Detachable optical structure
By adopting a disassembled optical structure in the car light, the first and second optical elements with spacing restriction are used to collimate and reflect light, and the problems of low power consumption, high light output efficiency and uniform lighting are solved, and efficient and uniform lighting effects are achieved.
Patent Information
- Application Number
- CN202422074849.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The existing optical structure is not compatible with the needs of low power consumption, high light output efficiency and uniform lighting, especially when the opening size of the headlights is small.
Adopting a disassembled optical structure, including a PCB, a first optical element and a second optical element, by limiting the spacing between the first optical element and the second optical element between 0-50 mm, the collimation and reflection of LED light is achieved, and the light output efficiency is improved and the lighting is ensured uniform.
When the LED power does not increase, the light output efficiency and lighting uniformity of the headlights are improved, and the need for small opening sizes of the headlights is met.
Smart Images
Figure CN222925355U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automotive lamps, in particular to a detachable optical structure. Background Art
[0002] With the rapid development of the automotive field, consumers have higher and higher requirements for the fashion and aesthetics of the vehicle body shape. In recent years, the main engine factories have more and more stringent requirements for the opening size of signal lights, and hope to meet the requirements of vehicle lamp regulations with as small a window as possible. At present, in conventional design methods (such as: condenser type, reflector type), a small opening of the shaping surface will lead to a decrease in optical efficiency and uneven lighting effects. If you want to meet the requirements using conventional design methods, you can only achieve this by replacing high-power LEDs. Such an operation will increase the cost of the entire optical structure. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is: In order to solve the technical problem that the existing optical structure cannot be compatible with low power consumption of LEDs, high light output efficiency and uniform lighting, the utility model provides a detachable optical structure. Through the improvement of the optical structure, it is possible to improve the light output efficiency and ensure uniform lighting of the vehicle lamp on the basis of not increasing the LED power.
[0004] The technical solution adopted by the utility model to solve its technical problems is: A detachable optical structure, including: a PCB, a first optical element and a second optical element. A plurality of LEDs are arranged on one side of the PCB. The first optical element is located on the side of the PCB close to the LEDs, and the first optical element is connected to the PCB. The first optical element is used to collimate the light diffused by the LEDs. The second optical element is located on the side of the first optical element away from the PCB. The second optical element is used to reflect the light collimated by the first optical element; wherein: the distance between the first optical element and the second optical element is d, and 0 < d ≤ 50 mm.
[0005] Thus, by limiting the distance d between the first optical element and the second optical element to between 0 and 50 mm, after the first optical element receives the light from the LEDs and collimates it, more collimated light can enter the second optical element, which can improve the light output efficiency and ensure uniform lighting of the vehicle lamp on the basis of not increasing the LED power, and can meet the requirement of a small opening size of the vehicle lamp.
[0006] Further, the first optical element is a hyperbolic lens or a plano-curved lens. Thus, the light emitted by the LEDs can be collimated, and the energy distribution of the collimated light is relatively uniform, without sudden changes or dark areas, thereby improving the uniformity of the lighting of the entire lamp.
[0007] Further, the curved surface radius of the first optical element is r, where 0 < r ≤ 50 mm.
[0008] Further, the center of the LED coincides with the focus of the first optical element.
[0009] Further, the side of the first optical element close to the PCB is the first optical surface, and the side of the first optical element close to the second optical element is the second optical surface.
[0010] Further, the side of the second optical element close to the first optical element is the third optical surface, and the side of the second optical element away from the first optical element is the fourth optical surface.
[0011] Further, the third optical surface is provided with diffusion patterns. Thus, the uniformity of the lighting of the vehicle lamp at various viewing angles can be improved.
[0012] Further, the direction of the diffusion patterns on the third optical surface is any one of the up-down direction, the left-right direction, and the up-down and left-right direction.
[0013] Further, the fourth optical surface is provided with diffusion patterns. Thus, the uniformity of the lighting of the vehicle lamp at various viewing angles can be improved.
[0014] Further, the direction of the diffusion patterns on the fourth optical surface is any one of the up-down direction, the left-right direction, and the up-down and left-right direction.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] By limiting the distance d between the first optical element and the second optical element to be between 0 - 50 mm, after the first optical element receives the light from the LED and collimates it, more collimated light can enter the second optical element. On the basis of not increasing the LED power, the light output efficiency can be improved, the lighting of the vehicle lamp can be ensured to be uniform, and the requirement for the small opening size of the vehicle lamp can be met. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present utility model will be further described below with reference to the drawings and embodiments.
