Total reflection system and vehicle lamp
Through the multiple total reflection design of the total reflection system, the problem of lighting uniformity caused by the tilt of the headlight shape is solved, the light utilization rate and light emission uniformity are improved, and it can adapt to headlight shapes with different tilt degrees.
Patent Information
- Application Number
- CN202521223906.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-16
- Publication Date
- 2026-04-10
- Estimated Expiration
- 2035-06-16
AI Technical Summary
The existing headlights have a tilted design, resulting in a large difference in height between the front and rear, large steps on the side walls, and poor uniformity of illumination.
A total reflection system is adopted, including a first total reflection surface and a second total reflection surface with an included angle of 90°±10°, forming a total reflection unit. Multiple total reflection units are arranged sequentially along the conformal trend line. After the incident light enters through the light incident structure, it is ensured that the light is emitted uniformly through multiple total reflection designs.
It improves light utilization, enhances lighting effects, significantly improves the uniformity of headlight illumination, adapts to headlight shapes with different tilt angles, and avoids the problem of light not reflecting properly due to headlight tilt, thus affecting the uniformity of light output.
Smart Images
Figure CN224108049U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to car light technical field especially relates to a full reflection system and car light. BACKGROUND
[0002] With the rapid development of car light technology, the consumer's requirement to car light lighting effect is also increasing day by day.Under this background, the current car light modeling increasingly tends to be inclined design.The existing optical surface usually adopts the stepped structure arranged in front and back, and specifically can refer to Figure 1 , two adjacent optical surfaces are connected through a connecting surface, after the incident light enters the optical surface, the reflection of the optical surface, and finally emits from the light emitting surface.
[0003] However, when the inclination degree of car light modeling increases, the area of connecting surface will also increase accordingly.At this time, a part of light will irradiate on the connecting surface, which makes the light energy irradiated on the connecting surface region and the optical surface region different, and further causes the whole car light lighting uniformity to be poor, and presents the lighting effect of one bright and one dark. INVENTION CONTENTS
[0004] The technical problem to be solved by the utility model is: in order to solve the technical problem that the front and back difference is big, the sidewall step is big, and the lighting uniformity is poor due to the inclined car light modeling in the prior art, the utility model provides a full reflection system and car light, so that the light emission is uniform.
[0005] The technical scheme adopted by the utility model to solve the technical problem is: a full reflection system, wherein, including: first full reflection surface and second full reflection surface, one end of the first full reflection surface and one end of the second full reflection surface are connected with each other, and the included angle between the first full reflection surface and the second full reflection surface is 90°±10°,
[0006] The first full reflection surface and the second full reflection surface constitute a full reflection unit, a plurality of full reflection units are arranged in turn along the shape tendency line, the other end of the first full reflection surface and the other end of the second full reflection surface are arranged on the shape tendency line, the lower side of the full reflection unit is provided with a light entering structure, the incident light is incident through the light entering structure and hits on the full reflection unit, and the incident light is emitted after full reflection of the full reflection unit.
[0007] Specific technical effects are: each total reflection unit is composed of a first total reflection surface and a second total reflection surface, when the incident light enters the system, there are two main reflection paths, one is that the incident light first irradiates on the first total reflection surface, and then hits the second total reflection surface after total reflection, and then exits after total reflection of the second total reflection surface; the other is that the incident light first irradiates on the second total reflection surface, and then hits the first total reflection surface after total reflection, and then exits after total reflection of the first total reflection surface, through the design of multiple total reflections, the incident light can be fully utilized, the light utilization rate is effectively improved, and the overall efficiency of the system is improved, meanwhile, the light is more uniform after multiple total reflections, and the illumination effect is improved; the multiple total reflection units are arranged along the shape trend line in sequence, so that the total reflection system can well adapt to the vehicle lamp models with different inclination degrees, the design of the connecting surface of the traditional scheme is cancelled, even if the inclination degree of the vehicle lamp model is large, the incident light can also be fully hit on the total reflection unit, and then exit after multiple total reflections between the first total reflection surface and the second total reflection surface, this design effectively avoids the problem that part of the light cannot be normally reflected due to the inclination of the vehicle lamp, thereby affecting the light uniformity, so that the lightening uniformity of the whole vehicle lamp is significantly improved.
[0008] Further, a projection of the first total reflection surface on a horizontal plane is a straight line AB, a projection of the second total reflection surface on the horizontal plane is a straight line AC, the straight line AB intersects the straight line AC at point A, the straight line AB intersects the shape trend line at point B, the straight line AC intersects the shape trend line at point C, point B and point C are connected to form a straight line BC, the straight line BC, the straight line AB and the straight line AC form a triangle ABC, a midpoint of the straight line BC is set as point O, the point A, the point B and the point C are all arranged on a circumcircle of the triangle ABC, and the point O is located at or near the center of the circumcircle.
