Optical system and vehicle lamp

Abstract

The utility model belongs to the technical field of car lamps, and particularly relates to an optical system and a car lamp, the optical system comprises a light inlet, two reflection units and a light outlet which are sequentially arranged along the direction of a light outlet path, at least one of the two reflection units is composed of a plurality of first total reflection surfaces and a plurality of second total reflection surfaces, the first total reflection surfaces and the second total reflection surfaces are alternately arranged, and one reflection unit is parallel to any one of the first total reflection surfaces or the second total reflection surfaces. Incident light is totally reflected by the reflection units and one group of surfaces in the combined surfaces parallel to the reflection units, and then the overall light emitting width is changed, so that the projection distance of the two reflection units is designed according to actual requirements, the width of a light outlet can be adjusted, and by adopting the extremely simple light outlet design, the optical system is high in lighting effect and uniform in lighting, and the dynamic flowing water effect can be achieved.

Description

Technical Field

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

[0002] With the rapid development of automotive lighting technology, users' pursuit of lighting shapes has become increasingly diverse, and aesthetics has become a major consideration. Therefore, a minimalist appearance has become the development direction of various OEMs. Minimalistic light output and uniform lighting are currently difficult issues that need to be overcome in the field of automotive technology. Currently, most mainstream solutions use thick-walled parts, reflectors, or light guides.

[0003] In traditional projects, the width of the light outlet is generally around 5mm to 12mm. When the width of the light outlet is larger or smaller, the light outlet is affected by factors such as modeling space, efficiency, power consumption, heat, and cost, and it is impossible to achieve high efficiency and high uniformity in light output.

[0004] Existing technology can use light guides to narrow the light outlet width to approximately 4mm, but the lighting effect is far inferior to solutions using thick-walled components, and the dynamic flowing effect cannot be achieved. Therefore, due to the limitations of light efficiency, the light outlet height cannot be extremely small, such as less than 5mm. Furthermore, due to lighting uniformity and power consumption issues, the light outlet height cannot be extremely large, such as greater than 12mm. However, as users' demands for automotive lighting aesthetics diversify, how to maximize or minimize the light outlet width without being affected by various factors is an urgent problem that researchers in this field need to solve. Utility Model Content

[0005] In view of this, in order to solve the problems existing in the prior art, the purpose of the present invention is to provide an optical system and a car light that can meet the needs of extremely large or extremely small light outlet widths as needed, with a very simple light outlet, high system light efficiency, uniform lighting, and the ability to achieve a dynamic flowing water effect.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An optical system and a vehicle lamp, comprising: a light inlet, two reflecting units and a light outlet arranged in sequence along a light output path;

[0008] At least one of the two reflection units is composed of a plurality of first total reflection surfaces and a plurality of second total reflection surfaces, the first total reflection surfaces and the second total reflection surfaces are arranged alternately, and one of the reflection units is parallel to either the first total reflection surface or the second total reflection surface;

[0009] Among them, the projection distance of one of the reflecting units facing the light entrance on the first plane is H1, and the projection distance of the other reflecting unit facing the light exit on the first plane is H2. When H1≥H2, the width of the light entrance is greater than or equal to the width of the light exit; when H1<H2, the width of the light entrance is less than the width of the light exit.

[0010] The specific technical effect is that the positions of the two reflecting units can be interchanged, and at least one of the reflecting units is designed as a combined structure. Any set of total reflection surfaces in the combined reflecting unit is parallel to the other reflecting unit. Then, the incident light changes the overall light output width after total reflection by the reflecting unit and a set of surfaces in the combined surface parallel to it. Therefore, the projection distance of the two reflecting units on the first plane is designed according to actual needs, and the width of the light outlet can be adjusted to ensure that the light outlet width is maximized or minimized without affecting the light efficiency and power consumption cost. With this minimalist light outlet design, the optical system has high light efficiency, uniform lighting, and can achieve a dynamic flowing water effect.

[0011] Furthermore, the two reflecting units are respectively a first reflecting unit and a second reflecting unit, the first reflecting unit faces the light entrance, and the second reflecting unit faces the light exit.

[0012] The specific technical effect is: the projection distance of the first reflection unit on the first plane is H1, the projection distance of the second reflection unit on the first plane is H2, the light is incident from the light entrance, first reflected by the first reflection unit to the second reflection unit, and then emitted from the light exit after being reflected by the second reflection unit, and when H1 ≥ H2, the width of the light entrance is greater than or equal to the width of the light exit, then the width of the light exit is a narrow light exit; when H1 < H2, the width of the light entrance is less than the width of the light exit, then the width of the light exit is a wide light exit.

