CN113251380A - Car light optical element, car light module, car light and vehicle - Google Patents
Car light optical element, car light module, car light and vehicle Download PDFInfo
- Publication number
- CN113251380A CN113251380A CN202011280973.7A CN202011280973A CN113251380A CN 113251380 A CN113251380 A CN 113251380A CN 202011280973 A CN202011280973 A CN 202011280973A CN 113251380 A CN113251380 A CN 113251380A
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- Prior art keywords
- light
- optical element
- passing
- vehicle lamp
- gathering
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
Abstract
The invention relates to a vehicle lighting device, and discloses a vehicle lamp optical element which comprises a light-gathering part (1) and a light-passing part (2) which are integrally formed, wherein the light-gathering part (1) and the light-passing part (2) are formed parts made of different materials, the heat deformation temperature of the light-gathering part (1) is higher than that of the light-passing part (2), an interface (4) is formed between the light-gathering part (1) and the light-passing part (2), and the light-gathering part (1) can gather light rays and enable the light rays to be projected after passing through the light-passing part (2). In addition, the invention also discloses a car lamp module, a car lamp and a car. The optical element of the vehicle lamp can give consideration to both cost and high temperature resistance.
Description
Technical Field
The present invention relates to a vehicle lighting device, and particularly to a lamp optical element. In addition, the invention also relates to a vehicle lamp module, a vehicle lamp and a vehicle comprising the vehicle lamp optical element.
Background
In order to ensure the illumination intensity, LEDs with different numbers can be installed in the car lamp, after the car lamp is used for a long time, the heat productivity is quite large, if the heat dissipation measures are poor, the performance of the car lamp can be seriously influenced, even the car lamp is damaged, and great hidden dangers are brought to traffic safety.
Referring to fig. 1 and 2, in an optical element of a vehicle lamp in the prior art, a light-gathering cup 1a and a light source 2a are arranged close to each other, and a large amount of heat is generated after the light source 2a is turned on, so that the light-gathering cup 1a is deformed or melted by heat, and the light shape emitted by the vehicle lamp is affected.
To avoid the above problems, those skilled in the art mainly adopt the following solutions:
(1) the distance between the light-gathering cup 1a and the light source 2a is set to be a large value, generally at least 0.5mm, and some of the distances even reach 1-2 mm, so that the light source 2a is far away from the light-gathering cup 1a as far as possible, but the optical efficiency of the car lamp is lost due to the large distance between the light-gathering cup 1a and the light source 2 a;
(2) referring to fig. 3, one end of the light collection cup 1a close to the light source 2a is partially cut, and the cut portion 3a is removed, so that the light collection cup 1a and the light source 2a keep a certain distance, but the cut light collection cup 1a also reduces the utilization rate of the optical element of the vehicle lamp to light, so that the optical efficiency of the vehicle lamp is damaged.
In view of the above, a new optical element for a vehicle lamp is needed.
Disclosure of Invention
The present invention provides an optical element for a vehicle lamp, which can achieve both cost and high temperature resistance.
The second aspect of the present invention is to provide a vehicle lamp module, which can achieve both cost and high temperature resistance of the module.
A third aspect of the present invention is to provide a vehicle lamp that can achieve both cost and high temperature resistance of the vehicle lamp.
The technical problem to be solved by the fourth aspect of the present invention is to provide a vehicle lamp which can achieve both cost and high temperature resistance of the lamp.
In order to solve the above technical problems, an aspect of the present invention provides an optical element for a vehicle lamp, including a light-gathering portion and a light-passing portion, which are integrally formed, wherein the light-gathering portion and the light-passing portion are formed of different materials, and a thermal deformation temperature of the light-gathering portion is higher than a thermal deformation temperature of the light-passing portion, an interface is formed between the light-gathering portion and the light-passing portion, and the light-gathering portion can gather light and project the light after passing through the light-passing portion.
Optionally, the interface is a flat surface or a curved surface.
Specifically, the light-gathering part is a silica gel molding part, and the light-passing part is a plastic molding part.
Alternatively, the light-passing portion may be a straight-row solid optical conductor extending in the front-rear direction, or the light-passing portion may be a bent solid optical conductor, and a reflection surface may be formed at a bent portion of the light-passing portion.
