Function-reuse optical system and vehicle light

Abstract

The present invention belongs to the technical field of vehicle lamps, and specifically relates to a functionally multiplexed optical system and vehicle lamp, wherein the optical unit includes a first light collecting structure, a second light collecting structure, a first light guiding structure, and a second light guiding structure, wherein the first light collecting structure and the second light collecting structure are arranged front to back; and the first light guiding structure and the second light guiding structure are arranged top to bottom. In the present invention, after the light emitted by the first light source passes through the first light collecting structure, part of the light reaches the c1 inclined reflective surface and is reflected by it before being emitted, and another part of the light reaches the d2 inclined reflective surface and is reflected by it before being emitted. After the light emitted by the second light source passes through the second light collecting structure, part of the light reaches the d1 inclined reflective surface and is reflected by it before being emitted, and another part of the light reaches the c2 inclined reflective surface and is reflected by it before being emitted. The light guiding structures are designed to be arranged up and down, and each light guiding structure includes multiple inclined reflective surfaces arranged front to back, which are connected in a stepped manner along the y direction, thereby improving the uniformity of the reflected light.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamps, and in particular to a function-reuse optical system and a vehicle lamp. Background Art

[0002] In modern lighting technology, achieving multifunctionality has become a key development direction. This requirement typically requires light sources to emit at least two different colors to meet the lighting needs of different scenarios and applications. A common solution is to use a single dual-color light source and place it at the focal point of the same optical unit. This design may seem simple, but it actually has significant drawbacks. Due to physical and optical limitations, it is difficult to ensure that both light colors are perfectly focused at the focal point of the same optical unit. Therefore, in practical applications, at least one color of the light source often deviates from the focal point, resulting in uneven lighting.

[0003] To overcome this shortcoming, the existing technology usually adopts at least two optical units, each corresponding to a light source of a different color. This design can ensure that each color of light source can be accurately focused at the focal point of its corresponding optical unit, thereby achieving a more uniform lighting effect. However, this solution is not perfect. First, it has certain limitations on the spatial size, because each light source needs to be equipped with an independent optical unit, which increases the complexity and manufacturing cost of the equipment to a certain extent; second, when only a single color of light source is lit, dark areas may be formed, thereby affecting the overall lighting effect. In addition, since some light may not be effectively utilized, this design also has the problem of low light utilization. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problems of low light utilization and poor light uniformity in the existing technology, the present invention provides a functional multiplexing optical system and car light with high light utilization and improved lighting uniformity.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a function-multiplexing optical system, which includes: an optical unit, a first light source and a second light source,

[0006] The optical unit comprises:

[0007] a first light collecting structure and a second light collecting structure, wherein the first light collecting structure and the second light collecting structure are arranged in front of and behind each other along the x-direction, the focus of the first light source is located at or near the focus of the first light collecting structure, and the focus of the second light source is located at or near the focus of the second light collecting structure;

[0008] a first light guide structure and a second light guide structure, wherein the first light guide structure and the second light guide structure are arranged vertically along the z direction, the first light guide structure includes a c1 inclined reflective surface and a d1 inclined reflective surface, the c1 inclined reflective surface and the d1 inclined reflective surface are arranged front to back along the x direction and are connected in a stepped manner along the y direction, and the second light guide structure includes a c2 inclined reflective surface and a d2 inclined reflective surface, the c2 inclined reflective surface and the d2 inclined reflective surface are arranged front to back along the x direction and are connected in a stepped manner along the y direction;

[0009] Among them, after the light emitted by the first light source is collimated by the first light collecting structure, part of the light reaches the c1 inclined reflective surface and is reflected by it and then emitted, and the other part of the light reaches the d2 inclined reflective surface and is reflected by it and then emitted; after the light emitted by the second light source is collimated by the second light collecting structure, part of the light reaches the d1 inclined reflective surface and is reflected by it and then emitted, and the other part of the light reaches the c2 inclined reflective surface and is reflected by it and then emitted.

