Function multiplexing optical system and vehicle lamp

Abstract

The utility model belongs to the technical field of car lamps, and particularly relates to a function multiplexing optical system and a car lamp, the function multiplexing optical system comprises a light-in unit, a light guide unit and a light-out surface, the light-in unit and the light-out surface are respectively arranged at two ends of the light guide unit, and the light-in unit comprises a first light-in end and a second light-in end. The first light inlet end and the second light inlet end are sequentially arranged in the front-back direction, a first total reflection surface and a second total reflection surface are arranged at one end of the light guide unit in the front-back direction, the first total reflection surface is located above the first light inlet end, and the second total reflection surface is located above the second light inlet end. According to the utility model, the two light inlet ends which are arranged front and back and correspond to light sources with different light colors are adopted, each light inlet end is provided with a total reflection surface, each light color corresponds to a respective reflection structure, and light is emitted from the same light outlet surface after being totally reflected and refracted in the light guide unit through the total reflection surfaces, so that the effect of function multiplexing is achieved; in addition, the lighting effect is more uniform, and the light emitting efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, in particular to an optical system and a vehicle lamp with multiple functions. Background Art

[0002] In recent years, with the rapid development of the automotive industry and consumers' increasing demands for vehicle safety and aesthetics, automotive lighting technology has also entered a period of rapid development. As a vital component of a car, headlights not only fulfill the basic functions of illumination and signal transmission, but have also become a key element in highlighting a car's design style and brand characteristics. Consequently, consumers' demands for lighting performance are becoming increasingly demanding, and production cost and efficiency are urgent issues facing automotive lighting suppliers.

[0003] In traditional automotive lighting projects, because multiple functions share a single light outlet and typically employ reflective or direct illumination, the optical components at the light input often have a single focal point. This design approach results in at least one color experiencing defocus when processing multiple colors, impacting the uniformity and light pattern of the headlight. Specifically, defocusing results in uneven light distribution, resulting in uneven spots or streaks of light, and uneven lighting, which can affect the driver's vision and driving safety. Furthermore, due to low luminous efficiency, the overall performance of the headlight is also limited. Utility Model Content

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problems of low light extraction efficiency and uneven lighting effect in the prior art, the present invention provides a functionally multiplexed optical system and a headlight, which reasonably and efficiently utilizes light efficiency and improves lighting uniformity.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a functional multiplexing optical system, which includes: a light input unit, a light guide unit and a light output surface, wherein the light input unit and the light output surface are respectively arranged at two ends of the light guide unit, the light input unit includes a first light input end and a second light input end, the first light input end and the second light input end are arranged in sequence along the front-to-back direction, and a first total reflection surface and a second total reflection surface are arranged on one end of the light guide unit along the front-to-back direction, the first total reflection surface is located above the first light input end, and the second total reflection surface is located above the second light input end.

[0006] Among them, the light entering through the first light incident end is emitted toward the first total reflection surface, and is emitted from the light output surface after total reflection; the light entering through the second light incident end is emitted toward the second total reflection surface, and is emitted from the light output surface after total reflection.

[0007] The specific technical effect is: by adopting two light input ends set in the front and back, corresponding to light sources of different light colors, each light input end is provided with a total reflection surface, each light color corresponds to its own reflection structure, and the light is emitted from the same light output surface after total reflection and refraction in the light guide unit through the total reflection surface, which solves the defocus problem on the basis of achieving the effect of functional reuse, and makes the lighting effect more uniform and the light output efficiency higher.

[0008] Furthermore, the number of the first total reflection surface and the number of the second total reflection surface are both plural, and the plurality of the first total reflection surfaces and the plurality of the second total reflection surfaces are alternately arranged in the left-right direction.

[0009] The specific technical effect is: the first total reflection surface and the second total reflection surface are arranged back to back, so that each light color corresponds to its own reflection structure, which solves the defocus problem, and the first total reflection surface and the second total reflection surface are arranged alternately in the left and right directions, so as to achieve the effect of improving the light distribution.

[0010] Furthermore, the projection height of the first total reflection surface in the vertical direction is greater than or equal to the projection height of the light emitting surface, and the projection height of the second total reflection surface in the vertical direction is greater than or equal to the projection height of the light emitting surface.

[0011] The specific technical effect is: the purpose of adopting this design is to ensure that the light outlet can be completely and evenly illuminated.

[0012] Furthermore, a plurality of total reflection groups are provided on one end of the light guide unit, and the plurality of total reflection groups are arranged in sequence along the left and right directions. Each of the total reflection groups is composed of two first total reflection surfaces and two second total reflection surfaces arranged alternately along the up, down, left and right directions, forming an arrangement of two rows and two columns.

