JP2022103219A - Vehicle lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle lamp with improved temperature dependence of the aberration of a projection lens while reducing its weight.

SOLUTION: A vehicle lamp comprises a projection lens 4 that projects light emitted from a light source. The projection lens comprises a plurality of lenses (first lens 41 to third lens 43), where at least two lenses (first lens 41 and second lens 42) are made of resin. A refractive power ratio R (=Pr/Pt) of a total refractive power Pr of the resin lens and a refractive power Pt of the entire projection lens 4 satisfies either the relation of R=-0.182, the relation of -0.182≤R≤0, or the relation of -1/6<R≤0.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a lamp used for a vehicle such as an automobile, and particularly to a vehicle lamp suitable for being applied to a headlamp capable of ADB (Adaptive Driving Beam) light distribution control.

As a headlamp of an automobile, while enhancing the lighting effect in the front area of the own vehicle, the vehicle (hereinafter referred to as a front vehicle) existing in the front area of the own vehicle such as a preceding vehicle or an oncoming vehicle existing in the front area is referred to. ADB light distribution control has been proposed as one of the methods for obtaining light distribution to prevent dazzling. In this ADB light distribution control, the vehicle position detecting device detects the vehicle in front, the amount of light in the area where the detected vehicle in front exists is reduced or turned off, and the other wide area is brightly illuminated.

In recent years, this ADB light distribution control has also been applied to head lamps that use a light emitting element such as an LED as a light source, and the light from a plurality of LEDs as a light source, that is, the lighting area of each LED is synthesized and self-generated. It forms a light distribution to illuminate the area in front of the vehicle. When the vehicle in front is detected, the LED in the lighting area corresponding to the detected vehicle in front is dimmed or turned off.

In such ADB light distribution control, white light emitted from a plurality of LEDs is projected onto the front region of the own vehicle by a projection lens to form a plurality of illumination regions, and these illumination regions are appropriately combined and combined. By doing so, the required illumination area is formed. However, due to the aberration caused by the projection lens, the pattern shape of the projected LED light is changed, which makes it difficult to control the ADB light distribution with high accuracy.

In Patent Document 1, the direction of coma is specified by designing the rear main surface of the projection lens so as to have a predetermined curvature, and the uniformity of the projected light pattern is enhanced. However, since the technique of Patent Document 1 does not improve the aberration, it is difficult to deal with the change in the pattern shape of light caused by the aberration.

In order to improve the aberration, it is conceivable to configure the projection lens as a plurality of lenses, for example, a triplet lens. In this case, in order to reduce the weight and price of the projection lens, it is conceivable that a part of the plurality of lenses is made of a resin lens. For example, Patent Document 2 proposes a technique in which a first lens and a second lens are made of resin and a third lens is made of glass in a camera provided with a triplet lens.

Japanese Unexamined Patent Publication No. 2017-16928 Japanese Unexamined Patent Publication No. 8-68935

Since the lens of Patent Document 2 is applied to a camera that is often used at room temperature, it is unlikely that a problem caused by a change in environmental temperature will occur, but this type of lens can be used as a projection lens for an automobile lamp. Problems can occur when applied. That is, when applied to such a projection lens, the environmental temperature changes in the range of about 0 ° C. to 80 ° C. when the lamp is not lit and when the lamp is lit, so that the lens made of resin is used. Due to the change in thermal expansion, the optical characteristics of the triplet lens, especially the change in spot shape due to spherical aberration, becomes remarkable. When the spot shape formed by the projection lens is changed with the temperature change, the pattern shape of the projected illumination area is also changed, and therefore the reliability of the ADB light distribution control is changed with the temperature change. The problem arises that is reduced.

An object of the present invention is to provide a lighting fixture for a vehicle provided with a projection lens having an improved temperature dependence of a spot shape indicating a shape change of a light distribution pattern with respect to a temperature change, that is, an imaging performance of the projection lens.

The vehicle lighting equipment of the present invention is a vehicle lighting equipment including a light source and a projection lens that projects light emitted from the light source, and the projection lens includes two or more resin lenses and one or more glass lenses. The relationship between the total refractive power Pr of the resin lens and the refractive power ratio R (= Pr / Pt) of the refractive power Pt of the entire projection lens is R = -0.182, the relationship of -0.182≤R≤0, or- It has one of the relationships of 1/6 <R ≦ 0.

