High-efficiency and high-uniformity light-condensing and light-splitting structure

Abstract

The utility model discloses a high-efficiency and high-uniformity light-gathering and light-splitting structure which comprises a thick-wall piece, a light-gathering device matched with an LED lamp bead is arranged on one side of the upper end face of the thick-wall piece, optical patterns are arranged on the side face, away from the light-gathering device, of the thick-wall piece, and a W-shaped light-splitting total-reflection structure is arranged on the side face, close to the light-gathering device, of the thick-wall piece. A V-shaped light-splitting total-reflection structure is arranged at the position, corresponding to the condenser, of the lower end face of the thick-wall part, the condenser converts light emitted by the LED lamp beads into parallel light and emits the parallel light to the V-shaped light-splitting total-reflection structure, and the V-shaped light-splitting total-reflection structure reflects part of the parallel light to the optical patterns. The V-shaped light splitting total reflection structure reflects the other part of parallel light to the W-shaped light splitting total reflection structure, and the W-shaped light splitting total reflection structure reflects the parallel light to the optical patterns, so that the light is reflected for multiple times, the uniformity of the light can be improved, meanwhile, the illumination range can be enlarged, the illumination range of a single LED lamp bead is enlarged, and the illumination efficiency is improved. And the light guide efficiency is enhanced.

Description

Technical field:

[0001] The utility model relates to the technical field of optical device products, in particular to a light-collecting and light-splitting structure with high efficiency and high uniformity. Background technology:

[0002] As LEDs become increasingly common as vehicle lighting sources, more and more headlights are pursuing more innovative designs, in addition to meeting basic regulatory requirements. The implementation of these lamp functions is also becoming increasingly diverse, with thick-walled concentrators being a common approach.

[0003] A Chinese utility model patent, granted with the publication number CN207065463U, discloses a thick-walled concentrator luminous structure for automotive lamps. This structure includes an LED circuit board, LED particles, and a corner thick-walled concentrator. The inner end of the corner thick-walled concentrator has a Fresnel pattern for generating parallel light, and a total reflection oblique plane at the corner. The outer surface of the corner thick-walled concentrator has a pattern that diffuses light. The LED particles are fixed to the LED circuit board and aligned with the inner end of the corner thick-walled concentrator. This thick-walled concentrator luminous structure achieves a more uniform lighting effect, avoiding the LED graininess and dark areas associated with traditional designs. It effectively addresses the visible appearance issues of traditional direct-beam concentrator circuit boards and offers high energy efficiency.

[0004] The above-mentioned thick-walled concentrator luminous structure of the headlight still has the following shortcomings: the corner thick-walled concentrator in the thick-walled concentrator luminous structure of the headlight only reflects light through a total reflection inclined plane, that is, after the LED particles emit light, the light is only reflected once by the total reflection inclined plane and then emitted out of the corner thick-walled concentrator. This only improves the uniformity of light to a certain extent, but its effect is still lacking, and most of the light cannot be reflected well to the light-emitting surface, which leads to low light guiding efficiency and lack of brightness. The range that a single LED can illuminate is small and cannot meet the use requirements.

[0005] In view of this, the inventors propose the following technical solutions. Utility model content:

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a light-collecting and light-splitting structure with high efficiency and high uniformity.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: the high-efficiency and high-uniformity focusing and splitting structure includes a thick-walled part, a concentrator adapted to the LED lamp bead is provided on one side of the upper end face of the thick-walled part, and an optical pattern for enhancing light uniformity is provided on the side of the thick-walled part away from the concentrator. A plurality of continuously horizontally distributed W-shaped splitting total reflection structures are provided on the side of the thick-walled part close to the concentrator, and a vertically distributed V-shaped splitting total reflection structure is provided at the position corresponding to the concentrator on the lower end face of the thick-walled part. The concentrator converts the light emitted by the LED lamp bead into parallel light and directs it toward the V-shaped splitting total reflection structure. The V-shaped splitting total reflection structure reflects part of the parallel light to the optical pattern, and the V-shaped splitting total reflection structure reflects another part of the parallel light to the W-shaped splitting total reflection structure, and the W-shaped splitting total reflection structure reflects the parallel light to the optical pattern.

