Transparent reflective optical system
By adopting a transparent reflective optical system in the reflective headlights and using total reflection technology of collimation units and reflective units, the problems of low optical performance and high production cost caused by the aluminum plating process are solved, and efficient optical performance and the effect of reducing production costs are achieved.
Patent Information
- Application Number
- CN202420912012.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-04-28
AI Technical Summary
The existing reflective headlights are reflected through the aluminum plating process, but due to problems such as roughness of the aluminum plating surface, it affects optical performance, and the reflectivity of aluminum plating is low, which loses optical efficiency and increases production costs.
A transparent reflective optical system is adopted, including a collimation unit and a reflection unit, and the light is totally reflected through the first parabolic reflection unit to the imaging system. The imaging system reflects the light to the light outlet through the total reflection surface, achieving efficient reflection of the light.
It improves optical efficiency and optical performance, reduces production costs, and avoids miscellaneous light problems through internal total reflection, which greatly improves optical efficiency compared with the aluminum plating process.
Smart Images
Figure CN222634388U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile lighting, and in particular relates to a transparent reflective optical system. Background Art
[0002] Existing reflective headlights need to achieve the reflective function through aluminum plating. However, the aluminum plating process will cause stray light and other phenomena due to the roughness of the aluminum plating surface, affecting the optical performance. In addition, the reflectivity of aluminum plating is low, which will lose some optical efficiency. In addition, in order to achieve the aluminum plating process, the production steps will be increased, which increases the production cost. Therefore, in order to solve such problems, a transparent reflective optical system is proposed. 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 proposes a transparent reflective optical system, which has the advantages of avoiding the use of aluminum plating technology, improving optical efficiency and optical performance, and reducing production costs.
[0005] According to the transparent reflective optical system of the embodiment of the utility model, it includes: a line light source system and an imaging system; the line light source system is used to convert the light emitted by the light source into a line light source, the line light source system includes a collimating unit and a reflecting unit, the collimating unit is used to collimate the light, in the vertical plane, the contour line of the reflecting unit is a first parabola, the focus of the first parabola is located at point F, the reflecting unit is located in the light emitting direction of the collimating unit, the reflecting unit is used to totally reflect the light emitted by the collimating unit, and in the vertical plane, the reverse extension line of the light reflected by the reflecting unit converges at point F, the imaging system has a total reflection surface, the total reflection surface is located in the light emitting direction of the reflecting unit, the cross-section of the total reflection surface is a V-shaped structure, the total reflection surface is used to totally reflect the light emitted by the reflecting unit, in the vertical plane, the focus of the imaging system is located at point F, and the imaging system is used to image the line light source passing through point F.
[0006] According to an embodiment of the present invention, the reflection unit is formed by extending a first parabola along a normal direction.
[0007] According to one embodiment of the utility model, the reflecting unit is in the normal plane of the first parabola, the contour line of the reflecting unit is a first V-shaped contour line with an angle of 90 degrees, the reflecting unit is formed by sweeping the first V-shaped contour line along the first parabola, the number of the reflecting units is multiple, and the multiple reflecting units are arranged in an array along the horizontal direction.
[0008] According to one embodiment of the utility model, a refraction unit is formed on the light emitting surface of the reflection unit. In the vertical plane, the contour line of the refraction unit is an arc with point F as the center. The arc is stretched along the horizontal direction to form the refraction unit. The refraction unit is used to complete the propagation of light in the medium.
[0009] According to an embodiment of the utility model, the imaging system further comprises a refractive surface, the refractive surface is arranged opposite to the total reflection surface, and the refractive surface is located between the total reflection surface and the reflection unit.
[0010] According to one embodiment of the utility model, in a vertical plane, the contour line of the total reflection surface is a second parabola, the focus of the second parabola is located at point F, and in a normal plane at any point on the second parabola, the contour line of the total reflection surface is a second V-shaped contour line with an angle of 90 degrees, and the total reflection surface is formed by sweeping the second V-shaped contour line along the second parabola.
[0011] According to an embodiment of the present invention, there are multiple total reflection surfaces, and the multiple total reflection surfaces are arranged in an array.
[0012] According to an embodiment of the utility model, in the vertical plane, the contour line of the refractive surface is a curve approximately parallel to the contour line of the total reflection surface in the vertical plane, and the curve is stretched in the horizontal direction to form the refractive surface.
[0013] According to an embodiment of the present invention, the collimating unit is a condenser or a reflector or a lens.
[0014] According to an embodiment of the present invention, the line light source system and the imaging system are integrally formed.
[0015] The beneficial effect of the utility model is that the utility model adopts a collimating unit to collimate the light emitted by the light source, so that the light is parallel light or nearly parallel light and propagates to the reflecting unit, so that the light emitted by the light source can almost reach the reflecting unit, thereby improving the utilization rate of the light emitted by the light source. At this time, the collimated light is totally reflected to the imaging system by the reflecting unit, and the imaging system totally reflects the light to the light outlet through the total reflection surface, thereby realizing the reflection of the light, and by setting the focus of the imaging system and the reverse extension line of the light reflected by the reflecting unit at point F, the imaging system images the horizontal focal line of point F, thereby improving the clarity of the imaging light type. The reflection of this solution is all achieved through internal total reflection, so compared with the aluminum plating process on the injection molded parts, this solution greatly improves the optical efficiency.