[0009] Further, when the point O is arranged at the center of the circumcircle, the triangle ABC is a right triangle, and an included angle between the first total reflection surface and the second total reflection surface is 90°.
[0010] Further, a projection of the straight line AB on a horizontal line is L1, a projection of the straight line AC on the horizontal line is L2, and L1=L2.
[0011] Further, an intersection line of the first total reflection surface and the second total reflection surface is a guide line, the straight line AB is swept along the guide line to form the first total reflection surface, and the straight line AC is swept along the guide line to form the second total reflection surface, the guide line is a straight line or a curve.
[0012] Further, when the guide line is a straight line, an included angle between the guide line and a horizontal plane is α.
[0013] Further, the first total reflection surface and the second total reflection surface are provided with a light distribution pattern or a skin pattern.
[0014] Further, the total reflection system further comprises a light guide structure, one end of the light guide structure is provided with an light exit surface, the light entrance structure is arranged at the other end of the light guide structure, and a plurality of total reflection units are arranged at the other end of the light guide structure along a contour trend line in sequence.
[0015] Further, the light entrance structure is a light collector.
[0016] A vehicle lamp, wherein the vehicle lamp comprises a total reflection system as described in any one of the preceding embodiments.
[0017] Compared with the prior art, the total reflection system has the following beneficial effects:
[0018] (1) Each total reflection unit is composed of a first total reflection surface and a second total reflection surface. Through the design of multiple total reflections, the incident light can be fully utilized, the utilization rate of light is effectively improved, and the overall efficiency of the system is improved. At the same time, after multiple total reflections, the light is more uniform, and the illumination effect is improved.
[0019] (2) The plurality of total reflection units are arranged along a contour trend line in sequence. The design of the connecting surface of the traditional scheme is cancelled. The total reflection system can well adapt to different degrees of inclination of the vehicle lamp shape. Even if the inclination degree of the vehicle lamp shape is large, the incident light can be fully reflected on the total reflection unit and exit after multiple total reflections between the first total reflection surface and the second total reflection surface. This design effectively avoids the problem that part of the light cannot be normally reflected due to the inclination of the vehicle lamp, thereby improving the lighting uniformity of the entire vehicle lamp. BRIEF DESCRIPTION OF DRAWINGS
[0020] The utility model will be further described below in combination with the drawings and embodiments.
[0021] Figure 1 It is a structural schematic view of an optical element of the prior art;
[0022] Figure 2 It is a structural schematic view of a total reflection system of the utility model;
[0023] Figure 3 It is a structural schematic view of another view of a total reflection system of the utility model;
[0024] Figure 4 It isFigure 2 The main view;
[0025] Figure 5 for Figure 2 Rear view;
[0026] Figure 6 This is a schematic diagram of the total reflection unit of this utility model;
[0027] Figure 7 for Figure 6 A schematic diagram of the projection onto the horizontal plane;
[0028] Figure 8 for Figure 6 A structural diagram from another perspective.
[0029] In the diagram: 1. Total internal reflection system; 2. Total internal reflection unit; 3. First total internal reflection surface; 4. Second total internal reflection surface; 5. Follow-up trend line; 6. Guide line; 7. Light guide structure; 8. Light emitting surface; 9. Light emitting structure. Detailed Implementation
[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] As Figures 2 to 8 shown, it is preferred embodiment 1 of the utility model, a total reflection system 1 of this embodiment includes: first total reflection surface 3 and second total reflection surface 4, one end of first total reflection surface 3 and one end of second total reflection surface 4 are connected with each other, and the included angle between first total reflection surface 3 and second total reflection surface 4 is 90 ° ± 10 °, first total reflection surface 3 and second total reflection surface 4 constitute a total reflection unit 2, multiple total reflection units 2 are sequentially arranged along the shape trend line 5, and the other end of first total reflection surface 3 and the other end of second total reflection surface 4 are both arranged on the shape trend line 5.Total reflection system 1 further includes: light guide structure 7, one end of light guide structure 7 has light exit surface 8, the other end of light guide structure 7 is provided with light entrance structure 9, multiple total reflection units 2 are sequentially arranged along the shape trend line 5 and arranged at the other end of light guide structure 7, incident light is incident after light entrance structure 9 and hits on total reflection unit 2, and is emitted from light exit surface 8 after total reflection unit 2 total reflection.
