Patent Description:
In recent years, the application of pixelated lighting devices in the field of vehicle lighting technology has become more and more common. In actual use, pixelated lighting devices used to form pixelated light shapes and lighting devices used to form non-pixelated light shapes (such as matrix lighting devices) are superimposed and used together, that is, pixelated light shapes and non-pixelated light shapes are superimposed and used together, and the two have a certain superimposed area and superimposed boundary. For example, <CIT> discloses a motor vehicle headlamp with a semiconductor light source; <CIT> discloses an optical element for expansion of light distribution of a headlight of a motor car; <CIT> discloses a lighting device for vehicles; and <CIT> discloses an illumination device for vehicles.

Furthermore, a superimposed light shape of a pixelated light shape and a non-pixelated light shape of a vehicle lamp in a high beam illumination mode is shown in <FIG>, and a superimposed light shape of a pixelated light shape and a non-pixelated light shape of a vehicle lamp in a low beam illumination mode is shown in <FIG>. In <FIG>, region a is a pixelated light shape, region b is a non-pixelated light shape, and c is the superimposed boundary between the pixelated light shape and the non-pixelated light shape. In addition, d is a low beam cutoff line in <FIG>, and is formed by several bright and dark areas of the pixelated light shape area.

Furthermore, a pixelated light shape is shown in <FIG>. A road simulation light shape formed by superimposing a pixelated light shape and a non-pixelated light shape is shown in <FIG>. In <FIG> and <FIG>, region a1 is the pixelated light shape, and region c1 is the superimposed boundary between the pixelated light shape and the non-pixelated light shape, that is, region c1 is the lower boundary area of the pixelated light shape. From <FIG> and <FIG>, it can be seen that the boundary of the pixelated light shape formed by a conventional pixelated lighting device is too sharp, which makes the superimposed shape transitions uneven and has poor continuity at the superimposed boundary after superimposing the pixelated light shape and the non-pixelated light shape, causing visual fatigue for drivers and thus creating driving safety hazards.

Given the shortcomings of the prior art mentioned above, the present invention provides a vehicle pixelated lighting device that can blur the boundary of pixelated light shape, so that the superimposed shape transitions uniformly and has good continuity at the superimposed boundary after superimposing the pixelated light shape and the non-pixelated light shape.

Specifically, the present invention provides a vehicle pixelated lighting device according to claim <NUM>, including a pixel illumination light source and a lens group arranged along a light-emitting direction. The pixel illumination light source has an overall light-emitting surface facing the lens group. The device further includes a light-transmitting element fixedly arranged between the pixel illumination light source and the lens group. The light-transmitting element is arranged at a boundary of the pixel illumination light source and covers at least a part of a boundary of the overall light-emitting surface of the pixel illumination light source. The light-transmitting element includes a light incident surface facing the pixel illumination light source and a light-emitting surface facing the lens group. The light-transmitting element is used for changing a deflection angle of a light ray from the pixel illumination light source, and emitting a deflected light ray to the lens group. A reverse extension line of the deflected light ray intersects with a plane where the overall light-emitting surface is located at a position outside of a light-emitting point of the incident light ray corresponding to the deflected light ray.

Further, in an aspect that does not form part of the invention, the light-transmitting element covers only an upper boundary of the overall light-emitting surface of the pixel illumination light source.

Acording to the invention, the light-transmitting element covers all boundaries of the overall light-emitting surface of the pixel illumination light source.

Further, the light-transmitting element is a silicone component.

According to the invention, the light-emitting surface of the light-transmitting element includes at least one of an arc-shaped surface segment, a vertical plane segment, a horizontal plane segment, and an oblique plane segment, or the light incident surface of the light-transmitting element includes at least one of an arc-shaped surface segment, a vertical plane segment, a horizontal plane segment, and an oblique plane segment.

Further, a distance between the pixel illumination light source and the light-transmitting element is less than or equal to <NUM>.