[0010] The specific technical effect is that light sources with different functions are equipped with independent light collecting structures, which ensures that the light source of each color can be emitted as close to parallel light or at a small angle as possible, thereby achieving a more uniform lighting effect. After the light emitted by each light source enters its corresponding light collecting structure, it will be divided into two parts: one part of the light is reflected by the first light guide structure closer to it, and the other part of the light continues to propagate downward for a distance and then reflected by the second light guide structure below. In view of the fact that the light intensity emitted from the center of the light collecting structure is higher than the light intensity emitted from the edge, an up and down distribution design is adopted: high-intensity light is propagated farther (that is, it is propagated to the second light guide structure below and then reflected out), while weaker light is propagated shorter (that is, it is propagated to the first light guide structure closer above and then reflected out). This design improves the uniformity of light in the z direction for each light source;

[0011] In addition, each light-guiding structure includes a plurality of inclined reflective surfaces, and the plurality of inclined reflective surfaces are designed to be arranged front to back and connected in a stepped manner along the y direction. Compared with the conventional method of using a whole optical surface, due to the integrity and continuity of the large optical surface, light may produce focusing or defocusing phenomena in certain areas. After the present invention divides each light-guiding structure into a plurality of inclined reflective surfaces, each inclined reflective surface can be regarded as a small, relatively independent reflector. In this way, the light emitted by the light-collecting structure is divided into several small areas. The smaller the area, the better the lighting effect, thereby improving the uniformity in the y direction. This alleviates the problem of uneven lighting caused by a single color passing only through the light-collecting structure. Through the structural design of the present invention, the lighting between each area is more uniform.

[0012] Furthermore, the c1 inclined reflective surface and the d2 inclined reflective surface are arranged vertically and directly below the first light collecting structure along the z direction, and the d1 inclined reflective surface and the c2 inclined reflective surface are arranged vertically and directly below the second light collecting structure along the z direction. The projection length of the first light collecting structure along the x direction is L1, the projection lengths of the c1 inclined reflective surface and the d2 inclined reflective surface along the x direction are both L11, the projection length of the second light collecting structure along the x direction is L2, and the projection lengths of the c2 inclined reflective surface and the d1 inclined reflective surface along the x direction are both L22.

[0013] Among them, L1=L11, L2=L22.

[0014] The specific technical effects are: the design of L1=L11 enables the light emitted by the first light collecting structure to be completely received and reflected by the c1 inclined reflection surface and the d2 inclined reflection surface in the x direction, and the c1 inclined reflection surface and the d2 inclined reflection surface adopt a top-down distribution design, which neutralizes the intensity of the emitted light, improves uniformity, improves light utilization, and has high light efficiency; the design of L2=L22 enables the light emitted by the second light collecting structure to be completely received and reflected by the d1 inclined reflection surface and the c2 inclined reflection surface in the x direction, and the d1 inclined reflection surface and the c2 inclined reflection surface adopt a top-down distribution design, which weakens the difference in the brightness of the emitted light, improves uniformity, improves light utilization, and has high light efficiency.

[0015] Furthermore, the first light-guiding structure includes a plurality of c1 inclined reflecting surfaces and a plurality of d1 inclined reflecting surfaces, and the c1 inclined reflecting surfaces and the d1 inclined reflecting surfaces are alternately arranged front to back along the x-direction; the second light-guiding structure includes a plurality of c2 inclined reflecting surfaces and a plurality of d2 inclined reflecting surfaces, and the c2 inclined reflecting surfaces and the d2 inclined reflecting surfaces are alternately arranged front to back along the x-direction; the projection length of the plurality of c1 inclined reflecting surfaces along the y-direction plus the projection length of the plurality of d2 inclined reflecting surfaces along the y-direction is equal to the projection length of the first light collecting structure along the y-direction; and the projection length of the plurality of d1 inclined reflecting surfaces along the y-direction plus the projection length of the plurality of c2 inclined reflecting surfaces along the y-direction is equal to the projection length of the second light collecting structure along the y-direction.

[0016] The specific technical effect is: by adopting this design, the light emitted by the first light-guiding structure and the second light-guiding structure is divided into multiple parts in the y direction, and the light emitted by the light collecting structure is equally divided into several small areas. The smaller the area, the better the lighting effect, thereby improving the uniformity in the Y direction, which alleviates the problem of uneven lighting caused by a single color passing only through the light collecting structure, and since the sum of the projection lengths of all c1 inclined reflection surfaces and d2 inclined reflection surfaces along the y direction is equal to the projection length of the first light collecting structure along the y direction, and the sum of the projection lengths of all d1 inclined reflection surfaces and c2 inclined reflection surfaces along the y direction is equal to the projection length of the second light collecting structure along the y direction, the light emitted by the first light collecting structure can all be received and reflected by the c1 inclined reflection surface and the d2 inclined reflection surface in the y direction, and the light emitted by the second light collecting structure can all be received and reflected by the d1 inclined reflection surface and the c2 inclined reflection surface in the y direction, thereby improving the utilization rate of light and high light efficiency.