[0016] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.
[0017] 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
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments of the present invention, in which:
[0019] Figure 1 It is a side view schematic diagram of the overall structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the structure of the reflection unit of the utility model;
[0021] Figure 3 It is a side cross-sectional schematic diagram of the overall structure of the utility model;
[0022] Reference numerals:
[0023] 11. Collimation unit; 12. Reflection unit; 13. Refraction unit; 21. Refraction surface; 22. Total reflection surface. DETAILED DESCRIPTION
[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0025] In the description of the present utility model, it is necessary to understand 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] The transparent reflective optical system according to an embodiment of the present utility model will be described in detail below with reference to the accompanying drawings.
[0028] like Figure 1-Figure 3 As shown, according to the transparent reflective optical system of the embodiment of the utility model, it includes: a line light source system and an imaging system; the line light source system is used to convert the light emitted by the light source into a line light source, the line light source system includes a collimating unit 11 and a reflecting unit 12, the collimating unit 11 is used to collimate the light, in the vertical plane, the contour line of the reflecting unit 12 is a first parabola, the focus of the first parabola is located at point F, the reflecting unit 12 is located in the light emitting direction of the collimating unit 11, the reflecting unit 12 is used to totally reflect the light emitted by the collimating unit 11, and in the vertical plane, the reverse extension line of the light reflected by the reflecting unit 12 converges at point F, the imaging system has a total reflection surface 22, the total reflection surface 22 is located in the light emitting direction of the reflecting unit 12, the cross-section of the total reflection surface 22 is a V-shaped structure, the total reflection surface 22 is used to totally reflect the light emitted by the reflecting unit 12, in the vertical plane, the focus of the imaging system is located at point F, and the imaging system is used to image the line light source passing through point F.
[0029] In this embodiment, the collimating unit 11 is used to collimate the light emitted by the light source, so that the light is parallel light or approximately parallel light and propagates to the reflecting unit 12, so that the light emitted by the light source can almost reach the reflecting unit 12, thereby improving the utilization rate of the light emitted by the light source. At this time, the collimated light is totally reflected to the imaging system by the reflecting unit 12, and the imaging system totally reflects the light to the light outlet through the total reflection surface 22, thereby realizing the reflection of the light, and by setting the focus of the imaging system and the reverse extension line of the light reflected by the reflecting unit 12 at point F, the imaging system images the horizontal focal line of point F, thereby improving the clarity of the imaging light type, and because the imaging system includes a V-shaped structure, it is avoided to use an aluminum plating process to realize reflection, thereby reducing the steps of the aluminum plating process and reducing the production cost; in addition, the reflectivity of the aluminum plating process does not exceed 80%, and the reflection of this solution is realized by internal total reflection, so compared with the aluminum plating process on the injection molded parts, this solution greatly improves the optical efficiency.
[0030] The reflection unit 12 is formed by extending a first parabola along a normal direction, so as to totally reflect the light collimated by the collimation unit 11 to the imaging system.
[0031] In this embodiment, the angle setting of the collimating unit 11 and the reflecting unit 12 and the design of the first parabola ensure that most of the light emitted from the collimating unit 11 is totally reflected on the surface of the reflecting unit 12 .
[0032] The reflecting unit 12 is in the normal plane of the first parabola, and the contour line of the reflecting unit 12 is a first V-shaped contour line with an angle of 90 degrees. The reflecting unit 12 is formed by sweeping the first V-shaped contour line along the first parabola. There are multiple reflecting units 12, and the multiple reflecting units 12 are arranged in an array in the horizontal direction to meet different light-emitting sizes.
[0033] In this embodiment, a reflection unit 12 is formed by setting a first V-shaped contour line with an angle of 90 degrees and sweeping the first V-shaped contour line along a first parabola. In this process, the light is reflected twice, thereby reducing the incident angle required for total reflection and achieving small-angle incidence.
[0034] The collimating unit 11 and the reflecting unit 12 are an integral whole and can be integrally formed by injection molding or the like. A refractive unit 13 is formed on the light emitting surface of the reflecting unit 12. In the vertical plane, the contour line of the refractive unit 13 is an arc with point F as the center. The arc is stretched in the horizontal direction to form the refractive unit 13. The refractive unit 13 is used to complete the propagation of light in the medium to reduce the change in the propagation direction of the light.
[0035] Furthermore, the refraction unit 13 is an arc with point F as the center, which is stretched in the horizontal direction to form a base surface, and a diffusion pattern is attached to the base surface to improve the uniformity of the light emitted after passing through the refraction unit 13.
[0036] The imaging system further includes a refractive surface 21 , which is arranged opposite to the total reflection surface 22 , and is located between the total reflection surface 22 and the reflection unit 12 .