[0013] The specific technical effect is: the arrangement of the first total reflection surface and the second total reflection surface is adjusted according to actual needs to present different light distribution effects, and the respective proportions of the first total reflection surface and the second total reflection surface in the up and down directions can also be adjusted according to actual needs. It is only necessary to ensure that in each column, the projection height of the first total reflection surface along the up and down directions plus the projection height of the second total reflection surface along the up and down directions is greater than or equal to the projection height of the light-emitting surface along the up and down directions, so as to ensure that the light outlet can be completely and evenly illuminated.

[0014] Furthermore, the first total reflection surface and the second total reflection surface are connected via a connecting surface.

[0015] The specific technical effect is: by setting a connecting surface to connect the adjacent first total reflection surface and the second total reflection surface, the light transmission path between the adjacent total reflection surfaces can be optimized, ensuring that the light reflection between adjacent dimming units is smoother and continuous, reducing light loss and scattering, thereby improving light utilization, enhancing the overall reflection effect, and making the light more evenly distributed during the total reflection process, thereby improving lighting uniformity.

[0016] Furthermore, the angle between the first total reflection surface and the incident direction is 40° to 50°, and the angle between the second total reflection surface and the incident direction is 40° to 50°.

[0017] Furthermore, a light distribution pattern is provided on the first total reflection surface and / or the second total reflection surface.

[0018] The specific technical effect is: the light distribution pattern can further ensure that the light is evenly distributed after total reflection, thereby improving the efficiency of light energy utilization.

[0019] Furthermore, it includes a first light source and a second light source, the first light source and the second light source have different light colors, the first light source is set at the focus of the first light incident end, and the second light source is set at the focus of the second light incident end.

[0020] The specific technical effect is that light sources with different functions are all set at the focus of the light incident end, making the lighting effect more uniform and the light output efficiency higher.

[0021] Furthermore, the first light incident end and / or the second light incident end is in the form of a concentrator and / or a collimator.

[0022] The specific technical effects are: the form of the light input end can be adjusted according to actual needs, the collimator form is used to adjust the direction of the light so that the light becomes parallel light or approximately parallel light after passing through the collimator, and the condenser form is used to increase the intensity and collimation of the light and focus the light to a point or a certain area.

[0023] A vehicle lamp, comprising the functionally multiplexed optical system as described in any one of the above items.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] By adopting two light input ends set in the front and back, corresponding to light sources of different light colors, a total reflection surface is provided on each light input end, and each light color corresponds to its own reflection structure. The light is totally reflected and refracted in the light guide unit by the total reflection surface, and then emitted from the same light output surface. On the basis of achieving the effect of functional multiplexing, the defocus problem is solved, and the lighting effect is more uniform and the light output efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a light path diagram of Example 1 of the present utility model;

[0028] Figure 2 This is the front view of Example 1;

[0029] Figure 3 for Figure 2 Rear view;

[0030] Figure 4 for Figure 2 Right view;

[0031] Figure 5 This is a light path diagram of Example 2 of the present utility model;

[0032] Figure 6 for Figure 5 The main view;

[0033] Figure 7 This is the front view of Example 3 of the present utility model.

[0034] In the figure: 1. light input unit; 101. first light input end; 102. second light input end; 2. light guide unit; 201. first total reflection surface; 202. second total reflection surface; 203. total reflection group; 204. connecting surface; 205. third total reflection surface; 3. light output surface; 4. first light source; 5. second light source. DETAILED DESCRIPTION

[0035] 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.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "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 a limitation on 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.

[0037] In the description of this utility model, 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 can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, 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 this utility model based on the specific circumstances.

[0038] like Figures 1 to 4 As shown, it is embodiment 1 of the present invention. The functional multiplexing optical system of this embodiment includes: a light input unit 1, a light guide unit 2 and a light output surface 3. The light input unit 1 and the light output surface 3 are respectively arranged at both ends of the light guide unit 2. The light input unit 1 includes a first light input end 101 and a second light input end 102. The first light input end 101 and the second light input end 102 are arranged in sequence along the front-to-back direction. A first total reflection surface 201 and a second total reflection surface 202 are arranged on one end of the light guide unit 2 along the front-to-back direction. The first total reflection surface 201 is located above the first light input end 101, and the second total reflection surface 202 is located above the second light input end 102.

[0039] The light entering through the first light incident end 101 is emitted toward the first total reflection surface 201 and is emitted from the light emitting surface 3 after total reflection; the light entering through the second light incident end 102 is emitted toward the second total reflection surface 202 and is emitted from the light emitting surface 3 after total reflection.

[0040] It should be noted here that: by adopting two light input ends set in the front and back, corresponding to light sources of different light colors, a total reflection surface is provided on each light input end, and each light color corresponds to its own reflection structure. After total reflection and refraction in the light guide unit 2 through the total reflection surface, the light is output from the same light output surface 3, which solves the defocus problem on the basis of achieving the effect of functional multiplexing, and makes the lighting effect more uniform and the light output efficiency higher.