[0008] Furthermore, in the above technical solution, the W-shaped light-splitting total reflection structure has four first, second, third and fourth light-splitting total reflection surfaces distributed in a W shape, wherein the junction of the second light-splitting total reflection surface and the third light-splitting total reflection surface faces the concentrator; the V-shaped light-splitting total reflection structure has two fifth light-splitting total reflection surfaces and the sixth light-splitting total reflection surface distributed in a V shape, wherein the junction of the fifth light-splitting total reflection surface and the sixth light-splitting total reflection surface faces the concentrator from bottom to top; the concentrator concentrates the light emitted by the LED lamp beads The light is converted into parallel light and emitted to the fifth and sixth light-splitting total reflection surfaces of the V-shaped light-splitting total reflection structure, wherein the sixth light-splitting total reflection surface reflects the parallel light to the optical pattern, the fifth light-splitting total reflection surface reflects the parallel light to the second light-splitting total reflection surface and the third light-splitting total reflection surface, and the second light-splitting total reflection surface and the third light-splitting total reflection surface respectively reflect the parallel light to the first light-splitting total reflection surface and the fourth light-splitting total reflection surface, and finally the first light-splitting total reflection surface and the fourth light-splitting total reflection surface reflect the parallel light to the optical pattern.

[0009] Furthermore, in the above technical solution, the concentrator is in the shape of a truncated cone with a small top and a large bottom, which protrudes from the upper end surface of the thick-walled part. The upper end of the concentrator has a circular groove, and the bottom surface of the circular groove is set to a spherical convex surface.

[0010] Furthermore, in the above technical solution, the circular groove is in the shape of a cylinder that is larger at the top and smaller at the bottom.

[0011] Furthermore, in the above technical solution, the ends of the first and second light-splitting total reflection surfaces are in contact, and the angle between them is a right angle; the ends of the second and third light-splitting total reflection surfaces are in contact, and the angle between them is a right angle; the ends of the third and fourth light-splitting total reflection surfaces are in contact, and the angle between them is a right angle.

[0012] Furthermore, in the above technical solution, the lower ends of the fifth and sixth light-splitting total reflection surfaces are in contact with each other, and the angle between them is a right angle.

[0013] Furthermore, in the above technical solution, there are multiple concentrators, which are distributed in a straight line on the upper end surface of the thick-walled part, and each is equipped with a W-shaped splitting total reflection structure and a V-shaped splitting total reflection structure.

[0014] Furthermore, in the above technical solution, the thick-walled part is in the shape of a flat plate.

[0015] Furthermore, in the above technical solution, the optical pattern includes a plurality of convex arc surfaces distributed in a matrix.

[0016] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the existing technology: the utility model adds a V-shaped splitting total reflection structure on the lower end face of the thick-walled part, and adds a W-shaped splitting total reflection structure on the side of the thick-walled part close to the concentrator, so that during specific operation, the concentrator converts the light emitted by the LED lamp bead into parallel light and emits it to the V-shaped splitting total reflection structure. The V-shaped splitting total reflection structure divides the parallel light into two parts, among which the V-shaped splitting total reflection structure reflects a part of the parallel light to the optical pattern, and directly improves the uniformity of the light through the optical pattern before emitting it, and the V-shaped splitting total reflection structure reflects the other part of the parallel light to the W-shaped splitting total reflection structure, and the W-shaped splitting total reflection structure reflects the parallel light to the optical pattern, and then improves the uniformity of the light through the optical pattern before emitting it, thereby realizing multiple reflections of the light, thereby improving the uniformity of the light, and at the same time expanding the illumination range, so that the range that a single LED lamp bead can illuminate is expanded, and the light guiding efficiency is enhanced, so that it can meet the use requirements. Description of the drawings:

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 It is a three-dimensional diagram of the present invention from another perspective;

[0020] Figure 4 It is a structural diagram of the present utility model. Specific implementation method:

[0021] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0022] See Figure 1-4As shown, a high-efficiency and high-uniformity focusing and splitting structure is provided, which includes a thick-walled part 1, on one side of the upper end face of which a concentrator 11 adapted to the LED lamp bead 2 is provided, and on the side of the thick-walled part 1 away from the concentrator 11 an optical pattern 12 for enhancing light uniformity is provided.