[0034] Therefore: by designing the included angle between first total reflection surface 3 and second total reflection surface 4 as 90 ° ± 10 °, the light less than the critical angle in total reflection system 1 can be emitted from light exit surface 8 after multiple total reflections, when incident light enters the system, there are two main reflection paths, one is that incident light is first irradiated on first total reflection surface 3, hits on second total reflection surface 4 after total reflection, and then is emitted after total reflection of second total reflection surface 4; the other is that incident light is first irradiated on second total reflection surface 4, hits on first total reflection surface 3 after total reflection, and then is emitted after total reflection of first total reflection surface 3, through this multiple total reflection design, incident light can be fully utilized by the system, effectively improving the utilization rate of light, and further improving the overall efficiency of the system, meanwhile, light is emitted more uniformly after multiple total reflections, improving the lighting effect; by sequentially arranging multiple total reflection units 2 along the shape trend line 5, the total reflection system 1 can well adapt to different degrees of inclination of the car lamp shape, the design of the connecting surface of the traditional scheme is cancelled, the degree of inclination of the car lamp shape is larger, and incident light can also be fully hit on total reflection unit 2 and emitted after multiple total reflections between first total reflection surface 3 and second total reflection surface 4, this design effectively avoids the problem that part of light cannot be normally reflected due to the inclination of the car lamp, thereby significantly improving the lighting uniformity of the entire car lamp.
[0035] Specifically, as Figure 2 shown, the size of each total reflection unit 2 can be the same or different, and is specifically designed according to the shape structure of the other end of light guide structure 7.
[0036] In a preferred embodiment, the projection of the first total reflection surface 3 on the horizontal plane is a straight line AB, the projection of the second total reflection surface 4 on the horizontal plane is a straight line AC, the straight line AB intersects the straight line AC at point A, the straight line AB intersects the contour line 5 at point B, the straight line AC intersects the contour line 5 at point C, the straight line BC is formed by connecting the point B and the point C, the straight line BC, the straight line AB and the straight line AC form a triangle ABC, the midpoint of the straight line BC is set as point O, the point A, the point B and the point C are all arranged on the circumcircle of the triangle ABC, and the point O is located at or near the center of the circumcircle.
[0037] In a preferred embodiment, when the point O is arranged at the center of the circumcircle, the triangle ABC is a right triangle, and the angle between the first total reflection surface 3 and the second total reflection surface 4 is 90°.
[0038] Specifically, the straight line OA is formed by connecting the point O and the point A, the angle β1 is formed between the straight line OA and the straight line AB, and the angle β2 is formed between the straight line OA and the straight line AC, and β1+β2=90°.
[0039] Specifically, the angles of β1 or β2 can be designed according to actual production needs, so as to adjust the inclination direction of the first total reflection surface 3 and the second total reflection surface 4, for example, when β1 is 30°, β2 is 60°, β1 and β2 are both 45°, or when β1 is 10°, β2 is 80°, and the like.
[0040] In a preferred embodiment, the projection of the straight line AB on the horizontal line is L1, the projection of the straight line AC on the horizontal line is L2, and L1=L2. Thus, the light efficiency is maximized.
[0041] In a preferred embodiment, the intersection line of the first total reflection surface 3 and the second total reflection surface 4 is the guide line 6, the straight line AB sweeps along the guide line 6 to form the first total reflection surface 3, the straight line AC sweeps along the guide line 6 to form the second total reflection surface 4, and the guide line 6 is a straight line or a curve.
[0042] In a preferred embodiment, when the guide line 6 is a straight line, the angle α is formed between the guide line 6 and the horizontal plane. Specifically, the angle α can be 90 degrees or 45 degrees, and the like.
[0043] In a preferred embodiment, the first total reflection surface 3 and the second total reflection surface 4 are both provided with a light distribution pattern or a skin pattern.
[0044] In a preferred embodiment, the light entrance structure 9 is a condenser.
[0045] Specifically, the incident light is emitted by the LED light source directly through the light entrance structure 9 and then hits the total reflection unit 2, and is emitted from the light exit surface 8 after total reflection by the total reflection unit 2; or, the incident light is emitted by the LED light source through a series of refraction, reflection or total reflection of optical structures, and then enters the light entrance structure 9, and then hits the total reflection unit 2, and is emitted from the light exit surface 8 after total reflection by the total reflection unit 2.
[0046] Embodiment 2:
[0047] A vehicle lamp comprising the total reflection system 1 described in Embodiment 1.