[0017] Furthermore, the c1 inclined reflective surface and the c2 inclined reflective surface are distributed front and back along the x-direction, and the d2 inclined reflective surface and the d1 inclined reflective surface are connected to each other.

[0018] Furthermore, it also includes a thick-walled structure, on which a light-emitting surface and an auxiliary light-guiding structure are provided, and the light-emitting surface and the auxiliary light-guiding structure are arranged on the two ends of the thick-walled structure front and back along the x-direction, and the auxiliary light-guiding structure is used to reflect the light reflected by the first light-guiding structure and / or the second light-guiding structure, and the light-emitting surface is used to refract the light reflected by the auxiliary light-guiding structure.

[0019] The specific technical effect is: by setting an auxiliary light-guiding structure to reflect the light reflected by the first light-guiding structure and / or the second light-guiding structure, the light is distributed more evenly after reflection, thereby further improving the uniformity.

[0020] Furthermore, the auxiliary light-guiding structure includes a first auxiliary surface and a second auxiliary surface arranged vertically along the z direction, and the first auxiliary surface and the second auxiliary surface are both arranged at an angle. The light emitted by the first light-guiding structure and / or the second light-guiding structure passes through the second auxiliary surface and the first auxiliary surface in turn, and then propagates to the light-emitting surface after reflection and then exits.

[0021] Furthermore, the light emitting surface and / or the auxiliary light guide structure are provided with patterns.

[0022] The specific technical effect is that the pattern is set on the light-emitting surface, which can also diffuse the light.

[0023] Furthermore, the angles between the first light guide structure and the second light guide structure and the x direction in the xz plane are both in the range of 40° to 50°.

[0024] The specific technical effect is: further improving the lighting uniformity.

[0025] Furthermore, the optical unit, the first light source and the second light source constitute a group of optical components, and there are multiple optical components, which are arranged in sequence.

[0026] A vehicle lamp, comprising a function-multiplexing optical system as described in any one of the above items.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The present invention equips light sources with different functions with independent light collecting structures, which ensures that light sources of each color can emit as nearly parallel light as possible, thereby providing primary output light for subsequent structures, thereby achieving a more uniform lighting effect.

[0029] (2) After the light emitted by each light source enters its corresponding light collecting structure, it will be divided into two parts: one part of the light is reflected by the first light guide structure closer to it, and the other part of the light continues to propagate downward for a distance and then is reflected by the second light guide structure below. Since the light intensity emitted from the center of the light collecting structure is higher than the light intensity emitted from the edge, an up-down distribution design is adopted: high-intensity light is propagated farther (i.e., it propagates to the second light guide structure below and then is reflected out), while weaker light is propagated shorter (i.e., it propagates to the first light guide structure above and then is reflected out). This design improves the uniformity of light in the z direction for each light source.

[0030] (3) Each light-guiding structure includes a plurality of inclined reflective surfaces, which are designed to be arranged front to back and connected in a stepped manner along the y direction. Compared with the traditional method of using a whole optical surface, due to the integrity and continuity of the large optical surface, light may be focused or defocused in certain areas. After the present invention divides each light-guiding structure into a plurality of inclined reflective surfaces, each inclined reflective surface can be regarded as a small, relatively independent reflector. In this way, the light emitted by the light-collecting structure is divided into several small areas. The smaller the area, the better the lighting effect, thereby improving the uniformity in the y direction. This alleviates the problem of uneven lighting caused by a single color passing only through the light-collecting structure.

[0031] (4) The projection lengths of the c1 inclined reflecting surface and the d2 inclined reflecting surface along the x direction are equal to the projection length of the first light collecting structure along the x direction, so that the light emitted by the first light collecting structure can all be received and reflected by the c1 inclined reflecting surface and the d2 inclined reflecting surface in the x direction, and the c1 inclined reflecting surface and the d2 inclined reflecting surface adopt an up-down distribution design, which weakens the difference in the brightness of the light output, improves the uniformity, improves the utilization rate of light, and has high light efficiency; the design of L2=L22 makes the light emitted by the second light guide structure also have the above technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and examples.