Further, the lens group includes a first lens, a second lens, and a third lens sequentially arranged along the light-emitting direction. The first lens is a lens with positive optical power, the second lens is a lens with negative optical power, and the third lens is a lens with positive optical power.

Further, Abbe numbers of the first lens and the third lens are both greater than an Abbe number of the second lens.

Further, a material of the first lens is optical glass, a material of the second lens is PC, and a material of the third lens is PMMA.

Further, the vehicle pixelated lighting device further includes a lens holder, a circuit board, and a heat sink. The first lens, the second lens, and the third lens are all installed in the lens holder. The pixel illumination light source is installed on the circuit board. The heat sink, the circuit board, and the lens holder are fixedly connected in a sequence along the light-emitting direction. The light-transmitting element is fixed on the lens holder or the circuit board.

Further, the vehicle pixelated lighting device further includes a first limiting ring and a second limiting ring both arranged inside the lens holder, and a beam limiting element threadedly connected to one end of the lens holder. The other end of the lens holder includes a first limiting portion, and an inner wall of the lens holder includes a second limiting portion and a third limiting portion. Outer peripheral surfaces of the first lens, the second lens and the third lens are all abutted against the inner wall of the lens holder. The first lens is limited between the first limiting portion and the first limiting ring, the second lens is limited between the second limiting portion and the second limiting ring, and the third lens is limited between the third limiting portion and the beam limiting element.

Further, the beam limiting element is an aperture stop.

The present invention further provides a vehicle lamp. The vehicle lamp is equipped with the above vehicle pixelated lighting device.

The present invention further provides a vehicle. The vehicle is equipped with the above vehicle lamp.

As described above, the vehicle pixelated lighting device, the vehicle lamp and the vehicle involved in the present invention have the following beneficial effects:
A light-transmitting element that is a loop member and that covers all boundaries of the pixel illumination light source is set at the boundary of the pixel illumination light source to change the deflection angle of the light entering the light-transmitting element, so that the light is deflected relative to the original propagation direction and forms a deflected light entering the lens group. The intersection point of the reverse extension line of the deflected light and the plane where the overall light-emitting surface is located is located outside the light-emitting point of the incident light corresponding to the deflected light, so that the light-emitting angle of the light after passing through the lens group increases. In this way, the light-transmitting element makes the light entering the light-transmitting element be directed to extend towards the outside away from the center of the pixelated light shape, thus realizing blurring of the boundary of the pixelated light shape, so that the pixelated light shape transitions softly and smoothly at its blurred boundary, and the superimposed shape transitions uniformly and has good continuity at the superimposed boundary after superimposing the pixelated light shape and the non-pixelated light shape. In addition, the boundary of the pixelated light shape is blurred through the light-transmitting element in the present application, and since the light-transmitting element does not block light, light energy will not be lost, and energy utilization is improved.

The embodiments of the present invention will be described below. Those skilled may easily understand other advantages and effects of the present invention according to contents disclosed by the specification.

It should be understood that the structures, proportions, sizes, and the like, which are illustrated in the drawings of the present specification, are only used to clarify the contents disclosed in the specification for understanding and reading by those skilled, and are not intended to limit the implementation of the present invention.

In addition, the terms "first," "second," and "third" are used for descriptive purposes and should not be construed as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features described with "first," "second," and "third" may include one or more of the features described either explicitly or implicitly.

The present invention provides a vehicle. The vehicle includes a vehicle lamp that may be a front or rear lamp. Further, the vehicle lamp includes a vehicle pixelated lighting device for forming a pixelated light shape. For ease of description, in the following embodiments, the light-emitting direction of the vehicle pixelated lighting device is defined as a forward direction, that is, the light source in the vehicle pixelated lighting device emits light forward, and the vehicle pixelated lighting device forms a pixelated light shape on its front side.

