Large-spacing multi-mirror optical system
Through a large-spacing multi-reflector optical system and a reflector group formed by parabolic rotation, the light source distance and the light-emitting surface are expanded, which solves the problem of difficult adjustment of the light source distance and the light-emitting surface in the existing technology and expands the illumination range.
Patent Information
- Application Number
- CN202422769963.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-14
AI Technical Summary
It is difficult to effectively expand the light source distance and the size of the light-emitting surface with existing technologies, which makes it difficult to adjust the light source distance and the size of the light-emitting surface.
A large-pitch multi-reflector optical system is adopted, including a first reflector and a second reflector. The first reflector is a curved surface formed by parabolic rotation, and the second reflector is a curved surface. The reflecting surface faces the light source. The light emitted by the light source is reflected by the first reflector and returns to the focus and enters the second reflector, forming parallel light, thereby realizing light expansion.
By simplifying the structure, the illumination range is broadened, and the light source distance and the coverage area of the luminous surface are increased.
Smart Images
Figure CN223331550U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicle lamp structures, and in particular to a large-spacing multi-reflector optical system. Background Art
[0002] With the advancement of automotive lighting technology, major OEMs are pursuing cost-saving strategies to use fewer LEDs to illuminate a larger light-emitting area. Many existing solutions broaden the light-emitting width and thus increase the light source distance by adding multiple fully reflective surfaces within the light guide, dividing and rearranging the light distribution. Most of these solutions utilize thick-walled light guides. The distance these optical solutions can achieve is closely related to the size of the light guide's light-emitting surface, making it difficult to adjust the light source distance and light-emitting surface size to a specific value. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art.
[0004] To this end, the utility model provides a large-spacing multi-reflector optical system.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A large-pitch multi-mirror optical system comprising:
[0007] light source, and
[0008] a second reflector, wherein the second reflector is a curved surface curved toward the light source, and a plane perpendicular to an extension direction of the second reflector is a second reference plane;
[0009] The first reflector is a curved surface formed by rotating a parabola in the first reference plane perpendicular to the second reference plane, and the reflective surface of the first reflector and the reflective surface of the second reflector are both arranged toward the light source.
[0010] Furthermore, a parabola formed by rotating the first reflector and located in the first reference plane is a first cross-sectional line, and a rotation axis of the first cross-sectional line passes through a focus of the first cross-sectional line.
[0011] Furthermore, the projection of the first reflector in the second reference plane is at least one arc-shaped line segment.
[0012] Furthermore, the first cross-section line is rotated about the reference axis at an angle less than or equal to 180°.
[0013] Furthermore, a projection of the second reflector in the second reference plane is a second cross-sectional line, the second cross-sectional line is a parabola, and the focus of the second cross-sectional line is located on the reference axis.
[0014] Furthermore, a pattern is provided on the reflective surface of the second reflector.
[0015] The beneficial effect of the present invention is that the light emitted through the focus is reflected by the first reflector and then returns to the focus along the original path and heads towards the second reflector, so that the emitted light is parallel light in the second reference plane. Since the first reflector extends and rotates along the reference axis, the focus of the second reflector coincides with the focus of the first reflector, so in the plane perpendicular to the second reference plane, the reflected light is also parallel light, so the present application achieves the expansion of the illumination range with a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] Figure 1 It is a structural diagram of the large-spaced multi-reflector optical system of the utility model.
[0018] Figure 2 It is a schematic projection diagram of the first reflector and the second reflector in the first reference plane in the utility model.
[0019] Figure 3 It is a light path diagram of the large-spacing multi-reflector optical system of the utility model within the plane of the second reference surface.
[0020] In the figure: 1, second reflector; 2, first reflector; 3, light source; 4, focus; 5, second section line; 6, first section line; 7, reference axis; 8, second reference plane; 9, first reference plane. DETAILED DESCRIPTION
[0021] 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.
[0022] 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.
[0023] 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.