As a specific structural form, the light-condensing part is of a light-condensing cup structure.
Typically, the light condensing portion and the light passing portion are insert-molded integral parts or two-color injection-molded integral parts.
As a specific configuration, a plurality of the light-condensing portions are formed at the rear end of the light-passing portion, a plurality of the interfaces are connected with each other and form a smooth curved surface or plane, or a plurality of the interfaces are arranged in a staggered manner with a step.
Preferably, a lens portion is formed at a front end of the light-passing portion.
Further preferably, the plurality of light condensing portions are formed integrally.
The invention also provides a car lamp module, which comprises a light source and the car lamp optical element in any one of the technical schemes of the first aspect, wherein the light source and the light-gathering part are arranged in a one-to-one correspondence manner.
The third aspect of the invention further provides a vehicle lamp, which comprises the vehicle lamp module in the technical scheme of the second aspect.
The fourth aspect of the present invention further provides a vehicle including the lamp in the third aspect.
In the basic technical scheme of the invention, the optical element of the vehicle lamp is provided with a light-gathering part and a light-passing part which are made of two different materials, and the heat deformation temperature of the light-gathering part is greater than that of the light-passing part. Because the light-gathering part is closer to the light source, the light-gathering part is easy to be thermally deformed and the light-passing part is not basically deformed, the optical element of the vehicle lamp is creatively divided into two parts, the light-gathering part is made of a material with higher cost and higher thermal deformation temperature, the light-passing part is made of a material with lower cost and relatively lower thermal deformation temperature, the cost and the high-temperature resistance of the optical element of the vehicle lamp are taken into consideration, the light-gathering part is not easy to be thermally deformed, and the stability of the emergent light shape is ensured; in addition, in the preferred technical scheme of the invention, an interface is formed between the light-gathering part and the light-passing part, two sides of the interface are made of different materials, the refractive indexes of the two materials are different, so that the interface has the function of secondary light distribution, light is deflected from the light-gathering part to enter the light-passing part, the irradiation direction of the light can be changed on the interface, and the functions of adjusting the light shape angle and improving the uniformity of the light shape are realized, so that the optical element of the vehicle lamp can realize secondary light distribution and improve the freedom degree of light distribution.
Further advantages of the present invention, as well as the technical effects of preferred embodiments, are further described in the following detailed description.
Drawings
FIG. 1 is a schematic diagram of a prior art optical element for a vehicle lamp;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic diagram of a light-gathering cup of another prior art optical element for a vehicle lamp;
FIG. 4 is a schematic structural view of a first embodiment of an optical element for a vehicle lamp according to the present invention;
FIG. 5 is a sectional view taken along line B-B of FIG. 4;
FIG. 6 is a schematic structural view of a second embodiment of the optical element for a vehicle lamp according to the present invention;
FIG. 7 is a cross-sectional view of FIG. 6;
FIG. 8 is a schematic structural view of a third embodiment of an optical element for a vehicular lamp according to the present invention;
FIG. 9 is a cross-sectional view of FIG. 8;
FIG. 10 is a schematic structural view of a fourth embodiment of an optical element for a vehicular lamp according to the present invention;
FIG. 11 is a second schematic structural view of a fourth embodiment of the optical element for a vehicular lamp according to the present invention, wherein the light condensing portion and the light transmitting portion are assumed to be separated, and in fact, they are integrally formed and cannot be separated without damage;
FIG. 12 is a third schematic structural view of a fourth embodiment of the optical element of the vehicular lamp according to the present invention;
FIG. 13 is a schematic structural view of an embodiment of a light-condensing portion of the optical element for a vehicular lamp according to the present invention;
FIG. 14 is a schematic structural view of a fifth embodiment of an optical element for a vehicular lamp according to the present invention;
fig. 15 is a schematic structural view of a sixth embodiment of the optical element for a vehicle lamp according to the present invention.
Description of the reference numerals
1 light-gathering part and 2 light-passing part
22 reflecting surface 3 lens part
4 interface surface
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description is provided for purposes of illustration and explanation and is not intended to limit the scope of the invention.
