Optical structure with high luminous efficiency and uniformity and vehicle lamp

Abstract

The utility model relates to the technical field of optical structures, in particular to an optical structure with high luminous efficiency and uniformity and a vehicle lamp. The optical structure with high luminous efficiency and uniformity comprises a collimation piece and a thick-wall piece, the thick-wall piece is arranged on the outer side of the light-emitting face of the collimation piece, the collimation piece has a light condensation function, and the thick-wall piece has a diffusion function; the light emitting surface of the collimating piece is a first cambered surface with a light condensing effect; the light incident surface of the thick-wall part is a second cambered surface with a light scattering effect, and the light emergent surface of the thick-wall part is provided with first patterns. The optical system comprises the collimation piece and the thick-wall piece, the collimation piece is provided with an optical surface with a light gathering effect to gather parallel light, the thick-wall piece with a diffusion effect is added behind the gathered light, the upper surface and the lower surface of the restraining part of the thick-wall piece are inclined surfaces, large-angle light is restrained in the thick wall, the lighting effect is improved, the light leakage degree of the optical system is reduced, and the light efficiency is improved. The uniformity is improved, and the energy is more concentrated.

Description

Technical Field

[0001] The utility model relates to the technical field of optical structures, in particular to an optical structure and a vehicle lamp with high light efficiency and uniformity. Background Art

[0002] With the development of automobile lighting technology, people's requirements for car lights are getting higher and higher, and more and more car companies have higher requirements for the uniformity of signal lights after lighting. However, the traditional way to improve the uniformity of signal lights is to increase the diffusion on the optical surface, but this method will reduce the light efficiency of the entire optical system and increase the cost of the car lights. At the same time, the optical surface with increased diffusion will refract or reflect more light outside the optical system, resulting in more serious light leakage in the entire optical system, and the appearance of bright lines and bright spots. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide an optical structure and a car light with high light efficiency and uniformity. The utility model comprises a collimator and a thick-walled part. The collimator has an optical surface with a focusing effect to gather parallel light. A thick-walled part with a diffusion effect is added behind the gathered light. The upper and lower surfaces of the constraint part of the thick-walled part are inclined surfaces, which constrain the light with a large angle inside the thick wall, increase the light efficiency, reduce the light leakage of the optical system, improve the uniformity, and make the energy more concentrated.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] An optical structure with high light efficiency and uniformity, comprising a collimator and a thick-walled component, wherein the thick-walled component is arranged outside the light-emitting surface of the collimator, the collimator has a focusing effect, and the thick-walled component has a diffusion effect;

[0006] The light-emitting surface of the collimating component is a first curved surface with a light-condensing effect; the light-entering surface of the thick-walled component is a second curved surface with a light-scattering effect, and the light-emitting surface of the thick-walled component has a first pattern.

[0007] Furthermore, the thick-walled part includes a main body, and the second arc surface and the first pattern are respectively located at two end surfaces of the main body.

[0008] Furthermore, the thick-walled part also includes a connected constraint portion, which includes two inclined surfaces arranged upper and lower, and the two inclined surfaces are connected by a second arc surface, the second arc surface is located at the small end of the constraint portion, and the large end of the constraint portion is connected to the main body; the two inclined surfaces are axially symmetrically arranged about the central axis of the constraint portion.

[0009] Furthermore, the central axis of the constraint portion is arranged to coincide with the central axis of the thick-walled component.

[0010] Furthermore, the first curved surface and the second curved surface are smooth curved surfaces respectively.

[0011] Furthermore, the first curved surface and the second curved surface are patterned curved surfaces respectively.

[0012] Furthermore, the first curved surface and the second curved surface are respectively striped pattern curved surfaces.

[0013] Furthermore, the first pattern is a striped pattern.

[0014] A vehicle lamp comprises the above-mentioned optical structure with high light efficiency and uniformity.

