Optical system and vehicle lamp using the optical system
By using a combination of light-transmitting elements, optical films, and light-distributing lenses in the automotive lighting optical system, the problems of light flux loss and increased energy consumption have been solved, achieving efficient light propagation and low-cost production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-06-30
AI Technical Summary
When existing automotive lighting optical systems use plastic injection-molded parts with diffusion effects, there is a significant loss of luminous flux, resulting in insufficient high beam illumination distance. Furthermore, this increases the number of light sources and energy consumption, affecting the lifespan and cost of the headlights.
It adopts a combination structure of light-transmitting element, optical film and light distribution lens. The optical microstructure on the optical film deflects and diffuses the light, and the collimated light incident structure improves the light transmittance and reduces the light flux loss. The light propagation path is optimized by light guide strip.
It improves light transmittance, reduces luminous flux loss, avoids energy consumption and heat generation problems caused by increasing the number of light sources, and at the same time reduces production costs and product defect rate.
Smart Images
Figure CN224434192U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle lighting technology, and in particular to an optical system and a vehicle lighting system using the optical system. Background Technology
[0002] The optical design of automotive lighting needs to balance functionality, aesthetics, safety, regulatory compliance, and manufacturing feasibility. Therefore, plastic injection-molded parts with a diffusion effect are mostly used in front of the light source. Functionally, this ensures uniform light distribution and avoids glare or blinding spots. Aesthetically, it can hide the grainy appearance of the internal light source, giving the headlights a continuous and smooth lighting effect (such as a full-width taillight), enhancing the overall design aesthetics of the vehicle.
[0003] Research and usage have revealed that while plastic injection-molded parts with a diffusion effect can achieve uniform illumination by scattering light, they also result in a loss or waste of luminous flux (typically a 10%–30% reduction), especially with highly directional LED light sources, which may lead to insufficient high-beam illumination distance. Furthermore, to compensate for this luminous flux loss and achieve the required brightness according to regulations, it is usually necessary to increase the power or number of light sources, leading to increased energy consumption and heat generation in the lamps, affecting lamp lifespan and thermal management design. In addition, plastic injection-molded parts with a diffusion effect require high precision in mold processing and stability in the injection molding process, affecting product yield and increasing costs.
[0004] Therefore, avoiding the above-mentioned problems is a technical challenge that needs to be overcome for optical systems used in automotive lights. Utility Model Content
[0005] The primary objective of this invention is to provide an optical system that addresses the technical problem of optimizing its overall performance.
[0006] The second objective of this invention is to provide a vehicle lamp that addresses the technical problem of optimizing the overall performance of the optical system it employs.
[0007] The optical system of this invention is implemented as follows:
[0008] An optical system comprising:
[0009] A light-transmitting component, which has a light-incident surface and a light-exit surface;
[0010] A light-emitting body, suitable for emitting light towards a transparent plastic component;
[0011] An optical film is disposed on the light-incident or light-exiting surface of a light-transmitting element, and the optical film has optical microstructures on the side wall facing the light-emitting body that are suitable for deflecting light.
[0012] A light distribution lens is placed on the light-emitting side of the light-transmitting element so that the light emitted by the light-emitting body is refracted and diffused by the light-transmitting element and the optical film before being emitted from the light distribution lens.
[0013] In an optional embodiment of this invention, the optical film is fixed to the light-transmitting component by welding or adhesive bonding.
[0014] In an optional embodiment of this invention, the light-emitting body is provided with at least three light sources arranged at intervals along a straight line.
[0015] In an optional embodiment of this invention, the optical film is disposed on the light-emitting surface of the light-transmitting element; and
[0016] The light-transmitting element has at least three collimated light-incident structures designed on its light-incident surface to match each light source in a one-to-one manner.
[0017] In an optional embodiment of this invention, the collimated incident light structure employs a concentrator.
[0018] In an optional embodiment of this invention, the optical film is disposed on the light-incident surface of the light-transmitting element.
[0019] In an optional embodiment of this utility model, a light guide strip is further provided between the light-emitting body and the light-transmitting component.
[0020] In an optional embodiment of this utility model, the light-emitting body is disposed on one end of the light guide strip in the width direction so that the light emitted by the light-emitting body propagates along the length direction of the light guide strip.
[0021] In an optional embodiment of this utility model, the light-transmitting element has a main body portion for forming a light-incident surface on the side end face facing the light guide strip, and a pair of extension portions disposed on both sides of the main body portion and symmetrically arranged with respect to the light guide strip; and
[0022] The light guide strip is located between a pair of extensions to face the light-incident surface of the light-transmitting element.