[0024] A large-pitch multi-reflector optical system includes a first reflector 1, a second reflector 2 and a light source 3. The light source 3 is arranged between the second reflector 2 and the first reflector 1. The reflective surface on the second reflector 2 and the reflective surface on the first reflector 1 are arranged opposite to each other.
[0025] The projection of the second reflector 2 within the second reference plane 8 is a parabola, referred to as a second cross-sectional line 5. The light source 3 is disposed near one end of the second cross-sectional line 5. The second cross-sectional line 5 protrudes away from the light source 3. The second cross-sectional line 5 is stretched in a direction perpendicular to the second reference plane 8 to form the second reflector 2. The reflective surface of the second reflector 2 may be provided with a pattern.
[0026] A first reference plane 9 is arranged along the extension direction of the second reflector 2, and the first reference plane 9 is perpendicular to the second reference plane 8. A first section line 6 is arranged in the first reference plane 9, and the first section line 6 is also a parabola. The focus 4 of the second section line 5 coincides with the projection 4 of the focus 4 of the first section line 6 in the second reference plane 8. A reference axis 7 is arranged through the focus of the first section line 6 and perpendicular to the second reference plane 8. The first reflector 1 is a curved surface formed by rotating the first section line 6 around the reference axis 7.
[0027] It should be noted that the rotation angle of the first cross-section line 6 around the reference axis 7 is less than or equal to 180°, and the projection of the first reflector 1 in the second reference plane 8 is a plurality of circular arcs. In this embodiment, the projection of the first reflector 1 in the second reference plane 8 is two semicircular arcs, the center of which is the focus 4.
[0028] The light emitted from the focus 4 is reflected by the first reflector 1 to form parallel light in the first reference plane 9. Figure 2 As shown; the projection of the first reflector 1 in the second reference plane 8 is two semicircles. The light emitted from the center of the circle is reflected by the first reflector 1 and returns along the original path. These lights can be equivalent to a point light source 3 emitted from the center of the circle. Moreover, the focus 4 of the second reflector 2 coincides with the focus 4 of the first reflector 1. Therefore, the light reflected in the second reference plane 8 is also parallel light, as shown in FIG. Figure 3 In summary, the point light source 3 is reflected by the reflector group to form parallel light rays on two mutually perpendicular planes, illuminating a fairly large area.
[0029] Based on the above-described preferred embodiments of the present invention, and in accordance with 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, but must be determined according to the scope of the claims.
Claims
1. A large-pitch multi-mirror optical system, characterized in that: include, a light source (3), and a second reflector (2), wherein the second reflector (2) is a curved surface that bends toward the light source (3), and a plane perpendicular to the extension direction of the second reflector (2) is a second reference plane (8); A first reflector (1), wherein the first reflector (1) is a curved surface formed by parabola rotation within a first reference plane (9) perpendicular to a second reference plane (8), and the reflective surface of the first reflector (1) and the reflective surface of the second reflector (2) are both arranged toward the light source (3).
2. The large-pitch multi-mirror optical system according to claim 1, wherein: The parabola formed by rotating the first reflector (1) and located in the first reference plane (9) is a first cross-sectional line (6), and the rotation axis of the first cross-sectional line (6) passes through the focus (4) of the first cross-sectional line (6).
3. The large-pitch multi-mirror optical system according to claim 1, wherein: The projection of the first reflector (1) in the second reference plane (8) is at least one arc-shaped line segment.
4. The large-pitch multi-mirror optical system according to claim 2, wherein: The first cross-sectional line (6) is rotated about the reference axis (7) at an angle less than or equal to 180°.
5. The large-pitch multi-mirror optical system according to claim 2, wherein: The projection of the second reflector (2) in the second reference plane (8) is a second cross-sectional line (5), the second cross-sectional line (5) is a parabola, and the focus (4) of the second cross-sectional line (5) is located on the reference axis (7).
6. The large-pitch multi-mirror optical system according to claim 1, wherein: The reflecting surface of the second reflector (2) is provided with a pattern.