[0033] Figure 1 Schematic diagram of the structure of embodiment 1 of a function-multiplexing optical system of the present invention;

[0034] Figure 2 for Figure 1 Schematic diagram of the optical path of the first light collecting structure in the xz plane;

[0035] Figure 3 for Figure 1 Schematic diagram of the optical path of the second light collecting structure in the xz plane;

[0036] Figure 4 Schematic diagram of the structure of embodiment 2 of a function-multiplexing optical system of the present invention;

[0037] Figure 5 This is a schematic structural diagram of Example 3 of a function-multiplexing optical system of the present invention;

[0038] Figure 6 for Figure 5 Schematic diagram of the optical path in the xz plane.

[0039] In the figure: 1. optical unit; 2. first light source; 3. second light source; 4. first light collecting structure; 5. second light collecting structure; 6. first light guiding structure; 601. c1 inclined reflecting surface; 602. d1 inclined reflecting surface; 7. second light guiding structure; 701. c2 inclined reflecting surface; 702. d2 inclined reflecting surface; 8. thick-walled structure; 801. light emitting surface; 9. auxiliary light guiding structure; 901. first auxiliary surface; 902. second auxiliary surface. DETAILED DESCRIPTION

[0040] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They 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 cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0043] like Figures 1 to 3 FIG. 1 is a preferred embodiment of the present invention, which is a functional multiplexing optical system and a vehicle light, including an optical unit 1, a first light source 2 and a second light source 3.

[0044] The optical unit 1 comprises:

[0045] a first light collecting structure 4 and a second light collecting structure 5, the first light collecting structure 4 and the second light collecting structure 5 being arranged front and back along the x-direction, the focus of the first light source 2 being located at or near the focus of the first light collecting structure 4, and the focus of the second light source 3 being located at or near the focus of the second light collecting structure 5;

[0046] Two first light guide structures 6 and two second light guide structures 7, the two first light guide structures 6 are arranged sequentially along the y direction, the two second light guide structures 7 are arranged sequentially along the y direction, the first light guide structure 6 and the second light guide structure 7 are arranged vertically along the z direction, the first light guide structure 6 includes a c1 inclined reflective surface 601 and a d1 inclined reflective surface 602, the c1 inclined reflective surface 601 and the d1 inclined reflective surface 602 are arranged front to back along the x direction and connected in a stepped manner along the y direction, the second light guide structure 7 includes a c2 inclined reflective surface 701 and a d2 inclined reflective surface 702, the c2 inclined reflective surface 701 and the d2 inclined reflective surface 702 are arranged front to back along the x direction and connected in a stepped manner along the y direction;

[0047] Among them, after the light emitted by the first light source 2 is collimated by the first light collecting structure 4, part of the light reaches the c1 inclined reflective surface 601 and is reflected by it and then emitted, and the other part of the light reaches the d2 inclined reflective surface 702 and is reflected by it and then emitted. After the light emitted by the second light source 3 is collimated by the second light collecting structure 5, part of the light reaches the d1 inclined reflective surface 602 and is reflected by it and then emitted, and the other part of the light reaches the c2 inclined reflective surface 701 and is reflected by it and then emitted.

[0048] In this embodiment, the included angles between the first light guide structure 6 and the second light guide structure 7 and the x direction in the xz plane are both in the range of 40° to 50°. Preferably, when the included angle is 45°, the light uniformity is better.

[0049] Therefore: light sources with different functions are equipped with independent light-collecting structures, which ensure that each color of light source can emit as nearly parallel light as possible, thereby providing primary output light for subsequent structures. After the light emitted by each light source enters its corresponding light-collecting structure, it will be divided into two parts: one part of the light is reflected by the first light-guiding structure 6 closer to it, and the other part of the light continues to propagate downward for a distance before being reflected by the second light-guiding structure 7 below. Since the light intensity emitted from the center of the light-collecting structure is higher than that emitted from the edge, a top-down distribution design is adopted: high-intensity light is propagated farther (i.e., it propagates to the second light-guiding structure 7 below and then reflects out), while weaker light propagates shorter (i.e., it propagates to the first light-guiding structure 6 closer above and then reflects out). This design improves the uniformity of light in the z-direction for each light source;

[0050] In addition, each light-guiding structure includes a plurality of inclined reflective surfaces, and the plurality of inclined reflective surfaces are designed to be arranged front to back and connected in a stepped manner along the y direction. Compared with the traditional method of using a whole optical surface, due to the integrity and continuity of the large optical surface, light may produce focusing or defocusing phenomena in certain areas. After the present invention divides each light-guiding structure into a plurality of inclined reflective surfaces, each inclined reflective surface can be regarded as a small, relatively independent reflector. In this way, the light emitted by the light-collecting structure is divided into several small areas. The smaller the area, the better the lighting effect, thereby improving the uniformity in the Y direction, which alleviates the problem of uneven lighting caused by a single color passing only through the light-collecting structure. This solves the problem that a large dark area may be formed when a single color light source is lit. Through the structural design of the present invention, the lighting between each area is more uniform.

