Light-emitting element, optical module and vehicle lamp

Abstract

A light-emitting element (1), an optical module and a vehicle lamp. A visual light exit region (4) is provided on a light-emitting side of the light-emitting element (1), an ambient light entrance region (2) is provided on a side wall close to the light-emitting side of the light-emitting element (1), and an ambient light reflection region (3) is arranged away from the light-emitting side of the light-emitting element (1); and the ambient light entrance region (2), the ambient light reflection region (3) and the visual light exit region (4) are configured to be sequentially located in a visual light path. Specifically, ambient light enters the light-emitting element (1) through the ambient light entrance region (2) and propagates to the ambient light reflection region (3), and after being reflected at least twice by the ambient light reflection region (3), the ambient light is transmitted to the visual light exit region (4), and is emitted from the visual light exit region (4) to form visual light. By means of the provision of the above three regions on the light-emitting element (1), the light-emitting element (1) exhibits a crystal texture-like visual effect when being not illuminated by a light source, thereby solving the problem of existing high-beam and low-beam modules having a single form and being unable to provide a crystal texture visual effect.

Description

A light-emitting element, an optical module and a vehicle lamp Technical Field

[0001] This application belongs to the field of automotive lighting technology, and particularly relates to a light-emitting element, an optical module, and a vehicle lamp. Background Technology

[0002] Crystal-textured headlight components can bring a luxurious feel to a vehicle, meeting the current market's aesthetic demands, but they are difficult to satisfy the functional requirements of automotive lighting.

[0003] Currently, the most recognized crystal-like and visually appealing headlights are made of artificial crystal, or glass. These are expensive and heavy, and can only be used as ambient lighting, lacking high / low beam illumination or signal indication functions. Existing high / low beam modules have a simple form, with the visible headlight appearance being that of an optical lens, resulting in a dull visual experience. These features are typically minimized in headlight design, usually hidden in the lower part of split headlights or deep within the headlight housing.

[0004] Utility Model Content

[0005] The technical problem to be solved by this application is to provide light-emitting elements, optical modules and vehicle lights to solve the problem that the existing high and low beam modules have a single form and cannot provide a crystal-like visual effect.

[0006] To solve the above problems, the technical solution of this application is as follows:

[0007] A light-emitting element according to this application includes an ambient light intake area, an ambient light reflection area, and a visual light emission area;

[0008] The visual light emission area is located on the light emission side of the light emission element;

[0009] Along the optical axis of the light-emitting element, the ambient light intake area is disposed on the sidewall close to the light-emitting side of the light-emitting element, and the ambient light reflection area is disposed away from the light-emitting side of the light-emitting element.

[0010] In this process, ambient light rays enter the light-emitting element through the ambient light intake area and are transmitted to the ambient light reflection area. After being reflected at least twice by the ambient light reflection area, the light rays are transmitted to the visual light emission area and emitted from the visual light emission area to form visual light.

[0011] The light-emitting element of this application has a thickness A in the optical axis direction, where A ≥ 20 mm.

[0012] The light-emitting element of this application includes at least one polygonal plane formed on the light-emitting element, wherein the ambient light intake area, the ambient light reflection area, and the visual light emission area are all comprising an ambient light intake area, the ambient light reflection area, and the visual light emission area. The number of sides of each polygonal plane is n, where 3 ≤ n ≤ 8.

[0013] The light-emitting element of this application includes at least a primary reflection region and a secondary reflection region arranged sequentially along the visual light path, wherein the ambient light reflection region comprises at least a primary reflection region and a secondary reflection region.

[0014] In the light-emitting element of this application, the ambient light intake area, the primary reflection area, the secondary reflection area, and the visual light emission area are respectively formed as a first line segment, a second line segment, a third line segment, and a fourth line segment on the longitudinal section of the light-emitting element. The extension lines of the first line segment and the second line segment intersect to form a first intersection point, and the extension lines of the third line segment and the fourth line segment intersect to form a second intersection point. The line connecting the first intersection point and the second intersection point is a dividing line.

[0015] Wherein, the first line segment and the fourth line segment form an angle α with the dividing line, and the second line segment and the third line segment form an angle β with the dividing line.

[0016] The light-emitting element of this application is made of PC, with 10°≤α≤43° and 24°≤β≤65°.

