CN213686652U - Optical structure for ensuring uniformity of large-area light-emitting area - Google Patents
Optical structure for ensuring uniformity of large-area light-emitting area Download PDFInfo
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- CN213686652U CN213686652U CN202022610475.6U CN202022610475U CN213686652U CN 213686652 U CN213686652 U CN 213686652U CN 202022610475 U CN202022610475 U CN 202022610475U CN 213686652 U CN213686652 U CN 213686652U
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Abstract
The utility model discloses an optical structure for ensuring the uniformity of a large-area light-emitting area, which is provided with a reflecting part and a collimating part arranged at the bottom of the reflecting part, wherein the collimating part is provided with a diffusion structure, and the reflecting part is provided with a step surface; the light of the light source is parallel light beam after passing through the collimation part and is horizontally emitted out through the reflection part. The optical structure can achieve a large-area light emitting effect and can obtain a more uniform lighting effect.
Description
Technical Field
The utility model belongs to the technical field of the technique of automotive lighting's and specifically relates to an optical structure who guarantees large tracts of land light zone homogeneity.
Background
With the rapid development of automobile lighting technology, the design of the lamp is not only required to meet the requirements of regulations, but also the appearance and the lighting effect are more and more emphasized by people. For a vehicle lamp shape having a large light emitting area, it is difficult to make the entire light emitting area uniform.
Currently, the optical structures of the existing car lamps in the market are mainly the following two types:
firstly, LED direct radiation + condenser: the particle sense can not be avoided, one bright spot corresponds to one condenser, and the problem that the dark area is still lighted by light diffusion only by means of the patterns of the light entering part of the condenser.
Second, reflector: and for a large-area light emitting area, because the light emitting width is wide, the defects that the reflecting part is bright at the end close to the LED and dark at the position far away from the LED are obvious.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the background technology, an optical structure for ensuring the uniformity of a large-area light emitting area is provided, so that a large-area light emitting effect is achieved, and a more uniform lighting effect is obtained.
The utility model provides a technical scheme that its technical problem adopted is: an optical structure for ensuring the uniformity of a large-area light-emitting area comprises a reflecting part and a collimating part arranged at the bottom of the reflecting part, wherein a diffusion structure is arranged on the collimating part, and a step surface is arranged on the reflecting part; the light of the light source is parallel light beam after passing through the collimation part and is horizontally emitted out through the reflection part.
More specifically, in the above technical solution, the top of the collimating part is provided with a thick-walled part and a light emitting part, the thick-walled part is located between the reflecting part and the light emitting part, the collimating part collects light emitted by the light source to form parallel light, the parallel light is reflected by the reflecting part to form a reflected light beam, the reflected light beam is transmitted in the thick-walled part, and finally the reflected light beam is emitted through the light emitting part.
More specifically, in the above technical solution, the collimating part is a polished reflecting surface.
More specifically, in the above technical solution, the collimating part is any one of a condenser, a lens and a reflecting curved surface.
More specifically, in the above-described aspect, the step surface is provided on an inner surface of the reflection portion.
More specifically, in the above-described aspect, the step surface is provided on an outer surface of the reflection portion.
More specifically, in the above technical solution, the diffusion structure is a stripe diffusion structure or a corn grain pattern diffusion structure that is disposed on the collimating part light incident surface and is used for changing a light ray diffusion angle.
More specifically, in the above technical solution, when the collimation part is a reflection curved surface, an aluminum plating structure or a chrome plating structure is disposed on the reflection curved surface.
More specifically, in the above technical solution, the step surface is formed by alternately distributing a plurality of vertical surfaces and a plurality of reflecting surfaces having a reflecting function or a total reflecting function one by one, and an acute angle formed between the reflecting surface and the vertical surface is set to be a, and a is greater than 0 ° and less than 90 °.
More specifically, in the above technical solution, the collimating part and the reflecting part are an integral structure, and an aluminum-plated structure or a chrome-plated structure is disposed on a surface of the integral structure.
The utility model has the advantages that: the optical structure is mainly applied to the car lamp and particularly has the following advantages:
the reflection part is different from a traditional polishing inclined plane, but is a step surface formed by a certain duty ratio, and the height of a light emergent area can be controlled by the integral inclination and the duty ratio of the reflection part, so that a large-area light emergent effect is achieved;
the collimating part can select the condenser, the lens, the reflecting curved surface and other forms, and the surface of the collimating part is wholly or locally designed into a diffusion structure with a fringe surface, a corn grain pattern surface and the like, wherein the diffusion structure can change the light diffusion angle at will, so that the problem of local dark areas is avoided, and a more uniform lighting effect is obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the description of the lower part are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of an optical structure according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view taken at D-D of FIG. 1;
fig. 3 is a partially enlarged view of the step surface.