It is to be understood that, as shown in fig. 4, based on the optical element for a vehicle lamp, when it is normally installed in the vehicle lamp, in the light emitting direction, "front" means the end of the light-passing part 2, and "rear" means the end of the light-condensing part 1, that is, the light passing portion 2 is located on the front side of the light converging portion 1, the light converging portion 1 is located on the rear side of the light passing portion 2, "up" means above in the light outgoing direction, "down" means below in the light outgoing direction, in the actual mounting situation, the terms of orientation, which are based on the orientation or positional relationship shown in the drawings, should be interpreted in accordance with the actual mounting state in conjunction with the host vehicle lamp optical element itself, merely for convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be noted that, for the requirements of vehicle lamp modeling, at least one inner lens may be disposed between the vehicle lamp optical element and the outer lens, and the inner lens may be a common plastic piece with equal wall thickness, only for representing the required modeling, or a light distribution plastic piece with a light distribution function on the back.
Referring to fig. 4 and 5, an optical element for a vehicle lamp according to a basic embodiment of the present invention includes a light condensing portion 1 and a light transmitting portion 2 which are integrally formed, the light condensing portion 1 and the light transmitting portion 2 are formed of different materials, and a thermal deformation temperature of the light condensing portion 1 is higher than a thermal deformation temperature of the light transmitting portion 2, an interface 4 is formed between the light condensing portion 1 and the light transmitting portion 2, and the light condensing portion 1 can condense light and project the light after passing through the light transmitting portion 2. The optical element of the car lamp can be used in a car headlamp module and also can be used in a car signal indicator lamp module.
In the prior art, because the light-gathering part 1 is closer to the light source, the light-gathering part 1 is more easily thermally deformed, and the light-passing part 2 is far from the light source and basically cannot be deformed. The light gathering part 1 is made of a material with high cost and high thermal deformation temperature, the light passing part 2 is made of a material with low cost and low thermal deformation temperature, and the cost and the high-temperature resistance of the vehicle lamp optical element are both considered.
The optical element of the car lamp can be integrally formed by insert injection, the light-gathering part 1 is firstly produced, and the light-gathering part 1 is integrally formed with the light-transmitting part 2 as an insert; or directly adopts double-shot injection molding and integral molding. The positions where the light condensing part 1 and the light transmitting part 2 are mutually attached form an interface 4, two sides of the interface 4 are made of different materials, and the refractive indexes of the two materials are different, so that the interface 4 has the function of secondary light distribution, namely, the light distribution surface of the vehicle lamp optical element is increased, light is deflected from the light condensing part 1 to enter the light transmitting part 2, the light irradiation direction can be changed on the interface 4, and the purposes of light shape angle allocation and light shape uniformity improvement are achieved, so that the vehicle lamp optical element provided by the invention can achieve secondary light distribution and improve the degree of freedom of light distribution; in addition, the optical element of the car lamp has a simple structure, meets the process requirements of insert integrated molding or double-color injection molding integrated molding, and is suitable for mass production.
Alternatively, the interface 4 may be flat or curved or otherwise shaped to form the desired optical shape. Specifically, referring to fig. 4 to 9, the interface 4 may be a forward convex curved surface, a flat surface, or a backward concave curved surface.
Specifically, the thermal deformation temperature of silicone is high but expensive, and therefore, the light-condensing portion 1, which has a small volume and is close to the light source, uses a silicone material; since general plastics have a low heat distortion temperature but are inexpensive, plastics such as Polycarbonate (PC) and polymethyl methacrylate (PMMA) are used for the light transmitting portion 2 having a large volume ratio and a large distance from the light source, thereby achieving both cost and heat resistance of the optical element of the vehicle lamp.
