Micro-imaging system applied to headlamp function

Abstract

The utility model discloses a micro-imaging system applied to a headlamp function. The micro-imaging system comprises a collimation unit, an imaging unit, a light incidence unit and a reflection unit, the collimation unit is used for collimating light rays of the light source, the imaging unit is provided with a focus and used for carrying out imaging projection on light distribution of a vertical plane where the focus is located, the light inlet unit is located in the light emitting direction of the collimation unit, and the light inlet unit is located between the imaging unit and the collimation unit. The light incidence unit is used for gathering part of light rays collimated by the collimation unit to the position near a focus, the reflection unit is arranged between the light incidence unit and the imaging unit, and the focus of the imaging unit is located at the end, close to the imaging unit, of the reflection unit. The reflection unit is used for reflecting the other part of light collimated by the collimation unit to the plane where the focus is located. The micro-imaging system has the advantages that the lighting effect is improved, and the front-back distance of the micro-imaging system applied to the headlamp function is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle lamps, and in particular relates to a micro imaging system applied to the function of a headlamp. Background Art

[0002] The existing MLA optical system includes a light source, a collimating optical system, and a microlens array; it can obtain uniform light distribution and light types with various patterns. The optical principle is: the light emitted by the light source passes through the collimating optical system and is collimated into parallel light. After the parallel light passes through the light input unit group of the microlens array, it converges near the focus, and then passes through the imaging lens group to project the light at the focus and emit it. A pattern layer is set at the focus of the light input unit group and the imaging lens group, and finally the desired pattern can be imaged. However, this MLA optical system uses semiconductor processing technology, which is costly; and except for the imaged pattern, other parts of the light are blocked, resulting in low light efficiency. Therefore, in order to improve the utilization rate of light and reduce processing costs, a micro imaging system for headlight function 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 micro imaging system applied to the headlight function, and the micro imaging system applied to the headlight function has the advantage of improving the light effect of projection imaging.

[0005] According to the embodiment of the utility model, the micro imaging system used for the headlight function includes: a collimating unit, an imaging unit, a light input unit, and a reflecting unit; the collimating unit is used to collimate the light of the light source, the imaging unit has a focus, and the imaging unit is used to image and project the light distribution in the vertical plane where the focus is located, the light input unit is located in the light emitting direction of the collimating unit, the light input unit is located between the imaging unit and the collimating unit, the light input unit is used to gather part of the light collimated by the collimating unit near the focus, the reflecting unit is located between the light input unit and the imaging unit, the focus of the imaging unit is located at the end of the reflecting unit close to the imaging unit, and the reflecting unit is used to reflect another part of the light collimated by the collimating unit to the plane where the focus is located.

[0006] According to one embodiment of the utility model, the imaging unit includes a first imaging component and a second imaging component, the first imaging component and the second imaging component are both curved surfaces with focal points in planes perpendicular to each other, and the first imaging component and the second imaging component are used to adjust the angles of the light pattern in the horizontal and vertical directions.

[0007] According to an embodiment of the present invention, the reflection unit is an internal total reflection surface.

[0008] According to an embodiment of the present invention, the reflection unit, the light incident unit and the first imaging component are integrally formed.

[0009] According to an embodiment of the present invention, the reflection unit is an optical component with a certain reflectivity.

[0010] According to an embodiment of the present invention, the light incident unit and the collimating unit are integrally formed.

[0011] According to an embodiment of the present invention, the first imaging component and the second imaging component are integrally formed.

[0012] According to an embodiment of the present invention, a pattern layer is provided between the focus of the imaging unit and the light incident unit.

[0013] According to an embodiment of the present invention, the collimating unit is a condenser or a lens or a reflector.

[0014] According to an embodiment of the present invention, the number of the light incident units is multiple, and the number of the imaging units and the reflecting units is the same as the number of the light incident units and corresponds one to one.

[0015] The beneficial effect of the utility model is that the light-collecting unit of the utility model gathers part of the light emitted by the collimating unit near the focus of the imaging unit; the reflecting unit totally reflects the other part of the light emitted by the collimating unit on its surface or reflects it to the plane where the focus is located, so that the light intensity of the plane where the focus is located is higher and the light efficiency is improved; the light-incoming unit is used to realize the gathering of the collimated light, thereby shortening the front-to-back distance of the micro-imaging system used for the headlight function.