[0013] Furthermore, the two reflecting units are respectively a first reflecting unit and a second reflecting unit, the first reflecting unit faces the light exit, and the second reflecting unit faces the light entrance.

[0014] The specific technical effect is: the positions of the first reflecting unit and the second reflecting unit are replaced with each other, and at this time the projection distance of the second reflecting unit on the first plane is H1, and the projection distance of the first reflecting unit on the first plane is H2, and the light is incident from the light entrance and first reflected by the second reflecting unit to the first reflecting unit, and then emitted from the light exit after being reflected by the first reflecting unit, and when H1≥H2, the width of the light entrance is greater than or equal to the width of the light exit, and the width of the light exit is a narrow light exit; when H1<H2, the width of the light entrance is less than the width of the light exit, and the width of the light exit is a wide light exit.

[0015] Furthermore, the two reflection units are both arranged in an inclined state.

[0016] The specific technical effect is that the inclined reflection unit can capture and reflect light more effectively, reduce light waste, improve light utilization efficiency, and the angle between the reflection unit and the incoming and outgoing light can be adjusted according to actual needs.

[0017] Furthermore, it also includes a light input structure and a light output structure, the light input structure, the two reflective units and the light output structure are arranged in sequence along the light output path direction, the light input port is located on the end of the light input structure away from the reflective unit, and the light output port is located on the end of the light output structure away from the reflective unit.

[0018] Furthermore, it also includes a light-concentrating structure, which is arranged on an end of the light-incident structure away from the reflective unit.

[0019] Furthermore, it also includes: a light source, which is arranged on a side of the light-focusing structure away from the light-incident structure.

[0020] The specific technical effect is that the light emitted by the light source is collimated into parallel light or approximately parallel light through the focusing structure and then emitted to the light incident structure.

[0021] Furthermore, both of the reflection units are provided with light distribution patterns.

[0022] The specific technical effect is that the design of the light distribution pattern can improve the uniformity of the emitted light.

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

[0024] The beneficial effects of the utility model are:

[0025] The positions of the two reflecting units can be interchanged, and at least one of the reflecting units is designed as a combined structure. Any set of total reflection surfaces in the combined reflecting unit is parallel to the other reflecting unit. Then, after the incident light passes through the reflecting unit and a set of surfaces in the combined surface parallel to it, the overall light output width is changed. Therefore, the projection distance of the two reflecting units on the first plane is designed according to actual needs, and the width of the light outlet can be adjusted to ensure that the light outlet width is maximized or minimized without affecting the light efficiency and power consumption cost. With this minimalist light outlet design, the optical system has high light efficiency, uniform lighting, and can achieve a dynamic flowing water effect.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model;

[0029] Figure 2 yes Figure 1 The main view;

[0030] Figure 3 This is a light path diagram of the optical structure of Example 2 of the present utility model;

[0031] Figure 4 This is a light path diagram of the optical structure of Example 3 of the present utility model;

[0032] Figure 5 1 is a schematic structural diagram of the optical structure of Example 4 of the present utility model;

[0033] Figure 6 yes Figure 5 The main view;

[0034] Figure 7 This is a light path diagram of the optical structure of Example 5 of the present utility model.

[0035] In the picture:

[0036] 1. Reflection unit; 11. First reflection unit; 12. Second reflection unit; 13. First total reflection surface; 14. Second total reflection surface; 2. Light inlet; 3. Light outlet; 4. Light inlet structure; 5. Light outlet structure; 6. Light focusing structure; 7. Light source. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] An optical system and a vehicle lamp, comprising a light inlet 2, two reflective units 1, and a light outlet 3, arranged sequentially along a light output path; at least one of the two reflective units 1 is composed of a plurality of first total reflection surfaces 13 and a plurality of second total reflection surfaces 14, the first total reflection surfaces 13 and the second total reflection surfaces 14 being arranged alternately; and one of the reflective units 1 is parallel to either the first total reflection surface 13 or the second total reflection surface 14.

[0039] Among them, the projection distance of a reflecting unit 1 facing the light input port 2 on the first plane is H1, and the projection distance of another reflecting unit 1 facing the light output port 3 on the first plane is H2. When H1≥H2, the width of the light input port 2 is greater than or equal to the width of the light output port 3. When H1<H2, the width of the light input port 2 is less than the width of the light output port 3.

