A thick-walled optical system
Patent Information
- Application Number
- CN202522596132.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-08
AI Technical Summary
Traditional thick-walled optical guide materials are heavy and take up a lot of space, which affects the performance of vehicle lights and makes it difficult to ensure optical effects while saving weight and space.
The diffuser sheet, made of two-color injection molding and a clear layer of colorless and transparent PC material, combined with an LED light source, disperses the light through the diffuser sheet and achieves a three-dimensional transparent effect through the clear layer, eliminating the need for a light concentrator structure and reducing material usage and weight.
It achieves the goal of reducing the weight of the headlights while maintaining or improving the optical effect, saving space and reducing the power consumption of the whole vehicle, and adapting to more LED layout schemes.
Smart Images
Figure CN224932554U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting and discloses a thick-walled optical system. Technical Background
[0002] The concept of "automotive lightweighting" originated in motorsport because its main advantage is improved control of the race car by reducing weight, resulting in higher acceleration while maintaining the same engine power. With the continuous development of the automotive industry, automotive lightweighting is no longer limited to motorsport and has been widely applied to the conventional automotive sector. For new energy vehicles, a 10% weight reduction can increase the driving range by 5%-6%, making lightweighting a crucial technological path for energy conservation, reduced emissions, and increased driving range in new energy vehicles. Given this situation, weight reduction in vehicle lights is imperative.
[0003] For automotive lights, the traditional thick-walled light guide 5 is a monochrome injection molded transparent part made of PC / PMMA material. LED particles are arranged at the light-incident end of the thick wall. Light passes through a precisely designed microprism (concentrator 4) to control the light emission angle. The thick-walled light guide 5 internally transmits light through total internal reflection. (See attached diagram for specific structural details.) Figure 1 Traditional thick-walled light guides are large in size and depth, taking up a lot of space, in order to achieve uniform effect; the thick walls also make them heavy, affecting the overall performance of the lamp.
[0004] Therefore, a new type of thick-walled optical system is needed to save the overall weight of the luminaire. Utility Model Content
[0005] The present invention aims to provide a thick-walled optical system that saves the overall weight of the lamp.
[0006] To achieve the above objectives, the present invention adopts the following specific technical solution: A thick-walled optical system includes a two-color injection-molded diffuser and a clear layer. The diffuser has a pattern on the side facing the light source, and the clear layer has a pattern on the side of the diffuser away from the light source. The diffuser is a color-dispersing material, and the clear layer is a colorless and transparent PC material.
[0007] Furthermore, the scattering sheet is made of milky white PC material.
[0008] Furthermore, it also includes a housing and an LED light source placed inside the housing, with the diffuser and clear layer fixed inside the housing.
[0009] This utility model has the following beneficial effects: Traditional thick-walled single-color injection molding is replaced by dual-color injection molding. Traditional thick-walled designs require a concentrator, which limits their design. This new type of thick-walled design eliminates the need for a concentrator structure, saving space and facilitating installation. The novel thick-walled design is formed by dual-color injection molding of a scattering material and a transparent, colorless PC material. The light from the LED particles achieves uniform illumination after passing through the scattering material, and then passes through the transparent layer of the thick-walled design to achieve a three-dimensional, transparent, thick-walled appearance. This saves internal space, reduces product weight, and ensures uniform illumination. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of a thick-walled optical guide in the prior art; Figure 2 This is a schematic diagram of the structure of the thick-walled optical system disclosed in this utility model. Detailed Implementation
[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and processes. However, the scope of protection of the present invention is not limited to the following embodiments.
[0012] A thick-walled optical system includes a two-color injection-molded diffuser 1 and a clear layer 2. The diffuser 1 has a pattern on the side facing the light source, and the clear layer 2 is disposed and fixed on the side of the diffuser 1 away from the light source. The clear layer 2 also has a pattern on the side away from the light source. In other words, the two-color injection-molded thick-walled optical system has patterns on both sides. The diffuser 1 is a color-dispersing material, and the clear layer 2 is a colorless and transparent PC material.
[0013] This embodiment of the thick-walled optical system prioritizes both performance and weight reduction, employing a dual-color injection molding process using both diffusing and transparent materials. The thick-walled structure is formed by dual-color injection molding of diffusing and transparent materials. Optical patterns are added to the inner side of the diffusing sheet of the thick-walled structure, on the side facing the light source, to disperse the LED light. These patterns achieve the desired aesthetic effect. The light from the LED particles achieves a uniform emission effect after passing through the diffusing material, and then passes through the transparent layer of the thick-walled structure to achieve a three-dimensional, transparent, thick-walled aesthetic effect. This saves internal space, reduces product weight, and ensures uniform illumination. After passing through the diffusing material and the patterned transparent layer 2 on the outer side, the LED light achieves the same or better optical effect as the thick-walled structure, eliminating the need for the LED concentrator portion of the thick-walled structure, reducing material usage and component weight, and saving internal space. It can meet the special styling requirements of the thick-walled structure, such as flat or transparent designs, while maintaining uniform illumination. It saves internal space in the lamp, allowing for more LED arrangement options, and reduces the overall weight of the lamp, thus lowering the overall vehicle power consumption.
[0014] The shape of the clear layer is unlimited, and the design can be adjusted as needed, which is an advantage over traditional thick-walled layers.
[0015] The diffuser sheet 1 is made of milky white PC material, such as Covestro's grade 2407. The preferred material for the transparent layer is Covestro's grade LED2245.
[0016] It also includes a housing and an LED light source 3 placed inside the housing, with a diffuser 1 and a clear layer 2 fixed inside the housing.
[0017] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A thick-walled optical system, characterized in that, It includes a two-color injection molded diffuser sheet (1) and a clear layer (2). The diffuser sheet (1) has a pattern on the side facing the light source, and the clear layer (2) is provided on the side of the diffuser sheet (1) away from the light source. The clear layer (2) has a pattern on the side of the clear layer (2) away from the light source. The diffuser sheet (1) is a color-scattering material, and the clear layer (2) is a colorless and transparent PC material.
2. The thick-walled optical system according to claim 1, characterized in that, The scattering sheet (1) is made of milky white PC material.
3. The thick-walled optical system according to claim 1, characterized in that, It also includes a housing and an LED light source (3) placed inside the housing, wherein the diffuser (1) and the clear layer (2) are fixed inside the housing.