[0041] In this embodiment, there are multiple first total reflection surfaces 201 and multiple second total reflection surfaces 202 , and the multiple first total reflection surfaces 201 and the multiple second total reflection surfaces 202 are alternately arranged along the left-right direction.

[0042] It should be noted here that the first total reflection surface 201 and the second total reflection surface 202 are arranged in front and back, so that each light color corresponds to its own reflection structure, which solves the defocus problem, and the first total reflection surface 201 and the second total reflection surface 202 are arranged alternately in the left and right directions to achieve the effect of improving the light distribution.

[0043] In this embodiment, the vertical projection height L1 of the first total reflection surface 201 is greater than or equal to the vertical projection height L of the light emitting surface 3 , and the vertical projection height L2 of the second total reflection surface 202 is greater than or equal to the vertical projection height L of the light emitting surface 3 .

[0044] It should be noted here that the purpose of adopting this design is to ensure that the light outlet can be completely and evenly illuminated.

[0045] In this embodiment, the first total reflection surface 201 and the second total reflection surface 202 are connected via a connecting surface 204 .

[0046] It should be noted here that: by setting a connecting surface 204 to connect the adjacent first total reflection surface 201 and the second total reflection surface 202, the light transmission path between the adjacent total reflection surfaces can be optimized, ensuring that the light reflection between adjacent dimming units is smoother and continuous, reducing light loss and scattering, thereby improving light utilization, enhancing the overall reflection effect, and making the light more evenly distributed during the total reflection process, thereby improving lighting uniformity.

[0047] In this embodiment, the included angle between the first total reflection surface 201 and the incident direction is 40° to 50°, and the included angle between the second total reflection surface 202 and the incident direction is 40° to 50°.

[0048] In this embodiment, a light distribution pattern is provided on the first total reflection surface 201 and / or the second total reflection surface 202 .

[0049] It should be noted here that the light distribution pattern can further ensure that the light is evenly distributed after reflection, thereby improving the efficiency of light energy utilization.

[0050] In this embodiment, a first light source 4 and a second light source 5 are further included. The first light source 4 and the second light source 5 have different light colors. The first light source 4 is arranged at the focus of the first light incident end 101, and the second light source 5 is arranged at the focus of the second light incident end 102.

[0051] It should be noted here that light sources with different functions are all set at the focus of the light incident end, so that the lighting effect is more uniform and the light output efficiency is higher.

[0052] The first light source 4 corresponds to one light color, and the second light source 5 corresponds to another light color, which can be adjusted and changed according to specific needs.

[0053] In this embodiment, the first light incident end 101 and / or the second light incident end 102 is in the form of a concentrator and / or a collimator.

[0054] It should be noted here that the form of the light input end can be adjusted according to actual needs. The collimator form is used to adjust the direction of the light so that the light becomes parallel light or approximately parallel light after passing through the collimator. The condenser form is used to increase the intensity and collimation of the light and focus the light to a point or a certain area.

[0055] The working principle of this embodiment is:

[0056] The light emitted by the first light source 4 enters through the first light incident end 101 and is emitted toward the first total reflection surface 201, and is emitted from the light emitting surface 3 after being totally reflected by the first total reflection surface 201; the light emitted by the second light source 5 enters through the second light incident end 102 and is emitted toward the second total reflection surface 202, and is emitted from the light emitting surface 3 after being totally reflected by the second total reflection surface 202. The formed light pattern is arranged alternately in the left and right directions.

[0057] 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.

[0058] The present invention also has the following implementation methods based on the above:

[0059] Example 2:

[0060] like Figures 5 and 6 As shown,

[0061] The difference from Example 1 is that:

[0062] In this embodiment, a plurality of total reflection groups 203 are provided on one end of the light guide unit 2, and the plurality of total reflection groups 203 are arranged in sequence along the left-right direction. Each total reflection group 203 is composed of two first total reflection surfaces 201 and two second total reflection surfaces 202 arranged alternately along the up-down and left-right directions, forming an arrangement of two rows and two columns.

[0063] It should be noted here that the arrangement of the first total reflection surface 201 and the second total reflection surface 202 can be adjusted according to actual needs to present different light distribution effects, and the respective proportions of the first total reflection surface 201 and the second total reflection surface 202 in the up and down directions can also be adjusted according to actual needs. It is only necessary to ensure that in each column, the projection height of the first total reflection surface 201 along the up and down directions plus the projection height of the second total reflection surface 202 along the up and down directions is greater than or equal to the projection height of the light output surface 3 along the up and down directions, so as to ensure that the light output port can be completely and evenly illuminated.

[0064] In this embodiment, the projection height L1 of the first total reflection surface 201 along the vertical direction + the projection height L2 of the second total reflection surface 202 along the vertical direction ≥ the projection height L of the light emitting surface 3 along the vertical direction.