[0040] It also includes a light-focusing structure 6, a light-input structure 4 and a light-output structure 5. The light-input structure 4, the two reflective units 1 and the light-output structure 5 are arranged in sequence along the light-output path. The light inlet 2 is located on the end of the light-input structure 4 away from the reflective unit 1, the light outlet 3 is located on the end of the light-output structure 5 away from the reflective unit 1, and the light-focusing structure 6 is arranged on the end of the light-input structure 4 away from the reflective unit 1.

[0041] The light source 7 is further provided on a side of the light-collecting structure 6 away from the light-incident structure 4 .

[0042] It should be noted here that the light emitted by the light source 7 is collimated into parallel light or approximately parallel light by the light-focusing structure 6 and then emitted to the light-incident structure 4 .

[0043] The two reflecting units 1 are both arranged in an inclined state.

[0044] It should be noted here that the inclined reflection unit 1 can capture and reflect light more effectively, reduce light waste, improve light utilization efficiency, and the angle between the reflection unit 1 and the incoming and outgoing light can be adjusted according to actual needs.

[0045] It should be noted that the positions of the two reflecting units 1 can be interchanged, and at least one reflecting unit 1 is designed as a combined structure. Any group of total reflection surfaces in the combined reflecting unit 1 is parallel to the other reflecting unit 1. The incident light changes the overall light output width after total reflection by the reflecting unit 1 and a group of combined surfaces parallel to it. Therefore, the projection distance of the two reflecting units 1 on the first plane is designed according to actual needs, and the width of the light outlet 3 can be adjusted to ensure that the width of the light outlet 3 is maximized or minimized without affecting the light efficiency and power consumption cost. With this minimalist light outlet 3 design, the optical system has high light efficiency, uniform lighting, and can achieve a dynamic flowing water effect.

[0046] The optical system of the present invention can adjust the angle between the first total reflection surface 13 and the second total reflection surface 14, as well as their respective dimensions, sizes, and proportions according to actual needs, so as to meet the needs of an extremely small light outlet 3 (the width of the light outlet 3 is ≤5mm) or an extremely large light outlet 3 (the width of the light outlet 3 is ≥12mm) without being affected by factors such as modeling space, efficiency, power consumption, heat, and cost. In addition, since the optical system has high light efficiency and uniform lighting, a dynamic flowing water effect can also be achieved in the case of an extremely small light outlet 3.

[0047] Both reflective units 1 are provided with light distribution patterns.

[0048] It should be noted here that designing the light distribution pattern can improve the uniformity of the emitted light.

[0049] The two reflective units 1 are respectively a first reflective unit 11 and a second reflective unit 12 . The first reflective unit 11 faces the light entrance 2 , and the second reflective unit 12 faces the light exit 3 .

[0050] At this time, the projection distance of the first reflection unit 11 on the first plane is H1, and the projection distance of the second reflection unit 12 on the first plane is H2. The light incident from the light input port 2 is first reflected by the first reflection unit 11 to the second reflection unit 12, and then emitted from the light output port 3 after being reflected by the second reflection unit 12. When H1≥H2, the width of the light input port 2 is greater than or equal to the width of the light output port 3, and the width of the light output port 3 is a narrow light output port 3; when H1<H2, the width of the light input port 2 is less than the width of the light output port 3, and the width of the light output port 3 is a wide light output port 3.

[0051] Example 1:

[0052] like Figures 1 to 2 As shown, the light entrance 2 is on the left, the first reflection unit 11 faces the light entrance 2, and the incident light is projected onto the first reflection unit 11 from left to right. The first reflection unit 11 is arranged in an inclined surface, and the angle between the first reflection unit 11 and the horizontal plane is approximately 40° to 50°. The second reflection unit 12 faces the light exit 3, and the light exit 3 is on the right. The second reflection unit 12 is arranged in a combined surface, and the angle between the second reflection unit 12 and the horizontal plane is approximately 40° to 50°. The second reflection unit 12 is composed of a plurality of first total reflection surfaces 13 and a plurality of second total reflection surfaces 14. The first total reflection surfaces 13 of the first reflection unit 11 and the second reflection unit 12 are parallel to each other. The projection distance of the first reflection unit 11 on the first plane is H1, and the projection distance of the second reflection unit 12 on the first plane is H2. H1<H2, so this embodiment is a design for expanding the width of the light exit 3. Figure 2 The first plane is shown as a vertical plane.

