Optical system for thick-walled parts eliminating the dark zone of the side walls and vehicle signal light

Abstract

The application provides a thick-wall piece optical system for eliminating a side wall dark area and a vehicle signal lamp, which comprises a PCB, a thick-wall piece and a plurality of LED light sources, the plurality of LED light sources are sequentially and spacedly arranged on the PCB, a total reflection surface of the thick-wall piece is a total reflection pattern surface, total reflection patterns are arranged in an array on the total reflection pattern surface, the total reflection pattern surface is sequentially divided into a plurality of total reflection areas along the arrangement direction of the LED light sources, the total reflection patterns between adjacent reflection areas are continuously arranged, and each total reflection area is used for totally reflecting incident light emitted by a corresponding LED light source; the incident light is totally reflected through the total reflection patterns to form total reflection light, and the total reflection light is emitted through an emitting surface of the thick-wall piece. The application has the advantages that the total reflection pattern surface is divided into continuous total reflection areas corresponding to different LED light sources, the whole total reflection surface is evenly lighted at multiple angles, the problem of the dark area caused by the side wall when being lighted is solved, the whole emitting surface is evenly lighted, and the efficiency is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile optical systems, in particular to a thick-wall optical system for eliminating dark areas of side walls and a vehicle signal lamp. BACKGROUND

[0002] With the increasing aesthetic demands of consumers and vehicle manufacturers, the appearance, overall compactness and light-emitting area of vehicle lamps are increasingly valued by vehicle manufacturers, on the premise that the designed vehicle lamps meet the regulations. For example, with the development of the market, more and more customers hope to achieve a more uniform lighting effect. Therefore, the thick-wall light guide structure with a more uniform optical system lighting effect has become a research hotspot.

[0003] As shown in Figure 1 Most of the prior art utilizes thick-wall components to achieve lighting. The total reflection surface of the thick-wall component is provided with side walls. When the thick-wall component is observed at a large angle, obvious light and dark areas can be seen, and the entire light-emitting surface cannot be uniformly lit. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide a thick-wall optical system for eliminating dark areas of side walls and a vehicle signal lamp.

[0005] The thick-wall optical system for eliminating dark areas of side walls provided by the present application comprises a PCB, a thick-wall component and a plurality of LED light sources. The plurality of LED light sources are sequentially arranged on the PCB and correspondingly arranged on one side of the light-incident surface of the thick-wall component.

[0006] The light emitted by the LED light source is refracted through the light-incident surface to form incident light. The total reflection surface of the thick-wall component is a total reflection pattern surface. The total reflection pattern surface is provided with a total reflection pattern in an array. The total reflection pattern corresponds to the incident light.

[0007] The total reflection pattern surface is sequentially divided into a plurality of total reflection areas along the arrangement direction of the LED light source. The total reflection patterns between adjacent total reflection areas are continuously arranged. Each total reflection area is used for totally reflecting the incident light emitted by the corresponding LED light source.

[0008] The incident light is totally reflected through the total reflection pattern to form totally reflected light. The totally reflected light is emitted through the light-emitting surface of the thick-wall component.

[0009] Preferably, the base surface of the total reflection pattern surface is a smooth curved surface. The total reflection pattern is arranged in an array on the base surface.

[0010] Preferably, the light-emitting surface of the thick-wall component is a light-emitting pattern surface. The light-emitting pattern surface is provided with optical teeth for diffusing the emitted light.

[0011] Preferably, the total reflection pattern surface is rectangular in projection parallel to the direction of the emergent light rays.

[0012] The plurality of total reflection patterns on the total reflection pattern surface are all the same in area in projection parallel to the direction of the emergent light rays, and are arranged in sequence along the length and width of the rectangular total reflection pattern surface.

[0013] Preferably, the plurality of LED light sources are arranged in sequence along the length of the rectangular total reflection pattern surface in projection parallel to the direction of the emergent light rays.

[0014] Preferably, the distance between adjacent LED light sources is the same in projection parallel to the direction of the emergent light rays, and the rectangular total reflection pattern surface is divided into a plurality of rectangular total reflection regions that are continuous in sequence and the same in shape.