[0017] Alternatively, the material of the light-emitting element is PMMA, with 12°≤α≤56° and 21°≤β≤63°;

[0018] Alternatively, the light-emitting element may be made of glass, with a value of 10°≤α≤61° and 20°≤β≤57°.

[0019] The light-emitting element of this application includes a plurality of secondary reflective sub-planes offset along the optical axis in the secondary reflection region.

[0020] The light-emitting element of this application further includes a reflection enhancement element, wherein the reflective surface of the reflection enhancement element is attached to at least a portion of the ambient light reflection area.

[0021] In the light-emitting element of this application, the reflection enhancement member is disposed on the light-incident side of the light-emitting element, and the reflection enhancement member covers at least a portion of the light-emitting element.

[0022] An optical module according to this application includes a light source, a primary optical element, and a light-emitting element as described in any one of the above.

[0023] The light emitted from the light source is converged by the primary optical element and then emitted by the light-emitting element to form the main light pattern.

[0024] One type of vehicle light according to this application includes the aforementioned optical module.

[0025] Because this application adopts the above technical solution, it has the following advantages and positive effects compared with the prior art:

[0026] One embodiment of this application provides a visual light emitting area on the light-emitting side of the light-emitting element, an ambient light receiving area on the sidewall near the light-emitting side of the light-emitting element, and an ambient light reflecting area on the light-emitting side away from the light-emitting element. The ambient light receiving area, ambient light reflecting area, and visual light emitting area are configured sequentially in a visual light path. Specifically, ambient light rays enter the light-emitting element through the ambient light receiving area and are transmitted to the ambient light reflecting area. After being reflected at least twice by the ambient light reflecting area, the light rays are transmitted to the visual light emitting area and emitted from the visual light emitting area to form visual light. In other words, by providing these three areas on the light-emitting element, this application achieves a crystal-like visual effect when the light-emitting element is not illuminated by a light source, thereby solving the problem that existing high and low beam modules have a single form and cannot provide a crystal-like visual effect. Attached Figure Description

[0027] Figure 1 is a schematic diagram of the overall light-emitting element of this application;

[0028] Figure 2 is a schematic diagram of the ambient light intake area of ​​the light-emitting element in this application;

[0029] Figure 3 is a schematic diagram of the visual light emission area of ​​the light-emitting element of this application;

[0030] Figure 4 is a schematic diagram showing the angles between the various regions of the light-emitting element in this application;

[0031] Figure 5 is a schematic diagram of the primary reflection region of the light-emitting element of this application;

[0032] Figure 6 is a schematic diagram of the secondary reflection region of the light-emitting element of this application;

[0033] Figure 7 is a schematic diagram of the reflection enhancement component of the light-emitting element of this application;

[0034] Figure 8 is an exploded view of the light-emitting element and the reflection enhancement component of this application;

[0035] Figure 9 is an exploded view of the optical module of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Light-emitting element; 101. Light-emitting surface; 2. Ambient light intake area; 3. Ambient light reflection area; 31. Primary reflection area; 32. Secondary reflection area; 321. First and second secondary reflector planes; 322. Second and second secondary reflector planes; 4. Visual light emission area; 5. Boundary line; 6. Lens bracket mounting surface; 7. Reflection enhancement component; 701. Reflective surface; 8. Circuit board; 9. Heat sink; 10. Reflector; 11. Inner lens. Detailed Implementation

[0037] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the light-emitting element, optical module, and vehicle lamp proposed in this utility model. The advantages and features of this utility model will become clearer from the following description and claims.

[0038] Referring to Figures 1 to 6, one embodiment of this application provides a light-emitting element 1 for use with different optical systems to realize the function of an optical module. The light-emitting element 1 includes an ambient light intake region 2, an ambient light reflection region 3, and a visual light emission region 4. The visual light emission region 4 is disposed on the light-emitting side of the light-emitting element 1. Along the optical axis of the light-emitting element 1, the ambient light intake region 2 is disposed on the sidewall close to the light-emitting side of the light-emitting element 1, and the ambient light reflection region 3 is disposed away from the light-emitting side of the light-emitting element 1.