[0023] The vehicle light of this utility model is implemented as follows:
[0024] A vehicle light, comprising: the aforementioned optical system.
[0025] By adopting the above technical solution, this utility model has the following beneficial effects: The optical system of this utility model and the vehicle lamp using the optical system, through the cooperation of the light-transmitting component and the optical film, allow the light emitted by the light-emitting body to be deflected and diffused by the light-transmitting component and the optical film before being emitted from the light distribution lens, thereby improving the light transmittance and greatly reducing the loss of luminous flux. Moreover, it does not require increasing the number of light sources, thus avoiding the problem of increased lamp energy consumption and heat generation caused by increasing the number of light sources in the prior art. Compared with the plastic injection-molded parts with diffusion effect in the prior art, the light source film is lighter and easier to process, resulting in a lower product defect rate, thereby reducing the total production cost. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the optical system in Example 1;
[0027] Figure 2 This is a schematic diagram of the structure of the optical film used in the optical systems of Examples 1 and 2.
[0028] Figure 3 This is a schematic diagram of the first-view structure of the optical system in Example 2.
[0029] Figure 4 This is a schematic diagram of the second-view structure of the optical system in Example 2.
[0030] In the diagram: 1. Housing; 2. Light-emitting element; 3a. Light-transmitting component; 3b. Optical film; 4. Light distribution lens; 5. Optical microstructure; 6. Light guide strip; 7. Support; 8. Collimated light structure. Detailed Implementation
[0031] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0032] Example 1:
[0033] Please see Figure 1 and Figure 2 As shown, this embodiment provides an optical system including: a light-transmitting element 3a, a light-emitting element 2, an optical film 3b, and a light-distributing lens 4 used in conjunction, wherein the light-distributing lens 4 is detachably coupled to a housing 1 to form a cavity for accommodating the light-transmitting element 3a, the light-emitting element 2, and the optical film 3b.
[0034] Specifically, the first is the light-transmitting element 3a, which can be made of plastic material and has a light-incident surface and a light-exit surface; regarding the shape of the light-transmitting element 3a, it can be designed as a regular shape or an irregular shape, and this embodiment does not make an absolute limitation on this.
[0035] Secondly, there is a light-emitting element 2, which is suitable for emitting light towards the plastic light-transmitting component 3a. Next is an optical film 3b, which is disposed on the light-incident or light-exit surface of the light-transmitting component 3a, and the sidewall of the optical film 3b facing the light-emitting element 2 has optical microstructures 5 suitable for deflecting light; the regular arrangement of the texture of the optical microstructures 5 here can play a role in directional deflection of light. It should be noted that the optical film 3b here can be fixed to the light-transmitting component 3a by, for example, but not limited to, welding or adhesive. Furthermore, in this embodiment, the optical film 3b can be optionally processed by, for example, but not limited to, roller imprinting the texture of the optical microstructures 5, resulting in a first-pass yield rate far higher than that of traditional injection molding.
[0036] Furthermore, it should be noted that the optical microstructure 5 in this embodiment is a nanoscale optical microstructure 5, and this optical microstructure 5 typically achieves optical transmission through micro-geometric design. Microstructures generally include surface microstructures and solid microstructures. Surface microstructures typically refer to films with etched textures, while solid microstructures typically refer to microstructures with scattering effects using reflective materials. The optical microstructure 5 typically has multiple diffusion angles, so that incident light will undergo refraction, reflection, and scattering when it enters the optical microstructure 5, which can convert point light sources or linear light sources into surface light sources, increasing the uniformity of light and the illumination area, and exhibiting good diffusion performance.
[0037] Finally, the light distribution lens 4 is disposed on the light-emitting surface side of the light-transmitting element 3a, so that the light emitted by the light-emitting body 2 is deflected and diffused by the light-transmitting element 3a and the optical film 3b and then emitted from the light distribution lens 4.
[0038] Based on the above structure, and referring to the accompanying drawings, here is a specific optional implementation method:
[0039] An optical film 3b is disposed on the light-emitting surface of the light-transmitting element 3a; at least three light sources are arranged at linear intervals on the light-emitting element 2. At least three collimating light-incident structures 8 are designed on the light-incident surface of the light-transmitting element 3a, which are matched one-to-one with each light source. The collimating light-incident structure 8 here may be a condenser.
