Imaging type self-adaptive high beam module and vehicle using same

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to an imaging type self-adaptive high beam lamp module and a vehicle using the imaging type self-adaptive high beam lamp module. The lens group comprises a first positive lens and a second positive lens which are sequentially arranged from the image plane to the object plane along the optical axis direction; the first positive lens is a biconvex lens, the end face, facing the first positive lens, of the second positive lens is a convex face, and the end face, back to the first positive lens, of the second positive lens is a concave face. Light emitted by the matrix type light source group is sequentially refracted by the second positive lens and the first positive lens and then is projected. The structure of the whole high beam lamp module can be simplified, the high beam lamp module has good projection performance, and a light pattern graph with proper broadening and a uniform road lighting effect can be formed when the matrix type light source group works.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, and in particular to an imaging type adaptive high beam lamp module and a vehicle using the same. Background Art

[0002] The optical solutions of matrix adaptive high beam modules commonly used in the prior art are divided into silicone type and imaging type. The silicone type solution uses a silicone light guide column to converge the light spots emitted by multiple independent LED light sources, and then uses a lens group to image them to 25 meters. The imaging type optical solution is generally composed of an LED light source, a lens group, a focusing structure and / or a reflective optical element.

[0003] Among them, for the silicone type solution, it was found through actual use that, on the one hand, the silicone light guide column is difficult to be injected during the production process; on the other hand, the overall size of the adaptive high beam module molded by the silicone type solution is large, which is difficult to apply to the use scene with limited assembly space. For the imaging type solution, which is composed of LED light source, lens group and focusing structure and / or reflective optical elements, although it has advantages in aberration correction and chromatic aberration correction, it requires a larger number of parts, which brings more part tolerances and more assembly tolerances, which can easily reduce the production yield and increase production costs.

[0004] Therefore, in view of the above situation, in order to reduce the overall size of the formed adaptive high beam lamp module and simplify the overall structure to reduce the use of parts, it is necessary to design a new adaptive high beam lamp module structure. Utility Model Content

[0005] The first object of the utility model is to provide an imaging type adaptive high beam lamp module to solve the technical problem of reducing the overall size of the module and simplifying its overall structure.

[0006] The second object of the utility model is to provide a vehicle to solve the technical problem of reducing the overall size of the high beam lamp module used in the vehicle and simplifying its overall structure.

[0007] The imaging adaptive high beam lamp module of the utility model is implemented as follows:

[0008] An imaging adaptive high beam lamp module, comprising:

[0009] A matrix light source group, used for emitting light; and

[0010] A lens group, comprising a first positive lens and a second positive lens arranged in sequence from an image plane to an object plane along an optical axis; the first positive lens is a biconvex lens, the end surface of the second positive lens facing the first positive lens is a convex surface, and the end surface of the second positive lens facing away from the first positive lens is a concave surface;

[0011] The light emitted by the matrix light source group is projected after being refracted by the second positive lens and the first positive lens in sequence.

[0012] In an optional implementation of the present invention, the matrix light source group satisfies: H≤18mm, V≤6mm, wherein H is the length of the matrix light source group, and V is the width of the matrix light source group.

[0013] In an optional implementation of the present invention, the matrix light source group includes one or more rows of LED light sources, wherein the multiple rows of LED light sources are arranged in a form of multiple rows arranged neatly or multiple rows arranged staggered.

[0014] In an optional implementation of the present invention, the light-clearing aperture of the first positive lens is larger than the light-clearing aperture of the second positive lens.

[0015] In an optional implementation of the present invention, the first positive lens is made of a low-dispersion plastic material, and the Abbe number Vd of the first positive lens is ≥40.

[0016] In an optional implementation of the present invention, the second positive lens is made of a low-dispersion glass material, and the Abbe number Vd of the second positive lens is ≥40.

[0017] In an optional implementation of the present invention, the end surface of the second positive lens facing the first positive lens and the end surface facing away from the first positive lens are both spherical surfaces.

[0018] In an optional implementation of the present invention, the end surface of the first positive lens facing the second positive lens and the end surface facing away from the second positive lens are both aspherical surfaces.

[0019] In an optional implementation of the present invention, a pattern is provided on the end surface of the first positive lens facing the second positive lens or the end surface facing away from the second positive lens.

[0020] The vehicle of the present utility model is realized in this way:

[0021] A vehicle comprises: the imaging adaptive high beam lamp module.