[0065] The working principle of this embodiment is:

[0066] The light emitted by the first light source 4 enters through the first light incident end 101 and is emitted toward the first total reflection surface 201, and is emitted from the light emitting surface 3 after total reflection by the first total reflection surface 201; the light emitted by the second light source 5 enters through the second light incident end 102 and is emitted toward the second total reflection surface 202, and is emitted from the light emitting surface 3 after total reflection by the second total reflection surface 202. The formed light pattern is arranged alternately in the up, down, left and right directions, that is, the light color in the diagonal direction in each total reflection group 203 is the same.

[0067] Example 3:

[0068] like Figure 7 As shown,

[0069] The difference from Example 1 is that:

[0070] In this embodiment, a plurality of total reflection groups 203 are provided on one end of the light guide unit 2, and the plurality of total reflection groups 203 are arranged in sequence along the left-right direction. Each total reflection group 203 is composed of a first total reflection surface 201, a second total reflection surface 202 and two third total reflection surfaces 205, which are arranged alternately in the up, down, left and right directions to form two rows and two columns. That is, in each total reflection group 203, a first total reflection surface 201 and a second total reflection surface 202 are arranged in a diagonal direction, and two third total reflection surfaces 205 are arranged in another diagonal direction.

[0071] Example 4:

[0072] A vehicle lamp, comprising a function-multiplexing optical system as described in any one of the above embodiments.

[0073] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0074] By adopting two light input ends set in the front and back, corresponding to light sources of different light colors, a total reflection surface is provided on each light input end, and each light color corresponds to its own reflection structure. The light is totally reflected and refracted in the light guide unit 2 by the total reflection surface and then output from the same light output surface 3. On the basis of achieving the effect of functional multiplexing, the defocus problem is solved, and the lighting effect is more uniform and the light output efficiency is higher.

[0075] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of this utility model. The technical scope of this utility model is not limited to the content 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: A light input unit (1), a light guide unit (2) and a light output surface (3), wherein the light input unit (1) and the light output surface (3) are respectively arranged at two ends of the light guide unit (2). The light incident unit (1) comprises a first light incident end (101) and a second light incident end (102), wherein the first light incident end (101) and the second light incident end (102) are sequentially arranged along the front-to-back direction. A first total reflection surface (201) and a second total reflection surface (202) are provided on one end of the light guide unit (2) along the front-to-back direction, the first total reflection surface (201) is located above the first light incident end (101), and the second total reflection surface (202) is located above the second light incident end (102). The light entering through the first light input end (101) is emitted toward the first total reflection surface (201), and is emitted from the light output surface (3) after being totally reflected therefrom; the light entering through the second light input end (102) is emitted toward the second total reflection surface (202), and is emitted from the light output surface (3) after being totally reflected therefrom.

2. The function-multiplexing optical system according to claim 1, wherein: The number of the first total reflection surface (201) and the number of the second total reflection surface (202) are both multiple, and the multiple first total reflection surfaces (201) and the multiple second total reflection surfaces (202) are alternately arranged in the left-right direction.

3. The function-multiplexing optical system according to claim 2, wherein: The projection height of the first total reflection surface (201) in the up-down direction is greater than or equal to the projection height of the light-emitting surface (3) in the up-down direction, and the projection height of the second total reflection surface (202) in the up-down direction is greater than or equal to the projection height of the light-emitting surface (3) in the up-down direction.

4. The function-multiplexing optical system according to claim 1, wherein: A plurality of total reflection groups (203) are provided on one end of the light guide unit (2), and the plurality of total reflection groups (203) are arranged in sequence along the left-right direction. Each of the total reflection groups (203) is composed of two first total reflection surfaces (201) and two second total reflection surfaces (202) arranged alternately and spaced along the up-down and left-right directions, forming a two-row and two-column arrangement.

5. The function-multiplexing optical system according to claim 1, wherein: The first total reflection surface (201) and the second total reflection surface (202) are connected via a connecting surface (204).

6. The function-multiplexing optical system according to claim 1, wherein: The included angle between the first total reflection surface (201) and the incident light direction is 40° to 50°, and the included angle between the second total reflection surface (202) and the incident light direction is 40° to 50°.

7. The function-multiplexing optical system according to claim 1, wherein: A light distribution pattern is provided on the first total reflection surface (201) and / or the second total reflection surface (202).

8. The function-multiplexing optical system according to claim 1, wherein: The invention also includes a first light source (4) and a second light source (5), wherein the first light source (4) and the second light source (5) have different light colors, the first light source (4) is arranged at the focus of the first light incident end (101), and the second light source (5) is arranged at the focus of the second light incident end (102).

9. The function-multiplexing optical system according to claim 1, wherein: The first light incident end (101) and / or the second light incident end (102) are in the form of a concentrator and / or a collimator.

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

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