[0018] Figure 1 is a schematic structural diagram of the disassembled optical structure of the present utility model;
[0019] Figure 2 is a schematic structural diagram of the first optical element of the present utility model;
[0020] Figure 3 is a cross-sectional view of the first optical element of the present utility model;
[0021] Figure 4 Schematic diagram of the structure of the second optical element of the present utility model;
[0022] Figure 5 Optical path diagram of the detachable optical structure of the present utility model.
[0023] In the figure: 1, PCB; 101, LED; 2, the first optical element; 201, the first optical surface; 202, the second optical surface; 3, the second optical element; 301, the third optical surface; 302, the fourth optical surface. Detailed implementation manners
[0024] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic way, so they only show the components related to the present utility model.
[0025] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0026] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0027] Such as Figures 1 to 5As shown, it is the optimal embodiment of the present utility model. The detachable optical structure of this embodiment includes: a PCB 1, a first optical element 2, and a second optical element 3. A plurality of LEDs 101 are arranged on one side of the PCB 1. The first optical element 2 is located on the side of the PCB 1 close to the LEDs 101 and is connected to the PCB 1. The first optical element 2 is used to collimate the light diffused by the LEDs 101. The second optical element 3 is located on the side of the first optical element 2 away from the PCB 1, and the second optical element 3 is used to reflect the light collimated by the first optical element 2; wherein: the distance between the first optical element 2 and the second optical element 3 is d, and 0 < d ≤ 50 mm. Thus, by restricting the distance d between the first optical element 2 and the second optical element 3 to be between 0 and 50 mm, after the first optical element 2 receives the light from the LEDs 101 and collimates it, more collimated light can enter the second optical element 3. On the basis of not increasing the power of the LEDs 101, the light output efficiency can be improved, the headlight lighting can be ensured to be uniform, and the requirement of a small headlight opening size can be met.
[0028] Specifically, the range of d is (0, 50 mm]. d > 0 because there must be a distance between the first optical element 2 and the second optical element 3. d ≤ 50 mm is the maximum value set according to the conventional size of the headlight. The smaller d is, the more light the second optical element 3 receives from the first optical element 2, and the higher the light output efficiency of the entire optical structure. The light emitted by the first optical element 2 is ideally collimated light parallel to the light output direction, but in reality, it has a slightly divergent angle. Therefore, the smaller the distance d between the first optical element 2 and the second optical element 3, the more light the second optical element 3 can receive, and the higher the light output efficiency of the entire optical structure. However, the larger the distance d between the first optical element 2 and the second optical element 3, the more uniform the headlight lighting will be. Therefore, the distance d between the first optical element 2 and the second optical element 3 is set to be (0, 50 mm].
[0029] Specifically, the detachable optical structure means that there is a distance d between the first optical element 2 and the second optical element 3, rather than in a contacting state.
[0030] Specifically, the smaller the distance d between the first optical element 2 and the second optical element 3, the more light can enter the second optical element 3. In this way, the light output efficiency of the entire optical structure can be improved.
[0031] In this embodiment, the first optical element 2 is a hyperbolic lens or a plano-convex lens; the side of the first optical element 2 close to the PCB 1 is the first optical surface 201, and the side of the first optical element 2 close to the second optical element 3 is the second optical surface 202; the curvature radius of the first optical element 2 is r; where: 0 < r ≤ 50 mm. Thus, the light diffused by the LED 101 can be collimated, and the energy distribution of the collimated light is relatively uniform, without sudden changes or dark areas, thereby improving the uniformity of the whole lamp lighting.
[0032] Specifically, as Figure 3 shown, the optical axis of the first optical element 2 corresponds to the light output direction, and its purpose is: the light is collimated and then emitted along the required direction.
[0033] Specifically, the first optical element 2 is preferably PMMA (polymethyl methacrylate), and the reason is: PMMA has a low refractive index, and the light emitted by the LED 101 is deflected by a small angle after entering the first optical element 2, and it is not easy to have a dispersion phenomenon and is light in weight. The first optical element 2 can also be made of glass or PC (polycarbonate).
[0034] In this embodiment, the center of the LED 101 coincides with the focus of the first optical element 2. Specifically, the optimal setting method is: the center of the LED 101 coincides with the focus of the first optical element 2, and the center of the LED 101 can also deviate from the focus of the first optical element 2 according to requirements.