In addition, in the following embodiments, "dispersion" refers to the property that the refractive index of a material changes with the frequency of incident light. For example, white light includes seven monochromatic lights: red, orange, yellow, green, blue, indigo and violet, and because the refractive indices of these seven monochromatic lights are different, incident white light will be dispersed into these seven colors after refraction. The degree of dispersion is generally related to the structure and material of the lens. Generally speaking, short-wave inward dispersion and long-wave outward dispersion occur in lenses with positive optical power, while short-wave outward dispersion and long-wave inward dispersion occur in negative optical power lenses. Therefore, combining these two types of lenses can compensate for and correct dispersion. "Chromatic aberration" refers to the difference in image caused by different monochromatic lights having different refractive indices when imaging with white light, so that different monochromatic lights have different propagation paths, resulting in the difference in optical paths caused by different monochromatic lights.

As shown in <FIG> and <FIG>, the vehicle pixelated lighting device provided in the present application includes a pixel illumination light source <NUM>, a light-transmitting element <NUM>, and a lens group <NUM> arranged in sequence from rear to front along the light-emitting direction. The light-transmitting element <NUM> is fixedly arranged between the pixel illumination light source <NUM> and the lens group <NUM>. The light emitted forward by the pixel illumination light source <NUM> can form a pixelated light shape after passing through the lens group <NUM>. The light-transmitting element <NUM> has a light incident surface facing the pixel illumination light source <NUM> and a light-emitting surface facing the lens group <NUM>. As shown in <FIG>, multiple light-emitting units <NUM> arranged in a matrix are provided on a front surface of the pixel illumination light source <NUM>. The light-emitting surfaces of the multiple light-emitting units <NUM> form an overall light-emitting surface <NUM> of the pixel illumination light source <NUM>. The overall light-emitting surface <NUM> faces the light incident surface of the lens group <NUM> and the light incident surface of the light-transmitting element <NUM>. The outer edge of the pixel illumination light source <NUM> is its boundary. The outer edge of the overall light-emitting surface <NUM> of the pixel illumination light source <NUM> is its boundary.

Specifically, as shown in <FIG>, the light-transmitting element <NUM> is arranged around the boundary of the pixel illumination light source <NUM> and covers at least a portion of the boundary of the overall light-emitting surface <NUM> of the pixel illumination light source <NUM>, that is, corresponding inner edges of the light-transmitting element <NUM> are located within the portion of the boundary of the overall light-emitting surface <NUM> covered by the light-transmitting element <NUM>. In this way, the light-transmitting element <NUM> may cover the lower boundary, upper boundary, left boundary, or right boundary of the overall light-emitting surface <NUM> of the pixel illumination light source <NUM>; or the light-transmitting element <NUM> may simultaneously cover both the lower and upper boundaries of the overall light-emitting surface <NUM> of the pixel illumination light source <NUM>; or the light-transmitting element <NUM> may simultaneously cover all the boundaries of the overall light-emitting surface <NUM> of the pixel illumination light source <NUM>. The overall light-emitting surface <NUM> of the pixel illumination light source <NUM> emits forward light rays. Some of these light rays enter the light-transmitting element <NUM> and are herein defined as incident rays P1 as shown in <FIG>. The pixel illumination light source <NUM> emits forward the incident rays P1 from a certain light-emitting point A, then the light-transmitting element <NUM> is used to change the deflection angle of the incident rays P1 entering it from the pixel illumination light source <NUM> and correspondingly emit deflected rays P2 after deflection to lens group <NUM>. The intersection points A1 and A2 between backward extension lines of the deflected rays P2 and a plane where the overall light-emitting surface <NUM> is located are located on outer sides of the light-emitting point A of the corresponding incident rays P1, i.e., the intersection points A1 and A2 are farther away from the center of the overall light-emitting surface <NUM> than the light-emitting point A.