[0023] A plurality of continuously horizontally distributed W-shaped light-splitting total reflection structures 13 are provided on one side of the thick-walled part 1 close to the concentrator 11, and a vertically distributed V-shaped light-splitting total reflection structure 14 is provided on the lower end surface of the thick-walled part 1 corresponding to the position of the concentrator 11. The concentrator 11 converts the light emitted by the LED lamp bead 2 into parallel light and directs it toward the V-shaped light-splitting total reflection structure 14. The V-shaped light-splitting total reflection structure 14 reflects a part of the parallel light to the optical pattern, and the V-shaped light-splitting total reflection structure 14 reflects another part of the parallel light to the W-shaped light-splitting total reflection structure 13, and the W-shaped light-splitting total reflection structure 13 reflects the parallel light to the optical pattern 12. That is to say, the present invention adds a V-shaped light-splitting total reflection structure 14 to the lower end surface of the thick-walled part 1, and adds a W-shaped light-splitting total reflection structure 13 to the side of the thick-walled part 1 close to the concentrator 11, so that when working, the concentrator 11 converts the light emitted by the LED lamp bead 2 into parallel light and emits it to the V-shaped light-splitting total reflection structure 14, and the V-shaped light-splitting total reflection structure 14 divides the parallel light into two parts, wherein the V-shaped light-splitting total reflection structure 14 reflects a part of the parallel light to the optical pattern, which directly passes through the optical pattern. The pattern 12 improves the uniformity of the light and then emits it, and the V-shaped splitting total reflection structure 14 reflects another part of the parallel light to the W-shaped splitting total reflection structure 13, and the W-shaped splitting total reflection structure 13 reflects the parallel light to the optical pattern 12, and then the light is improved in uniformity through the optical pattern 12 and then emitted, thereby realizing multiple reflections of the light, thereby improving the uniformity of the light and expanding the illumination range, so that the range that a single LED lamp bead 2 can illuminate is expanded, and the light guiding efficiency is enhanced, so that it can meet the use requirements.

[0024] Specifically, the W-shaped light-splitting total reflection structure 13 has four first, second, third and fourth light-splitting total reflection surfaces distributed in a W shape, wherein the junction of the second light-splitting total reflection surface 132 and the third light-splitting total reflection surface 133 faces the concentrator 11; the V-shaped light-splitting total reflection structure 14 has two fifth light-splitting total reflection surfaces 141 and the sixth light-splitting total reflection surface 142 distributed in a V shape, wherein the junction of the fifth light-splitting total reflection surface 141 and the sixth light-splitting total reflection surface 142 faces the concentrator 11 from bottom to top; the concentrator 11 converts the light emitted by the LED lamp bead 2 into parallel light and emits it to the fifth and sixth light-splitting total reflection surfaces of the V-shaped light-splitting total reflection structure 14, wherein the sixth light-splitting total reflection surface 1 42 reflects the parallel light to the optical pattern 12, the fifth light-splitting total reflection surface 141 reflects the parallel light to the second light-splitting total reflection surface 132 and the third light-splitting total reflection surface 133, realizing one total reflection, and the second light-splitting total reflection surface 132 and the third light-splitting total reflection surface 133 respectively reflect the parallel light to the first light-splitting total reflection surface 131 and the fourth light-splitting total reflection surface 134, realizing two total reflections, and finally the first light-splitting total reflection surface 131 and the fourth light-splitting total reflection surface 134 reflect the parallel light to the optical pattern 12, realizing three total reflections, thereby realizing multiple reflections of the light, thereby improving the uniformity of the light, and at the same time expanding the illumination range, so that the range that a single LED lamp bead 2 can illuminate is expanded.