[0035] In this embodiment, the side of the second optical element 3 close to the first optical element 2 is the third optical surface 301, and the side of the second optical element 3 away from the first optical element 2 is the fourth optical surface 302; the third optical surface 301 is provided with a diffusion pattern, and the direction of the diffusion pattern on the third optical surface 301 is any one of the up-down direction, the left-right direction, and the up-down and left-right direction; the fourth optical surface 302 is provided with a diffusion pattern, and the direction of the diffusion pattern on the fourth optical surface 302 is any one of the up-down direction, the left-right direction, and the up-down and left-right direction. Thus, the diffusion pattern can improve the lighting uniformity of the vehicle lamp at various viewing angles.
[0036] Specifically, the up-down and left-right direction diffusion pattern means: the diffusion pattern formed by superimposing the up-down direction diffusion pattern and the left-right direction diffusion pattern.
[0037] For example, the diffusion pattern on the fourth optical surface 302 adopts a corn kernel pattern.
[0038] Specifically, according to requirements, the third optical surface 301 of the second optical element 3 can also not be provided with a diffusion pattern.
[0039] The light output process of the present utility model is as follows: First, after the light passes through the diffusion of LED101, it enters the first optical element 2 through the first optical surface 201; then, after the light is collimated by the first optical element 2, it is emitted in a collimated direction through the second optical surface 202; then, the light contacts the third optical surface 301 after passing through the air between the first optical element 2 and the second optical element 3 (since there is a distance d between the first optical element 2 and the second optical element 3, there is air between the first optical element 2 and the second optical element 3), and after being diffused by the diffusion pattern of the third optical surface 301, it enters the second optical element 3 (if the third optical surface 301 of the second optical element 3 does not have a diffusion pattern, it directly enters the second optical element 3 through the third optical surface 301); finally, after multiple reflections by the second optical element 3, it contacts the fourth optical surface 302, and after being diffusely reflected for the second time by the corn kernel pattern, the light is emitted from the fourth optical surface 302.
[0040] In summary, the present utility model limits the distance d between the first optical element 2 and the second optical element 3 to between 0 and 50 mm. After the first optical element 2 receives the light from the LED101 and collimates it, more collimated light can enter the second optical element 3. On the basis of not increasing the power of the LED101, the light output efficiency can be improved, the lighting of the vehicle lamp can be ensured to be uniform, and the requirement of the small opening size of the vehicle lamp can be met.
[0041] Based on the ideal embodiments of the present utility model as the inspiration, through the above description, relevant staff can make various changes and modifications completely within the scope of not deviating from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A disassembled optical structure, characterized in that: include: A PCB (1), wherein a plurality of LEDs (101) are arranged on one side of the PCB (1); a first optical element (2), the first optical element (2) being located on a side of the PCB (1) close to the LED (101), and the first optical element (2) being connected to the PCB (1), and the first optical element (2) being used to collimate light diffused by the LED (101); a second optical element (3), the second optical element (3) being located on a side of the first optical element (2) away from the PCB (1), the second optical element (3) being used to reflect light that has been collimated by the first optical element (2); Wherein: the distance between the first optical element (2) and the second optical element (3) is d, 0<d≤50mm.
2. The detachable optical structure according to claim 1, characterized in that: The first optical element (2) is a hyperbolic lens or a plano-curved lens.
3. The detachable optical structure according to claim 1, characterized in that: The radius of curvature of the first optical element (2) is r; Among them: 0<r≤50mm.
4. The detachable optical structure according to claim 1, characterized in that: The center of the LED (101) coincides with the focus of the first optical element (2).
5. The detachable optical structure according to claim 1, characterized in that: The side surface of the first optical element (2) close to the PCB (1) is a first optical surface (201), and the side surface of the first optical element (2) close to the second optical element (3) is a second optical surface (202).
6. The detachable optical structure according to claim 1, characterized in that: The side surface of the second optical element (3) close to the first optical element (2) is a third optical surface (301), and the side surface of the second optical element (3) away from the first optical element (2) is a fourth optical surface (302).
7. The detachable optical structure according to claim 6, characterized in that: The third optical surface (301) is provided with a diffusion pattern.
8. The detachable optical structure according to claim 7, characterized in that: The direction of the diffusion pattern of the third optical surface (301) is any one of the three directions: up and down, left and right, and up and down, left and right.
9. The detachable optical structure according to claim 6, characterized in that: The fourth optical surface (302) is provided with a diffusion pattern.
10. The detachable optical structure according to claim 9, characterized in that: The direction of the diffusion pattern of the fourth optical surface (302) is any one of the three directions: up and down, left and right, and up and down and left and right.