Optical system, vehicle lamp and vehicle
By using optical systems with variable cross-section light guides, thick-walled parts and masks in the car lights, the problem of difficulty in achieving uniform lighting in a limited space is solved, and the lighting in two areas is achieved, meeting the requirements of regulations and improving the lighting effect.
Patent Information
- Application Number
- CN202323477265.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2033-12-20
AI Technical Summary
Existing car lights are difficult to achieve uniform lighting in functional areas in limited spaces, cannot meet regulatory requirements, and have poor visual effects.
An optical system is adopted, using a variable cross-section light guide, thick-walled parts and a mask, and illuminating the two areas through one light guide, meeting the requirements of the regulations and improving the lighting effect.
Implement lighting in two areas in a limited space, save production costs, improve space utilization and optical efficiency, meet regulatory requirements and achieve good lighting effects.
Smart Images
Figure CN222651119U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of optics, in particular to an optical system, a vehicle lamp and a vehicle. Background Art
[0002] With the rapid development of the automotive industry, automobile manufacturers have increasingly higher requirements for the appearance and optical effects of headlights, but the available space inside the car is decreasing. In order to make each function of the headlight meet regulatory requirements and present a more beautiful and attractive visual effect, each light-emitting area on the headlight usually uses an independent optical system to meet design requirements.
[0003] In existing technologies, an independent optical system usually consists of a PCB assembly, an LED light source, optical components, and a mask. If each functional window is to be illuminated, there must be enough space to accommodate the optical system that illuminates it. However, when car manufacturers cannot provide enough space, it is difficult to achieve uniform lighting of the functional area. Utility Model Content
[0004] In order to overcome the above technical defects, the purpose of the utility model is to provide an optical system that can simultaneously realize the lighting of two areas in a limited space by using a variable-section light guide, and has a better lighting effect while meeting regulatory requirements.
[0005] Specifically, the utility model discloses an optical system, comprising: a light source, a thick-walled member and a light guide, wherein the light source comprises a first light source and a second light source;
[0006] The first light source emits a first light, the thick-walled member comprises a first light incident surface, a first total reflection surface and a first light exiting surface, the first light enters the thick-walled member through the first light incident surface, is totally reflected on the first total reflection surface, and exits the thick-walled member through the first light exiting surface;
[0007] The light guide is provided with a first portion located at one end thereof and a second portion located at the other end thereof, the cross section of the first portion is rectangular, the first portion includes a second light incident surface and a second light emitting surface, the second light incident surface corresponds to the first light emitting surface of the thick-walled member, and the second light emitting surface is opposite to the second light incident surface; the first light is emitted from the thick-walled member via the first light emitting surface, enters the light guide from the second light incident surface, and is emitted from the light guide from the second light emitting surface;
[0008] The second light source emits a second light, the first end surface of the first part is a third light incident surface, opposite to the second light source, and the second light is incident into the light guide via the third light incident surface;
[0009] The second part includes a second total reflection surface and a third light emitting surface, the second total reflection surface is arranged on the same side as the second light incident surface, and the third light emitting surface is arranged on the same side as the second light emitting surface; the second light is emitted from the light guide through the third light emitting surface after being totally reflected by the second total reflection surface.
[0010] Preferably, the first light emitting surface is provided with a rectangular optical pattern, and the first light is emitted from the thick-walled part at a first angle; and the second total reflection surface is optical teeth with uniform spacing.
[0011] Preferably, the other end of the light guide relative to the first part is a second part, and the cross-section of the second part is circular; the first part and the second part of the light guide are connected by a transition part, and the light guide is formed in one piece.
[0012] The utility model also discloses a vehicle lamp, comprising any one of the above-mentioned optical systems.
[0013] Preferably, it also includes a headlight mask and a PCB board,
[0014] The first light source and the second light source are respectively a first LED and a second LED, both of which are arranged on the PCB board;
[0015] The headlight cover is arranged on one side of the second light emitting surface of the light guide, and includes a first light emitting area and a second light emitting area, the first light emitting area is opposite to the second light emitting surface, and the first light is emitted from the headlight via the first light emitting area;
[0016] The second light emitting area is opposite to the third light emitting surface, and the second light is emitted from the vehicle lamp via the second light emitting area.