[0051] In this embodiment, the first light collecting structure 4 and the second light collecting structure 5 and the first light guiding structure 6 and the second light guiding structure 7 can be connected integrally or separately.

[0052] In this embodiment, the c1 inclined reflective surface 601 and the d2 inclined reflective surface 702 are arranged vertically along the z direction directly below the first light collecting structure 4, and the d1 inclined reflective surface 602 and the c2 inclined reflective surface 701 are arranged vertically along the z direction directly below the second light collecting structure 5. The projection length of the first light collecting structure 4 along the x direction is L1, the projection length of the c1 inclined reflective surface 601 and the d2 inclined reflective surface 702 along the x direction is L11, the projection length of the second light collecting structure 5 along the x direction is L2, and the projection length of the c2 inclined reflective surface 701 and the d1 inclined reflective surface 602 along the x direction is L22.

[0053] Among them, L1=L11, L2=L22.

[0054] Therefore: the design of L1=L11 enables the light emitted by the first light collecting structure 4 to be completely received and reflected by the c1 inclined reflection surface 601 and the d2 inclined reflection surface 702 in the x direction, and the c1 inclined reflection surface 601 and the d2 inclined reflection surface 702 adopt a top-down distribution design, which neutralizes the intensity of the emitted light, improves the uniformity, improves the utilization rate of light, and has high light efficiency; the design of L2=L22 enables the light emitted by the second light collecting structure 5 to be completely received and reflected by the d1 inclined reflection surface 602 and the c2 inclined reflection surface 701 in the x direction, and the d1 inclined reflection surface 602 and the c2 inclined reflection surface 701 adopt a top-down distribution design, which weakens the difference in the brightness of the emitted light, improves the uniformity, improves the utilization rate of light, and has high light efficiency.

[0055] In this embodiment, the first light-guiding structure 6 includes a plurality of c1 inclined reflecting surfaces 601 and a plurality of d1 inclined reflecting surfaces 602, and the c1 inclined reflecting surfaces 601 and the d1 inclined reflecting surfaces 602 are alternately arranged front to back along the x-direction. The second light-guiding structure 7 includes a plurality of c2 inclined reflecting surfaces 701 and a plurality of d2 inclined reflecting surfaces 702, and the c2 inclined reflecting surfaces 701 and the d2 inclined reflecting surfaces 702 are alternately arranged front to back along the x-direction. The projection length of the plurality of c1 inclined reflecting surfaces 601 along the y-direction plus the projection length of the plurality of d2 inclined reflecting surfaces 702 along the y-direction is equal to the projection length of the first light collecting structure along the y-direction, and the projection length of the plurality of d1 inclined reflecting surfaces 602 along the y-direction plus the projection length of the plurality of c2 inclined reflecting surfaces 701 along the y-direction is equal to the projection length of the second light collecting structure 5 along the y-direction.

[0056] It should be noted here that: since the c1 inclined reflective surface 601 and the c2 inclined reflective surface 701 are distributed front and back, and the projection lengths along the x and y directions are equal, the brightness of the light reflected from the c1 inclined reflective surface 601 and the c2 inclined reflective surface 701 are similar, the d2 inclined reflective surface 702 and the d1 inclined reflective surface 602 are connected to each other, and the projection lengths along the x and y directions are equal, the brightness of the light reflected from the d2 inclined reflective surface 702 and the d1 inclined reflective surface 602 are similar, therefore, the projection length of the first light collecting structure 4 along the y direction is set to W1, the projection length of the c1 inclined reflective surface 601 along the y direction is W11, the projection length of the d1 inclined reflective surface 602 along the y direction is W12, the projection length of the second light collecting structure 5 along the y direction is W2, the projection length of the c2 inclined reflective surface 701 along the y direction is W21, and the projection length of the d2 inclined reflective surface 702 along the y direction is W22.

[0057] Wherein, W11=W12=W21=W22. When the first light guide structure (6) and the second light guide structure (7) are equally divided into an even number of inclined reflection surfaces, W1=2N*(W11+W22), W2=2N*(W12+W21), where N=1, 2, 3, 4...; when the first light guide structure (6) and the second light guide structure (7) are equally divided into an odd number of inclined reflection surfaces, W1=2N*(W11+W22)+W11, W2=2N*(W12+W21)+W12, where N=1, 2, 3, 4...