[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 when the reflective unit of the utility model is an optical component with reflectivity, and the first imaging component and the second imaging component are integrated;

[0020] Figure 2It is a side view schematic diagram of the overall structure when the reflection unit of the utility model is internal total reflection;

[0021] Figure 3 It is a side view schematic diagram of the overall structure when the reflective unit of the utility model is an optical component with reflectivity, and the first imaging component and the second imaging component are separate;

[0022] Figure 4 It is a side view schematic diagram of another form of the overall structure when the reflection unit of the utility model is internal total reflection;

[0023] Reference numerals:

[0024] 1. Collimation unit; 21. Light input unit; 22. Reflection unit; 31. First imaging component; 32. Second imaging component. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] 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.

[0028] The micro imaging system applied to the headlight function according to an embodiment of the present utility model will be described in detail below with reference to the accompanying drawings.

[0029] like Figure 1-Figure 4 As shown, the micro imaging system used for the headlight function according to the embodiment of the utility model includes: a collimating unit 1, an imaging unit, a light input unit 21, and a reflecting unit 22; the collimating unit 1 is used to collimate the light of the light source, the imaging unit has a focus, and the imaging unit is used to image and project the light distribution in the vertical plane where the focus is located, the light input unit 21 is located in the light emitting direction of the collimating unit 1, the light input unit 21 is located between the imaging unit and the collimating unit 1, the light input unit 21 is used to gather part of the light collimated by the collimating unit 1 to the vicinity of the focus, the reflecting unit 22 is arranged between the light input unit 21 and the imaging unit, the focus of the imaging unit is located at the end of the reflecting unit 22 close to the imaging unit, and the reflecting unit 22 is used to reflect another part of the light collimated by the collimating unit 1 to the plane where the focus is located.

[0030] When the collimating unit 1 is a single component and is a concentrator, the light-emitting surface of the concentrator can be a plane or can be formed by splicing multiple curved surfaces;

[0031] In this embodiment, the focus of the imaging unit is close to the reflecting unit 22, and the collimating unit 1 collimates the light emitted by the light source. The collimated light part is refracted by the light input unit 21 and converges the light near the focus of the imaging unit, and the other part of the light is reflected by the reflecting unit 22 and reaches the plane where the focus is located. The reflected and utilized part of the light increases the light intensity near the focus to a certain extent; in addition, the collimated light only passes through one refractive layer of the light input unit 21, and the light loss is small; and part of the light is also reflected and utilized by the reflecting unit 22, so the optical system has high light efficiency; the use of the light input unit 21 shortens the front and rear distance of the micro imaging system used for the headlight function.

[0032] The imaging unit includes a first imaging component 31 and a second imaging component 32. The first imaging component 31 and the second imaging component 32 are both curved surfaces with focal points in planes perpendicular to each other. The focal lengths of the first imaging component 31 and the second imaging component 32 can be adjusted respectively to adjust the angles of the light pattern in the horizontal and vertical directions.

[0033] In this embodiment, the first imaging component 31 is located between the reflection unit 22 and the second imaging component 32. The first imaging component 31 and the second imaging component 32 have the same focal point in mutually perpendicular planes. The first imaging component 31 and the second imaging component 32 can adjust their respective focal lengths according to the angle of the required light pattern, and a rectangular light pattern can be formed for the low beam.

[0034] The reflection unit 22 is an internal total reflection surface.

[0035] The reflection unit 22 , the light incident unit 21 and the first imaging component 31 are integrally formed.

[0036] In this embodiment, the reflection unit 22 is the total reflection surface at the bottom of the thick-walled part, and the total reflection surface can improve the utilization rate of light. The light incident unit 21 is formed at one end of the thick-walled part, and the first imaging component 31 is formed at the other end of the thick-walled part. By integrating the first imaging component 31 and the reflection unit 22, the formation of a refractive surface between the first imaging component 31 and the reflection unit 22 is avoided, thereby reducing the number of refractive surfaces, thereby reducing light loss and improving light efficiency; and the one-piece molding reduces the number of parts, and can be prepared by injection molding, which reduces tolerances, improves the assembly stability between different optical units, and improves the convenience of subsequent assembly.

[0037] The reflection unit 22 is an optical component with a certain reflectivity, and specifically can be a highlight plate with a relatively high reflectivity. The highlight plate is thin, thus reducing the thickness requirement of the reflection unit 22, thereby reducing the weight of the micro imaging system used for the headlight function.

