Miniaturized lens module and vehicle lamp

Abstract

The utility model provides a miniaturized lens module and a car lamp. The miniaturized lens module comprises a lens, a mounting frame, a substrate, a lamp bead, a reflection cup and a heat dissipation assembly. The lens is a curved surface body formed by cutting an aspherical lens through two planes, and comprises a rear plane for light incidence, a front convex surface for light emission, a top plane with D-shaped edge lines and a bottom plane with D-shaped edge lines. The lens is fixed on the mounting frame, the substrate is detachably and fixedly connected with the rear end face of the mounting frame, the lamp bead is located in the reflection cup, and the lamp bead and the reflection cup are mounted on the substrate together. The heat dissipation assembly is installed on the back face of the substrate. According to the utility model, by improving the structure of the lens, the space occupied by the lens is effectively reduced, and the miniaturization and integration development of the lens module is facilitated.

Description

Technical Field

[0001] This utility model relates to lighting equipment, specifically a miniaturized lens module and vehicle lamp. Background Technology

[0002] As a core component of optical systems, lens modules play a crucial role in numerous applications requiring precise control of light propagation. Their applications range from camera lenses, microscopes, telescopes, to vehicle lighting systems, all of which rely on lens modules for effective light manipulation. Particularly in vehicle lighting systems, the function of lens modules is paramount. They not only collect and focus light from the light source but also ensure that the resulting beam is uniform and highly directional, which is essential for improving driving safety at night or in low-light conditions.

[0003] Traditionally, lens modules primarily use spherical wafers as core optical components. Through precision machining techniques, convex or concave lenses with varying radii of curvature are manufactured to meet different application requirements and achieve the desired optical performance. However, with technological advancements and changing market demands, this traditional design approach has gradually revealed some shortcomings. Especially against the backdrop of rapid development in the automotive industry, size has become a significant factor limiting the further development of lens modules.

[0004] The inherent structural characteristics of spherical wafers limit the size of the entire lens module, making it difficult to meet the compact and lightweight design requirements of modern automobiles. In the space-constrained interior environment of a car, efficiently utilizing every inch of space has become a major challenge for designers. Furthermore, with the development of electric vehicles and autonomous driving technologies, the market demands increasingly smaller and more integrated in-vehicle devices, further highlighting the disadvantage of the large size of existing lens modules. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a miniaturized lens module and vehicle headlight. By cutting a traditional spherical lens through two planes, the resulting lens includes a rear plane for light input and a front convex surface for light output, as well as a top and bottom plane with "D"-shaped edges. This reduces the space occupied by the lens and is beneficial for the miniaturization and integration of lens modules.

[0006] This utility model achieves the above-mentioned technical objectives through the following technical means.

[0007] A miniaturized lens module includes a lens, a mounting bracket, a substrate, LED chips, a reflector, and a heat dissipation component;

[0008] The lens is a curved surface formed by cutting an aspherical lens through two planes, including a rear plane for light entry and a front convex surface for light exit, as well as a top plane and a bottom plane with "D"-shaped edges, and the curvature of the upper half of the front convex surface is less than that of the lower half; the mounting bracket has a through hole adapted to the outer contour of the lens, the lens is embedded and fixed in the through hole, and its front convex surface is disposed away from the mounting bracket; the substrate is detachably fixed to the rear end face of the mounting bracket, the lamp bead is located in the reflector cup and is mounted on the substrate together with the reflector cup, and the light outlet of the reflector cup is opposite to the rear plane of the lens; the heat dissipation component is installed on the back of the substrate to dissipate the heat of the lamp bead.

[0009] Furthermore, the intersection lines of the top plane, bottom plane, and rear plane are parallel to each other, and the top plane and bottom plane gradually converge in the direction of light propagation.

[0010] Furthermore, the length of the intersection line between the top plane and the rear plane of the lens is 35-40 mm, the length of the intersection line between the bottom plane and the rear plane of the lens is 25-30 mm, and the distance from the top plane to the optical center of the lens is equal to the distance from the rear plane to the optical center of the lens.

[0011] Furthermore, it also includes a light-blocking sheet mounted on the substrate, the light-blocking sheet being located inside the reflector cup and between the lamp bead and the lens, the light-blocking sheet being an arc-shaped structure convex toward one side of the lamp bead.

[0012] Furthermore, the light-blocking sheet is threadedly connected to the substrate by bolts.

[0013] Furthermore, the top of the reflector cup tapers towards one side of the substrate.

[0014] Furthermore, the heat dissipation assembly includes a heat dissipation plate mounted on the back of the substrate, a fan mounted on the heat dissipation plate, and a plurality of heat-conducting columns mounted between the heat dissipation plate and the fan, wherein the heat-conducting columns are arranged in a matrix on the heat dissipation plate.

