Optical structure and optical system suitable for inclined light-emitting surface

Abstract

The utility model relates to the technical field of illumination, in particular to an optical structure and an optical system suitable for an inclined light-emitting surface, the optical structure comprises a collimation structure and a thick-wall light guide body, the thick-wall light guide body is provided with a light-in surface and a light-emitting surface, the light-emitting surface is provided with an inclined surface, and the inclination direction of the light-in surface is the same as that of the inclined surface. The light incident surface comprises a series of refraction and reflection units with the same size. The catadioptric units extend transversely perpendicular to the optical axis, the catadioptric units are distributed from top to bottom along the trend face of the light-in face, each catadioptric unit is composed of a refraction light-in face and a total reflection face, incident light sequentially passes through the refraction light-in face and the total reflection face to be reflected to the light-out face to be emitted, and the light is refracted on the refraction light-in face. Total reflection occurs on the total reflection surface. The optical system comprises a light source and the optical structure. According to the utility model, the problem of insufficient modeling space can be effectively solved, the optical principle is simple, and meanwhile, the overall lighting uniformity is also greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to an optical structure and optical system suitable for an inclined light-emitting surface. Background Technology

[0002] Currently, in the automotive lighting field and other lighting fields, the shapes are generally diverse. However, in some cases, due to the limitation of the shape space, such as the inclined space, on the one hand, the shape requirements must be met, and on the other hand, the light output requirements must be taken into account while reducing the cost of LEDs. Inclined installation spaces often cannot be equipped with optical structures that meet the light output requirements due to insufficient installation space. Therefore, the uniformity of light output in such cases often cannot be met. Utility Model Content

[0003] The technical problem to be solved by this utility model is: In order to overcome the above-mentioned technical problems, this utility model provides an optical structure and optical system suitable for tilted light-emitting surfaces. The combination of thick-walled light guide and collimation structure can effectively solve the problem of insufficient shaping space. The optical principle is simple, and it also greatly improves the overall lighting uniformity.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an optical structure suitable for an inclined light-emitting surface, including a collimating structure and a thick-walled light guide. The thick-walled light guide has an incident surface and an exit surface. The exit surface has an inclined surface. The inclination direction of the incident surface is the same as the inclination direction of the inclined surface. The incident surface includes a series of reflecting units. The reflecting units extend laterally perpendicular to the optical axis. Each reflecting unit is distributed from top to bottom along the trend surface of the incident surface. Each reflecting unit consists of a refracting incident surface and a total reflection surface. The refracting incident surface and the total reflection surface of each reflecting unit intersect to make the surface of the incident surface convex to form a tooth-like structure. The incident light is reflected to the exit surface by the refracting incident surface and the total reflection surface in sequence. The light is refracted at the refracting incident surface and totally reflected at the total reflection surface. The angles of the refracting incident surface and the total reflection surface can be set according to the incident angle of the light and the critical angle of total reflection of the material to reflect the light to the desired direction.

[0005] The refracted light-incident surface is a horizontal plane, and the total internal reflection surface is a 45° inclined total internal reflection surface. Both the horizontal plane and the 45° inclination are based on the width w of the light-emitting surface shape. That is, the width w of the light-emitting surface shape is taken as the horizontal direction. The light-incident surface can be divided into 45° sawtooth surfaces according to any trend, or, if space permits, the entire trend of the light-incident surface can be set as a 45° surface. Furthermore, the total internal reflection achieves a 90° rotation angle for the light, ensuring collimation and thus illuminating the domain of the refracting reflection unit.

[0006] The light-incident surface is composed of a series of reflective units, which are connected sequentially to form the light-incident surface.

[0007] The trend of the incident light surface is parallel to the trend of the inclined surface of the light exiting light surface.

[0008] The light-emitting surface is generally inclined.

[0009] The thick-walled light guide has a bent structure, and the light-emitting surface includes an inclined surface and a vertical surface. The angle between the inclined surface and the vertical surface is greater than 90°, and the inclined surface and the vertical surface are connected by a plane.

[0010] The collimation structure of the optical structure includes multiple collimation units; when the width w of the overall light-emitting surface is less than or equal to the height of the overall light-emitting surface, each collimation unit is arranged along the light-emitting direction, i.e., consistent with the optical axis direction; when the width w of the overall light-emitting surface is greater than or equal to the height of the overall light-emitting surface, each collimation unit is arranged laterally perpendicular to the optical axis.

[0011] Each collimation unit is a condenser or a Fresnel lens, and the light-emitting surface pattern is a corn kernel pattern, a striped pattern, and / or a leather texture pattern.

[0012] An optical system includes a light source and an optical structure, wherein the optical structure is the optical structure suitable for tilting the light-emitting surface described in this utility model.

[0013] The light source is an LED light source, and the collimation structure of the optical structure includes multiple collimation units, with the number and position of the LED light source corresponding one-to-one with the collimation units.