[0053] The light path of this embodiment is: the light emitted by the LED light source 7 passes through the focusing structure 6 and then passes through the light entrance 2 parallel to enter the light entrance structure 4 from left to right, and hits the first reflection unit 11. Since the first total reflection surfaces 13 of the first reflection unit 11 and the second reflection unit 12 are parallel to each other, the light is totally reflected by the first reflection unit 11 and hits the first total reflection surface 13 of the second reflection unit 12. After being totally reflected by the first total reflection surface 13, it passes through the light exit structure 5 and is emitted from the light exit 3. The width of the light entrance 2 is smaller than the width of the light exit 3, and the width of the light exit 3 is adjusted to a wide light exit 3. When the width of the light exit 3 is adjusted, high light efficiency and high uniformity of the light can be achieved.

[0054] Example 2:

[0055] like Figure 3 As shown, the difference from Example 1 is that the angle between the first reflecting unit 11 and the horizontal plane is about 20° to 30°, and the angle between the second reflecting unit 12 as a whole and the horizontal plane is about 20° to 30°. Compared with Example 1 in which the incident light hits the first reflecting unit 11 horizontally, the incident light in this embodiment has an angle with the horizontal direction. In this embodiment, the angle between the incident light and the first reflecting unit 11 is smaller than the angle between the incident light and the first reflecting unit 11 in Example 1. The projection distance of the first reflecting unit 11 on the first plane is H1, and the projection distance of the second reflecting unit 12 on the first plane is H2. H1<H2, so this embodiment is a design for expanding the width of the light outlet 3, as shown in FIG. Figure 3 The first plane shown is a vertical plane. The optical structure 1 of the present invention can adjust the angle between the first reflecting unit 11 or the second reflecting unit 12 and the incident light or the outgoing light according to actual needs.

[0056] Example 3:

[0057] like Figure 4 As shown, the difference from Example 1 is that: the light entrance 2 is at the top, the first reflection unit 11 faces the light entrance 2, the incident light is vertically projected from top to bottom to the first reflection unit 11, the first reflection unit 11 is arranged in a combined surface, the first reflection unit 11 is composed of a plurality of first total reflection surfaces 13 and a plurality of second total reflection surfaces 14, the second reflection unit 12 faces the light exit 3, the light exit 3 is at the bottom, the second reflection unit 12 is arranged in an inclined surface, the second reflection unit 12 is parallel to the first total reflection surface 13 of the first reflection unit 11, the projection distance of the first reflection unit 11 on the first plane is H1, the projection distance of the second reflection unit 12 on the first plane is H2, H1<H2, then this embodiment is a design for expanding the width of the light exit 3, as shown in FIG. Figure 4 The first plane shown is a horizontal plane.

[0058] 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.

[0059] The present invention also has the following implementation methods based on the above:

[0060] The two reflecting units 1 are respectively a first reflecting unit 11 and a second reflecting unit 12 . The first reflecting unit 11 faces the light exit 3 , and the second reflecting unit 12 faces the light entrance 2 .

[0061] At this time, the positions of the first reflecting unit 11 and the second reflecting unit 12 are replaced with each other, and the projection distance of the second reflecting unit 12 on the first plane is H1, and the projection distance of the first reflecting unit 11 on the first plane is H2. The light is incident from the light input port 2 and first reflected by the second reflecting unit 12 to the first reflecting unit 11, and then emitted from the light output port 3 after being reflected by the first reflecting unit 11. When H1≥H2, the width of the light input port 2 is greater than or equal to the width of the light output port 3, and the width of the light output port 3 is a narrow light output port 3; when H1<H2, the width of the light input port 2 is less than the width of the light output port 3, and the width of the light output port 3 is a wide light output port 3.

[0062] Example 4:

[0063] like Figures 5 and 6 As shown,

[0064] The difference from Example 1 is that:

[0065] The light entrance 2 is at the bottom, the second reflection unit 12 faces the light entrance 2, and the incident light is vertically projected from bottom to top toward the second reflection unit 12. The second reflection unit 12 is arranged in an inclined surface, and the first reflection unit 11 is arranged in a combined surface. The first reflection unit 11 is composed of a plurality of first total reflection surfaces 13 and a plurality of second total reflection surfaces 14. The first reflection unit 11 faces the light exit 3, and the light exit 3 is at the top. The second reflection unit 12 is parallel to the first total reflection surface 13 of the first reflection unit 11. The projection distance of the second reflection unit 12 on the first plane is H1, and the projection distance of the first reflection unit 11 on the first plane is H2. H1>H2, so this embodiment is a design for reducing the width of the light exit 3. Figure 6 The first plane shown is a horizontal plane.