[0015] Furthermore, the lens has a mounting portion on its side that snaps into the mounting bracket, and the front convex surface of the lens has a smooth transition with the top and bottom planes.

[0016] Furthermore, the lens is made of glass, the mounting bracket is made of polybutylene terephthalate, the reflector is made of PC plastic with a mirror-like reflective surface inside, and the substrate is made of aluminum.

[0017] Vehicle lights that include any of the miniaturized lens modules described above.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This invention cuts a traditional aspherical lens using two planes to obtain a novel lens comprising a rear plane for light entry, a front convex surface for light exit, and a top and bottom plane with "D"-shaped edges. This design not only significantly reduces the space occupied by the lens but also makes the entire lens module more compact. Compared to traditional designs, this innovation helps drive the development of lens modules towards miniaturization and high integration, making them more suitable for space-constrained environments.

[0020] 2. In this invention, the curvature of the upper lens is less than that of the lower lens. In low beam mode, part of the light emitted by the light source is blocked by the light shield, while the remaining light is emitted through the upper part of the lens. Due to the smaller curvature, the light is effectively deflected to both sides, thereby expanding the horizontal diffusion angle of the light and significantly enhancing the illumination range and field of vision on both sides of the vehicle. When switching to high beam mode, the increased curvature enhances the light converging ability, helping to maintain the vertical concentration of the light and ensuring clearer and more focused illumination of distant objects. This design ensures both driving safety and improves the driving experience.

[0021] 3. Compared with common spherical lenses, the aspherical lens in this invention can more accurately control the refraction and focusing of light, effectively compensating for changes in optical performance caused by cutting. Furthermore, the cutting of the lens occurs on the top and bottom planes with "D"-shaped edge lines, rather than other optically effective areas. These planes mainly serve the functions of installation and fixation, and do not directly participate in the refraction and focusing of light. Therefore, cutting will not affect the core optical function of the lens.

[0022] 4. The lens module of this utility model utilizes the blocking and adjustment function of the light-blocking plate to achieve precise formation and stable output of the low beam pattern. When it needs to be used as a high beam lens module, simply remove the light-blocking plate to remove the restriction on the light, allowing the light to be emitted in a wider and more concentrated manner, thereby achieving the high beam function and effectively meeting the lighting needs in different scenarios. Attached Figure Description

[0023] Figure 1 This is a perspective view of the miniaturized lens module described in this utility model.

[0024] Figure 2 This is a schematic diagram of the structure of the lens described in this utility model.

[0025] Figure 3 This is a cross-sectional view of the miniaturized lens module described in this utility model.

[0026] The attached figures are labeled as follows:

[0027] 1-Lens; 1-1 Rear plane; 1-2 Front convex surface; 1-3 Top plane; 1-4 Bottom plane; 2-Mounting bracket; 3-Substrate; 4-LED bead; 5-Reflector; 6-Light shield; 7-Heat sink; 8-Fan; 9-Heat conduction column. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0029] The miniaturized lens module described in this embodiment includes a lens 1, a mounting bracket 2, a substrate 3, an LED bead 4, a reflector 5, a light-blocking sheet 6, and a heat dissipation assembly. Figure 1 This is a perspective view of the miniaturized lens module described in this embodiment.

[0030] The lens 1 is made of glass and is a curved body formed by cutting an aspherical lens through two planes. It includes a rear plane 1-1 for light entry and a convex front surface 1-2 for light exit, as well as a top plane 1-3 and a bottom plane 1-4 with "D"-shaped edges. The intersection lines of the top plane 1-3, bottom plane 1-4, and rear plane 1-1 are parallel to each other, and the top plane 1-3 and bottom plane 1-4 gradually converge in the direction of light propagation. In this embodiment, the length of the intersection line between the top plane 1-3 and rear plane 1-1 is 38mm, and the length of the intersection line between the bottom plane 1-4 and rear plane 1-1 is 28mm. Furthermore, the distance from the top plane 1-3 to the optical center of the lens 1 is equal to the distance from the rear plane 1-1 to the optical center of the lens 1. Figure 2 This is a schematic diagram of the lens structure described in this embodiment.