[0015] The rectangular total reflection regions are arranged in one-to-one correspondence with the LED light sources.

[0016] Preferably, the light rays emitted by the LED light sources form a plurality of refracted light rays that are different in angle and are all within a preset angle range after refraction by the light-incident surface.

[0017] When the plurality of refracted light rays that are different in angle are incident on the corresponding total reflection regions, they are respectively reflected by all the total reflection patterns in the corresponding total reflection regions, forming a plurality of mutually parallel total reflection light rays, which are refracted by the light-emergent surface and then emerge into the air, for realizing the lighting of a unit lighting range.

[0018] The unit lighting ranges of the plurality of LED light sources are arranged in sequence to form a preset lighting range, and the edges of the preset lighting range are continuous and smooth.

[0019] The automobile signal lamp provided by the application adopts the thick-wall optical system for eliminating the dark area of the side wall.

[0020] Compared with the prior art, the application has the following beneficial effects:

[0021] The application has a simple structure, and the total reflection pattern surface provided with the total reflection patterns is divided into continuous total reflection regions that respectively correspond to different LED light sources, so that the entire total reflection surface can be evenly lighted at multiple angles, the lighting uniformity is significantly improved, the problem of the dark area caused by the lighting of the side wall is solved, and the entire light-emergent surface can be evenly lighted while ensuring the efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, with reference to the attached drawings:

[0023] Figure 1 Structure diagram of thick-wall part module with side wall in prior art;

[0024] Figure 2 Structure diagram of side view from one angle of the present application;

[0025] Figure 3 Structure diagram of bottom view from one angle of the present application;

[0026] Figure 4 Structure diagram of side view from side view angle of the present application;

[0027] Figure 5 Structure diagram of top view from one angle of the present application;

[0028] Figure 6 Structure diagram of front view from one angle of the present application;

[0029] Figure 7 Structure diagram of side view from another angle of the present application;

[0030] Figure 8 Structure diagram of side view from side view angle of thick-wall part in the present application;

[0031] Figure 9 Structure diagram of top view from one angle of thick-wall part in the present application;

[0032] Figure 10 Structure diagram of bottom view from one angle of thick-wall part in the present application;

[0033] Figure 11 Optical path diagram of the present application;

[0034] Figure 12 Corresponding relation diagram of pattern of total reflection surface and LED light source from bottom view in the present application;

[0035] Figure 13 Corresponding relation diagram of pattern of total reflection surface and LED light source from front view in the present application;

[0036] Figure 14 Structure diagram of front view from one angle of embodiment 1;

[0037] Figure 15 Structure diagram of side view from side view angle of thick-wall part in embodiment 1;

[0038] Figure 16 Structure diagram of top view from one angle of thick-wall part in embodiment 1;

[0039] Figure 17 Structure diagram of pattern of total reflection surface and first functional LED light source from front view in embodiment 1;

[0040] Figure 18 Structure diagram of the full reflection surface pattern and the first functional LED light source in the bottom view angle of Example 1;

[0041] Figure 19 Light path diagram of the first functional LED light source in Example 1;

[0042] Figure 20 Structure diagram of the full reflection surface pattern and the second functional LED light source in the front view angle of Example 1;

[0043] Figure 21 Structure diagram of the full reflection surface pattern and the second functional LED light source in the bottom view angle of Example 1;

[0044] Figure 22 Light path diagram of the second functional LED light source in Example 1.

[0045] The figure shows:

[0046] PCB board 1 light inlet surface 31

[0047] LED light source 2 full reflection pattern surface 32

[0048] Thick-walled part 3 light outlet pattern surface 33

[0049] First functional LED light source 21 first functional full reflection pattern 321

[0050] Second functional LED light source 22 second functional full reflection pattern 322 DETAILED DESCRIPTION

[0051] The application will be described in detail below with specific embodiments. The following examples will help those skilled in the art to further understand the application, but do not limit the application in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the application. These are within the scope of the present application.