[0048] Compared with the prior art, the present application has the following beneficial effects:
[0049] (1) Each total reflection unit 2 is composed of a first total reflection surface 3 and a second total reflection surface 4. Through this multiple total reflection design, the incident light can be fully utilized, effectively improving the utilization rate of light and the overall efficiency of the system. At the same time, after multiple total reflections, the light is more uniform, improving the lighting effect.
[0050] (2) The multiple total reflection units 2 are arranged along the contour trend line 5, so that the total reflection system 1 can well adapt to vehicle lamp models with different degrees of inclination. The design of the connecting surface of the traditional scheme is cancelled. When the inclination of the vehicle lamp model is large, the incident light can also be fully hit on the total reflection unit 2 and emitted after multiple total reflections between the first total reflection surface 3 and the second total reflection surface 4. This design effectively avoids the problem that part of the light cannot be normally reflected due to the inclination of the vehicle lamp, thereby significantly improving the lighting uniformity of the entire vehicle lamp.
[0051] The above describes the ideal embodiment of the present application, and through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined by the scope of the claims.
Claims
1. A total reflection system characterized by comprising: The application relates to a total reflection system. The total reflection system comprises a first total reflection surface (3) and a second total reflection surface (4), one end of the first total reflection surface (3) is connected with one end of the second total reflection surface (4), and the included angle between the first total reflection surface (3) and the second total reflection surface (4) is 90 DEG +10 DEG, The first total reflection surface (3) and the second total reflection surface (4) form a total reflection unit (2), a plurality of total reflection units (2) are arranged along a shape following trend line (5) in sequence, and the other end of the first total reflection surface (3) and the other end of the second total reflection surface (4) are arranged on the shape following trend line (5), and an incident light structure (9) is arranged below the total reflection unit (2), incident light is incident on the total reflection unit (2) through the incident light structure (9), and the incident light is totally reflected by the total reflection unit (2) and then is emitted.
2. A total reflection system as claimed in claim 1, characterized in that The projection of the first total reflection surface (3) on a horizontal plane is a straight line AB, the projection of the second total reflection surface (4) on the horizontal plane is a straight line AC, the straight line AB intersects with the straight line AC at point A, the straight line AB intersects with the shape following trend line (5) at point B, the straight line AC intersects with the shape following trend line (5) at point C, point B and point C are connected to form a straight line BC, the straight line BC, the straight line AB and the straight line AC form a triangle ABC, the midpoint of the straight line BC is set as point O, the point A, the point B and the point C are arranged on the circumcircle of the triangle ABC, and the point O is located on the center of the circumcircle or near the center of the circumcircle.
3. A total reflection system as claimed in claim 2, characterized in that The point O is arranged at the center of the circumcircle, the triangle ABC is a right-angled triangle, and the included angle between the first total reflection surface (3) and the second total reflection surface (4) is 90 DEG.
4. A total reflection system as claimed in claim 2, characterized in that The projection of the straight line AB on a horizontal line is L1, the projection of the straight line AC on the horizontal line is L2, and L1=L2.
5. A total reflection system as claimed in claim 2, characterized in that The intersection line of the first total reflection surface (3) and the second total reflection surface (4) is a guide line (6), the straight line AB is swept along the guide line (6) to form the first total reflection surface (3), the straight line AC is swept along the guide line (6) to form the second total reflection surface (4), and the guide line (6) is a straight line or a curve.
6. A total reflection system as claimed in claim 5, characterized in that When the guide line (6) is a straight line, an included angle alpha is formed between the guide line (6) and a horizontal plane.
7. A total reflection system as claimed in claim 1, characterized in that The first total reflection surface (3) and the second total reflection surface (4) are provided with light distribution patterns or skin patterns.
8. A total reflection system as claimed in claim 1, characterized in that The total reflection system further comprises a light guide structure (7), one end of the light guide structure (7) is provided with an emitting surface (8), the incident light structure (9) is arranged at the other end of the light guide structure (7), a plurality of total reflection units (2) are arranged at the other end of the light guide structure (7) along the shape following trend line (5) in sequence, incident light is incident on the total reflection unit (2) through the incident light structure (9), and the incident light is totally reflected by the total reflection unit (2) and then is emitted from the emitting surface (8).
9. A total reflection system as claimed in claim 1, characterized in that The incident light structure (9) is a condenser.
10. A vehicle lamp characterized by The application further relates to a total reflection system comprising the total reflection system as claimed in any one of claims 1 to 9. The application further relates to a total reflection system comprising the total reflection system as claimed in any one of claims 1 to 9.