When the light-transmitting element <NUM> is set only at the upper boundary of the pixel illumination light source <NUM> and covers only the upper boundary of the overall light-emitting surface <NUM> of the pixel illumination light source <NUM>, the overall light-emitting surface <NUM> of the pixel illumination light source <NUM> emits forward light rays, and the incident rays P1 emitted from the upper boundary portion of the overall light-emitting surface <NUM> enter the light-transmitting element <NUM>, as shown in <FIG>, the light-transmitting element <NUM> changes the deflection angle of these incident rays P1 and emits deflected rays P2, and then makes these deflected rays P2 enter the lens group <NUM>. Specifically, in <FIG>, if the light-transmitting element <NUM> is not set, two incident rays P1 emitted from the light-emitting point A respectively enter the lens group <NUM> along their original propagation directions S1 and Y1, and the imaging on the illumination screen is shown in <FIG>, where the lower boundary of the illumination area corresponding to the upper boundary of overall light-emitting surface <NUM> is not blurred. After setting the light-transmitting element <NUM> according to the present application, two incident rays P1 emitted from the light-emitting point A are deflected into deflected rays P2 after passing through the light-transmitting element <NUM>. Two deflected rays P2 respectively enter the lens group <NUM> along deflected propagation directions S2 and Y2. From <FIG>, it can be seen that the two incident rays P1 emit forward from the light-emitting point A, A1 is the intersection point of the reverse extension line of a first deflected light ray P2 corresponding to a first incident ray P1 along the S2 direction and the plane where the overall light-emitting surface <NUM> of the pixel illumination light source <NUM> is located. A2 is the intersection point of the reverse extension line of a second deflected light ray P2 corresponding to a second incident ray P1 along the Y2 direction and the plane where the overall light-emitting surface <NUM> of the pixel illumination light source <NUM> is located. Both the intersection points A1 and A2 are higher than the light-emitting point A, i.e., both the intersection points A1 and A2 are located outside the light-emitting point A and farther away from the center of the overall light-emitting surface <NUM> than the light-emitting point A. Since the lens group <NUM> shows inverted images, images of both the intersection points A1 and A2 on the screen are lower than the image of the light-emitting point A, i.e., images of both the intersection points A1 and A2 are located outside the image of the light-emitting point A, so there will be light below the original spot, resulting in a blurring effect. The images on an illumination screen after setting the light-transmitting element <NUM> according to the present application are shown in <FIG>, where the lower boundary of the illumination area corresponding to the upper boundary of overall light-emitting surface <NUM> has a blurring effect, the lower boundary of this part of illumination area extends downward (i.e., outward), equi-illuminance lines are sparser, and light is softer.

Similarly, when the light-transmitting element <NUM> is set only at the lower boundary of the pixel illumination light source <NUM> and covers only the lower boundary of the overall light-emitting surface <NUM> of the pixel illumination light source <NUM>, the light-transmitting element <NUM> deflects the light rays upward, causing light to appear above the original light spot of the pixelated light shape and achieving a blurring effect of the upper boundary of the pixelated light shape. When the light-transmitting element <NUM> is set only at the left boundary of the pixel illumination light source <NUM> and covers only the left boundary of the overall light-emitting surface <NUM> of the pixel illumination light source <NUM>, the light-transmitting element <NUM> deflects the light rays to the right, causing light to appear on the right side of the original light spot of the pixelated light shape and achieving a blurring effect of the right boundary of the pixelated light shape. When the light-transmitting element <NUM> is set only at the right boundary of the pixel illumination light source <NUM> and covers only the right boundary of the overall light-emitting surface <NUM> of the pixel illumination light source <NUM>, the light-transmitting element <NUM> deflects the light rays to the left, causing light to appear on the left side of the original light spot of the pixelated light shape and achieving a blurring effect of the left boundary of the pixelated light shape.