Alternatively, referring to fig. 12, the light transmitting portion 2 is a straight solid light conductor extending in the front-back direction, and light emitted from the light source is converged by the light converging portion 1 and then emitted to the light transmitting portion 2; alternatively, referring to fig. 14, the light transmitting portion 2 is a bent solid optical conductor, a reflecting surface 22 is formed at the bent portion of the light transmitting portion 2, light emitted from the light source is converged by the light collecting portion 1 and then emitted upward to the reflecting surface 22, and the light is reflected forward by the reflecting surface 22 and then emitted from the light emitting surface of the light transmitting portion 2, so as to form an approximately L-shaped light path as a whole. It can be understood that fig. 12 and 14 only show two preferred structural forms of the light-passing portion 2, and the structure of the light-passing portion 2 and the relative position between the light-passing portion 2 and the light-condensing portion 1 can also be flexibly set according to the shape requirement of the vehicle lamp, so that the shape of the vehicle lamp is more novel and changeable, and the requirement of a user on the personalized and scientific vehicle lamp shape is met.
As a specific structural form, referring to fig. 5, the light-gathering portion 1 is a light-gathering cup structure, an inner concave cavity is disposed at one end of the light-gathering portion 1 away from the light-passing portion 2, the inner concave cavity includes a front light-entering surface and a side light-entering surface, the front light-entering surface is a curved surface protruding to one side away from the light-passing portion 2, the side light-entering surface is a curved surface gradually decreasing from one end away from the light-passing portion 2 to one end aperture close to the light-passing portion 2, and an external profile surface of the light-gathering portion 1 is a curved surface gradually increasing from one end away from the light-passing portion 2 to one end aperture close to the light-passing portion 2. The opening of the concave cavity faces the light source to receive the light emitted by the light source, the light-gathering part 1 can refract part of the light emitted by the light source to the light-passing part 2 through the front light-in surface of the concave cavity, the side light-in surface of the concave cavity can refract other light emitted by the light source, and the refracted light is reflected to the light-passing part 2 through the external profile surface, so that the full utilization of the light emitted by the light source can be basically realized, and the purpose of improving the light beam utilization rate of the light source can be achieved. Of course, the light collecting unit 1 of the present invention is not limited to the light collecting cup structure, and the light collecting unit 1 may also be a curved structure protruding backward or another structural form capable of collecting light.
Referring to fig. 10 to 14, in order to improve the brightness of the vehicle lamp and meet the requirements of users on the personalized and scientific vehicle lamp shape, a plurality of light-gathering parts 1 are formed at the rear end of the light-transmitting part 2, and optionally, a plurality of interfaces 4 are connected with each other and form a continuous and smooth curved surface or plane, so that the structures of the light-gathering parts 1 and the light-transmitting part 2 are simplified, the production efficiency is improved, and the production cost is reduced; or, more preferably, referring to fig. 11, the plurality of interfaces 4 are arranged in a staggered manner with drop heights, so that the light distribution is more flexible to better perform secondary light distribution by adjusting the shape and the inclination angle of each interface 4. Furthermore, a plurality of concave curved surfaces and/or convex curved surfaces are formed on each interface 4, so that the flexibility of light distribution and the uniformity of light shape can be further improved.
Referring to fig. 15, the front end of portion 2 that leads to is formed with lens portion 3, and light concentration portion 1, portion 2 and the 3 integrated into one piece of lens portion that lead to for car light optical element's the degree of integrating is higher, and the space occupies that the volume is littleer, and the structure is compacter, and the miniaturization degree is high, can also avoid the assembly error between each optical element in the assembling process, improves the assembly precision, reduces the degree of difficulty of adjusting luminance, thereby can improve optical accuracy.
Preferably, referring to fig. 13, the plurality of light collecting units 1 are formed integrally, or the plurality of light collecting units 1 may be separately provided and formed integrally with the light passing unit 2, respectively.
The optical element for the vehicle lamp comprises a light-gathering part 1 and a light-passing part 2, wherein an interface 4 is formed between the light-gathering part 1 and the light-passing part 2, the light-gathering part 1 is made of silica gel materials, the light-passing part 2 is made of PC materials, and the optical element for the vehicle lamp is integrally injection-molded by adopting a two-color injection molding process.
