Imaging system with unidirectional image correction effect, vehicle lamp and vehicle

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to an imaging system with a unidirectional image correction function, a vehicle lamp and a vehicle, and the imaging system with the unidirectional image correction function comprises a reflection unit which has parabolic cylinder characteristics and is used for imaging light distribution of a focal plane in the vertical direction; and the lens group is used for receiving the light rays emitted from the reflection unit and imaging the light distribution at the focal plane in the horizontal direction, the lens group comprises a plurality of lens units, and the plurality of lens units respectively have positive aberration or negative aberration so as to reduce the deformation degree of imaging of the lens group. According to the imaging system with the unidirectional image correction function, the aberration of a single lens can be corrected conveniently through the arrangement of different aberrations of the lens units, the situation of light pattern deformation is reduced, the problem that in a headlamp ADB scheme, the larger the angle is, the more serious the deformation is is solved, and the projection precision and effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, and in particular to an imaging system with a unidirectional image correction function, a vehicle lamp and a vehicle. Background Art

[0002] In headlight ADB (Adaptive High Beam) solutions, the larger the pixel angle, the more severe the boundary deformation. Maintaining the same single-pixel boundary width at different angles is almost impossible with traditional solutions. Traditional ADB solutions typically use a single lens as the imaging unit, which has no effect on pattern correction.

[0003] Chinese patent publication number CN219243405U discloses an intelligent high-beam lighting system and vehicle, comprising a light source, a reflector, and a light output unit. At least one of the light sources is located in the focal region of the reflector. The reflector is adapted to image the light source vertically and project it toward the light output unit. The light output unit is adapted to directly image the light reflected by the reflector in the horizontal direction, so that the light source located in the focal region can be directly imaged by the light output unit and the reflector. In this lighting system, optical performance is achieved using only two optical elements: the reflector and the light output unit, thereby simplifying the overall structure, reducing the overall footprint, and lowering costs. Furthermore, simply by arranging the light source array, single-row and multi-row pixel lighting effects, as well as high-pixel ADB lighting effects, can be achieved.

[0004] However, the reflector in the above solution has no correction function in the horizontal direction, so the further away from the optical axis, the more serious the light pattern deformation. Utility Model Content

[0005] The technical problem to be solved by the present invention is: in order to solve the technical problem in the prior art that the larger the light angle, the more serious the deformation, the present invention provides an imaging system, a headlight and a vehicle with a unidirectional image correction function.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an imaging system with a unidirectional image correction function, including a reflection unit, which has a parabolic cylindrical feature and is used to image the light distribution of the focal plane in the vertical direction; a lens group, which is used to receive the light emitted from the reflection unit and image the light distribution at the focal plane in the horizontal direction, the lens group includes a plurality of lens units, and the plurality of lens units respectively have positive aberration or negative aberration to reduce the degree of deformation of the imaging of the lens group.

[0007] The utility model provides an imaging system with a unidirectional image correction function. By adopting different aberration settings for several lens units, it is convenient to correct the aberration of a single lens, thereby reducing the distortion of the light pattern, solving the problem that the larger the angle, the more serious the distortion in the ADB solution of the headlight, and improving the projection accuracy and effect.

[0008] Furthermore, the lens group includes at least two lens units, the lens unit has a contour line in a horizontal plane, and the contour line of the lens unit extends along a vertical direction to form the lens unit.

[0009] Furthermore, the number of the lens units is proportional to the imaging correction accuracy.

[0010] Furthermore, the reflecting unit is formed by a section line in a vertical plane extending horizontally.

[0011] Furthermore, the reflecting unit has a first focus in a vertical plane and a first focal length.

[0012] Furthermore, the lens group has a common second focus, which is located at twice the first focal length from the first focus and is located in the negative direction of the optical axis.

[0013] Furthermore, the surface of the lens unit has a first pattern.

[0014] Furthermore, the surface of the reflective unit has a second pattern.

[0015] Furthermore, a vehicle lamp includes the above-mentioned imaging system with a unidirectional image correction function.

[0016] Furthermore, a vehicle includes the above-mentioned headlight.

[0017] The beneficial effects of the present utility model are:

[0018] 1. By using different aberration settings for several lens units, it is convenient to correct the aberration of a single lens, thereby reducing the distortion of the light pattern and improving the projection accuracy and effect;

[0019] 2. By setting the first pattern and the second pattern, it is convenient to further improve the lighting uniformity and ensure the luminous effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of an imaging system with a unidirectional image correction function in the present invention.

[0022] Figure 2It is a schematic diagram of light distribution in a vertical plane embodying this solution in the utility model.

[0023] Figure 3 It is a schematic diagram showing the positional relationship between the lens group and the focus of the reflection unit in the present invention.

[0024] In the figure: 1, reflection unit; 2, lens group; 21, lens unit; F, first focus; F1, second focus; f, first focal length. DETAILED DESCRIPTION

[0025] 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.

[0026] 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. 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.