[0052] The application discloses a thick-walled part optical system for eliminating dark areas of side walls and a vehicle signal lamp. By designing a pattern on the full reflection surface of a large base surface, the problem of dark areas caused by the side walls when lighting is solved, the entire full reflection surface can be evenly lit at multiple angles, the efficiency is ensured, and the effect of evenly lighting the entire light outlet surface is realized.

[0053] The optical system for eliminating the dark area of the side wall of the thick-walled part and the vehicle signal lamp provided by the application comprises a PCB board 1, a thick-walled part 3 and a plurality of LED light sources 2, the plurality of LED light sources 2 are sequentially arranged on the PCB board 1 and correspondingly arranged on one side of the light-incident surface 31 of the thick-walled part 3, the light emitted by the LED light source 2 is refracted through the light-incident surface 31 to form incident light,

[0054] The total reflection surface of the thick-walled part 3 is a total reflection pattern surface 32, the total reflection pattern surface 32 is arrayed with total reflection patterns, the total reflection patterns correspond to the incident light, the total reflection pattern surface 32 is sequentially divided into a plurality of total reflection areas along the arrangement direction of the LED light source 2, the total reflection patterns between adjacent total reflection areas are continuously arranged, and each total reflection area is used for totally reflecting the incident light emitted by the corresponding LED light source 2, the incident light is reflected through the total reflection patterns to form total reflection light, and the total reflection light is emitted through the light-emitting surface of the thick-walled part 3.

[0055] As shown in the drawing, Figures 8-10 The light-incident surface 31 of the thick-walled part, the total reflection pattern surface 32 of the thick-walled part and the light-emitting pattern surface 33 of the thick-walled part are optical surfaces designed on the thick-walled part 3. The base surface of the total reflection pattern surface 32 is a smooth large surface generated by stretching a curve similar to a parabola, and the total reflection optical patterns are designed corresponding to the LED light source 2.

[0056] The light emitted by the LED light source 2 is refracted through the light-incident surface 31 of the thick-walled part into the thick-walled part 3, propagates in the thick-walled part 3, and is totally reflected on the total reflection pattern surface 32 of the thick-walled part, the direction of the light after total reflection changes, the light is horizontally and parallelly irradiated on the light-emitting pattern surface 33 of the thick-walled part, and then is refracted into the air to light up the whole light-emitting pattern surface 33 of the thick-walled part. The patterns on the light-emitting pattern surface 33 of the thick-walled part are designed with a certain diffusion angle, which can make the diffused light meet the light distribution required by regulations, or can more uniformly light up the whole light-emitting pattern surface 33 of the thick-walled part. The light path schematic diagram is shown in the drawing, Figure 11 .

[0057] The base surface of the total reflection pattern surface 32 is a smooth curved surface, and the total reflection patterns are arrayed on the base surface. The light-emitting surface of the thick-walled part 3 is a light-emitting pattern surface 33, and the light-emitting pattern surface 33 is provided with optical teeth for diffusing the emitted light.

[0058] As shown in the drawing, Figure 13As shown, the total reflection pattern surface 32 is rectangular in the projection parallel to the direction of the outgoing light rays; the total reflection pattern surfaces on the total reflection pattern surface 32 are all the same in area in the projection parallel to the direction of the outgoing light rays, and are arranged in sequence along the length and width of the rectangular total reflection pattern surface 32. In the projection parallel to the direction of the outgoing light rays, the plurality of LED light sources 2 are arranged in sequence along the length of the rectangular total reflection pattern surface 32. In the projection parallel to the direction of the outgoing light rays, the distance between adjacent LED light sources 2 is the same, and the rectangular total reflection pattern surface 32 is divided into a plurality of rectangular reflection regions that are continuous and the same in shape; the rectangular reflection regions and the LED light sources 2 are arranged in one-to-one correspondence.