[0015] The beneficial effects of the utility model are as follows: the utility model has a simple structure, a reasonable design, and has the following advantages:

[0016] (1) A collimator and a thick-walled member are provided. The light-emitting surface of the collimator is a first curved surface, which has a focusing effect and gathers parallel light so that all light passing through this optical surface is received by the thick-walled member behind the first curved surface, and the thick-walled member diffuses the light;

[0017] (2) The thick-walled component includes a constraining portion and a main body portion that are connected to each other. The constraining portion includes two inclined surfaces arranged upper and lower. This can cause some light with a large angle to be totally reflected when it hits the inclined surface, thereby constraining some light that was originally intended to be emitted from the thick-walled component to be inside the thick-walled component. The inclined surface of the thick-walled component can gradually reduce the incident angle of the light through multiple reflections, thereby making the energy of the emitted light more concentrated, increasing the light efficiency, reducing the light leakage of the optical system, improving uniformity, and making the energy more concentrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic structural diagram of Example 1;

[0020] Figure 2 yes Figure 1 Sectional view of AA in the middle;

[0021] Figure 3 is a schematic structural diagram of a thick-walled part in Example 1;

[0022] Figure 4 is a schematic structural diagram of Example 2;

[0023] Figure 5 yes Figure 4 Cross-sectional view of the middle BB;

[0024] Figure 6 is a schematic structural diagram of a thick-walled part in Example 2;

[0025] Figure 7 is the optical path diagram of Example 2;

[0026] Figure 8 yes Figure 5 Light path diagram;

[0027] Fig. 9 is the optical path diagram of the thick-walled part in Example 2;

[0028] Fig.10 is a schematic structural diagram of a thick-walled part in Example 3;

[0029] Fig.11 This is the optical path diagram of Example 3.

[0030] In the figure: 1. collimating member, 2. thick-walled member, 3. constraining portion, 4. first arc surface, 5. first pattern, 6. inclined surface, 7. second arc surface, 8. third arc surface. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this description, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Example 1

[0035] like Figures 1 to 3An optical structure with high light efficiency and uniformity shown in the figure comprises a collimator 1 and a thick-walled member 2. The thick-walled member 2 is arranged outside the light-emitting surface of the collimator 1. The collimator 1 has a light-gathering effect, and the thick-walled member 2 has a diffusion effect. The light-emitting surface of the collimator 1 is a first curved surface 4 with a light-gathering effect. The light-entering surface of the thick-walled member 2 is a second curved surface 7 with a light-scattering effect. The light-emitting surface of the thick-walled member 2 has a first pattern 5. The first pattern 5 is a striped pattern, which can make the light from the thick-walled member 2 uniform and soft.

[0036] The thick-walled member 2 comprises a main body, and the second curved surface 7 and the first pattern 5 are respectively located at two end surfaces of the main body. The first curved surface 4 and the second curved surface 7 are respectively smooth curved surfaces.

[0037] A vehicle lamp comprises the above-mentioned optical structure with high light efficiency and uniformity.

[0038] The optical path principle of this embodiment is: a beam of parallel light is directed to the optical surface of the first curved surface 4 of the collimating component 1, and the first curved surface 4 gathers the parallel light to improve the light efficiency, so that all the light passing through this optical surface is received by the thick-walled component 2 behind the first curved surface 4, preventing part of the light from being refracted or reflected outside the optical structure, thereby improving the light efficiency; the second curved surface 7 of the thick-walled component 2 receives the light and diffuses it to improve the uniformity of the light.

[0039] Example 2

[0040] like Figures 4 to 9 An optical structure with high light efficiency and uniformity is shown, comprising a collimating member 1 and a thick-walled member 2, wherein the thick-walled member 2 comprises a constraining portion 3 and a main body portion connected to each other, wherein the constraining portion 3 is located on the light incident surface of the thick-walled member 2 and is disposed close to the first curved surface 4. The first pattern 5 is a striped pattern.

[0041] The constraint part 3 includes two inclined surfaces 6 arranged upper and lower, and the two inclined surfaces 6 are connected by a second arc surface 7. The second arc surface 7 is located at the small end of the constraint part 3, and the large end of the constraint part 3 is connected to the main body. The second arc surface 7 is arranged close to the first arc surface 4; the two inclined surfaces 6 are axially symmetrically arranged about the central axis of the constraint part 3.

[0042] The central axis of the constraint portion 3 is arranged to coincide with the central axis of the thick-walled member 2. The first arc surface 4 and the second arc surface 7 are smooth arc surfaces.

[0043] A vehicle lamp comprises the above-mentioned optical structure with high light efficiency and uniformity.