Fig. 4 is a schematic view of an optical structure according to a second embodiment of the present invention;
FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;
fig. 6 is a schematic view of an optical structure according to a third embodiment of the present invention;
FIG. 7 is a cross-sectional view taken at B-B of FIG. 6;
fig. 8 is a schematic view of an optical structure according to a fourth embodiment of the present invention;
FIG. 9 is a cross-sectional view taken at C-C of FIG. 8;
the reference numbers in the drawings are: 1. a collimating section; 2. a reflection section; 201. a vertical plane; 202. a reflective surface; 3. a thick-walled portion; 4. and a light emergent part.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to fig. 1, 2 (arrows indicate light directions) and 3, an optical structure for ensuring uniformity of a large-area light-emitting region includes a reflection portion 2 and a collimation portion 1 disposed at the bottom of the reflection portion 2, a diffusion structure capable of changing a light diffusion angle is disposed on all or part of the surface of the collimation portion 1, a step surface is disposed on the reflection portion 2, and the collimation portion 1 is a polished reflection surface.
It should be noted that: firstly, the position point of an LED light source needs to be determined, then the collimation part 1 is made according to the LED light source, the most basic principle of the collimation part 1 is a parabola, and the position of the LED light source is the focus of the parabola.
The step surface is arranged on the inner surface of the reflecting part 2, the reflecting part 2 can be inclined to any angle according to the height of the light emergent area, and different areas of the collimating part 1 can be controlled through inclination adjustment, so that the uniformity is controlled.
The step surface is formed by a plurality of vertical surfaces 201 and a plurality of reflecting surfaces 202 which play a role of reflection or total reflection, the vertical surfaces 201 and the reflecting surfaces 202 are alternately distributed one by one and combined at a certain duty ratio, the integral inclination and the duty ratio of the reflecting part 2 are determined by the height of the light emergent area, an acute angle formed between the reflecting surface 202 and the vertical surface 201 is set to be A, and 0 degrees < A < 90 degrees, namely the acute angle is adjusted within 0-90 degrees according to actual conditions, and preferably the acute angle is 45 degrees.
The reflecting part 2 is different from a traditional polishing inclined plane, but is a step surface formed by a certain duty ratio, and the height of a light emitting area can be controlled by the integral inclination and the duty ratio of the reflecting part 2, so that a large-area light emitting effect is achieved.
The diffusion structure is the stripe diffusion structure or the kernel of corn decorative pattern diffusion structure of setting on the 1 income plain noodles in collimation portion, and the problem of local dark space is avoided appearing in the setting of diffusion structure to obtain more even effect of lighting.
When the stripe diffusion structure is disposed on the light incident surface of the collimating part 1, a stripe surface is formed. When the curved surface corn grain pattern diffusion structure is arranged on the light incident surface of the collimation part 1, a curved surface corn grain pattern surface is formed. The light rays are diffused by the diffusion structure and then emitted out through the reflection part 2, so that the transverse uniformity and the longitudinal uniformity can be better optimized.
The collimating part 1 and the reflecting part 2 are of an integral structure, i.e. the collimating part 1 and the reflecting part 2 are integrated into a whole. The surface of the integrated structure is provided with an aluminum plating structure or a chromium plating structure, and particularly, the surface of the integrated structure is subjected to polishing treatment, aluminum plating treatment or chromium plating treatment, and the surface is subjected to reflection treatment through the polishing treatment, the aluminum plating treatment or the chromium plating treatment and the like and then is transmitted.
The optical structure utilizes two reflections to distribute light, and the light of the LED light source is parallel light beams after passing through the collimation part 1 and then horizontally emitted out through the reflection part 2.
Example two
Referring to fig. 4 and 5 (arrows indicate light directions), the second embodiment is different from the first embodiment in that:
the top of the collimating part 1 is provided with a thick-walled part 3 and a light emergent part 4, and the thick-walled part 3 is positioned between the reflecting part 2 and the light emergent part 4. The step surface is provided on the outer surface of the reflection part 2.
The optical structure utilizes primary reflection to distribute light, the collimation part 1 collects the light emitted by the LED light source to form parallel light, the parallel light is reflected by the reflection part 2 to form a reflected light beam, the reflected light beam is transmitted in the thick wall part 3, and finally the reflected light beam is emitted through the light emitting part 4.
Specifically, the collimating part 1 is a conventional condenser, light emitted by the LED light source is collected by the condenser and then totally reflected by the reflecting part 2, the direction of the light is changed, the light is transmitted by the thick-wall part 3 and finally emitted by the light emitting part 4, and the light emitting effect of the whole area is achieved.
EXAMPLE III
Referring to fig. 6 and 7 (arrows indicate light directions), the third embodiment is different from the first embodiment in that:
the top of the collimating part 1 is provided with a thick-walled part 3 and a light emergent part 4, and the thick-walled part 3 is positioned between the reflecting part 2 and the light emergent part 4. The step surface is provided on the outer surface of the reflection part 2.
The diffusion structure is the kernel of corn decorative pattern diffusion structure of setting on the 1 income plain noodles in collimation portion, and wherein the size and the diffusion angle of kernel of corn decorative pattern all can be adjusted, and light diffusion direction also can effective control.