[0039] In this embodiment, the ambient light intake area 2, the ambient light reflection area 3, and the visual light output area 4 are configured sequentially within a visual light path. Specifically, ambient light rays enter the output element 1 through the ambient light intake area 2 and are transmitted to the ambient light reflection area 3. After being reflected at least twice by the ambient light reflection area 3, the light is transmitted to the visual light output area 4, where it is emitted to form visual light (the visual light output area 4 can be the output surface 101 of the output element 1, or other optical surfaces close to the output surface 101 of the output element 1, thus serving as the output surface from which ambient light rays can be emitted to form visual light and is visible to the human eye). In other words, this embodiment, by setting three areas on the output element 1, achieves a crystal-like visual effect when the output element 1 is not illuminated by a light source, thereby solving the problem that existing far and near beam modules have a single form and cannot simultaneously provide a crystal-like visual effect.

[0040] The specific structure of the light-emitting element 1 in this embodiment will be further described below:

[0041] In this embodiment, in order to realize the above-mentioned visual light path, the thickness of the light-emitting element 1 in the optical axis direction needs to meet certain requirements (the light-emitting element 1 can be a thick-walled lens), and the thickness is A, where A≥20mm.

[0042] In this embodiment, the ambient light intake area 2, ambient light reflection area 3, and visual light output area 4 all include at least one polygonal plane formed on the light-emitting element 1, and the number of sides of each polygonal plane is n, where 3 ≤ n ≤ 8. Specifically, the polygonal plane can be formed on the light-emitting side, sidewall, or light-incident side of the light-emitting element 1 by cutting or molding. It should be noted that the ambient light intake area 2 can be located on the sidewall of the light-emitting element 1, the ambient light reflection area 3 can be located on the sidewall or light-incident side of the light-emitting element 1, and the visual light output area 4 can be located on the light-emitting side of the light-emitting element 1 or reused with the light-emitting surface 101 of the light-emitting element 1. That is, when the light-emitting element 1 is lit by a light source, the light emitted by the light source is finally emitted from the light-emitting surface 101, and when the light-emitting element 1 is not lit by a light source, the ambient light can also be emitted from the light-emitting surface 101 to form a dazzling effect. It should be noted that the light-incident side of the light-emitting element 1 refers to the side where the light emitted from the light source enters the light-emitting element 1 when the light-emitting element is lit by the light source, while the light-emitting side of the light-emitting element 1 refers to the side where the light emitted from the light source finally leaves the light-emitting element 1.

[0043] In this embodiment, the aforementioned ambient light reflection region 3 may specifically include at least a primary reflection region 31 and a secondary reflection region 32 arranged sequentially along the visual light path, for realizing primary reflection and secondary reflection, respectively. The primary reflection region 31 may correspond to the ambient light intake region 2, and both are located on the same side of the optical axis of the light emitting element 1; the secondary reflection region 32 may correspond to the visual light emission region 4, and both are located on the same side of the optical axis of the light emitting element 1 (i.e., the primary reflection region 31 and the secondary reflection region 32 are respectively located on opposite sides of the optical axis of the light emitting element 1).

[0044] Referring to Figure 4, in this embodiment, the polygonal planes of the three regions mentioned above, in addition to satisfying the formation of the aforementioned visual light path, can also meet certain angular requirements, as detailed below:

[0045] The ambient light intake area 2, the primary reflection area 31, the secondary reflection area 32, and the visual light output area 4 form a first line segment, a second line segment, a third line segment, and a fourth line segment respectively on the longitudinal section of the light output element 1 (the longitudinal section here is formed by dividing the light output element 1 by a virtual vertical plane where the optical axis is located, and the number of such virtual vertical planes is not limited). The extensions of the first line segment and the second line segment intersect to form a first intersection point, and the extensions of the third line segment and the fourth line segment intersect to form a second intersection point. The line connecting the first intersection point and the second intersection point is the dividing line 5.

[0046] Among them, the first and fourth line segments form an angle α with the dividing line 5, and the second and third line segments form an angle β with the dividing line 5 (that is, the angles formed by each line segment relative to the dividing line 5 are defined). The function of the included angles α and β is: when the included angles α and β meet the angle requirements of a specific material, the ambient light rays entering from the polygonal plane of the ambient light intake area 2 can be refracted first, reflected by the polygonal plane of the primary reflection area 31 and the polygonal plane of the secondary reflection area 32, and then emitted through the polygonal plane of the visual light output area 4. The emitted light rays are more concentrated and can show the most brilliant effect in the visible angle of the headlights.