[0059] The light emitted by the LED light sources 2 is refracted by the light-incident surface 31 to form a plurality of refracted light rays that are different in angle and are all within a preset angle range; when the plurality of refracted light rays that are different in angle are incident on the corresponding reflection regions, they are respectively reflected by all the total reflection patterns in the corresponding reflection regions to form a plurality of mutually parallel outgoing light rays, and the plurality of mutually parallel outgoing light rays are used to realize the lighting of a unit lighting range after passing through the light- emitting surface; the unit lighting ranges of the plurality of LED light sources 2 are arranged in sequence to form a preset lighting range, and the edges of the preset lighting range are continuous and smooth.

[0060] In a preferred embodiment, the total reflection pattern surface 32 of the thick-walled member is designed based on a base surface that is stretched from a parabolic surface along the distribution trend of the LED light sources 2, and the total reflection patterns on the total reflection pattern surface 32 of the thick-walled member correspond to the LED light sources 2. By calculating the angle of the refracted light rays that are refracted by the light-incident surface 31 of the thick-walled member 3 into the thick-walled member 3 and the requirement that the reflected light rays become parallel light rays, the reflection patterns on the reflection surface 5 are designed. The correspondence between the reflection patterns and the LED light sources is as shown in Figures 12-13 The total reflection pattern surface 32 of the thick-walled member in the dashed box is designed for the light rays of the LED light sources 2 in the dashed box.

[0061] The total reflection pattern surface 32 of the thick-walled member in the dashed box is designed for the light rays of the LED light sources 2 in the dashed box.

[0062] Embodiment 1

[0063] The embodiment is based on the above scheme, and further divides the LED light source 2 into first LED light source 21 and second LED light source 22 with different functions, and further divides the full reflection pattern surface 32 into first full reflection pattern 321 and second full reflection pattern 322. The different full reflection patterns are staggered and arranged, and the LED light sources with different functions are optically designed, so that the light emitting surface can be efficiently and uniformly lit when the light sources with different functions emit light, and the technical problem that multiple light sources cannot uniformly and efficiently light the thick-walled part in a full reflection cavity is solved.

[0064] The light emitted by the first functional LED light source 21 is refracted through the light entrance surface 31 to form first incident light, and the light emitted by the second functional LED light source 22 is refracted through the light entrance surface 31 to form second incident light.

[0065] The first functional full reflection pattern 321 and the second functional full reflection pattern 322 are staggered on the full reflection pattern surface 32, and the first functional full reflection pattern 321 and the second functional full reflection pattern 322 correspond to the first incident light and the second incident light respectively. The first incident light and the second incident light are respectively totally reflected by the first functional full reflection pattern 321 and the second functional full reflection pattern 322 to form first totally reflected light and second totally reflected light, and the first totally reflected light and the second totally reflected light are emitted through the light exit surface of the thick-walled part 3.

[0066] The thick-walled part full reflection pattern surface 32 is designed based on a base surface stretched from a parabolic line along the distribution trend of the LED light source 2. The full reflection pattern on the thick-walled part full reflection pattern surface 32 is composed of the first functional full reflection pattern 321 and the second functional full reflection pattern 322. The first functional full reflection pattern 321 is designed based on the refracted light of the first functional LED light source 21 entering the thick-walled part 3, and the second functional full reflection pattern 322 is designed based on the refracted light of the second functional LED light source 22 entering the thick-walled part 3. The first functional full reflection pattern 321 and the second functional full reflection pattern 322 are staggered.

[0067] The first functional full reflection pattern 321 corresponds to the first functional LED light source 21. The full reflection pattern is designed by calculating the angle of the refracted light of each light source entering the thick-walled part 3 through the thick-walled part light entrance surface 31 and the requirement of becoming parallel light after total reflection. The corresponding relationship between the first functional full reflection pattern 321 and the first functional LED light source 21 is as shown in Figures 17-18 The gray small square area in the thick-walled part full reflection pattern surface 32 is the first functional full reflection pattern 321, and the first functional full reflection pattern 321 in the dashed box corresponds to the light design of the first functional LED light source 21 in the dashed box.