[0058] For details, see Figure 1 As shown, the first light guide structure 6 is equally divided into four inclined reflective surfaces, which are arranged in sequence along the y direction to form an upper light guide structure group, and from left to right are respectively c1 inclined reflective surface 601-I, d1 inclined reflective surface 602-I, c1 inclined reflective surface 601-II, and d1 inclined reflective surface 602-II, and adjacent two inclined reflective surfaces are connected in a step-like manner; the second light guide structure 7 is also equally divided into four inclined reflective surfaces, and the four inclined reflective surfaces are arranged in sequence along the y direction to form a lower light guide structure group, and from left to right are respectively c2 inclined reflective surface 701-I, d2 inclined reflective surface 702-I, c2 inclined reflective surface 701-II, and d2 inclined reflective surface 702-II, and adjacent two inclined reflective surfaces are connected in a step-like manner;

[0059] Where: W11=W12=W21=W22, so W1=W11+W22+W11+W22, W2=W21+W12+W21+W12; see Figures 1 to 2 As shown, taking the light emitted by the first light source 2 as an example, the working principle is as follows:

[0060] After the light emitted by the first light source 2 passes through the first light guide structure 6 and is collimated into parallel light or approximately parallel light, it is divided into four parts and reaches the c1 inclined reflection surface 601-Ⅰ, the d2 inclined reflection surface 702-Ⅰ, the c1 inclined reflection surface 601-Ⅱ, and the d2 inclined reflection surface 702-Ⅱ respectively. The light emitted from the left edge area of ​​the first light guide structure 6 propagates to the c1 inclined reflection surface 601-Ⅰ, and the light emitted from the middle area of ​​the first light guide structure 6 propagates to the d2 inclined reflection surface 702-Ⅰ. Since the c1 inclined reflection surface 601-Ⅰ is closer to the first light guide structure 6 than the d2 inclined reflection surface 702-Ⅰ, based on the principle that the farther the light propagates, the higher the light intensity loss is generally, the light intensity reflected from the c1 inclined reflection surface 601-Ⅰ and the d2 inclined reflection surface 702-Ⅰ is ultimately similar;

[0061] The light emitted from the middle area of ​​the first light-guiding structure 6 propagates to the c1 inclined reflection surface 601-Ⅱ, and the light emitted from the right edge area of ​​the first light-guiding structure 6 propagates to the d2 inclined reflection surface 702-Ⅱ. Since the c1 inclined reflection surface 601-Ⅱ is closer to the first light-guiding structure 6 than the d2 inclined reflection surface 702-Ⅱ, the light intensity reaching the c1 inclined reflection surface 601-Ⅱ is the strongest among the four surfaces, and the light intensity reaching the d2 inclined reflection surface 702-Ⅱ is the weakest among the four surfaces. However, compared with the traditional method of using a whole optical surface, the light emitted by the light collecting structure is divided into several small areas. The smaller the area, the better the lighting effect, thereby improving the uniformity in the Y direction, which alleviates the problem of uneven lighting caused by a single color passing only through the light collecting structure.

[0062] The optical path principle of the light emitted by the second light source 3 is the same as that described above, and will not be described here with examples.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the implementation and protection scope of the present invention.

[0064] The present invention also has the following implementation modes based on the above:

[0065] Example 2:

[0066] like Figure 4 As shown,

[0067] The difference from Example 1 is that:

[0068] The optical unit 1 , the first light source 2 and the second light source 3 constitute a group of optical components. There are multiple optical components, and the multiple optical components are arranged in sequence along the y direction.

[0069] It should be noted here that the arrangement of the optical components can be changed according to actual needs. For example, they can be arranged tilted, or two adjacent optical components can be symmetrically arranged.

[0070] Example 3:

[0071] like Figures 5 and 6 As shown,

[0072] The difference from Example 2 is that:

[0073] It also includes a thick-walled structure 8, on which a light-emitting surface 801 and an auxiliary light-guiding structure 9 are provided. The light-emitting surface 801 and the auxiliary light-guiding structure 9 are arranged on both ends of the thick-walled structure 8 front and back along the x-direction. The auxiliary light-guiding structure 9 is used to reflect the light reflected by the first light-guiding structure 6 and / or the second light-guiding structure 7, and the light-emitting surface 801 is used to refract the light reflected by the auxiliary light-guiding structure 9.