[0025] The concentrator 11 is shaped like a truncated cone, smaller at the top and larger at the bottom. It protrudes from the upper end surface of the thick-walled member 1. The concentrator 11 has a circular groove 111 at its top, and the bottom surface of the circular groove 111 is configured as a spherical convex surface 112. This structure of the concentrator 11 can effectively convert the light emitted by the LED lamp beads 2 into parallel light. The circular groove 111 is cylindrical, larger at the top and smaller at the bottom.

[0026] The ends of the first and second light-splitting total reflection surfaces are in contact with each other, and the angle between them is a right angle; the ends of the second and third light-splitting total reflection surfaces are in contact with each other, and the angle between them is a right angle; the ends of the third and fourth light-splitting total reflection surfaces are in contact with each other, and the angle between them is a right angle, so that the first, second, third, and fourth light-splitting total reflection surfaces can reflect light more accurately.

[0027] The lower ends of the fifth and sixth light-splitting total reflection surfaces are in contact with each other, and the angle between them is a right angle, which can reflect light more accurately.

[0028] There are multiple concentrators 11, which are spaced apart in a straight line on the upper end surface of the thick-walled member 1, and each is equipped with a W-shaped light-splitting total reflection structure 13 and a V-shaped light-splitting total reflection structure 14. The coordinated design of the W-shaped light-splitting total reflection structure 13 and the V-shaped light-splitting total reflection structure 14 not only expands the range that can be illuminated by a single LED lamp bead 2, but also allows for a larger LED spacing (up to twice the spacing of LED lamp beads suitable for conventional thick-walled members, specifically 24mm or more) while ensuring high uniformity, thereby reducing the number of LED lamp beads and significantly reducing costs.

[0029] The thick-walled part 1 is in the shape of a flat plate.

[0030] The optical pattern 12 includes a plurality of convex arc surfaces distributed in a matrix, which can better improve the uniformity of light.

[0031] In summary, the present invention adds a V-shaped light splitting total reflection structure 14 to the lower end surface of the thick-walled member 1, and adds a W-shaped light splitting total reflection structure 13 to the side of the thick-walled member 1 close to the concentrator 11, so that when working, the concentrator 11 converts the light emitted by the LED lamp bead 2 into parallel light and emits it to the V-shaped light splitting total reflection structure 14, and the V-shaped light splitting total reflection structure 14 divides the parallel light into two parts, wherein the V-shaped light splitting total reflection structure 14 reflects a part of the parallel light to the optical pattern, directly passing through the optical pattern. The pattern 12 improves the uniformity of the light and then emits it, and the V-shaped splitting total reflection structure 14 reflects another part of the parallel light to the W-shaped splitting total reflection structure 13, and the W-shaped splitting total reflection structure 13 reflects the parallel light to the optical pattern 12, and then the light is improved in uniformity through the optical pattern 12 and then emitted, thereby realizing multiple reflections of the light, thereby improving the uniformity of the light and expanding the illumination range, so that the range that a single LED lamp bead 2 can illuminate is expanded, and the light guiding efficiency is enhanced, so that it can meet the use requirements.

[0032] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A high-efficiency and high-uniformity light-collecting and light-splitting structure, comprising a thick-walled member (1), a concentrator (11) adapted to an LED lamp bead (2) being provided on one side of the upper end face of the thick-walled member (1), and an optical pattern (12) for enhancing light uniformity being provided on a side of the thick-walled member (1) away from the concentrator (11), characterized in that: A plurality of continuously horizontally distributed W-shaped light splitting total reflection structures (13) are provided on one side of the thick-walled member (1) close to the concentrator (11); a vertically distributed V-shaped light splitting total reflection structure (14) is provided on the lower end surface of the thick-walled member (1) at a position corresponding to the concentrator (11); the concentrator (11) converts the light emitted by the LED lamp bead (2) into parallel light and directs it toward the V-shaped light splitting total reflection structure (14); the V-shaped light splitting total reflection structure (14) reflects a portion of the parallel light to the optical pattern; the V-shaped light splitting total reflection structure (14) reflects another portion of the parallel light to the W-shaped light splitting total reflection structure (13); and the W-shaped light splitting total reflection structure (13) reflects the parallel light to the optical pattern (12).