[0047] The values ​​of the included angles α and β vary depending on the material, specifically determined by the refractive index and reflectivity of the light-emitting element 1. For example, when the material of the light-emitting element 1 is PC, the range of the angles α and β is: 10°≤α≤43°, 24°≤β≤65°. When the material of the light-emitting element 1 is PMMA, the range of the angles α and β is: 12°≤α≤56°, 21°≤β≤63°. And when the material of the light-emitting element 1 is glass, the range of the angles α and β is: 10°≤α≤61°, 20°≤β≤57°.

[0048] In this embodiment, to ensure the formation of the visual light path as much as possible without affecting the light emission range of the light-emitting element 1 when illuminated by the light source, the secondary reflection region 32 includes several secondary reflection sub-planes offset backward along the optical axis (i.e., in the opposite direction to the light emission direction). The slopes of each secondary reflection sub-plane are the same in the offset direction, and the sub-planes are connected by transition surfaces. In this embodiment, there may be two secondary reflection sub-planes: a first secondary reflection sub-plane 321 and a second secondary reflection sub-plane 322. Of course, in other embodiments, the primary reflection region 31 may also be divided into multiple primary reflection sub-planes; this is not specifically limited here.

[0049] Referring to Figures 7 and 8, this embodiment further includes a reflection enhancement member 7, the reflective surface 701 of which is attached to at least a portion of the ambient light reflection area 3. The reflection enhancement member 7 can achieve reflection enhancement in many ways. For example, the reflection enhancement member 7 can be a reflective coating directly disposed in the ambient light reflection area 3; reflection enhancement can also be achieved by setting the material of the reflection enhancement member 7 to be different from the material of the light-emitting element 1; or a reflective coating can be disposed on the solid surface of the reflection enhancement member 7 and attached to the corresponding ambient light reflection area 3.

[0050] Furthermore, the reflection enhancement member 7 is disposed on the light-incident side of the light-emitting element 1, and the reflection enhancement member 7 wraps around at least a portion of the light-emitting element 1. Specifically, the reflection enhancement member 7 can be a lens bracket, which supports the light-emitting element 1 by wrapping around it. The part of the wrapping surface of the lens bracket can be configured to have the aforementioned reflective surface 701 and is attached to a portion of the ambient light reflection area 3. For example, in this application, the part of the wrapping surface of the lens bracket is attached to the second secondary reflector plane 322 to achieve reflection enhancement at that location, thereby enhancing the brightness variation formed by the visual light path (i.e., the light reflected from the second secondary reflector plane 322 is brighter than the light reflected from the first secondary reflector plane 321), making the brilliance effect more obvious.

[0051] Referring to Figure 9, another embodiment of this application provides an optical module, including a light source, a primary optical element, and the light-emitting element 1 in the above embodiments.

[0052] In this embodiment, when the light-emitting element 1 is illuminated by a light source, the light emitted from the light source is converged by the primary optical element and then emitted by the light-emitting element 1 to form the main light pattern. When the light-emitting element 1 is not illuminated by a light source, ambient light enters the light-emitting element 1 through the ambient light intake area 2 and is transmitted to the ambient light reflection area 3. After being reflected at least twice by the ambient light reflection area 3, it is transmitted to the visual light emission area 4 and emitted from the visual light emission area 4 to form visual light.

[0053] Furthermore, the optical module of this embodiment also includes a circuit board 8 for setting the light source and a heat sink 9 attached to the circuit board 8. The primary optical elements may specifically include a reflector 10 and an inner lens 11 arranged sequentially along the optical path. Specifically, the heat sink 9, the inner lens 11, and the reflector 10 can be installed at the rear end of the lens holder, the circuit board 8, the reflector 10 are fixedly connected to the heat sink 9, and the light-emitting element 1 is installed at the front end of the lens holder.

[0054] In other embodiments, the specific forms of the light source and primary optical elements can be varied and are not specifically limited here.