[0014] The beneficial effects of this utility model are that the optical structure and optical system of this utility model, which are suitable for inclined light-emitting surfaces, can effectively solve the problem of insufficient design space, have a simple optical principle, and also greatly improve the overall lighting uniformity. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the optical path of the optical system of this utility model.

[0017] Figure 2 This is a schematic diagram of the optical path of the refracting unit of the optical system of this utility model.

[0018] Figure 3 This is a cross-sectional schematic diagram of the optical structure of the present invention, which is suitable for an inclined light-emitting surface.

[0019] Figure 4 This is a schematic diagram of one arrangement of the collimation structure of the optical structure suitable for the inclined light-emitting surface of this utility model.

[0020] Figure 5This is a schematic diagram of another arrangement of the collimation structure of the optical structure suitable for the inclined light-emitting surface of this utility model.

[0021] Figure 6 This is a schematic diagram of another embodiment of the optical structure of this utility model suitable for an inclined light-emitting surface.

[0022] In the diagram: 1. Collimation unit; 2. Thick-walled light guide; 2-1. Light incident surface; 2-1a. Refraction light incident surface; 2-1b. Total reflection surface; 2-2. Light emitting surface; 2-2a. Inclined surface; 2-2b. Vertical surface; c. Plane; w. Width of light emitting surface shape; 100. LED light source.

[0023] Figure 1 The middle arrow indicates the direction of light emission. Figure 6 The middle arrow indicates the direction of the optical path. Detailed Implementation

[0024] 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.

[0025] like Figure 1-6 As shown, an optical structure suitable for an inclined light-emitting surface according to this utility model includes a collimation structure and a thick-walled light guide 2. The thick-walled light guide 2 has an incident surface 2-1 and an emitting surface 2-2. The emitting surface 2-2 has an inclined surface 2-2a. The inclined direction of the incident surface 2-1 is the same as the inclined direction of the inclined surface 2-2a. The incident surface 2-1 includes a series of reflecting units. The incident surface 2-1 can be divided into a series of reflecting units according to any trend surface, which can be equally or unequally divided. The reflecting units extend laterally perpendicular to the optical axis. Each reflecting unit is distributed from top to bottom along the trend surface of the incident surface 2-1. Each reflecting unit consists of a refracted incident surface 2-1a and a total reflection surface 2-1b. The refracted incident surface 2-1a and the total reflection surface 2-1b of each reflecting unit intersect, causing the surface of the incident surface 2-1 to convex outward to form a tooth-like structure. Figure 1-2 As shown, the incident light is reflected sequentially through the refracting incident surface 2-1a and the total reflection surface 2-1b to exit through the light exiting surface 2-2. The light is refracted at the refracting incident surface 2-1a and totally reflected at the total reflection surface 2-1b. The angles of the refracting incident surface 2-1a and the total reflection surface 2-1b can be set according to the incident angle of the light and the critical angle of total reflection of the material to totally reflect the light to the desired direction.

[0026] When the material of the thick-walled light guide 2 is PC, the critical angle for total internal reflection is 39°. When the material of the thick-walled light guide 2 is PMMA, the critical angle for total internal reflection is 42°. That is to say, the critical angle is different under different media and needs to be designed according to the material of the thick-walled light guide 2.

[0027] The refracted incident surface 2-1a is a horizontal plane, and the total internal reflection surface 2-1b is a 45° inclined total internal reflection surface 2-1b. Both the horizontal plane and the 45° inclination are based on the width w of the light-emitting surface. That is, the horizontal direction is based on the width w of the light-emitting surface. The incident surface 2-1 can be divided into 45° sawtooth surfaces according to any trend surface, or, if space permits, the entire trend surface of the incident surface 2-1 can be set as a 45° sawtooth surface. In other words, the entire trend surface of the incident surface 2-1 has only one reflecting unit with a 45° inclined total internal reflection surface 2-1b. The total internal reflection achieves a 90° rotation angle for the light, collimating the light and thus illuminating the domain of the reflecting unit.

[0028] The light-incident surface 2-1 is composed of a series of reflective units, which are connected sequentially to form the light-incident surface 2-1.

[0029] The trend of the light-incident surface 2-1 is parallel to the trend of the inclined surface 2-2a of the light-outceasing surface 2-2.

[0030] like Figure 3-5 In the embodiment, the light-emitting surface 2-2 is generally an inclined surface 2-2a.

[0031] like Figure 6 As shown, the thick-walled light guide 2 has a bent structure. The light-emitting surface 2-2 includes an inclined surface 2-2a and a vertical surface 2-2b. The angle between the inclined surface 2-2a and the vertical surface 2-2b is greater than 90°. The inclined surface 2-2a and the vertical surface 2-2b are connected by a plane c.