2. The high-efficiency and high-uniformity light-collecting and light-splitting structure according to claim 1, characterized in that: The W-shaped light splitting total reflection structure (13) has four first, second, third and fourth light splitting total reflection surfaces distributed in a W shape, wherein the junction of the second light splitting total reflection surface (132) and the third light splitting total reflection surface (133) faces the concentrator (11); the V-shaped light splitting total reflection structure (14) has two fifth light splitting total reflection surfaces (141) and sixth light splitting total reflection surfaces (142) distributed in a V shape, wherein the junction of the fifth light splitting total reflection surface (141) and the sixth light splitting total reflection surface (142) faces the concentrator (11) from bottom to top; the concentrator (11) converts the light emitted by the LED lamp bead (2) into parallel light and emits it toward the V The invention relates to a fifth and sixth light-splitting total reflection surfaces of a light-splitting total reflection structure (14), wherein the sixth light-splitting total reflection surface (142) reflects parallel light to the optical pattern (12), the fifth light-splitting total reflection surface (141) reflects parallel light to the second light-splitting total reflection surface (132) and the third light-splitting total reflection surface (133), and the second light-splitting total reflection surface (132) and the third light-splitting total reflection surface (133) respectively reflect parallel light to the first light-splitting total reflection surface (131) and the fourth light-splitting total reflection surface (134), and finally the first light-splitting total reflection surface (131) and the fourth light-splitting total reflection surface (134) reflect the parallel light to the optical pattern (12).

3. The high-efficiency and high-uniformity light-collecting and light-splitting structure according to claim 1, characterized in that: The concentrator (11) is in the shape of a truncated cone with a smaller top and a larger bottom, and protrudes from the upper end surface of the thick-walled member (1). The upper end of the concentrator (11) has a circular groove (111), and the bottom surface of the circular groove (111) is configured as a spherical convex surface (112).

4. The high-efficiency and high-uniformity light-collecting and light-splitting structure according to claim 3, characterized in that: The circular groove (111) is cylindrical in shape and is larger at the top and smaller at the bottom.

5. The high-efficiency and high-uniformity light-collecting and light-splitting structure according to claim 2, characterized in that: The first and second light-splitting total reflection surfaces are in contact with each other at a right angle; the second and third light-splitting total reflection surfaces are in contact with each other at a right angle; the third and fourth light-splitting total reflection surfaces are in contact with each other at a right angle.

6. The high-efficiency and high-uniformity light-collecting and light-splitting structure according to claim 5, characterized in that: The lower ends of the fifth and sixth light-splitting total reflection surfaces are in contact with each other, and the angle between them is a right angle.

7. The high-efficiency and high-uniformity light-collecting and light-splitting structure according to any one of claims 1 to 6, characterized in that: There are multiple concentrators (11), which are distributed in a straight line at intervals on the upper end surface of the thick-walled component (1), and each concentrator is equipped with a W-shaped light-splitting total reflection structure (13) and a V-shaped light-splitting total reflection structure (14).

8. The high-efficiency and high-uniformity light-collecting and light-splitting structure according to any one of claims 1 to 6, characterized in that: The thick-walled part (1) is in the shape of a flat plate.

9. The high-efficiency and high-uniformity light-collecting and light-splitting structure according to any one of claims 1 to 6, characterized in that: The optical pattern (12) comprises a plurality of convex arc surfaces distributed in a matrix.

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