[0037] In the vertical plane, the contour line of the total reflection surface 22 is a second parabola, and the focus of the second parabola is located at point F. In the normal plane of any point on the second parabola, the contour line of the total reflection surface 22 is a second V-shaped contour line with an angle of 90 degrees. The total reflection surface 22 is formed by sweeping the second V-shaped contour line along the second parabola.
[0038] In this embodiment, when light enters the imaging system from the line light source system, it is refracted by the refractive surface 21 and reaches the total reflection surface 22. After two reflections, it is emitted from the refractive surface 21, which reduces the required angle of total reflection and achieves small-angle incidence.
[0039] There are multiple total reflection surfaces 22 , and the multiple total reflection surfaces 22 can be arranged in an array along an oblique direction, a curved direction, or a vertical direction to meet different light-emitting sizes.
[0040] In the vertical plane, the contour line of the refractive surface 21 is a curve that is approximately parallel to the contour line of the total reflection surface 22 in the vertical plane. The curve is stretched in the horizontal direction to form the refractive surface 21. The stretching direction of the refractive surface 21 is parallel to the array direction of the total reflection surface 22. The refractive surface 21 has cylindrical characteristics.
[0041] In the vertical plane, the contour line of the refractive surface 21 and the second parabola together have the effect that the light emitted from the focal point F is refracted by the contour line of the refractive surface, reflected by the second parabola, and refracted by the contour line of the refractive surface again, and the light rays are emitted parallel to each other.
[0042] The collimating unit 11 is any optical unit capable of forming parallel light, such as a condenser, a reflector, or a lens.
[0043] The line light source system and the imaging system are integrally formed, specifically by injection molding or other methods, which is convenient to produce and has low production costs; it reduces assembly parts, reduces assembly tolerances, improves the stability of optical performance, reduces assembly area, and improves applicability.
[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0045] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A transparent reflective optical system, characterized in that: include: A line light source system, the line light source system is used to convert light emitted by a light source into a line light source, the line light source system comprises a collimating unit (11) and a reflecting unit (12), the collimating unit (11) is used to collimate light, in a vertical plane, the contour line of the reflecting unit (12) is a first parabola, the focus of the first parabola is located at point F, the reflecting unit (12) is located in the light emitting direction of the collimating unit (11), the reflecting unit (12) is used to totally reflect the light emitted by the collimating unit (11), and in the vertical plane, the reverse extension line of the light reflected by the reflecting unit (12) converges at point F; An imaging system, the imaging system comprising a total reflection surface (22), the total reflection surface (22) being located in the light emitting direction of a reflection unit (12), the cross section of the total reflection surface (22) being a V-shaped structure, the total reflection surface (22) being used for totally reflecting the light emitted by the reflection unit (12), the focus of the imaging system being located at point F in a vertical plane, and the imaging system being used for imaging a line light source passing through point F.
2. The transparent reflective optical system according to claim 1, characterized in that: The reflection unit (12) is formed by extending a first parabola along a normal direction.
3. The transparent reflective optical system according to claim 1, characterized in that: The reflection unit (12) is in a normal plane of the first parabola, the contour line of the reflection unit (12) is a first V-shaped contour line with an angle of 90 degrees, the reflection unit (12) is formed by sweeping the first V-shaped contour line along the first parabola, the number of the reflection units (12) is multiple, and the multiple reflection units (12) are arranged in an array along the horizontal direction.
4. The transparent reflective optical system according to claim 3, characterized in that: A refractive unit (13) is formed on the light emitting surface of the reflective unit (12); in a vertical plane, the contour line of the refractive unit (13) is an arc with point F as the center; the arc is stretched in a horizontal direction to form the refractive unit (13); and the refractive unit (13) is used to complete the propagation of light in a medium.
5. The transparent reflective optical system according to claim 4, characterized in that: The imaging system further comprises a refractive surface (21), wherein the refractive surface (21) is arranged opposite to the total reflection surface (22), and the refractive surface (21) is located between the total reflection surface (22) and the reflection unit (12).
6. The transparent reflective optical system according to claim 5, characterized in that: In a vertical plane, the contour line of the total reflection surface (22) is a second parabola, the focus of the second parabola is located at point F, and in a normal plane at any point on the second parabola, the contour line of the total reflection surface (22) is a second V-shaped contour line with an angle of 90 degrees, and the total reflection surface (22) is formed by sweeping the second V-shaped contour line along the second parabola.
7. The transparent reflective optical system according to claim 6, characterized in that: There are a plurality of total reflection surfaces (22), and the plurality of total reflection surfaces (22) are arranged in an array.
8. The transparent reflective optical system according to claim 7, characterized in that: In the vertical plane, the contour line of the refractive surface (21) is a curve that is approximately parallel to the contour line of the total reflection surface (22) in the vertical plane, and the curve is stretched in the horizontal direction to form the refractive surface (21).
9. The transparent reflective optical system according to claim 1, characterized in that: The collimating unit (11) is a condenser or a reflector or a lens.
10. The transparent reflective optical system according to claim 1, wherein: The line light source system and the imaging system are integrally formed.