[0032] like Figure 3-5 As shown, the collimation structure of the optical structure includes multiple collimation units 1; when the width of the overall light-emitting surface is less than or equal to the height of the overall light-emitting surface, each collimation unit 1 is arranged along the light-emitting direction, i.e., consistent with the optical axis direction, such as... Figure 4 As shown; when the width w of the overall light-emitting surface is greater than the height of the overall light-emitting surface, each collimation unit 1 is arranged horizontally perpendicular to the optical axis, as follows. Figure 5 As shown. The height and size of the deflection unit are adjustable, adjusting with the overall energy. The collimation structure can also be arranged according to the light emission height and width of the thick-walled light guide 2, and the light emission part is decorated with a series of patterns to ensure uniformity, reduce the number of LEDs and cost.

[0033] Each collimating unit 1 is a condenser or a Fresnel lens, and the light-emitting surface 2-2 has a corn kernel pattern, stripe pattern and / or leather texture pattern.

[0034] like Figure 1As shown, an optical system includes a light source and an optical structure. The optical structure is the one of this invention, suitable for an inclined light-emitting surface. The light source is an LED light source 100, and the collimation structure of the optical structure includes multiple collimation units 1. The number and position of the LED light source 100 and the collimation units 1 correspond one-to-one.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An optical structure suitable for an inclined light-out surface, comprising a collimating structure and a thick-walled light guide (2), the thick-walled light guide (2) having a light-in surface (2-1) and a light-out surface (2-2), characterized in that: The light-exit surface (2-2) has an inclined surface (2-2a), the inclined direction of the light-entrance surface (2-1) is the same as the inclined direction of the inclined surface (2-2a), the light-entrance surface (2-1) comprises a series of catadioptric units, the catadioptric units extend transversely to the optical axis, each catadioptric unit is distributed from top to bottom along the trend surface of the light-entrance surface (2-1), each catadioptric unit is composed of a refractive light-entrance surface (2-1a) and a total reflection surface (2-1b), the refractive light-entrance surface (2-1a) of each catadioptric unit intersects with the total reflection surface (2-1b) to make the light-entrance surface (2-1) surface convex outward to form a dentate structure, the incident light is reflected to the light-exit surface (2-2) in turn through the refractive light-entrance surface (2-1a) and the total reflection surface (2-1b), and the light is refracted at the refractive light-entrance surface (2-1a) and totally reflected at the total reflection surface (2-1b).

2. The optical structure suitable for a tilted light exit surface of claim 1, wherein: The refractive light-entrance surface (2-1a) is a horizontal surface, the total reflection surface (2-1b) is a 45° inclined total reflection surface (2-1b), and the rotation angle of the light achieved by total reflection is 90°.

3. The optical structure suitable for an inclined light-emitting surface as described in claim 1, characterized in that: The light-entrance surface (2-1) is composed of a series of catadioptric units, and each catadioptric unit is sequentially connected to form the light-entrance surface (2-1).

4. The optical structure suitable for an inclined light-emitting surface as described in claim 1, characterized in that: The trend of the light-entrance surface (2-1) is parallel to the trend of the inclined surface (2-2a) of the light-exit surface (2-2).

5. The optical structure suitable for an inclined light-emitting surface as described in claim 1, characterized in that: The light-exit surface (2-2) is an inclined surface (2-2a) as a whole.

6. The optical structure suitable for an inclined light-emitting surface as described in claim 1, characterized in that: The thick-walled light guide (2) is a bent structure, the light-exit surface (2-2) comprises an inclined surface (2-2a) and a vertical surface (2-2b), the angle between the inclined surface (2-2a) and the vertical surface (2-2b) is greater than 90°, and the inclined surface (2-2a) and the vertical surface (2-2b) are connected by a plane (c).

7. The optical structure of claim 1, wherein the light extraction surface is adapted to be tilted. The collimation structure of the optical structure comprises a plurality of collimation units (1); when the overall light-exit surface modeling width w is less than or equal to the overall light-exit surface modeling height, each collimation unit (1) is arranged along the light-exit direction; and when the overall light-exit surface modeling width w is greater than the overall light-exit surface modeling height, each collimation unit (1) is arranged transversely to the optical axis.

8. The optical structure suitable for an inclined light-emitting surface as described in claim 1, characterized in that: Each collimation unit (1) is a condenser or a Fresnel lens, and the pattern of the light-exit surface (2-2) is a corn kernel pattern, a stripe pattern and / or a skin pattern.

9. An optical system comprising a light source and an optical structure, characterized in that The optical structure is the optical structure suitable for inclined light-exit surface according to any one of claims 1-8.

10. The optical system of claim 9, wherein: The light source is an LED light source (100), the collimation structure of the optical structure comprises a plurality of collimation units (1), and the LED light source (100) corresponds to the number and position of the collimation units (1) one by one.

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