[0068] The light emitted by the first functional LED light source 21 is refracted into the thick-walled member 3 through the thick-walled member light-incident surface 31, propagates in the thick-walled member 3, and is totally reflected on the first functional total reflection pattern 321. The direction of the totally reflected light changes, the light is horizontally and parallelly irradiated onto the thick-walled member light-emitting pattern surface 33, is then refracted into the air, and lights up the whole thick-walled member light-emitting pattern surface 33 area. The pattern on the thick-walled member light-emitting pattern surface 33 is designed to have a certain diffusion angle, so that the diffused light can meet the light distribution requirements of regulations, or can more evenly light up the whole thick-walled member light-emitting pattern surface 33. The first functional light path schematic diagram is shown in Figure 19 .

[0069] The second functional total reflection pattern 322 corresponds to the second functional LED light source 22. The second functional total reflection pattern 322 is designed by calculating the angle of the refracted light rays emitted by each light source and entering the thick-walled member 3 through the thick-walled member light-incident surface 31 and the requirement of becoming parallel light rays after reflection. The correspondence between the second functional total reflection pattern 322 and the second functional LED light source 22 is shown in Figures 20-21 . The white small square area in the thick-walled member total reflection pattern surface 32 is the second functional total reflection pattern 322, and the second functional total reflection pattern 322 in the dashed box corresponds to the light rays of the second functional LED light source 22 in the dashed box.

[0070] The light emitted by the second functional LED light source 22 is refracted into the thick-walled member 3 through the thick-walled member light-incident surface 31, propagates in the thick-walled member 3, and is totally reflected on the second functional total reflection pattern 322. The direction of the totally reflected light changes, the light is horizontally and parallelly irradiated onto the thick-walled member light-emitting pattern surface 33, is then refracted into the air, and lights up the whole thick-walled member light-emitting pattern surface 33 area. The pattern on the thick-walled member light-emitting pattern surface 33 is designed to have a certain diffusion angle, so that the diffused light can meet the light distribution requirements of regulations, or can more evenly light up the whole thick-walled member light-emitting pattern surface 33. The second functional light path schematic diagram is shown in Figure 22 .

[0071] Preferably, the first functional total reflection pattern 321 and the second functional total reflection pattern 322 are uniformly arranged in an array on the total reflection pattern surface 32; the second functional total reflection pattern 322 is arranged between adjacent first functional total reflection patterns 321, and the first functional total reflection pattern 321 is arranged between adjacent second functional total reflection patterns 322. The light-emitting surface of the thick-walled member 3 is the light-emitting pattern surface 33, and the light-emitting pattern surface 33 is provided with optical teeth for diffusing the first emitted light and the second emitted light.

[0072] As Figure 14 , Figure 19 , Figure 22As shown, the total reflection pattern surface 32 is rectangular in the projection parallel to the first and second emergent light directions; the second functional total reflection pattern 322 and the first functional total reflection pattern 321 are arranged alternately along the length and width directions of the rectangular total reflection pattern surface 32 in the same area in the projection parallel to the first and second emergent light directions. The first and second functional LED light sources 21 and 22 are arranged alternately along the length direction of the rectangular total reflection pattern surface 32 in the projection parallel to the first and second emergent light directions.

[0073] The total reflection pattern surface can make the entire total reflection surface be evenly illuminated at multiple angles, unlike the conventional common total reflection cavity scheme, both LEDs are in a defocused state, and cannot evenly and efficiently illuminate thick-wall parts. The embodiment is arranged alternately by different total reflection patterns, and the optical design is performed on the LED light sources with different functions, so that the light sources with different functions can efficiently and evenly illuminate the light surface when emitting light, and the technical problem that the thick-wall parts cannot be evenly and efficiently illuminated by the common total reflection cavity in the prior art is solved.