[0017] Preferably, the first light emitting area is a functional light emitting area of a side logo lamp of the vehicle lamp, and the second light emitting area is provided with a hollow logo pattern.
[0018] Preferably, the first light is emitted from the thick-walled part at a first angle, the first angle being the angle between the first light and the vertical reference axis of the vehicle, and the first angle being 5-20°;
[0019] The first light emitting area includes a fourth light emitting surface, and the first light is emitted from the vehicle lamp at a second angle, and the second angle is 10-40°.
[0020] The utility model also discloses a vehicle, comprising any of the above-mentioned vehicle lights.
[0021] Compared with the prior art, the above technical solution has the following beneficial effects:
[0022] The optical system in the utility model is composed of a light guide with a variable cross-section, a thick-walled part and a mask. The combined optical system breaks the space limitation in the headlight and realizes the lighting of two areas in a limited space and on the basis of using only one PCB. It can save production costs, improve space utilization, and improve the optical efficiency of the optical system, thereby meeting regulatory requirements and achieving a better lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figures 1(1) and (2) are schematic diagrams of a thick-walled component of an optical system according to an embodiment of the present utility model;
[0024] Figure 2 1 is a schematic diagram of the optical propagation path of the first light in the thick-walled component;
[0025] Figure 3 is a schematic diagram of a light guide in the embodiment shown in FIG1 ;
[0026] Figure 4 An exploded view of a vehicle lamp according to an embodiment of the present utility model;
[0027] Figure 5 for Figure 4 A schematic diagram of an optical propagation path of a first light ray in the illustrated embodiment;
[0028] Figure 6 for Figure 4 A schematic diagram of an optical propagation path of a second light ray in the illustrated embodiment;
[0029] Figure 7 for Figure 4 A schematic diagram of the optical propagation path in the vehicle lamp in the illustrated embodiment;
[0030] Figure 8 for Figure 4 Schematic diagram of the headlight cover in the illustrated embodiment.
[0031] Reference numerals:
[0032] 10-thick-walled member, 11-first light incident surface, 12-first total reflection surface, 13-first light emitting surface;
[0033] 20-light guide, 21-second light incident surface, 22-second light emitting surface, 23-third light incident surface, 24-second total reflection surface, 25-third light emitting surface;
[0034] 30-headlight mask, 31-first light emitting area, 32-second light emitting area, 33-fourth light emitting surface;
[0035] 40-PCB board, 41-first light source, 42-second light source;
[0036] A-first part, C-transition part, B-second part, a-first light ray, b-second light ray, α-first angle, β-second angle. DETAILED DESCRIPTION
[0037] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.
[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0039] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0040] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".
[0041] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0042] An embodiment of the present utility model provides an optical system, including: a light source, a thick-walled member 10 and a light guide 20 .
[0043] The light source includes a first light source 41 and a second light source 42. FIG1 (1) and (2) are schematic diagrams of the thick-walled component 10 in this embodiment. The thick-walled component 10 includes a first light incident surface 11, a first total reflection surface 12 and a first light emitting surface 13. Figure 2 The schematic diagram of the optical path of the light in the thick-walled member 10 in this embodiment is as follows: the first light source 41 emits a first light, the first light enters the thick-walled member 10 via the first light incident surface 11, is totally reflected at the first total reflection surface 12, and is emitted from the thick-walled member 10 via the first light emitting surface 13. In addition, as shown in FIG1(2), the first light emitting surface 13 in this embodiment is provided with a rectangular optical pattern, and the emission angle of the first light can be adjusted by setting the shape of the optical pattern.
[0044] Figure 3 Schematic diagram of the light guide 20 in this embodiment. The light guide 20 is provided with a first portion A located at one end thereof and a second portion B located at the other end thereof, the cross section of the first portion A is rectangular, the first portion A includes a second light incident surface 21 and a second light emitting surface 22 (not shown in the figure), the second light incident surface 21 corresponds to the first light emitting surface 13 of the thick-walled member 10, and the second light emitting surface 22 is opposite to the second light incident surface 21; the first light is emitted from the thick-walled member 10 via the first light emitting surface 13, enters the light guide 20 from the second light incident surface 21, and is emitted from the light guide 20 from the second light emitting surface 22.