The collimating part 1 is a lens, the optical structure performs light distribution on light by utilizing primary reflection, the light emitted by the LED light source is collected and diffused by the lens and then reaches the reflecting part 2 playing a role of total reflection, then the direction of the light is changed, the light is transmitted by the thick-wall part 3, and finally the light is emitted by the light emitting part 4.
Example four
Referring to fig. 8 and 9 (arrows indicate light directions), the fourth embodiment is different from the first embodiment in that:
the top of the collimating part 1 is provided with a thick-walled part 3 and a light emergent part 4, and the thick-walled part 3 is positioned between the reflecting part 2 and the light emergent part 4. The step surface is provided on the outer surface of the reflection part 2.
The diffusion structure is a stripe diffusion structure arranged on the light incident surface of the collimation part 1, and the diffusion angle can be adjusted by changing the stripe spacing and the stripe arch height of the stripe surface.
The collimation part 1 is a reflection curved surface, an aluminum plating structure or a chromium plating structure is arranged on the reflection curved surface, specifically, the local part of the reflection curved surface is processed by polishing, aluminum plating or chromium plating, and the surface is processed by polishing, aluminum plating or chromium plating and the like to play a reflection role and then is transmitted.
The optical structure utilizes two reflections to distribute light, the light emitted by the LED light source reaches the reflecting part 2 playing a role of total reflection after being reflected by the reflecting curved surface, the direction of the light is changed, and the light is transmitted by the thick-wall part 3 and finally emitted by the light emitting part 4.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. An optical structure for ensuring uniformity of a large-area light-emitting area is characterized in that: the collimating lens is provided with a reflecting part (2) and a collimating part (1) arranged at the bottom of the reflecting part (2), wherein a diffusion structure is arranged on the collimating part (1), and a step surface is arranged on the reflecting part (2); the light of the light source is parallel light beams after passing through the collimation part (1), and the light is horizontally emitted through the reflection part (2).
2. The optical structure of claim 1, wherein the optical structure is characterized in that: the collimating lens is characterized in that a thick-wall part (3) and a light emitting part (4) are arranged at the top of the collimating part (1), the thick-wall part (3) is located between the reflecting part (2) and the light emitting part (4), the collimating part (1) collects light rays emitted by a light source to form parallel light, the parallel light is reflected by the reflecting part (2) to form a reflected light beam, the reflected light beam is transmitted in the thick-wall part (3), and finally the reflected light beam is emitted through the light emitting part (4).
3. The optical structure of claim 1, wherein the optical structure is characterized in that: the collimation part (1) is a polished reflecting surface.
4. The optical structure of claim 2, wherein the optical structure is characterized in that: the collimation part (1) is any one of a condenser, a lens and a reflecting curved surface.
5. An optical structure for ensuring uniformity in a large area light-exiting region as claimed in claim 1 or 3, wherein: the step surface is arranged on the inner surface of the reflecting part (2).
6. An optical structure for ensuring uniformity in a large area light-exiting region as claimed in claim 2 or 4, wherein: the step surface is arranged on the outer surface of the reflecting part (2).
7. An optical structure for ensuring uniformity in a large area light-exiting region as claimed in claim 1 or 2, wherein: the diffusion structure is a stripe diffusion structure or a corn grain pattern diffusion structure which is arranged on the light incidence surface of the collimation part (1) and is used for changing the light ray diffusion angle.
8. The optical structure of claim 4, wherein the optical structure is characterized in that: when the collimation part (1) is a reflecting curved surface, an aluminum plating structure or a chromium plating structure is arranged on the reflecting curved surface.
9. The optical structure of claim 1, wherein the optical structure is characterized in that: the step surface is formed by alternately distributing a plurality of vertical surfaces (201) and a plurality of reflecting surfaces (202) which play a role of reflection or total reflection one by one, and an acute angle formed between the reflecting surface (202) and the vertical surface (201) is set to be A, and the degree of A is more than 0 degree and less than 90 degrees.
10. The optical structure of claim 1, wherein the optical structure is characterized in that: the collimation part (1) and the reflection part (2) are of an integrated structure, and an aluminum plating structure or a chromium plating structure is arranged on the surface of the integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022610475.6U CN213686652U (en) | 2020-11-12 | 2020-11-12 | Optical structure for ensuring uniformity of large-area light-emitting area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022610475.6U CN213686652U (en) | 2020-11-12 | 2020-11-12 | Optical structure for ensuring uniformity of large-area light-emitting area |
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| CN213686652U true CN213686652U (en) | 2021-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116697296A (en) * | 2023-08-03 | 2023-09-05 | 常州星宇车灯股份有限公司 | Light source coupling structure |
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2020
- 2020-11-12 CN CN202022610475.6U patent/CN213686652U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116697296A (en) * | 2023-08-03 | 2023-09-05 | 常州星宇车灯股份有限公司 | Light source coupling structure |
| CN116697296B (en) * | 2023-08-03 | 2023-10-13 | 常州星宇车灯股份有限公司 | light source coupling structure |
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