[0031] The mounting bracket 2 is made of polybutylene terephthalate (PET). It has a through-hole that matches the outer contour of the lens 1. The lens 1 is embedded and fixed within the through-hole, with its convex front surface 1-2 facing away from the mounting bracket 2. The side of the lens 1 has a mounting portion that snaps into the mounting bracket 2. The convex front surface 1-2 of the lens 1 has smooth transitions with the top plane 1-3 and the bottom plane 1-4. The substrate 3 is detachably fixed to the rear end face of the mounting bracket 2 using bolts. The substrate 3 is made of aluminum. The LED bead 4 and the light-blocking plate 6 are both located within the reflector cup 5 and are mounted on the substrate 3 together with the reflector cup 5. The light outlet of the reflector cup 5 is opposite to the rear plane 1-1 of the lens 1. The top of the reflector cup 5 tapers towards one side of the substrate 3. The reflector cup 5 is made of PC plastic and has a mirror-like reflective surface inside. The light-blocking plate 6 is threadedly connected to the substrate 3 by bolts. The light-blocking plate 6 is located between the lamp bead 4 and the lens 1. The light-blocking plate 6 is an arc-shaped structure that bulges towards one side of the lamp bead 4. Figure 3 This is a cross-sectional view of the miniaturized lens module described in this embodiment.

[0032] The heat dissipation assembly includes a heat dissipation plate 7 mounted on the back of the substrate 3, a fan 8 mounted on the heat dissipation plate 7, and a number of heat-conducting columns 9 mounted between the heat dissipation plate 7 and the fan 8, wherein the heat-conducting columns 9 are arranged in a matrix on the heat dissipation plate 7.

[0033] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention shall fall within the protection scope of the present invention.

Claims

1. A miniaturized lens module, characterized in that, It includes a lens (1), a mounting bracket (2), a substrate (3), LED beads (4), a reflector (5), and a heat dissipation assembly; The lens (1) is a curved body formed by cutting an aspherical lens through two planes, including a rear plane (1-1) for light to enter and a front convex surface (1-2) for light to exit, as well as a top plane (1-3) and a bottom plane (1-4) with "D"-shaped edges. The curvature of the upper half of the front convex surface (1-2) is less than that of the lower half. The mounting bracket (2) has a through hole that matches the outer contour of the lens (1), and the lens (1) is embedded in it. It is fixed in the through hole, and its front convex surface (1-2) is set away from the mounting bracket (2); the substrate (3) is detachably fixed to the rear end face of the mounting bracket (2), the lamp bead (4) is located in the reflector cup (5) and is installed on the substrate (3) together with the reflector cup (5), and the light outlet of the reflector cup (5) is set opposite to the rear plane (1-1) of the lens (1); the heat dissipation component is installed on the back of the substrate (3) to dissipate the heat of the lamp bead (4).

2. The miniaturized lens module according to claim 1, characterized in that, The lines of intersection of the top plane (1-3), the bottom plane (1-4), and the rear plane (1-1) are parallel to each other, and the top plane (1-3) and the bottom plane (1-4) gradually converge in the direction of light propagation.

3. The miniaturized lens module according to claim 1, characterized in that, The length of the intersection line between the top plane (1-3) and the rear plane (1-1) of the lens (1) is 35~40mm, the length of the intersection line between the bottom plane (1-4) and the rear plane (1-1) of the lens (1) is 25~30mm, and the distance from the top plane (1-3) to the optical center of the lens (1) is equal to the distance from the rear plane (1-1) to the optical center of the lens (1).

4. The miniaturized lens module according to claim 1, characterized in that, It also includes a light-blocking plate (6) mounted on the substrate (3), the light-blocking plate (6) is located inside the reflector (5), and the light-blocking plate (6) is located between the lamp bead (4) and the lens (1), and the light-blocking plate (6) is an arc-shaped structure that protrudes towards the lamp bead (4).

5. The miniaturized lens module according to claim 4, characterized in that, The light-blocking plate (6) is threadedly connected to the substrate (3) by bolts.

6. The miniaturized lens module according to claim 4, characterized in that, The top of the reflector cup (5) converges towards the substrate (3).

7. The miniaturized lens module according to claim 1, characterized in that, The heat dissipation assembly includes a heat dissipation plate (7) mounted on the back of the substrate (3), a fan (8) mounted on the heat dissipation plate (7), and a number of heat-conducting columns (9) mounted between the heat dissipation plate (7) and the fan (8), and the heat-conducting columns (9) are arranged in a matrix on the heat dissipation plate (7).

8. The miniaturized lens module according to claim 1, characterized in that, The lens (1) has a mounting part on its side that is snapped into the mounting bracket (2). The front convex surface (1-2) of the lens (1) is smoothly transitioned to the top plane (1-3) and the bottom plane (1-4).

9. The miniaturized lens module according to claim 1, characterized in that, The lens (1) is made of glass, the mounting bracket (2) is made of polybutylene terephthalate, the reflector cup (5) is made of PC plastic and has a mirror reflective surface inside, and the substrate (3) is made of aluminum.

10. A vehicle lamp comprising a miniaturized lens module according to any one of claims 1 to 9, characterized in that, Includes the miniaturized lens module according to any one of claims 1 to 9.

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