Therefore, the present application provides a light-transmitting element <NUM> that covers at least part of the boundaries of the pixel illumination light source <NUM> at a boundary of the pixel illumination light source <NUM> to change the deflection angles of the light rays entering the light-transmitting element <NUM>. This causes these light rays to be deflected and form deflected light rays P2 that enter the lens group <NUM>. The intersection points of the reverse extension lines of the deflected light rays P2 and the plane where the overall light-emitting surface <NUM> is located are located outside the light-emitting point of the incident light rays P1 corresponding to the deflected light P2. Therefore, after passing through the lens group <NUM>, these light rays have a larger exit angle, which makes it possible for the light rays entering the light-transmitting element <NUM> to extend directionally toward the outside of the pixelated light shape, thereby achieving a blurring effect of the boundary of the pixelated light shape and makes the pixelated light shape transition softly at its blurred boundary. Finally, it makes it possible for the superimposed shape transitions uneven and has poor continuity at the superimposed boundary c1 after superimposing the pixelated light shape and the non-pixelated light shape, as shown in <FIG>. In addition, by blurring the boundary of the pixelated light shape through the light-transmitting element <NUM>, the present application does not block the light rays and therefore does not lose energy, thereby increasing light energy utilization efficiency. At the same time, since the illumination range of the blurred pixelated light shape is larger, the blurring effect will also expand the illumination range of the whole light shape. The light-transmitting element <NUM> is set at the boundary, so imaging light shapes of pixels at central areas will not be blurred. Pixels at the boundary are blurred along the boundary direction without affecting mutual shading between pixels, i.e., the blurred light will not enter adjacent pixel areas.

Preferably, in the present application, the light-transmitting element <NUM> covers at least the upper boundary of the pixel illumination light source <NUM> and at least blurs the lower boundary of the pixelated light shape to make the transition on the road surface smoother and better connected to the auxiliary low beam shape. According to the invention, as shown in <FIG> and <FIG>, the light-transmitting element <NUM> is a loop member that covers all the boundaries of the pixel illumination light source <NUM>. When no light-transmitting element <NUM> is set up, the pixelated light shape formed is as shown in <FIG>, and the boundary of the entire light shape is sharp. After setting up a whole circle of light-transmitting element <NUM> according to the present application, the pixelated light shape formed is as shown in <FIG>, which blurs the entire circle of boundaries of the pixelated light shape and makes the entire boundary of the pixelated light shape transition softly. Thus, as shown in <FIG>, a pixelated light shape with a low beam cutoff line whose boundary is blurred is formed. The road simulation light shape formed by superimposing a pixelated light shape with a blurred boundary and a non-pixelated light shape is shown in <FIG>. It can be seen from <FIG> that there is a uniform transition and good continuity at their superimposed boundary c1.

Furthermore, in other embodiments that do not form part of the present invention, a light-transmitting element <NUM> that covers only the upper boundary of the overall light-emitting surface <NUM> may be set at the upper boundary of the pixel illumination light source <NUM>. In this case, light rays emitted from the upper boundary of the overall light-emitting surface <NUM> will be deflected downward while light rays emitted from the lower boundary and left and right boundaries will still propagate in their original directions without deflection. This will not affect illumination areas on the upper side and left and right sides. A light-transmitting element <NUM> that covers only the lower boundary of the overall light-emitting surface <NUM> may also be set at the lower boundary of the pixel illumination light source <NUM> to blur the upper boundary of the pixelated light shape to avoid discomfort caused by observing sharp boundaries while driving in tunnels. Therefore, depending on specific needs for blurring boundaries of pixelated light shapes, a light-transmitting element <NUM> can be set at corresponding boundaries of the pixel illumination light source <NUM>.

Furthermore, the light-transmitting element <NUM> is a silicone component, that is, the light-transmitting element <NUM> is made of silicone. While realizing the blurring of the boundary of the pixelated light shape, it can also effectively reduce the manufacturing cost. Preferably, the closer the light-transmitting element <NUM> is to the pixel illumination light source <NUM>, the better. In one embodiment, the distance between the pixel illumination light source <NUM> and the light-transmitting element <NUM> is less than or equal to <NUM> and preferably <NUM> to prevent contact or overheating. In other embodiments, the distance between the pixel illumination light source <NUM> and the light-transmitting element <NUM> may also be greater than <NUM>.