[0074] In this embodiment, the auxiliary light-guiding structure 9 includes a first auxiliary surface 901 and a second auxiliary surface 902 arranged vertically along the z direction. The first auxiliary surface 901 and the second auxiliary surface 902 are both arranged at an angle. The light emitted by the first light-guiding structure 6 and / or the second light-guiding structure 7 is reflected by the second auxiliary surface 902 and the first auxiliary surface 901 in turn, and then propagates to the light-emitting surface 801 and is emitted.

[0075] In this embodiment, patterns are provided on the light emitting surface 801 and / or the auxiliary light guiding structure 9 .

[0076] Therefore, by providing a pattern on the light-emitting surface 801, it is also possible to diffuse the light, and the shape of the pattern can be designed as a corn kernel pattern, a stripe pattern or other shaped patterns as needed.

[0077] Example 4:

[0078] In this embodiment, a vehicle lamp is provided, comprising a function-multiplexing optical system as described in any one of the above embodiments.

[0079] Compared with the prior art, the present invention has the following beneficial effects:

[0080] (1) The present invention equips light sources with different functions with independent light collecting structures, which ensures that light sources of each color can emit as nearly parallel light as possible, thereby providing primary output light for subsequent structures, thereby achieving a more uniform lighting effect.

[0081] (2) After the light emitted by each light source enters its corresponding light collecting structure, it will be divided into two parts: one part of the light is reflected by the first light guide structure closer to it, and the other part of the light continues to propagate downward for a distance and then is reflected by the second light guide structure below. Since the light intensity emitted from the center of the light collecting structure is higher than the light intensity emitted from the edge, an up-down distribution design is adopted: high-intensity light is propagated farther (i.e., it propagates to the second light guide structure below and then is reflected out), while weaker light is propagated shorter (i.e., it propagates to the first light guide structure above and then is reflected out). This design improves the uniformity of light in the z direction for each light source.

[0082] (3) Each light-guiding structure includes a plurality of inclined reflective surfaces, which are designed to be arranged front to back and connected in a stepped manner along the y direction. Compared with the traditional method of using a whole optical surface, due to the integrity and continuity of the large optical surface, light may be focused or defocused in certain areas. After the present invention divides each light-guiding structure into a plurality of inclined reflective surfaces, each inclined reflective surface can be regarded as a small, relatively independent reflector. In this way, the light emitted by the light-collecting structure is divided into several small areas. The smaller the area, the better the lighting effect, thereby improving the uniformity in the y direction. This alleviates the problem of uneven lighting caused by a single color passing only through the light-collecting structure.

[0083] (4) The projection lengths of the c1 inclined reflecting surface and the d2 inclined reflecting surface along the x direction are equal to the projection length of the first light collecting structure along the x direction, so that the light emitted by the first light collecting structure can all be received and reflected by the c1 inclined reflecting surface and the d2 inclined reflecting surface in the x direction, and the c1 inclined reflecting surface and the d2 inclined reflecting surface adopt an up-down distribution design, which weakens the difference in the brightness of the light output, improves the uniformity, improves the utilization rate of light, and has high light efficiency; the design of L2=L22 makes the light emitted by the second light guide structure also have the above technical effects.

[0084] The above description is intended to serve as a guide for the preferred embodiments of the present invention. Based on the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A function-multiplexing optical system, characterized in that: include: an optical unit (1), a first light source (2) and a second light source (3), The optical unit (1) comprises: a first light collecting structure (4) and a second light collecting structure (5), wherein the first light collecting structure (4) and the second light collecting structure (5) are arranged front and back along the x-direction, the focus of the first light source (2) is located at or near the focus of the first light collecting structure (4), and the focus of the second light source (3) is located at or near the focus of the second light collecting structure (5); A first light guide structure (6) and a second light guide structure (7), wherein the first light guide structure (6) and the second light guide structure (7) are arranged vertically along the z direction, the first light guide structure (6) comprises a c1 inclined reflection surface (601) and a d1 inclined reflection surface (602), the c1 inclined reflection surface (601) and the d1 inclined reflection surface (602) are arranged front to back along the x direction and are connected in a stepped manner along the y direction, and the second light guide structure (7) comprises a c2 inclined reflection surface (701) and a d2 inclined reflection surface (702), the c2 inclined reflection surface (701) and the d2 inclined reflection surface (702) are arranged front to back along the x direction and are connected in a stepped manner along the y direction; wherein, after the light emitted by the first light source (2) is collimated by the first light collecting structure (4), a portion of the light reaches the c1 inclined reflective surface (601) and is reflected therefrom before being emitted, and another portion of the light reaches the d2 inclined reflective surface (702) and is reflected therefrom before being emitted, and after the light emitted by the second light source (3) is collimated by the second light collecting structure (5), a portion of the light reaches the d1 inclined reflective surface (602) and is reflected therefrom before being emitted, and another portion of the light reaches the c2 inclined reflective surface (701) and is reflected therefrom before being emitted; The c1 inclined reflection surface (601) and the d2 inclined reflection surface (702) are arranged vertically and directly below the first light collecting structure (4) along the z direction, and the d1 inclined reflection surface (602) and the c2 inclined reflection surface (701) are arranged vertically and directly below the second light collecting structure (5) along the z direction. The projection length of the first light collecting structure (4) along the x direction is L1, the projection lengths of the c1 inclined reflection surface (601) and the d2 inclined reflection surface (702) along the x direction are both L11, the projection length of the second light collecting structure (5) along the x direction is L2, and the projection lengths of the c2 inclined reflection surface (701) and the d1 inclined reflection surface (602) along the x direction are both L22, wherein L1=L11 and L2=L22.