[0045] The second light source 42 emits a second light. The first end surface of the first portion A is a third light incident surface, which is opposite to the second light source 42. The second light is incident into the light guide 20 via the third light incident surface.
[0046] The cross section of the second part B is circular, and the second part B includes a second total reflection surface 24 and a third light emitting surface 25, wherein the second total reflection surface 24 is arranged on the same side as the second light incident surface 21, and the third light emitting surface 25 is arranged on the same side as the second light emitting surface 22; the second light is emitted from the light guide 20 via the third light emitting surface 25 after being totally reflected by the second total reflection surface 24. In this embodiment, the second total reflection surface 24 is an optical tooth with uniform spacing to fully realize the technical effects of light mixing and total reflection. In actual design, the shape of the optical tooth can be adjusted according to the focal position of the second light source 42, and the utility model does not make specific restrictions here.
[0047] More preferably, the first portion A and the second portion B of the light guide 20 in this embodiment are connected by a transition portion C, and the light guide 20 is formed in one piece.
[0048] Therefore, the cross section of the light guide 20 in this embodiment is not uniform and constant, and the cross sections at both ends of the light guide 20 are rectangular and circular respectively. However, by providing a light guide 20 with a variable cross section, the propagation path of the light can be made more diverse and the designable space can be expanded. In this embodiment, by providing two light sources respectively, and cooperating with the parts of the light guide 20 with different cross-sectional shapes, two light-emitting surfaces can be provided.
[0049] The optical system can be used in a multifunctional vehicle lamp to save the internal space of the vehicle lamp. Figure 4 FIG. 1 is an exploded view of a headlight in an embodiment of the present invention. The headlight in this embodiment comprises the optical system in the previous embodiment, as well as a headlight mask 30 and a PCB board 40 .
[0050] like Figure 4 As shown, the first light source 41 and the second light source 42 are respectively the first LED and the second LED, and are both arranged on the same PCB board 40. The lamp cover 30 is arranged on one side of the second light emitting surface 22 of the light guide 20, as shown in FIG. Figure 8 As shown, it includes a first light exiting area 31 and a second light exiting area 32 .
[0051] The second light emitting area 32 is opposite to the third light emitting surface 25 , and the second light is emitted from the vehicle lamp via the second light emitting area 32 .
[0052] Figure 5 and Figure 6 Schematic diagrams of the optical paths of the first light and the second light respectively. Figure 5 In the embodiment, the first light source 41 emits a first light, which enters the thick-walled member 10 via the first light incident surface 11, is totally reflected at the first total reflection surface 12, and is emitted from the thick-walled member 10 via the first light emitting surface 13. The first light emitting area 31 of the headlight cover 30 is opposite to the second light emitting surface 22, and the first light is emitted from the headlight via the first light emitting area 31.
[0053] The second light source 42 emits a second light, and the first end surface of the first portion A is a third light incident surface, which is opposite to the second light source 42, and the second light enters the light guide 20 via the third light incident surface; the second light is totally reflected by the second total reflection surface 24 and then exits the light guide 20 via the third light exit surface 25. The second light exit area 32 of the headlight cover 30 is opposite to the third light exit surface 25, and the second light exits the headlight via the second light exit area 32.
[0054] In this embodiment, the first light emitting area 31 is the functional light emitting area of the side logo light of the headlight, and the second light emitting area is provided with a hollow logo pattern to form a logo light emitting area. Therefore, in the headlight of this embodiment, only one PCB board 40 can be used to realize the lighting of two areas in a limited space, saving space inside the headlight.
[0055] In actual design, in order to meet the requirements of relevant regulations on the functions of side beacon lights and light up the specified light-emitting area, in this embodiment, the first light is emitted from the thick-walled part 10 at a first angle, and the first angle is the angle between the first light and the vertical reference axis of the vehicle, and the first angle is 5-10° (preferably 10°); the first light-emitting area 31 includes a fourth light-emitting surface 33, and the first light is emitted from the lamp at a second angle, and the second angle is 10-40° (preferably 25°). Figure 4 It can be seen that the first light emitting area 31 of the headlight mask 30 in this embodiment is wedge-shaped, and the shape of this part depends on the modeling requirements of the headlight. Due to the relevant legal requirements for the side beacon function, the second angle should be 10-40°. In combination with the legal requirements for the light emitting angle and the modeling requirements of the headlight, the angle of the first light emitting surface 13 of the thick-walled part 10 or the angle of the optical pattern arranged thereon can be adjusted accordingly, and the angle of the second light incident surface 21 and the second light emitting surface 22 of the light guide 20 can also be adjusted. It is only necessary to ensure that the final light emitting angle meets the legal requirements. The utility model will not be elaborated here.