Furthermore, the light-emitting surface of the light-transmitting element <NUM> may be a flat surface, or a curved surface with patterns. The light incident surface of the light-transmitting element <NUM> may be a flat surface, or a curved surface with patterns. The light-transmitting elements <NUM> distributed on upper and lower sides or left and right sides of the pixel illumination light source <NUM> may be symmetrically arranged or not, as long as the light incident surface and light-emitting surface of the light-transmitting element <NUM> are matched to adjust the light-emitting angle of the light entering it so that the light is deflected to the desired light-emitting angle. Based on this, there are many specific forms of light-transmitting elements <NUM>. For example, as shown in <FIG>, the light incident surface on the rear side of the light-transmitting element <NUM> includes a vertical plane segment <NUM> extending up and down and an oblique plane segment <NUM> extending obliquely, and the light-emitting surface on the front side of the light-transmitting element <NUM> includes multiple oblique plane segments <NUM>. For example, as shown in <FIG>, the light incident surface on the rear side of the light-transmitting element <NUM> includes a vertical plane segment <NUM> extending up and down and being a flat structure, and the light-emitting surface on the front side of the light-transmitting element <NUM> includes multiple arc-shaped surface segments <NUM> and multiple horizontally extending horizontal plane segments <NUM>. For example, as shown in <FIG>, the light incident surface on the rear side of the light-transmitting element <NUM> includes a vertical plane segment <NUM> extending up and down and being a flat structure, and the light-emitting surface on the front side of the light-transmitting element <NUM> includes an oblique plane segment <NUM> extending obliquely.

Preferably, the pixel illumination light source <NUM> is a matrix-type LED light source with tens to hundreds of pixels, which has <NUM> pixels in one embodiment. The size of the pixel is about <NUM> in length, which can make the clarity of the formed pixel image higher, and then can realize higher precision control of the light shape formed after the pixel image is projected out. In this case, the boundary of the formed dark part and the change of the dark part position are also more delicate and smooth, which can better avoid dazzling or blindness to pedestrians or drivers. Moreover, the rectangular matrix arrangement of the LEDs provides a wider light shape to illuminate the areas on both sides of the road, which is conducive to drivers' observation of pedestrians and road signs on both sides of the road.

Furthermore, as shown in <FIG>, the vehicle pixelated lighting device further includes a lens holder <NUM>, a circuit board <NUM>, and a heat sink <NUM>. The lens group <NUM> includes a first lens <NUM>, a second lens <NUM>, and a third lens <NUM> arranged from back to front along the light-emitting direction. The first lens <NUM> is a lens with positive optical power, the second lens <NUM> is a lens with negative optical power, and the third lens <NUM> is a lens with positive optical power. The first lens <NUM>, the second lens <NUM> and the third lens <NUM> are all installed in the lens holder <NUM>. The pixel illumination light source <NUM> is installed on the circuit board <NUM>. The heat sink <NUM>, the circuit board <NUM>, and the lens holder <NUM> are fixedly connected in a sequence along the light-emitting direction. The light-transmitting element <NUM> is fixed on the lens holder <NUM> or the circuit board <NUM>.