[0055] Another embodiment of this application provides a vehicle headlight, including the optical module described in the above embodiment. This headlight features a visual light emitting area 4 on the light-emitting side of the light-emitting element 1, an ambient light receiving area 2 on the sidewall near the light-emitting side of the light-emitting element 1, and an ambient light reflecting area 3 on the light-emitting side away from the light-emitting element 1. The ambient light receiving area 2, the ambient light reflecting area 3, and the visual light emitting area 4 are configured sequentially within a visual light path. Specifically, ambient light rays enter the light-emitting element 1 through the ambient light receiving area 2 and are transmitted to the ambient light reflecting area 3. After being reflected at least twice by the ambient light reflecting area 3, the light rays are transmitted to the visual light emitting area 4 and emitted from the visual light emitting area 4 to form visual light. By providing these three areas on the light-emitting element 1, a crystal-like visual effect is achieved when the light-emitting element 1 is not illuminated by a light source, thus solving the problem that existing high and low beam modules have a single form and cannot simultaneously provide a crystal-like visual effect.

[0056] The embodiments of this application have been described in detail above with reference to the accompanying drawings, but this application is not limited to the above embodiments. Even if various changes are made to this application, if these changes fall within the scope of the claims of this application and their equivalents, they shall still fall within the protection scope of this application.

Claims

1. A light-emitting element, characterized in that, This includes the ambient light intake area, the ambient light reflection area, and the visual light output area; The visual light emission area is located on the light emission side of the light emission element; Along the optical axis of the light-emitting element, the ambient light intake area is disposed on the sidewall close to the light-emitting side of the light-emitting element, and the ambient light reflection area is disposed away from the light-emitting side of the light-emitting element. In this process, ambient light rays enter the light-emitting element through the ambient light intake area and are transmitted to the ambient light reflection area. After being reflected at least twice by the ambient light reflection area, the light rays are transmitted to the visual light emission area and emitted from the visual light emission area to form visual light.

2. The light-emitting element as described in claim 1, characterized in that, The thickness of the light-emitting element in the optical axis direction is A, where A ≥ 20 mm.

3. The light-emitting element as described in claim 1, characterized in that, The ambient light intake area, the ambient light reflection area, and the visual light output area each include at least one polygonal plane formed on the light output element, and the number of sides of each polygonal plane is n, where 3 ≤ n ≤ 8.

4. The light-emitting element as described in claim 1, characterized in that, The ambient light reflection area includes at least a primary reflection area and a secondary reflection area arranged sequentially along the visual light path.

5. The light-emitting element as described in claim 4, characterized in that, The ambient light intake area, the primary reflection area, the secondary reflection area, and the visual light output area form a first line segment, a second line segment, a third line segment, and a fourth line segment respectively on the longitudinal section of the light output element. The first line segment intersects with the extension of the second line segment to form a first intersection point, and the third line segment intersects with the extension of the fourth line segment to form a second intersection point. The line connecting the first intersection point and the second intersection point is a dividing line. Wherein, the first line segment and the fourth line segment form an angle α with the dividing line, and the second line segment and the third line segment form an angle β with the dividing line.

6. The light-emitting element as described in claim 5, characterized in that, The light-emitting element is made of PC, with 10°≤α≤43° and 24°≤β≤65°. Alternatively, the material of the light-emitting element is PMMA, with 12°≤α≤56° and 21°≤β≤63°; Alternatively, the light-emitting element may be made of glass, with a value of 10°≤α≤61° and 20°≤β≤57°.

7. The light-emitting element as described in claim 4, characterized in that, The secondary reflection region includes several secondary reflection sub-planes that are offset along the optical axis.

8. The light-emitting element as described in claim 1, characterized in that, It also includes a reflection enhancer, the reflective surface of which is attached to at least a portion of the ambient light reflection area.

9. The light-emitting element as described in claim 8, characterized in that, The reflection enhancement element is disposed on the light-incident side of the light-emitting element, and the reflection enhancement element covers at least a portion of the light-emitting element.

10. An optical module, characterized in that, Includes a light source, primary optical elements, and a light-emitting element as described in any one of claims 1 to 9; The light emitted from the light source is converged by the primary optical element and then emitted by the light-emitting element to form the main light pattern.

11. A vehicle light, characterized in that, Includes the optical module as described in claim 10.

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