The vehicle lamp module comprises a light source and the vehicle lamp optical element in any one of the technical schemes of the first aspect, wherein the light source corresponds to the light-gathering part 1 one by one and is arranged at one end, away from the light-passing part 2, of the light-gathering part 1, and the light source can be an LED chip or an OLED chip and the like. Because the heat distortion temperature of the light-gathering part 1 of the optical element of the vehicle lamp is higher, the distance between the light source and the light-gathering part 1 can be set to be smaller, and the distance between the light source and the light-gathering part 1 is less than 0.5mm, such as 0.3mm, 0.25mm, 0.2mm, 0.15mm, 0.1mm and even smaller, so that the light rays are fully collected and utilized. In addition, the vehicle lamp module comprises the vehicle lamp optical element in the technical scheme of the first aspect, so that the vehicle lamp module at least has all the beneficial effects brought by the technical scheme of the vehicle lamp optical element, and the details are not repeated herein.
The vehicle lamp of the present invention includes the vehicle lamp module in the second aspect, which may include the vehicle lamp module in the foregoing embodiment, so that at least all the advantages brought by the technical solutions of the embodiments of the vehicle lamp module are provided.
The vehicle of the present invention, including the lamp in the third aspect, may include the lamp in the foregoing embodiment, so that at least all the advantages brought by the embodiments of the lamp are provided.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (12)
1. The optical element is characterized by comprising a light gathering part (1) and a light passing part (2) which are integrally formed, wherein the light gathering part (1) and the light passing part (2) are formed parts made of different materials, the heat deformation temperature of the light gathering part (1) is higher than that of the light passing part (2), an interface (4) is formed between the light gathering part (1) and the light passing part (2), and the light gathering part (1) can gather light and enable the light to pass through the light passing part (2) and then be projected out.
2. Optical element for a vehicle lamp according to claim 1, characterized in that said dividing surface (4) is plane or curved.
3. The optical element for a vehicular lamp according to claim 1, wherein the light-condensing portion (1) is a silicone molded portion, and the light-passing portion (2) is a plastic molded portion.
4. The vehicular lamp optical element according to claim 1, wherein the light-passing portion (2) is a straight row type solid light conductor extending in the front-rear direction, or
The light-passing part (2) is a bent solid optical conductor, and a reflecting surface (22) is formed at the bent part of the light-passing part (2).
5. The vehicle lamp optical element according to claim 1, wherein the light-condensing portion (1) is a light-condensing cup structure.
6. The optical element for a vehicle lamp according to claim 1, wherein the light-condensing portion (1) and the light-transmitting portion (2) are an insert-molded integral piece or a two-color injection-molded integral piece.
7. The optical element for a vehicular lamp according to any one of claims 1 to 6, wherein the rear end of the light-passing portion (2) is formed with a plurality of the light-condensing portions (1), a plurality of the division surfaces (4) are connected to each other and form a smooth curved surface or flat surface, or a plurality of the division surfaces (4) are arranged staggered with a step.
8. The optical element for a vehicular lamp according to claim 7, wherein a lens portion (3) is formed at a front end of the light-passing portion (2).
9. The optical element for a vehicle lamp according to claim 7, wherein a plurality of the light-condensing portions (1) are formed integrally.
10. A vehicular lamp module characterized by comprising a light source and the vehicular lamp optical element according to any one of claims 1 to 9, the light source being disposed in one-to-one correspondence with the light-condensing portion (1).
11. A vehicular lamp comprising the vehicular lamp module according to claim 10.
12. A vehicle characterized by comprising the lamp according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280973.7A CN113251380A (en) | 2020-11-16 | 2020-11-16 | Car light optical element, car light module, car light and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280973.7A CN113251380A (en) | 2020-11-16 | 2020-11-16 | Car light optical element, car light module, car light and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113251380A true CN113251380A (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011280973.7A Pending CN113251380A (en) | 2020-11-16 | 2020-11-16 | Car light optical element, car light module, car light and vehicle |
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| CN (1) | CN113251380A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111559A (en) * | 2021-03-17 | 2022-09-27 | 华域视觉科技(上海)有限公司 | Light guide and vehicle lamp module |
-
2020
- 2020-11-16 CN CN202011280973.7A patent/CN113251380A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111559A (en) * | 2021-03-17 | 2022-09-27 | 华域视觉科技(上海)有限公司 | Light guide and vehicle lamp module |
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