Furthermore, as shown in <FIG>, the vehicle pixelated lighting device further includes a first limiting ring <NUM> and a second limiting ring <NUM>, both arranged inside the lens holder <NUM>, and a beam limiting element <NUM> threadedly connected to the front end of the lens holder <NUM>. The first limiting ring <NUM> and the second limiting ring <NUM> are fixedly assembled inside the lens holder <NUM> in a tight fit. The rear end of the inner wall of the lens holder <NUM> includes a first limiting portion <NUM> that bends and extends inwardly. The inner wall of the lens holder <NUM> includes a second limiting portion <NUM> and a third limiting portion <NUM> that protrude inwardly. The first limiting portion <NUM>, the first limiting ring <NUM>, the second limiting portion <NUM>, the second limiting ring <NUM>, the third limiting portion, and the beam limiting element <NUM> are sequentially distributed from back to front along the light-emitting direction. The outer peripheral surfaces of the first lens <NUM>, the second lens <NUM> and the third lens <NUM> are abutted against the inner wall of the lens holder <NUM>. The first lens <NUM> is limited between the first limiting portion <NUM> and the first limiting ring <NUM>. The second lens <NUM> is limited between the second limiting portion <NUM> and the second limiting ring <NUM>. The third lens <NUM> is limited between the third limiting portion <NUM> and the beam limiting element <NUM>. In this way, the first lens <NUM>, the second lens <NUM> and the third lens <NUM> are arranged in sequence and fixedly installed inside the lens holder <NUM>. The first lens is pressed into place by means of the first limiting ring <NUM> and the first limiting portion <NUM>. The second lens is pressed into place by means of the second limiting ring <NUM> and the second limiting portion <NUM>. The third lens is pressed into place by means of the beam limiting element <NUM> and third limiting portion <NUM>. Thus, the first lens <NUM>, the second lens <NUM> and the third lens <NUM> can be tightly arranged inside the lens holder <NUM> to effectively reduce the overall volume for miniaturization design. In addition, the present application limits the lens group <NUM> in the light-emitting direction through the first limiting ring <NUM>, the second limiting ring <NUM> and the beam limiting element <NUM> without additional limiting components inside the lens holder <NUM>. It can reduce the production cost to some extent by reducing requirements for the production accuracy on the lens holder <NUM>. The beam limiting element <NUM> is threadedly connected to the outer periphery at the front end of the lens holder <NUM>, thus the beam limiting element <NUM> and the lens holder <NUM> are detachably connected with each other for easy installation of the first lens <NUM>, the first limiting ring <NUM>, the second lens <NUM>, the second limiting ring <NUM> and the third lens <NUM> into the lens holder <NUM> in sequence. The beam limiting element <NUM> is preferably an aperture stop, which determines the amount of light beams passing through the lens group <NUM>.

Preferably, the rear end of the outer wall of the lens holder <NUM> may include a mounting seat that bends and extends outwardly. The circuit board <NUM> is mounted on the mounting seat, and the heat sink <NUM> is mounted on the rear side of the circuit board <NUM> for heat dissipation of the pixel illumination light source <NUM>. An opening may also be provided on the mounting seat for placing connectors to realize power supply to the circuit board <NUM> and the pixel illumination light source <NUM>, and also play a role in ventilation and heat dissipation to improve the heat dissipation power. In addition, the outer diameter of the first lens <NUM> is smaller than that of the second lens <NUM>, and the outer diameter of the second lens <NUM> is smaller than that of the third lens <NUM>, which is in tune with the light-emitting direction to ensure the efficiency of light transmission and improve illumination brightness.

Furthermore, the Abbe numbers of the materials of the first lens <NUM> and the third lens <NUM> are both greater than that of the material of the second lens <NUM>, which can help eliminate chromatic aberration. An Abbe number is a dispersion coefficient, which is used to measure the degree of dispersion of light in a transparent medium. Generally speaking, under the premise of equal optical power, the smaller the Abbe number of a medium, the more severe its chromatic dispersion; conversely, the larger the Abbe number of a medium, the less severe its chromatic dispersion. Preferably, the material of the first lens <NUM> is optical glass, such as optical glass with grade H-K9L, the material of the second lens <NUM> is polycarbonate (PC), and the material of the third lens <NUM> is polymethyl methacrylate (PMMA). Using these materials can better eliminate the chromatic aberration.