[0027] The utility model discloses an imaging system with a unidirectional image correction function, a vehicle lamp and a vehicle.

[0028] Reference Figures 1 to 3, an imaging system with a unidirectional image correction function, including a reflection unit 1 and a lens group 2, the reflection unit 1 has a parabolic feature and is used to image the light distribution of the focal plane in the vertical direction, and the lens group 2 is used to receive the light emitted from the reflection unit 1 and image the light distribution at the focal plane in the horizontal direction. The lens group 2 includes a plurality of lens units 21, and the plurality of lens units 21 respectively have positive aberration or negative aberration to reduce the degree of deformation of the imaging of the lens group 2. The lens group 2 includes at least two lens units 21, and the lens unit 21 has a contour line in the horizontal plane, and the contour line of the lens unit 21 extends in the vertical direction to form the lens unit 21. By adopting different aberration settings for the plurality of lens units 21, it is convenient to correct the aberration of a single lens, thereby reducing the deformation of the light type and improving the projection accuracy and effect.

[0029] Specifically, in the vertical plane, the outline of the reflective unit 1 includes a parabola portion, and the parabola is stretched along the normal direction in the plane to form a reflective unit 1 having parabolic cylinder characteristics. The reflective unit 1 has a first focus F and a first focal length f in the vertical plane.

[0030] The multiple lens units 21 within the lens assembly 2 have a common second focal point F1, which is located at a distance twice the first focal length f from the first focal point F and is located in the negative direction of the optical axis relative to the first focal point F. The multiple lens units 21 within the lens assembly 2 are made of different materials. By using glass materials with different refractive indices, the multiple lens units 21 within the lens assembly 2 have a common second focal point F1.

[0031] For a single lens unit 21, the center and edge of the lens unit 21 have different light-gathering capabilities, resulting in the light not being able to converge completely at the focal point after passing through the lens unit 21, but rather deviating from the focal point. This will cause image distortion, which is an unavoidable problem for a single lens. The design of this solution is based on this principle. Taking two lens units 21 as an example, first determine that the focus and focal length can generate the first lens unit 21. However, the first lens unit 21 will produce positive or negative aberration, so the actual light cannot converge completely at the designed focal point after passing through the lens unit 21 in the reverse direction. At this time, add another lens unit 21 in the forward direction of the light output of the first lens unit 21 to correct the aberration generated by the first lens unit 21 (i.e., if the first lens unit 21 produces positive aberration, the second lens unit 21 will produce negative aberration; or if the first lens unit 21 produces negative aberration and the second lens unit 21 produces positive aberration), ensuring that the light passing through the two lens units 21 is mostly converged at the focal point or the deviation is very small.

[0032] It should be noted that the number of lens units 21 is proportional to the imaging correction accuracy, that is, the more the number of lens units 21 is, the higher the imaging accuracy is.

[0033] In addition, the surface of the lens unit 21 has a first pattern, and the surface of the reflective unit 1 has a second pattern. The arrangement of the first pattern and the second pattern facilitates further improvement of lighting uniformity and ensures a luminous effect.

[0034] A vehicle lamp comprises the above-mentioned imaging system with unidirectional image correction function.

[0035] A vehicle comprises the above-mentioned headlight.

[0036] 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 imaging system with a unidirectional image correction function, characterized in that: include A reflective unit (1) having a parabolic cylindrical feature and used for imaging the light distribution of the focal plane in a vertical direction; A lens group (2) is used to receive light emitted from a reflection unit (1) and to image the light distribution at a focal plane in a horizontal direction. The lens group (2) comprises a plurality of lens units (21), and the plurality of lens units (21) respectively have positive aberration or negative aberration to reduce the degree of distortion of the imaging of the lens group (2).

2. The imaging system with unidirectional image correction function according to claim 1, characterized in that: The lens group (2) comprises at least two lens units (21), the lens units (21) having contour lines in a horizontal plane, and the contour lines of the lens units (21) extending in a vertical direction to form the lens units (21).

3. The imaging system with unidirectional image correction function according to claim 1, characterized in that: The number of the lens units (21) is proportional to the imaging correction accuracy.

4. The imaging system with unidirectional image correction function according to claim 1, characterized in that: The reflecting unit (1) is formed by a section line in a vertical plane extending horizontally.

5. The imaging system with unidirectional image correction function as claimed in claim 4, characterized in that: The reflecting unit (1) has a first focus in a vertical plane and a first focal length.

6. The imaging system with unidirectional image correction function according to claim 5, characterized in that: The lens group (2) has a common second focus, which is located at a distance twice the first focal length from the first focus and is located in the negative direction of the optical axis.

7. The imaging system with unidirectional image correction function according to claim 1, characterized in that: The surface of the lens unit (21) has a first pattern.

8. The imaging system with unidirectional image correction function according to claim 1, characterized in that: The surface of the reflecting unit (1) has a second pattern.

9. A vehicle lamp, characterized in that: An imaging system with unidirectional image correction function comprising the imaging system according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Including the vehicle light according to claim 9.

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