[0022] By adopting the above technical solution, the utility model has the following beneficial effects: the imaging-type adaptive high-beam lamp module of the utility model adopts a two-piece lens group with a simple structure, reasonable aberration optimization, and good projection performance. When the matrix light source group is working, it can form a light pattern with appropriate widening and a uniform road lighting effect. And for the overall imaging-type adaptive high-beam lamp module, the precision parts with high processing accuracy requirements such as the focusing structure and / or reflective optical elements are omitted, which can greatly simplify the structure of the overall high-beam lamp module and reduce its product size, so that it can be used in application scenarios with limited assembly space, and at the same time reduce the errors between the assembly of different parts, and improve the optical performance of the overall high-beam lamp module. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a lens group of an imaging-type adaptive high-beam lamp module of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a matrix light source group of an imaging-type adaptive high-beam lamp module of the utility model;

[0025] Figure 3 It is a schematic diagram of the light pattern of the imaging adaptive high beam lamp module of the utility model;

[0026] Figure 4 The utility model is a road lighting diagram of the imaging type adaptive high beam lamp module.

[0027] In the figure: a matrix light source group 1, an LED light source 11, an optical axis a, an object plane b, a first positive lens L1, and a second positive lens L2. DETAILED DESCRIPTION

[0028] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0029] Embodiment 1:

[0030] See also Figures 1 to 4 As shown, this embodiment provides an imaging type adaptive high beam lamp module, including: a matrix light source group 1 and a lens group used together.

[0031] Next, a specific optional implementation is described in detail with reference to the accompanying drawings. First, the matrix light source group 1:

[0032] Functionally, the matrix light source set 1 is used to emit light.

[0033] Structurally, the matrix light source group 1 satisfies: H≤18mm, V≤6mm, where H is the length of the matrix light source group 1, and V is the width of the matrix light source group 1. More specifically, the matrix light source group 1 includes one or more rows of LED light sources 11, wherein the multiple rows of LED light sources 11 are arranged in a form of multiple rows arranged neatly or multiple rows arranged staggered.

[0034] In an optional implementation, the LED light source 11 includes LED light chips, and depending on the number of light chips, ordinary LED light chips can be used, or micro LEDs with micron-level sizes, i.e., a miniature LED light source, can be used. This embodiment does not make an absolute limitation on this.

[0035] In this regard, the attached drawings of this embodiment only take the matrix light source group 1 including four rows of neatly arranged LED light sources 11 as an example, and the first row and the second row of LED light sources 11 in the four rows of LED light sources 11 include the same number of LED light chips, the third row and the fourth row of LED light sources 11 include the same number of LED light chips, and the third row of LED light sources 11 includes less LED light chips than the second row of LED light sources 11. Each LED light chip can independently control the light source duty cycle through the controller, and the brightness and range adjustment of the image-type adaptive high beam module of this embodiment is achieved by controlling the light source duty cycle.

[0036] Next, let's talk about the lens group:

[0037] Structurally, the lens group includes a first positive lens L1 and a second positive lens L2 placed in sequence along the optical axis a from the image plane to the object plane b; the first positive lens L1 is a biconvex lens, that is, it includes a convex surface S1 and a convex surface S2, the end surface of the second positive lens L2 facing the first positive lens L1 is a convex surface S3, and the end surface of the second positive lens L2 facing away from the first positive lens L1 is a concave surface S4. In one optional embodiment, the light aperture of the first positive lens L1 is larger than the light aperture of the second positive lens L2.

[0038] More specifically, in this embodiment, a positive lens refers to a lens with a positive optical angle. The optical power, also known as diopter, is used to characterize the ability of a lens surface to focus or diverge light. The greater the optical power, the stronger the ability of the lens surface to deflect light.

[0039] Based on the above situation, the matrix light source set 1 is disposed at the location of the object plane b, and the light emitted by the matrix light source set 1 is projected after being refracted by the second positive lens L2 and the first positive lens L1 in sequence.

[0040] In this structure, by using the first positive lens L1 and the second positive lens L2 in combination, the light emitted by the matrix light source group 1 can be refracted once by the second positive lens L2, and then the light output by the second positive lens L2 can be refracted twice by the first positive lens L1. In this structure, aberrations are reduced, so that the projected image is clearer and the image deformation is smaller.

[0041] It should be noted that the resolution of the lens assembly in this embodiment is not less than the resolution of the matrix light source group 1, so that the light distribution and light intensity distribution of the matrix light source group 1 can be accurately projected to improve the accuracy of imaging.

