in Comparative Example 1.

[0064] FIG. 8 shows the light distribution pattern of the lamp unit 20B of Comparative Example 2 when light L emitted in front of the lamp unit 20B is projected onto a virtual vertical screen facing the lamp unit 20B in a simulation.

[0065] As shown in Figures 4 and 6, in the lamp unit 20 of Example 1, even if the overall length T is made shorter than that of the lamp unit 20 of Comparative Example 1, it is possible to obtain a good light distribution pattern with high luminous intensity near the center while suppressing the light distribution pattern from spreading in the vertical direction.

[0066] On the other hand, as shown in Figures 6 and 8, in lamp unit 20B of Comparative Example 2, only the distance D2 (total length T) is shortened from the configuration of lamp unit 20 of Comparative Example 1, so that the light distribution pattern is wider in the vertical direction compared to the light distribution pattern of lamp unit 20 of Comparative Example 1, and the luminous intensity near the center is reduced, making it difficult to meet the luminous intensity required by law.

[0067] DESCRIPTION OF SYMBOLS 1...vehicle lamp 2...light source 3...first lens body 4...second lens body 5...light guide section 5a...protrusion 6...first incident section 6a...first incident surface 6b...second incident surface 6c...reflecting surface 7...first exit section 7a...first exit surface (concave lens surface) 7b...second exit surface (convex lens surface) 8...second incident section 8a...first convex lens surface 8b...second convex lens surface 9...second exit section (convex lens surface) 20...lamp unit L...light L1...first light L2...second light E1...central region E2...peripheral region

Claims

1. A vehicle lamp comprising: a light source that emits light radially forward; a first lens body disposed in front of the light source; and a second lens body disposed in front of the first lens body, the lamp projecting the light emitted from the light source toward the front of the vehicle via the first lens body and the second lens body, wherein the first lens body includes a first incident portion located on the side facing the light source and a first exit portion located on the opposite side to the first incident portion, and the first incident portion has a lens shape that causes the light emitted from the light source to enter the inside of the first lens body so that the light emitted from the light source is focused at a focusing point located inside the first lens body and then diffuses from the focusing point toward the first exit portion, a first exit surface that refracts light from a central region including the optical axis of the light emitted from the light source in a diffusing direction toward the second lens body and emits the light to the outside of the first lens body, in a vertical cross section including the optical axis of the light emitted from the light source; and a second exit surface that refracts light from a peripheral region surrounding the central region in a converging direction toward the second lens body and emits the light to the outside of the first lens body.

2. A vehicle lamp according to claim 1, characterized in that the first light exit surface is formed by a concave lens surface, and the second light exit surface is formed by a ring-shaped convex lens surface that surrounds the periphery of the concave lens surface.

3. The vehicle lamp according to claim 1, wherein a composite focal point of the second lens body and the first light exit portion substantially coincides with the light-converging point.

4. The vehicle lamp according to claim 1, characterized in that the second lens body includes a second incident portion located on the side opposite the first exit portion in the vertical cross section, and a second exit portion located on the opposite side to the second incident portion, the second incident portion refracting the light emitted from the first exit portion toward the optical axis as it enters the interior of the second lens body, and the second exit portion refracting the light incident from the second incident portion in a direction parallel to the optical axis as it exits the exterior of the second lens body.

5. A vehicle lamp as described in claim 4, characterized in that the second incident portion has a first convex lens surface provided corresponding to the area into which light emitted from the first exit surface is incident, and a second convex lens surface provided corresponding to the area into which light emitted from the second exit surface is incident, and the first convex lens surface has a greater positive refractive power than the second convex lens surface.

6. The vehicle lamp according to claim 1, characterized in that the first incident portion has a first incident surface located at the center of the portion facing the light source, on which light from the central region is incident while being focused toward the focusing point, a second incident surface located on the inner periphery of a protrusion that protrudes toward the light source from a position surrounding the periphery of the first incident surface, on which light from the peripheral region is incident, and a reflective surface located on the outer periphery of the protrusion, which reflects the light incident from the second incident surface while being focused toward the focusing point.

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