[0074] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0075] The specific embodiments of the present application are described above. It should be understood that the present application is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. An optical system for thick-walled components that eliminates dark areas on sidewalls, characterized in that, It includes a PCB board (1), a thick-walled component (3) and multiple LED light sources (2). The multiple LED light sources (2) are sequentially arranged on the PCB board (1) and are correspondingly arranged on one side of the light-incident surface (31) on the thick-walled component (3). The light emitted by the LED light source (2) is refracted by the incident light surface (31) to form incident light. The reflective surface of the thick-walled component (3) is a total reflection patterned surface (32). The total reflection patterned surface (32) is arrayed with total reflection patterns, and the total reflection patterns correspond to the incident light. The total reflection patterned surface (32) is divided into multiple total reflection regions along the arrangement direction of the LED light source (2). The total reflection patterns between adjacent total reflection regions are continuously arranged. Each total reflection region is used to reflect the incident light emitted by the corresponding LED light source (2). The incident light is reflected by the total internal reflection pattern to form a total internal reflection light, and the total internal reflection light is emitted through the light-emitting surface of the thick-walled member (3); The total reflection patterned surface (32) is further divided into a first total reflection pattern (321) and a second total reflection pattern (322). By arranging different total reflection patterns in an alternating manner, optical design is carried out for LED light sources with different functions, so that light sources with different functions can illuminate the light surface efficiently and uniformly when they emit light. The first function total internal reflection pattern (321) corresponds to the first function LED light source (21); The second functional total reflection pattern (322) corresponds to the second functional LED light source (22); the first functional total reflection pattern (321) and the second functional total reflection pattern (322) are both uniformly arranged in an array on the total reflection pattern surface (32); the second functional total reflection pattern (322) is arranged between adjacent first functional total reflection patterns (321), and the first functional total reflection pattern (321) is arranged between adjacent second functional total reflection patterns (322); the total reflection pattern surface (32) is rectangular along the projection parallel to the direction of the emitted light; the second functional total reflection pattern (322) and the first functional total reflection pattern (321) have the same area along the projection parallel to the direction of the emitted light, and are staggered along the length and width directions of the rectangular projection of the total reflection pattern surface (32).

2. The optical system for eliminating dark areas on sidewalls according to claim 1, characterized in that, The base surface of the total reflection patterned surface (32) is a smooth curved surface, and the total reflection pattern is arrayed on the base surface.

3. The optical system for eliminating dark areas on sidewalls according to claim 1, characterized in that, The light-emitting surface of the thick-walled component (3) is a light-emitting patterned surface (33), and optical teeth for diffusing emitted light are provided on the light-emitting patterned surface (33).

4. The optical system for eliminating dark areas on sidewalls according to claim 1, characterized in that, The total reflection patterns on the total reflection patterned surface (32) have the same area when projected along the direction parallel to the outgoing light rays, and are arranged side by side in the length and width directions of the rectangular projection of the total reflection patterned surface (32).

5. The optical system for eliminating dark areas on sidewalls according to claim 4, characterized in that, Along the projection parallel to the direction of the emitted light, multiple LED light sources (2) are arranged at intervals along the length of the rectangular projection of the total reflection patterned surface (32).

6. The optical system for eliminating dark areas on sidewalls according to claim 5, characterized in that, Along the projection parallel to the direction of the emitted light, the distance between adjacent LED light sources (2) is the same, and the rectangular projection of the total reflection patterned surface (32) is divided into multiple sequential and identical rectangular reflection areas; The rectangular reflective areas are set one-to-one with the LED light source (2).

7. The optical system for eliminating dark areas on sidewalls according to claim 1, characterized in that, The light emitted by the LED light source (2) is refracted by the incident surface (31) to form multiple refracted rays with different angles, all within a preset angle range; When multiple refracted rays at different angles are incident on the corresponding total reflection area, they are all totally reflected by the total reflection patterns in the corresponding total reflection area, forming multiple parallel total reflection rays. After passing through the light-emitting surface, the multiple parallel total reflection rays are used to achieve illumination of the unit illumination area. Multiple LED light sources (2) are arranged in parallel to form a preset lighting range, and the edges of the preset lighting range are continuous and smooth.

8. A vehicle signal light, characterized in that, The thick-walled optical system for eliminating dark areas on the sidewalls is described in any one of claims 1-7.

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