The projection lens in the present invention preferably includes a first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens having a positive refractive power in order from the side opposite to the light source. It is configured to include a fourth lens having a positive refractive power, the first lens and the second lens are made of resin, and the third lens and the fourth lens are made of glass.

According to the present invention, the projection lens can be made lighter by forming two or more lenses out of a plurality of lenses constituting the projection lens with a resin, and the ratio of the refractive powers of the resin lens and the entire projection lens to each other can be reduced. The spot shape showing the imaging performance of the projection lens by setting the value of R = -0.182, -0.182≤R≤0, or -1/6 <R≤0. It is possible to improve the temperature dependence of the lens and realize suitable ADB light distribution control.

Schematic vertical cross-sectional view of a headlamp provided with the light distribution control device of the present invention. A perspective schematic view of the lamp unit from the front. The figure which shows the surface structure of the 1st to 3rd lenses constituting the projection lens of Embodiment 1, and the design formula and the design value thereof. The light distribution pattern figure which combined the light emitted from the LED chip. The figure which shows the temperature dependence of the refractive power ratio and the focal length change rate. The simulation figure which shows the change of the spot shape by the temperature change of the projection lens of Embodiment 1. FIG. The simulation figure which shows the change of the spot shape by the temperature change of the projection lens of the comparative example. The block diagram of the projection lens of Embodiment 2. The figure which shows the surface structure of the 1st to 4th lenses constituting the projection lens of Embodiment 2, and the design formula and the design value thereof. The simulation figure which shows the change of the spot shape by the temperature change of the projection lens of Embodiment 2.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a conceptual configuration in which the present invention is applied to a headlamp HL of an automobile to which ADB light distribution control is applied. In the following description, the light source side of the headlamp HL is referred to as the rear, and the front side of the headlamp HL is referred to as the front.

In the headlamp HL, the lamp unit 2 is housed in a lamp housing 1 formed of a lamp body 11 and a front cover 12 made of a translucent material. The lamp unit 2 has a light source 3 and a projection lens 4 which are internally and supported by a unit casing 21 whose inner surface is formed as a light reflection surface, and the light emitted from the light source 3 is emitted from the light source 3 to the front of the automobile by the projection lens 4. It is configured to irradiate the area to obtain the desired light distribution.

FIG. 2 is a perspective schematic view of the projection lens 4 when viewed from the front. As shown in FIG. 1, the light source 3 has a plurality of light emitting elements on a substrate 31 supported by a heat sink 32. 30, here, nine LED (light emitting diode) chips 301 to 309 that emit white light are mounted. These LED chips 301 to 309 are mounted in two upper and lower stages, that is, four LED chips 301 to 304 are arranged in the upper stage and five LED chips 305 to 309 are arranged in the lower stage in the horizontal direction. Has been done. When these LED chips 301 to 309 emit light, the light emitted from each of them is directly reflected or reflected on the inner surface of the unit casing 21 and directed to the projection lens 4.

As shown in FIG. 1, the LED chips 301 to 309 are connected to a light emitting circuit 5 through a substrate 31, and are individually controlled by the light emitting circuit 5 so that light emission, quenching, and further emission luminous intensity can be changed. .. A lighting switch 51 operated by the driver is connected to the light emitting circuit 5, and the lighting switch 51 is configured to switch between low beam light distribution, high beam light distribution, and ADB light distribution. Further, the light emitting circuit 5 is connected to an in-vehicle camera 52 for executing ADB control, detects a vehicle in front from the front image of the vehicle captured by the in-vehicle camera 52, and controls light distribution so as not to dazzle the vehicle in front. Is configured to run.

As shown in FIG. 3, in the first embodiment, the projection lens 4 is composed of a triplet lens, and in order from the front side of the lamp, a first lens 41 made of a convex lens having a positive refractive power and a negative refractive power are applied. It is composed of a second lens 42 made of a concave lens and a third lens 43 made of a convex lens having a positive refractive power. The first lens 41 to the third lens 43 are coaxially arranged so that their optical axes are aligned with each other, and the light source 3, that is, each of the LED chips 301 to the vicinity of the focal point Fo on the rear side of the lamp of the projection lens 4. 309 is arranged.