[0044] The optical path principle of this embodiment is as follows: a beam of parallel light is directed toward the optical surface of the first curved surface 4 of the collimating member 1, and the first curved surface 4 gathers the parallel light so that all the light passing through this optical surface is received by the thick-walled member 2 behind the first curved surface 4; the second curved surface 7 receiving the light diffuses the light, and the constraining portion 3 includes two inclined surfaces 6 arranged up and down, which can cause some large-angle light to be totally reflected when it is directed to the inclined surface 6, and constrain some light that is originally intended to be emitted from the thick-walled member 2 to be inside the thick-walled member 2. The inclined surface 6 of the thick-walled member 2 can gradually reduce the incident angle of the light through multiple reflections, so that the energy of the emitted light is more concentrated, such as Fig. 9 As shown, the incident angle α initially reflected to the inclined surface 6 is β after multiple reflections, and α>β. After the parallel light is converged, diffused and constrained, the light effect of the entire optical structure and the uniformity after lighting can be improved.

[0045] The first curved surface 4 and the second curved surface 7 are smooth curved surfaces, so that the light from the collimator 1 will be deflected when entering the thick-walled part 2. The first curved surface 4 and the second curved surface 7 are smooth curved surfaces, which are convenient for processing and polishing the collimator 1 and the thick-walled part 2, and are easy to manufacture.

[0046] Example 3

[0047] like Figures 10-11 The optical structure with high light efficiency and uniformity shown is different from Example 2 in that the first arc surface 4 and the second arc surface 7 are striped pattern arc surfaces respectively, so that the light from the collimating component 1 enters the thick-walled component 2 without being deflected and the light propagates in a straight line.

[0048] In summary, this optical structure with high light efficiency and uniformity has the following advantages:

[0049] (1) A collimator 1 and a thick-walled member 2 are provided. The light-emitting surface of the collimator 1 is a first curved surface 4, which has a focusing effect and gathers parallel light so that all light passing through this optical surface is received by the thick-walled member 2 behind the first curved surface 4, and the thick-walled member 2 diffuses the light;

[0050] (2) The thick-walled member 2 includes a constraining portion 3 and a main body that are connected to each other. The constraining portion 3 includes two inclined surfaces 6 arranged upper and lower, which can cause some large-angle light to be totally reflected when it hits the inclined surface 6, thereby constraining some light that was originally intended to be emitted from the thick-walled member 2 inside the thick-walled member 2. The inclined surface 6 of the thick-walled member 2 can gradually reduce the incident angle of the light through multiple reflections, thereby making the energy of the emitted light more concentrated, increasing the light effect, reducing the light leakage of the optical system, improving uniformity, and making the energy more concentrated.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An optical structure with high light efficiency and uniformity, characterized by: It comprises a collimating component (1) and a thick-walled component (2), wherein the thick-walled component (2) is arranged outside the light-emitting surface of the collimating component (1), the collimating component (1) has a light-gathering function, and the thick-walled component (2) has a light-diffusing function; The light-emitting surface of the collimating component (1) is a first curved surface (4) having a light-collecting function; the light-entering surface of the thick-walled component (2) is a second curved surface (7) having a light-scattering function; and the light-emitting surface of the thick-walled component (2) has a first pattern (5).

2. The optical structure with high light efficiency and uniformity according to claim 1, characterized in that: The thick-walled part (2) comprises a main body, and the second curved surface (7) and the first pattern (5) are respectively located on the two end surfaces of the main body.

3. The optical structure with high light efficiency and uniformity according to claim 2, characterized in that: The thick-walled part (2) further comprises a connected constraint part (3), the constraint part (3) comprising two inclined surfaces (6) arranged upper and lower, the two inclined surfaces (6) being connected via a second curved surface (7), the second curved surface (7) being located at the small end of the constraint part (3), and the large end of the constraint part (3) being connected to the main body; the two inclined surfaces (6) are arranged axially symmetrically about the central axis of the constraint part (3).

4. The optical structure with high light efficiency and uniformity according to claim 3, characterized in that: The central axis of the constraint portion (3) is arranged to coincide with the central axis of the thick-walled component (2).

5. The optical structure with high light efficiency and uniformity according to claim 1, characterized in that: The first curved surface (4) and the second curved surface (7) are respectively smooth curved surfaces.

6. The optical structure with high light efficiency and uniformity according to claim 1, characterized in that: The first curved surface (4) and the second curved surface (7) are respectively patterned curved surfaces.

7. The optical structure with high light efficiency and uniformity according to claim 6, characterized in that: The first curved surface (4) and the second curved surface (7) are respectively striped pattern curved surfaces.

8. The optical structure with high light efficiency and uniformity according to claim 1, characterized in that: The first pattern (5) is a striped pattern.

9. A vehicle lamp, characterized in that: The invention comprises an optical structure with high light efficiency and uniformity as claimed in any one of claims 1 to 8.

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