Flat high beam module and vehicle using same

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to a flattened high beam lamp module and a vehicle using the flattened 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 plano-convex lens, and the second positive lens is a biconvex lens. Wherein the emergent surface of the first positive lens is a plane, and the incident surface of the first positive lens is a convex surface; 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. According to the utility model, the simplification of the whole structure can be considered, the trend of automobile lamp flattening development is catered, and the use requirement of a flattening light-emitting model is met.

Description

Technical Field

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

[0002] Adaptive high beam is an innovative technology for nighttime driving that can intelligently adjust the brightness and range of high beams according to the vehicle's surroundings and other traffic participants to provide a safer and more comfortable driving experience. Currently, low-pixel adaptive high beams mostly use a single-row pixel arrangement, and due to focal length limitations, the light-emitting surface is usually convex.

[0003] With regard to the adaptive high beam solution with a single row of pixels arranged in the prior art, it has been found through practical use that it has the following defects:

[0004] First, the current headlight shape pursues a flat design, and the adaptive high-beam design with a convex light-emitting surface requires a flat dummy lens to be added in front of the lens to achieve this shape requirement. However, this implementation method introduces a flat dummy lens, which not only affects the light effect, but also increases the production cost of the entire headlight module. Secondly, there is a lack of precision in the V direction of the road lighting pattern (the V direction is the direction parallel to the direction of travel of the car when the headlight is used in the vehicle).

[0005] Therefore, in view of the above situation, in order to meet the flat styling requirements without affecting the lighting effect, a new flat high beam module structure needs to be designed. Utility Model Content

[0006] The first purpose of the utility model is to provide a flat high beam lamp module to solve the technical problem of meeting the requirements of both light effect and flat shape.

[0007] The second object of the utility model is to provide a vehicle to solve the technical problem of satisfying both the light effect and flattened shape requirements of the high beam lamp module used in the vehicle.

[0008] The flat high beam lamp module of the utility model is realized as follows:

[0009] A flat high beam lamp module, comprising:

[0010] A matrix light source group, used for emitting light; and

[0011] 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 plano-convex lens, and the second positive lens is a biconvex lens; wherein the light exiting surface of the first positive lens is a plane, and the light incident surface of the first positive lens is a convex surface;

[0012] 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.

[0013] In an optional implementation of the present invention, the effective aperture D of the light incident surface of the first positive lens satisfies: 35≤D≤50mm.

[0014] In an optional implementation of the present invention, the total optical length OTL of the imaging light path of the flattened high beam module satisfies: 45≤OTL≤70mm.

[0015] In an optional implementation of the present invention, the matrix light source group includes at least two rows of LED light sources; and

[0016] At least two rows of LED light sources are arranged in a neat arrangement or staggered arrangement.

[0017] In an optional implementation of the present invention, the first positive lens is made of plastic material.

[0018] In an optional implementation of the present invention, the second positive lens is made of glass material.

[0019] In an optional implementation of the present invention, the light incident surfaces of the second positive lens and the first positive lens are both aspherical surfaces.

[0020] In an optional implementation of the present invention, the light-emitting surface of the second positive lens is a spherical surface.

[0021] In an optional implementation of the present invention, a pattern is provided on the light incident surface or the light emitting surface of the first positive lens.

[0022] The vehicle of the utility model is achieved in this way:

[0023] A vehicle comprises: the flattened high beam lamp module.

[0024] By adopting the above technical solution, the utility model has the following beneficial effects: the flattened high beam lamp module of the utility model, firstly, adopts a two-piece lens group with a simple structure, omitting the focusing structure and / or reflective optical elements and other precision parts with high processing accuracy requirements, 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, while reducing the errors between the assembly of different parts, improving the optical performance of the overall high beam lamp module, and being able to form a widened light pattern and uniform road lighting effect under the operation of the matrix light source group. Furthermore, the first positive lens adopted is a plano-convex lens, and its light-emitting surface is flat, which can cater to the trend of flattening of car lights and meet the use requirements of flattened light-emitting shapes.