Of the three lenses constituting the projection lens 4, the first lens 41 and the second lens 42 are made of a translucent resin, for example, the first lens is made of PMMA (acrylic resin). The second lens 42 is made of PC (polycarbonate resin). The third lens 43 is made of translucent glass having a lower refractive index and lower dispersion (high Abbe number) than the second lens 42, and is made of, for example, N-BK7 (crown glass borosilicate). There is.

Further, in order to reduce aberrations in the projection lens 4, that is, chromatic aberration, spherical aberration, astigmatism, and coma, the front surface (first surface) S1 and the rear surface (second surface) S2 of the first lens 41, the second lens Of the front surface (third surface) S3 and the rear surface (fourth surface) S4 of the 42, and the front surface (fifth surface) S5 and the rear surface (sixth surface) S6 of the third lens 43, at least the first surface S1 to the fifth surface. S5 is designed to be aspherical. In this embodiment, all of the first surface S1 to the sixth surface S6 are designed to be an aspherical surface based on the aspherical surface definition formula (1) shown in FIG. Here, z is the sag amount, r is the radial dimension from the optical axis, c is the radius of curvature, k is the cornic constant, and α ₁ and α ₂ are aspherical coefficients.

The headlamp HL of the first embodiment including the projection lens 4 having the above configuration is set to low beam light distribution control or high beam light distribution control by switching the lamp switch 51 by the driver or the like. At the time of low beam light distribution control, the four LED chips 301 to 304 in the upper stage are emitted by the control by the light emitting circuit 5. The white light emitted from these LED chips 301 to 304 is irradiated to the front region of the automobile by the projection lens 4, and in FIG. 4, the light distribution in which the illumination regions P1 to P4 are combined, that is, the horizontal line passing through the lens optical axis Lx. A low beam light distribution is formed that illuminates the area below the cutoff line approximately along H.

At the time of high beam light distribution control, the five LED chips 305 to 309 in the lower stage are further emitted by the control by the light emitting circuit 5. The white light of these LED chips 305 to 309 is irradiated to the front region of the automobile by the projection lens 4, and the illumination regions P5 to P9 are combined to form a combined light distribution. This light distribution is combined with the low beam light distributions P1 to P4 described above to form a high beam light distribution that illuminates a wide area.

On the other hand, when the ADB light distribution control is set by the driver, the light emitting circuit 5 controls the high beam light distribution in principle, and at the same time, the front vehicle existing in the front region of the vehicle is controlled based on the image captured by the vehicle-mounted camera 52. To detect. Then, the LED chip corresponding to the illuminated area overlapping the detected front vehicle, particularly the area overlapping the illuminated areas P5 to P9, is controlled to be dimmed or extinguished. As a result, the lighting area to which the vehicle in front belongs is selectively shielded from light to prevent dazzling to the vehicle in front, while ADB light distribution with enhanced visibility in other lighting areas is executed.

Further, in the projection lens 4 of the first embodiment, the specific gravity of the resin constituting the first lens 41 and the second lens 42, in which the specific gravity of PMMA and PC is about 1.2 (g / cm ^-3 ), respectively. Yes, it is almost 1/2 of the specific gravity 2.0 (g / cm ^-3 ) of the glass of the third lens, so it is a projection lens rather than a projection lens in which the first lens 41 and the second lens 42 are made of glass. The weight reduction of 4 can be realized. In addition, it is possible to reduce the price. The reason why the third lens 43 is made of glass is to improve the imaging performance of the projection lens 4 as described later.

Here, considering the environmental temperature of the projection lens 4, when the headlamp HL is turned off, the temperature of the projection lens 4 is substantially equal to the outside air temperature, and is approximately 0 ° C to 40 ° C. On the other hand, when the headlamp HL is lit, the temperature is raised to about 80 ° C. by the heat generated by the LED chips 301 to 309.