Preferably, as shown in <FIG>, a part or all of the outer peripheral surface of the first lens <NUM>, a part or all of the outer peripheral surface of the second lens <NUM>, and a part or all of the outer peripheral surface of the third lens <NUM> are respectively abutted and matched with the inner wall of the lens holder <NUM> to limit the radial movement of the first lens <NUM>, the second lens <NUM> and the third lens <NUM>. In addition, a lens flange structure <NUM> is provided on the outer peripheral side of the third lens <NUM>. The outer peripheral surface of the lens flange structure <NUM> is abutted with the inner wall of the lens holder <NUM>, which can ensure that the part used for light transmission will not be blocked by the connecting structure on the lens holder <NUM>, thereby ensuring the efficiency of light transmission and improving the illumination brightness. Moreover, the lens flange structure <NUM> is also used to abut with a light beam limiting element <NUM> and the third limiting portion <NUM> to fix and limit the third lens <NUM> between the light beam limiting element <NUM> and the third limiting portion <NUM>.

Furthermore, a light incident surface and/or a light-emitting surface of at least one of the first lens <NUM>, the second lens <NUM>, and the third lens <NUM> is provided with an anti-reflection film, which can improve the transmittance of the light incident surface or the light-emitting surface provided with the anti-reflection film, enhance the transmittance performance and improve the illumination brightness. In addition, a light-shielding layer is provided on an outer peripheral surface of the first lens <NUM>, an outer peripheral surface of the second lens <NUM>, and the lens flange structure <NUM> of the third lens <NUM> to reduce light emitted from edges of the first lens <NUM>, the second lens <NUM>, and the third lens <NUM>. The light-shielding layer may be formed by sandblasting black processing to prevent stray light; or alternatively, the light-shielding layer may be formed by plating an anti-reflection film to prevent stray light, so that a light shape formed by projecting a pixel image can be consistent with the pixel image without generating scattered spots.

As mentioned above, the present invention effectively overcomes various shortcomings in the existing technology and has high industrial utilization value.

Claim 1:
A vehicle pixelated lighting device, comprising a pixel illumination light source (<NUM>) and a lens group (<NUM>) arranged along a light-emitting direction, the pixel illumination light source (<NUM>) having an overall light-emitting surface (<NUM>) facing the lens group (<NUM>), wherein the device further comprises a light-transmitting element (<NUM>) fixedly arranged between the pixel illumination light source (<NUM>) and the lens group (<NUM>), wherein the light-transmitting element (<NUM>) is arranged at a boundary of the pixel illumination light source (<NUM>) and covers at least a part of a boundary of the overall light-emitting surface (<NUM>) of the pixel illumination light source (<NUM>); wherein the light-transmitting element (<NUM>) comprises a light incident surface facing the pixel illumination light source (<NUM>) and a light-emitting surface facing the lens group (<NUM>); wherein the light-transmitting element (<NUM>) is used for changing a deflection angle of a light ray from the pixel illumination light source (<NUM>), and emitting a deflected light ray to the lens group (<NUM>), wherein a reverse extension line of the deflected light ray intersects with a plane where the overall light-emitting surface (<NUM>) is located at a position outside of a light-emitting point of the incident light ray corresponding to the deflected light ray,
wherein the light-emitting surface of the light-transmitting element (<NUM>) comprises at least one of an arc-shaped surface segment (<NUM>), a vertical plane segment (<NUM>), a horizontal plane segment (<NUM>), and an oblique plane segment (<NUM>);
or
the light incident surface of the light-transmitting element (<NUM>) comprises at least one of an arc-shaped surface segment (<NUM>), a vertical plane segment (<NUM>), a horizontal plane segment (<NUM>), and an oblique plane segment (<NUM>),
characterized in that the light-transmitting element (<NUM>) is a loop member that covers all boundaries of the overall light-emitting surface (<NUM>) of the pixel illumination light source (<NUM>).