[0040] In summary, the optical system of this embodiment, through the cooperation of the light-transmitting element 3a and the optical film 3b, allows the light emitted by the light-emitting body 2 to be deflected and diffused by the light-transmitting element 3a and the optical film 3b before being emitted from the light distribution lens 4, thereby improving the light transmittance and greatly reducing the loss of luminous flux. Moreover, it does not require increasing the number of light sources, thus avoiding the problem of increased lamp energy consumption and heat generation caused by increasing the number of light sources in the prior art. Compared with the plastic injection-molded parts with diffusion effects in the prior art, the light source film is lighter and easier to process, resulting in a lower product defect rate, thereby reducing the total production cost.
[0041] Example 2:
[0042] Please see Figures 2 to 4 As shown, based on the optical system of Embodiment 1, the optical film 3b of the optical system provided in this embodiment is disposed on the light-incident surface of the light-transmitting element 3a. Based on this, a light guide strip 6 is also provided between the light-emitting element 2 and the light-transmitting element 3a in this embodiment.
[0043] Based on the above structure, the light-emitting body 2 is disposed on one side of the light guide strip 6 in the width direction so that the light emitted by the light-emitting body 2 propagates along the length direction of the light guide strip 6.
[0044] It should be noted that the light guide strip 6 is fixed to a bracket 7, which is connected to the housing 1. The overall bracket 7 has a roughly U-shaped cross-section along the width of the light guide strip 6, with the opening of the U-shape facing the optical film 3b on the light-incident surface of the light-transmitting element 3a. The light guide strip 6 is embedded inside the bracket 7. The bracket 7 is made of a light-shielding material. For the light guide strip 6 embedded inside the bracket 7, the light entering from one end of the light guide strip 6 in the width direction is directed to the optical film 3b through the U-shaped opening facing the optical film 3b.
[0045] Furthermore, it should be noted that the light-transmitting member 3a has a main body portion for forming a light-incident surface on the side end face facing the light guide strip 6, and a pair of extension portions provided on both sides of the main body portion and arranged symmetrically with respect to the light guide strip 6; and the light guide strip 6 is located between the pair of extension portions to face the light-incident surface of the light-transmitting member 3a.
[0046] In summary, for the optical system of this embodiment, using an optical film 3b instead of a traditional diffuser plastic injection molded part can improve the light source efficiency while reducing power consumption.
[0047] Example 3:
[0048] Based on the optical system of Embodiment 1 or Embodiment 2, this embodiment provides a vehicle lamp, including: the optical system of Embodiment 1.
[0049] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
[0050] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0052] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0053] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0054] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
Claims
1. An optical system, characterized in that, At least including: A light-transmitting component, which has a light-incident surface and a light-exit surface; A light-emitting body, suitable for emitting light towards a transparent plastic component; An optical film is disposed on the light-incident or light-exiting surface of a light-transmitting element, and the optical film has optical microstructures on the side wall facing the light-emitting body that are suitable for deflecting light. A light distribution lens is placed on the light-emitting side of the light-transmitting element so that the light emitted by the light-emitting body is refracted and diffused by the light-transmitting element and the optical film before being emitted from the light distribution lens.
2. The optical system according to claim 1, characterized in that, The optical film is fixed to the light-transmitting component by welding or gluing.
3. The optical system according to claim 1 or 2, characterized in that, The light-emitting body is provided with at least three light sources arranged at intervals in a straight line.
4. The optical system according to claim 3, characterized in that, The optical film is disposed on the light-emitting surface of the light-transmitting element; and The light-transmitting element has at least three collimated light-incident structures designed on its light-incident surface to match each light source in a one-to-one manner.
5. The optical system according to claim 4, characterized in that, The collimated light-incident structure employs a concentrator.
6. The optical system according to claim 1 or 2, characterized in that, The optical film is disposed on the light-incident surface of the light-transmitting component.
7. The optical system according to claim 6, characterized in that, A light guide strip is also provided between the light-emitting element and the light-transmitting element.
8. The optical system according to claim 7, characterized in that, The light-emitting element is disposed on one end of the light guide strip in the width direction so that the light emitted by the light-emitting element propagates along the length direction of the light guide strip.
9. The optical system according to claim 8, characterized in that, The light-transmitting element has a main body portion for forming a light-incident surface on the side end face facing the light guide strip, and a pair of extension portions arranged symmetrically with respect to the light guide strip on both sides of the main body portion; and The light guide strip is located between a pair of extensions to face the light-incident surface of the light-transmitting element.
10. A vehicle light, characterized in that, include: The optical system as described in any one of claims 1 to 9.