In the projection lens 4 of the embodiment, the coefficient of thermal expansion of PMMA of the first lens 41 is about 4.7 to 7 (× 10 ^-5 / ° C), and the coefficient of thermal expansion of the PC of the second lens 42 is 5.6 (×). It is about 10 ^-5 / ° C). The coefficient of thermal expansion of N-BK7 of the third lens 43 is about 30 (× 10 ^-7 / ° C.). Therefore, when the first lens 41 and the second lens 42 are deformed by thermal expansion, the lens refractive powers of the first lens 41 and the second lens 42 change, and the aberration in the projection lens 4 becomes a problem. On the other hand, since the third lens 43 is made of glass and has a coefficient of thermal expansion of about two orders of magnitude smaller than that of resin, the influence on the refractive power by the temperature change of the projection lens 4 can be ignored.

Therefore, the present inventor has considered the influence of changes in the refractive powers of the first lens 41 and the second lens 42 made of resin on the imaging performance of the projection lens 4. In particular, paying attention to the total refractive power of the first lens 41 and the second lens 42, the correlation between the ratio of this total refractive power to the total refractive power of the projection lens 4 and the imaging performance of the projection lens 4 is determined. I considered it. That is, the refractive power ratio R of the total refractive powers P1 and _{2 of the first lens 41 and the second lens 42 and the total refractive power Pt of the projection lens 4 is obtained, and the refractive power ratio R (= P 1,2 )} is obtained. / Pt) and the temperature dependence of the imaging performance of the projection lens 4 were investigated.

When the positive refractive power of the first lens 41 is (+ P1) and the negative refractive power of the second lens 42 is (-P2), the total refractive power of the first lens 41 and the second lens 42 is _P1,2 . teeth,
P _1,2 = P1-P2
Is. When the focal length of the first lens 41 is (+ f1) and the focal length of the second lens 42 is (−f2), the refractive power P1 of the first lens 41 is (+ 1 / f1) and the second lens is the second lens. Since the refractive power P2 of 42 is (-1 / f2), the total refractive power P _1,2 is P _1,2 = (1 / f1)-(1 / f2).
Is required as.

Further, assuming that the positive refractive power of the third lens 43 is (+ P3), the total refractive power Pt of the projection lens 4 is
Pt = P1-P2 + P3
Is. That is, assuming that the focal length of the third lens 43 is (+ f3),
Pt = (1 / f1)-(1 / f2) + (1 / f3)
Is required as.

Then, in order to evaluate the temperature dependence of the imaging performance of the projection lens 4 when the refractive power ratio R is changed, the rate of change of the focal length, which is closely related to the aberration, was measured. The results shown in The horizontal axis is the refractive power ratio R, and the vertical axis is the rate of change (%) of the focal length. For a projection lens designed so that the refractive power ratio R was 1/6, 1/3, 1/2, the rate of change in the focal length when the temperature was changed by 40 ° C. was measured. As a result, the rate of change increases as the refractive power ratio R increases, but in order to reduce the rate of change in focal length, which is significantly affected by the spot shape as imaging performance, to 0.1 (%) or less, the refractive power ratio R It was found that it is preferable to set R <1/3.

Therefore, in the first embodiment, the refractive power ratio R of the total refractive powers P1 and ₂ of the first lens 41 and the second lens 42 and the total refractive power Pt of the projection lens 4 is R <1/3. It is designed to be. That is,
R = (P _1,2 / Pt) <1/3
Is.

In order to realize this, in the projection lens 4 of the first embodiment, the shapes of the first lens 41 and the second lens 42 made of resin, that is, the first surface S1 to the fourth surface S4 are shown in FIG. As shown, it is designed to be aspherical, and the focal length of the first lens 41 and the focal length of the second lens 42 are configured to be substantially equal. By making the focal length f1 of the first lens 41 and the focal length f2 of the second lens 42 substantially equal in this way, the total refractive powers P1 and ₂ become small values close to "0". Therefore, the total refractive powers P1 and ₂ of the first lens 41 and the second lens 42 can be made relatively extremely small with respect to the total refractive power Pt of the projection lens 4, and the refractive power ratio R can be made smaller than 1/3. It will be easier to design it to be much smaller.

Further, in the projection lens 4 of the first embodiment, the coefficients of thermal expansion of the resins constituting the first lens 41 and the second lens 42 are substantially equal to each other. Therefore, the refractive powers of the first lens and the second lens with respect to the temperature change change in directions opposite to each other, and the total refractive powers P1 and ₂ do not change so much with the temperature change. This makes it easy to keep the refractive power ratio R at a value smaller than 1/3.