[0042] In terms of material, the first positive lens L1 is made of low-dispersion plastic material, and the Abbe number Vd of the first positive lens L1 is ≥40. The second positive lens L2 is made of low-dispersion glass material, and the Abbe number Vd of the second positive lens L2 is ≥40. The Abbe number, also known as the dispersion coefficient, is used to measure the degree of light dispersion of a transparent medium. The Abbe number is an index used to represent the dispersion ability of a transparent medium. Under this design, the chromatic aberration can be effectively corrected through the reasonable design of the Abbe number of the first positive lens L1 and the second positive lens L2, thereby improving the image clarity.

[0043] In a more detailed embodiment, the end surface of the second positive lens L2 facing the first positive lens L1 and the end surface facing away from the first positive lens L1 are both spherical. The end surface of the first positive lens L1 facing the second positive lens L2 and the end surface facing away from the second positive lens L2 are both aspherical.

[0044] Based on the above structure, this embodiment also has the following designs:

[0045] A pattern is provided on the end surface of the first positive lens L1 facing the second positive lens L2 or the end surface facing away from the second positive lens L2, that is, for the first positive lens L1, only one of its outer surfaces needs to be provided with a pattern, and this pattern can be on the light incident surface or the light exiting surface of the first positive lens L1, and this embodiment does not make an absolute limitation on this. The pattern here can be selected as a rectangular grid pattern, and the designed grid pattern can appropriately diffuse the light in the up, down, left, and right directions to make the light shape more uniform.

[0046] In addition, in another optional implementation, an anti-reflection film is provided on at least one of the end surface of the second positive lens L2 facing the first positive lens L1 and the end surface facing away from the first positive lens L1. The thickness of the anti-reflection film is very thin, which can improve light transmittance and reduce Fresnel reflection.

[0047] In summary, for the imaging adaptive high beam module used in this embodiment, the lens group used is a two-piece lens with a simple structure, reasonable aberration optimization, and good projection performance. When the matrix light source group 1 is working, it can form a widened light pattern and a uniform road lighting effect. In addition, for the overall imaging adaptive high beam module, the precision parts with high processing accuracy requirements such as the focusing structure and / or reflective optical elements are omitted, which can greatly simplify the structure of the overall high beam module and reduce its product size, so that it can be used in application scenarios with limited assembly space, while reducing the errors between the assembly of different parts and improving the optical performance of the overall high beam module.

[0048] Embodiment 2:

[0049] Based on the imaging adaptive high beam lamp module of Example 1, this embodiment provides a vehicle, including: the imaging adaptive high beam lamp module of Example 1.

[0050] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0051] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 invention.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. An imaging adaptive high beam lamp module, characterized in that: include: A matrix light source group, used for emitting light; and A lens group, comprising a first positive lens and a second positive lens arranged in sequence from an image plane to an object plane along an optical axis; the first positive lens is a biconvex lens, the end surface of the second positive lens facing the first positive lens is a convex surface, and the end surface of the second positive lens facing away from the first positive lens is a concave surface; The light emitted by the matrix light source group is projected after being refracted by the second positive lens and the first positive lens in sequence.

2. The imaging adaptive high beam lamp module according to claim 1, characterized in that: The matrix light source group satisfies: H≤18mm, V≤6mm, where H is the length of the matrix light source group, and V is the width of the matrix light source group.

3. The imaging adaptive high beam lamp module according to claim 1 or 2, characterized in that: The matrix light source group includes one or more rows of LED light sources, wherein the multiple rows of LED light sources are arranged in a form of multiple rows arranged neatly or multiple rows arranged staggered.

4. The imaging adaptive high beam lamp module according to claim 1 or 2, characterized in that: The light-clearing aperture of the first positive lens is larger than the light-clearing aperture of the second positive lens.

5. The imaging adaptive high beam lamp module according to claim 1, characterized in that: The first positive lens is made of a low-dispersion plastic material, and the Abbe number Vd of the first positive lens is ≥40.

6. The imaging adaptive high beam lamp module according to claim 1 or 5, characterized in that: The second positive lens is made of low-dispersion glass material, and the Abbe number Vd of the second positive lens is ≥40.

7. The imaging adaptive high beam lamp module according to claim 1, characterized in that: The end surface of the second positive lens facing the first positive lens and the end surface facing away from the first positive lens are both spherical surfaces.

8. The imaging adaptive high beam lamp module according to claim 1 or 7, characterized in that: The end surface of the first positive lens facing the second positive lens and the end surface facing away from the second positive lens are both aspherical surfaces.

9. The imaging adaptive high beam lamp module according to claim 8, characterized in that: A pattern is arranged on the end surface of the first positive lens facing the second positive lens or the end surface facing away from the second positive lens.

10. A vehicle, characterized in that: include: An imaging adaptive high beam lamp module as claimed in any one of claims 1 to 9.

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