[0056] See also Figure 7 , which is a schematic diagram of the propagation path of the light inside the headlight in this embodiment. In this embodiment, two light sources are arranged on a PCB board 40, each of which illuminates different areas through corresponding optical elements to meet the actual needs of lighting and save space inside the headlight.
[0057] In another embodiment of the present invention, a vehicle is provided, comprising the above-mentioned vehicle lamp, which will not be described in detail herein.
[0058] It should be noted that the embodiments of the present invention have better practicability and do not impose any form of limitation on the present invention. Any technician familiar with the field may use the technical content disclosed above to change or modify it into an equivalent effective embodiment. However, any modification or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. An optical system, comprising: A light source, a thick-walled member and a light guide, wherein the light source comprises a first light source and a second light source; The first light source emits a first light, the thick-walled member comprises a first light incident surface, a first total reflection surface and a first light exiting surface, the first light enters the thick-walled member through the first light incident surface, is totally reflected on the first total reflection surface, and exits the thick-walled member through the first light exiting surface; The light guide is provided with a first portion located at one end thereof and a second portion located at the other end thereof, the cross section of the first portion is rectangular, the first portion includes a second light incident surface and a second light emitting surface, the second light incident surface corresponds to the first light emitting surface of the thick-walled member, and the second light emitting surface is opposite to the second light incident surface; the first light is emitted from the thick-walled member via the first light emitting surface, enters the light guide from the second light incident surface, and is emitted from the light guide from the second light emitting surface; The second light source emits a second light, the first end surface of the first part is a third light incident surface, opposite to the second light source, and the second light is incident into the light guide via the third light incident surface; The second part includes a second total reflection surface and a third light emitting surface, the second total reflection surface is arranged on the same side as the second light incident surface, and the third light emitting surface is arranged on the same side as the second light emitting surface; the second light is emitted from the light guide through the third light emitting surface after being totally reflected by the second total reflection surface.
2. The optical system according to claim 1, wherein: The first light-emitting surface is provided with a rectangular optical pattern, and the first light is emitted from the thick-walled member at a first angle; The second total reflection surface is optical teeth with uniform spacing.
3. The optical system according to claim 2, characterized in that The other end of the light guide relative to the first part is a second part, and the cross section of the second part is circular; The first portion and the second portion of the light guide are connected by a transition portion, and the light guide is formed in one piece.
4. A vehicle lamp, characterized in that: Comprising the optical system as described in any one of claims 1-3.
5. The vehicle lamp according to claim 4, characterized in that: It also includes headlight mask and PCB board. The first light source and the second light source are respectively a first LED and a second LED, both of which are arranged on the PCB board; The headlight cover is arranged on one side of the second light emitting surface of the light guide, and includes a first light emitting area and a second light emitting area, the first light emitting area is opposite to the second light emitting surface, and the first light is emitted from the headlight via the first light emitting area; The second light emitting area is opposite to the third light emitting surface, and the second light is emitted from the vehicle lamp via the second light emitting area.
6. The vehicle lamp according to claim 5, characterized in that: The first light emitting area is the functional light emitting area of the side logo lamp of the vehicle lamp, and the second light emitting area is provided with a hollow logo pattern.
7. The vehicle lamp according to claim 6, characterized in that: The first light is emitted from the thick-walled part at a first angle, the first angle being the angle between the first light and the vertical reference axis of the vehicle, and the first angle being 5-20°; The first light emitting area includes a fourth light emitting surface, and the first light is emitted from the vehicle lamp at a second angle, and the second angle is 10-40°.
8. A vehicle, characterized in that Comprising a vehicle lamp as described in any one of claims 4-7.