Even if the types of resins constituting the first lens 41 and the second lens 42 are different and the coefficients of thermal expansion of each are different to some extent, the coefficient of thermal expansion of the resin is compared with the coefficient of thermal expansion of glass. If so, the difference in the coefficient of thermal expansion can be ignored because it is originally extremely large. Therefore, even in this case, the effect of improving the temperature dependence as described above can be obtained. Further, if the first lens 41 and the second lens 42 are made of a resin having the same coefficient of thermal expansion, the temperature dependence can be further improved.

FIG. 6A shows the spot shape as the imaging performance of the projection lens 4 of the first embodiment simulated by the present inventor. In the projection lens 4 of the first embodiment shown in FIG. 3, the first lens 41 and the second lens 42 are made of resin, and the third lens 43 is made of glass. Further, the total refractive power of the first lens 41 and the second lens 42 is set to a small value close to "0", and the refractive power ratio R is designed to be R <1/3.

FIG. 6B has a lens configuration similar to that of the projection lens 4 of the first embodiment, but is a simulation of a projection lens as a comparative example in which the first lens 41 to the third lens 43 are all made of resin. Therefore, all the first to third lenses are significantly deformed due to thermal expansion, and the refractive power ratio R does not satisfy the condition of R <1/3.

A light beam having a required diameter is incident on the projection lens 4 of these embodiments and the projection lens of the comparative example from the first lens 41 side to form a spot. Then, in each case, changes in the focal length, RMS (root mean square) radius, and spot shape when the temperature of the projection lens changes to 0 ° C., 20 ° C., 40 ° C., and 80 ° C. are obtained. For RMS, the angles with respect to the optical axis are obtained at 0 ° and 10 °. From this, when the focal length change, the spot shape change, and the RMS radius value at each temperature are compared, the projection lens of the embodiment of FIG. 6A is temperature-dependent of the spot shape as compared with the projection lens of the comparative example of FIG. 6B. It turns out that there is little sex.

Incidentally, in the projection lens 4 of the first embodiment shown in FIG. 6A, the total refractive power Pt is 0.175, and the total refractive powers P1 and ₂ of the first lens 41 and the second lens 42 are 0.002. Therefore, the refractive power ratio R is approximately 1/80, which satisfies the above-mentioned condition of R <1/3. When the refractive power ratio R is 1/80, as can be seen from FIG. 5, the rate of change in the focal length can be improved to 0.08 (%) or less.

The range of the value of the refractive power ratio R is the case where the focal length change rate is 0.1 (%) or less as described above, and the value of the refractive power ratio R is when the focal length change rate is made stricter. Needless to say, may be set in a smaller range, and conversely, the value of the refractive power ratio R may be set in a larger range when the focal length change rate may be relaxed. For example, in the case of making it more severe, as can be seen from FIG. 5, if the refractive power ratio R is set to R <1/6, the rate of change in the focal length can be improved to nearly 0.08 (%).

In the first embodiment, an example in which all the first to sixth surfaces are designed to be aspherical has been described, but in the present invention, at least the first to fifth surfaces may be aspherical, and therefore the sixth surface is sufficient. The surface may be spherical. Further, the present invention can be applied even when the convex lens of the first lens and the third lens and the concave lens of the second lens are meniscus lenses whose both sides are curved in the same direction.

FIG. 7 is a lens configuration diagram of the projection lens 4A of the second embodiment. In the second embodiment, the projection lens is composed of four lenses. That is, in order from the front side of the lamp, a first lens 41 made of a convex lens having a positive refractive power, a second lens 42 made of a concave lens having a negative refractive power, and a third lens made of a convex lens having a positive refractive power, respectively. It is composed of 43 and a fourth lens 44. The surfaces S1 to S6 are the same as those in the first embodiment, and the surfaces S7 and S8 represent the front surface and the rear surface of the fourth lens 44.

FIG. 8 is a diagram showing a surface configuration diagram, a design formula, and design values of the projection lens 4A of the second embodiment. In the projection lens 4A, the first and second lenses 41 and 42 are made of resin, and the third and fourth lenses 43 and 44 are made of glass. Then, in the second embodiment, the total refractive powers P1 and ₂ of the first lens 41 and the second lens 42 and the total refractive power Pt of the projection lens 4 including the first lens 41 to the fourth lens 44 are refracted. It is designed so that the force ratio R is R = 1/6. That is, R (= 1/6) <1/3, and the conditions described in the first embodiment,
R = (P _1,2 / Pt) <1/3
Meet.