[0066] Example 5:

[0067] like Figure 7 As shown,

[0068] The difference from Example 4 is that:

[0069] The light entrance 2 is at the bottom, the second reflection unit 12 faces the light entrance 2, the incident light is vertically projected from bottom to top toward the second reflection unit 12, the second reflection unit 12 is arranged in a combined surface, the second reflection unit 12 is composed of a plurality of first total reflection surfaces 13 and a plurality of second total reflection surfaces 14, the first reflection unit 11 is arranged in an inclined surface, the first reflection unit 11 faces the light exit 3, the light exit 3 is at the top, the first total reflection surfaces 13 of the first reflection unit 11 and the second reflection unit 12 are parallel to each other, the projection distance of the second reflection unit 12 on the first plane is H1, the projection distance of the first reflection unit 11 on the first plane is H2, H1>H2, then this embodiment is a design for reducing the width of the light exit 3, as shown in FIG. Figure 7 The first plane shown is a horizontal plane.

[0070] A vehicle lamp, comprising an optical system as described in any one of the above items.

[0071] In summary, the beneficial effects of the present invention are:

[0072] The positions of the two reflecting units 1 can be interchanged, and at least one reflecting unit 1 is designed as a combined structure. Any group of total reflection surfaces in the combined reflecting unit 1 is parallel to the other reflecting unit 1. Then, after the incident light passes through the reflecting unit 1 and a group of combined surfaces parallel to it, the overall light output width is changed. Therefore, the projection distance of the two reflecting units 1 on the first plane is designed according to actual needs, and the width of the light outlet 3 can be adjusted to ensure that the width of the light outlet 3 is maximized or minimized without affecting the light efficiency and power consumption cost. With this minimalist light outlet 3 design, the optical system has high light efficiency, uniform lighting, and can achieve a dynamic flowing water effect.

[0073] The various devices selected in this application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0074] In the description of the embodiments of the present invention, unless otherwise 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 or electrical connections; direct connections 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.

[0075] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0076] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make 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 content of the specification, but must be determined according to the scope of the claims.

Claims

1. An optical system, characterized in that: include: A light inlet (2), two reflective units (1) and a light outlet (3) are sequentially arranged along the light outlet path. At least one of the two reflection units (1) is composed of a plurality of first total reflection surfaces (13) and a plurality of second total reflection surfaces (14), wherein the first total reflection surfaces (13) and the second total reflection surfaces (14) are alternately arranged, and one of the reflection units (1) is parallel to either the first total reflection surface (13) or the second total reflection surface (14). The projection distance of one of the reflection units (1) toward the light entrance (2) on the first plane is H1, and the projection distance of another of the reflection units (1) toward the light exit (3) on the first plane is H2. When H1≥H2, the width of the light entrance (2) is greater than or equal to the width of the light exit (3); and when H1<H2, the width of the light entrance (2) is less than the width of the light exit (3).

2. An optical system as claimed in claim 1, characterized in that The two reflecting units (1) are respectively a first reflecting unit (11) and a second reflecting unit (12); the first reflecting unit (11) faces the light entrance (2), and the second reflecting unit (12) faces the light exit (3).

3. An optical system as claimed in claim 1, characterized in that The two reflection units (1) are respectively a first reflection unit (11) and a second reflection unit (12); the first reflection unit (11) faces the light outlet (3), and the second reflection unit (12) faces the light entrance (2).

4. An optical system as claimed in claim 1, characterized in that The two reflection units (1) are both arranged in an inclined state.

5. An optical system as claimed in claim 1, characterized in that The invention also includes a light input structure (4) and a light output structure (5), wherein the light input structure (4), the two reflective units (1) and the light output structure (5) are arranged in sequence along the light output path direction, the light input port (2) is located on the end of the light input structure (4) away from the reflective unit (1), and the light output port (3) is located on the end of the light output structure (5) away from the reflective unit (1).

6. An optical system as claimed in claim 5, characterized in that It also includes a light-concentrating structure (6), which is arranged on an end of the light-incident structure (4) away from the reflective unit (1).

7. An optical system as claimed in claim 6, characterized in that Also includes: A light source (7) is arranged on a side of the light-collecting structure (6) away from the light-incident structure (4).

8. An optical system as claimed in claim 1, characterized in that Both of the reflection units (1) are provided with light distribution patterns.

9. A vehicle lamp, characterized in that: The optical system comprises an optical system as claimed in any one of claims 1 to 8.

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