2. The function-multiplexing optical system according to claim 1, wherein: The first light-guiding structure (6) comprises a plurality of c1 inclined reflection surfaces (601) and a plurality of d1 inclined reflection surfaces (602), and the c1 inclined reflection surfaces (601) and the d1 inclined reflection surfaces (602) are alternately arranged front to back along the x-direction; the second light-guiding structure (7) comprises a plurality of c2 inclined reflection surfaces (701) and a plurality of d2 inclined reflection surfaces (702), and the c2 inclined reflection surfaces (701) and the d2 inclined reflection surfaces (702) are alternately arranged front to back along the x-direction; the projected length of the plurality of c1 inclined reflection surfaces (601) along the y-direction plus the projected length of the plurality of d2 inclined reflection surfaces (702) along the y-direction is equal to the projected length of the first light-collecting structure (4) along the y-direction; and the projected length of the plurality of d1 inclined reflection surfaces (602) along the y-direction plus the projected length of the plurality of c2 inclined reflection surfaces (701) along the y-direction is equal to the projected length of the second light-collecting structure (5) along the y-direction.

3. The function-multiplexing optical system according to claim 1, wherein: The c1 inclined reflection surface (601) and the c2 inclined reflection surface (701) are distributed front and back along the x direction, and the d2 inclined reflection surface (702) and the d1 inclined reflection surface (602) are connected to each other.

4. The function-multiplexing optical system according to claim 1, wherein: The invention also includes a thick-walled structure (8), wherein a light-emitting surface (801) and an auxiliary light-guiding structure (9) are provided on the thick-walled structure (8), wherein the light-emitting surface (801) and the auxiliary light-guiding structure (9) are arranged on both ends of the thick-walled structure (8) in the front-rear direction along the x-direction, wherein the auxiliary light-guiding structure (9) is used to reflect light reflected by the first light-guiding structure (6) and / or the second light-guiding structure (7), and wherein the light-emitting surface (801) is used to refract light reflected by the auxiliary light-guiding structure (9).

5. The function-multiplexing optical system according to claim 4, characterized in that: The auxiliary light-guiding structure (9) comprises a first auxiliary surface (901) and a second auxiliary surface (902) arranged vertically along the z-direction, wherein the first auxiliary surface (901) and the second auxiliary surface (902) are both arranged at an angle, and light emitted by the first light-guiding structure (6) and / or the second light-guiding structure (7) is reflected by the second auxiliary surface (902) and the first auxiliary surface (901) in sequence, and then propagates to the light-emitting surface (801) and is emitted.

6. The function-multiplexing optical system according to claim 4, characterized in that: The light-emitting surface (801) and / or the auxiliary light-guiding structure (9) are provided with patterns.

7. The function-multiplexing optical system according to claim 1, wherein: The angles between the first light guide structure (6) and the second light guide structure (7) and the x direction in the xz plane are both in the range of 40° to 50°.

8. The function-multiplexing optical system according to claim 1, wherein: The optical unit (1), the first light source (2) and the second light source (3) constitute a group of optical components. There are multiple optical components, and the multiple optical components are arranged in sequence.

9. A vehicle lamp, characterized in that: A function-multiplexing optical system comprising the optical system as claimed in any one of claims 1 to 8.

Images