[0038] The light input unit 21 and the collimating unit 1 are integrally formed; the first imaging component 31 and the second imaging component 32 are integrally formed.

[0039] In this embodiment, the light incident unit 21 and the collimating unit 1 are integrally formed, and the first imaging component 31 and the second imaging component 32 are integrally formed.

[0040] A pattern layer is provided between the focus of the imaging unit and the light incident unit 21 .

[0041] Specifically, when the micro imaging system applied to the headlight function is applied to the low beam, the end of the reflection unit 22 close to the imaging unit is provided with a light-dark cutoff line shape, and the end is located at the focus of the imaging unit.

[0042] In this embodiment, a pattern layer can be provided according to light emitting requirements to form light emitting surfaces with different patterns.

[0043] The collimating unit 1 is a condenser, a lens, a reflector or any other optical unit capable of collimating light.

[0044] The number of the light incident units 21 is plural, and the number of the imaging units and the reflecting units 22 is the same as that of the light incident units 21 and corresponds one to one.

[0045] In this embodiment, multiple light input units 21, reflection units 22 and imaging units are arranged in the light output direction of the collimating unit 1, that is, the light output surface is composed of small light-emitting surfaces projected by multiple imaging units, thereby improving the uniformity of the light pattern.

[0046] Both the reflective surface and the total reflective surface are in the shape of a light / dark cutoff line to form a low beam light pattern that meets regulations.

[0047] The light emitting surface of the collimating unit 1 can be a vertical plane or a Figure 2 or Figure 4 As shown, multiple focusing curved surfaces are formed on the light-emitting surface, and the number of the multiple focusing curved surfaces is the same as the number of the multiple light input units 21 and the positions correspond one to one, so that light can be gathered through the focusing curved surfaces so that most of the light can enter the light input units 21, avoiding a large amount of light being emitted from the gaps when there are gaps between the multiple light input units 21. The focusing curved surfaces improve the utilization rate of light.

[0048] 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.

[0049] 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 micro imaging system used for headlight function, characterized in that: include: A collimating unit (1), the collimating unit (1) being used to collimate light from a light source; An imaging unit, the imaging unit having a focus, and the imaging unit is used to perform imaging projection on a light distribution in a vertical plane where the focus is located; A light input unit (21), the light input unit (21) being located in the light emitting direction of the collimating unit (1), the light input unit (21) being located between the imaging unit and the collimating unit (1), and the light input unit (21) being used to gather part of the light collimated by the collimating unit (1) to near a focal point; A reflection unit (22), the reflection unit (22) being arranged between the light incident unit (21) and the imaging unit, the focus of the imaging unit being located at an end of the reflection unit (22) close to the imaging unit, and the reflection unit (22) being used to reflect another part of the light collimated by the collimating unit (1) to a plane where the focus is located.

2. The micro imaging system for headlight function according to claim 1, characterized in that: The imaging unit comprises a first imaging component (31) and a second imaging component (32); the first imaging component (31) and the second imaging component (32) are curved surfaces having focal points in mutually perpendicular planes; the first imaging component (31) and the second imaging component (32) are used to adjust the angles of the light pattern in the horizontal plane and the vertical direction.

3. The micro imaging system for headlight function according to claim 2, characterized in that: The reflection unit (22) is an internal total reflection surface.

4. The micro imaging system for headlight function according to claim 3, characterized in that: The reflection unit (22), the light incident unit (21) and the first imaging component (31) are integrally formed.

5. The micro imaging system for headlight function according to claim 2, characterized in that: The reflection unit (22) is an optical component with a certain reflectivity.

6. The micro imaging system for headlight function according to claim 5, characterized in that: The light incident unit (21) and the collimating unit (1) are integrally formed.

7. The micro imaging system for headlight function according to claim 6, characterized in that: The first imaging component (31) and the second imaging component (32) are integrally formed.

8. The micro imaging system for headlight function according to claim 1, characterized in that: A pattern layer is provided between the focus of the imaging unit and the light incident unit (21).

9. The micro imaging system for headlight function according to claim 8, characterized in that: The collimating unit (1) is a condenser, a lens or a reflector.

10. The micro imaging system for headlight function according to claim 1, characterized in that: The number of the light incident units (21) is plural, and the number of the imaging units and the reflection units (22) is the same as the number of the light incident units (21), and corresponds one to one.

Images