When the temperature dependence of the imaging performance when the refractive power ratio R was changed in the projection lens 4A of the second embodiment was evaluated, the same result as that of the first embodiment shown in FIG. 5 was obtained. From this, it was found that it is preferable to set the refractive power ratio R to R <1/3 in order to reduce the focal length change rate to 0.1 (%) or less even in the projection lens 4A of the second embodiment.

FIG. 9 is a simulation diagram showing a change in the spot shape due to a temperature change of the projection lens 4A of the second embodiment. It can be seen that even in this projection lens, the temperature dependence of the spot shape is small as in the projection lens of the first embodiment shown in FIG. 6A.

According to the study of the present inventor, the projection lens according to the present invention includes the total refractive power Pr of the resin lens and the resin lens if the configuration includes two or more resin lenses and one or more glass lenses. If the refractive power ratio R (= Pr / Pt) of the projection lens 4 including the glass lens to the entire refractive power Pt satisfies the condition of R <1/3, the same effects as those of the first and second embodiments are obtained. be able to.

Further, when R was calculated based on the data shown in FIG. 8, a value of R = −0.182 was obtained. That is, since the present invention includes the relationship of R = −0.182, it can be seen that if the condition of R <1/3 is satisfied, R holds even if the value is negative. Therefore, in the present invention, it was confirmed that the present invention is established even in the range of −0.182 ≦ R ≦ 0, even if some margin is taken, and in the range of -1/6 <R ≦ 0.

Here, in the headlamp of the embodiment, an example in which the light source is composed of nine LED chips to form the ADB light distribution is shown, but the light source is not limited to the ADB light distribution, and the number of LED chips and the illumination area are not limited. The number of LEDs and the pattern shape of each lighting area can be set arbitrarily. It can also be applied to a lamp using a MEMS (micro electro mechanical systems) mirror array as a light source. Alternatively, the present invention is not limited to an optical system that directly projects light from a light source, and can be applied to a lamp that uses an optical scanning optical system that uses reflected light from a rotating mirror and a swing mirror.

HL headlamp 1 lamp housing 2 lamp unit 3 light source 4, 4A projection lens 5 light emitting circuit 41 convex lens (first lens: resin lens)
42 Concave lens (second lens: resin lens)
43 Convex lens (3rd lens: glass lens)
44 Convex lens (4th lens: glass lens)
301-309 LED chip (light emitting element)
S1 to S8 1st to 8th planes R Refractive power ratio Pr Total refractive power of resin lens Pt Refractive power of the entire projection lens

Claims (5)

A vehicle lighting tool including a light source and a projection lens that projects light emitted from the light source, wherein the projection lens includes two or more resin lenses and one or more glass lenses, and the resin lens of the resin lens. A vehicle lighting tool characterized in that the total refractive power Pr and the refractive power ratio R (= Pr / Pt) of the refractive power Pt of the entire projection lens are in a relationship of R = −0.182. A vehicle lighting tool including a light source and a projection lens that projects light emitted from the light source, wherein the projection lens includes two or more resin lenses and one or more glass lenses, and the resin lens of the resin lens. A vehicle lighting tool characterized in that the total refractive power Pr and the refractive power ratio R (= Pr / Pt) of the refractive power Pt of the entire projection lens have a relationship of −0.182 ≦ R ≦ 0. A vehicle lighting tool including a light source and a projection lens that projects light emitted from the light source, wherein the projection lens includes two or more resin lenses and one or more glass lenses, and the resin lens of the resin lens. A vehicle lamp having a relationship of -1/6 <R ≦ 0 between the total refractive power Pr and the refractive power ratio R (= Pr / Pt) of the refractive power Pt of the entire projection lens. The projection lens has a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a positive refractive power in order from the side opposite to the light source. 1 to 3, wherein the first lens and the second lens are made of resin, and the third lens and the fourth lens are made of glass. The vehicle lighting equipment described in either. The vehicle lamp according to any one of claims 1 to 4, wherein the light from the light source is projected to control the ADB light distribution.

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