[0025] In addition, the matrix light source group of the utility model includes at least two rows of LED light sources. Compared with the matrix light source group that is generally arranged in a single row of pixels, it has a more refined design in the light pattern V direction, and can more accurately close the lighting area, thereby increasing nighttime driving vision and driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a lens assembly of a flat high beam lamp module of the utility model;

[0027] Figure 2 It is a structural schematic diagram of a matrix light source group of a flat high beam lamp module of the utility model;

[0028] Figure 3 It is a schematic diagram of the light pattern of the flat high beam lamp module of the present invention.

[0029] 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

[0030] 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.

[0031] Embodiment 1:

[0032] See also Figures 1 to 3 As shown, this embodiment provides a flat high beam lamp module, including: a matrix light source group 1 and a lens group used in conjunction with each other.

[0033] Next, a specific optional implementation is described in detail with reference to the accompanying drawings. First, the matrix light source group 1:

[0034] Functionally, the matrix light source set 1 is used to emit light.

[0035] Structurally, the matrix light source group includes at least two rows of LED light sources; and at least two rows of LED light sources are arranged in a neat arrangement or staggered arrangement. Compared with the matrix light source group with a single row of pixels, it has a more refined design in the V direction of the light pattern, which can more accurately close the lighting area, increase the nighttime driving vision and driving safety.

[0036] In an optional implementation, the LED light source 11 includes LED particles. Depending on the LED particles, ordinary LED particles or micro-LEDs with a size of micrometers, i.e., a miniature LED light source, may be used. This embodiment does not make an absolute limitation on this.

[0037] In this regard, the attached drawings of this embodiment only take the example that the matrix light source group 1 includes three rows of neatly arranged LED light sources 11, and the number of LED particles included in the first row, the second row and the third row of the three rows of LED light sources 11 is decreasing, and the number of LED particles included in each two adjacent rows of LED light sources 11 decreases by two. Based on this, each LED particle 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.

[0038] Next, let's talk about the lens group:

[0039] 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 plano-convex lens, and the light-emitting surface of the first positive lens L1 is a plane S1, and the light-entering surface of the first positive lens is a convex surface S2. The second positive lens L2 is a biconvex lens, that is, for the second positive lens L2, the light-entering surface of the second positive lens L2 is a convex surface S4 and the light-emitting surface is a convex surface S3. In more detail, in this embodiment, the positive lens refers to a lens with a positive light angle, and the optical focal length, also called refractive power, is used to characterize the ability of the lens surface to focus or diverge light. The greater the optical focal length, the stronger the ability of the lens surface to deflect light.

[0040] In a specific optional implementation, the light incident surfaces of the second positive lens L2 and the first positive lens L1 are both designed to be aspherical surfaces, and the aspherical surface setting can be used to correct aberrations, improve imaging resolution, and greatly improve the imaging quality of the optical structure. The light exit surface of the second positive lens L2 is designed to be a spherical surface.

[0041] Based on the above situation, furthermore, the aperture D of the light incident surface of the first positive lens L1 satisfies: 35≤D≤50 mm, where the effective aperture refers to the diameter value of the lens that actually transmits light when the matrix light source group is turned on.

[0042] In terms of material, the first positive lens L1 can be made of, for example but not limited to, PMMA (polymethyl methacrylate, PMMA for short), also known as acrylic, which has the advantages of high transparency, low price, and easy machining, and will not produce large deformation when heated; the second positive lens L2 is made of, for example but not limited to, H-K9L (optical glass) or high borosilicate material. The combination of plastic material and glass material used in the lens group adopted in this embodiment can still maintain a clear projection effect under the conditions of -40℃ to 85℃, has better stability when used in car lamp products, and can improve imaging resolution, greatly improving the imaging quality of the optical structure.

[0043] Based on the above situation, it should be noted that the matrix light source group 1 is arranged at the position of the object plane b, and the light emitted by the matrix light source group 1 is projected after being refracted by the second positive lens L2 and the first positive lens L1 in sequence. Based on this, the total optical length OTL of the imaging light path of the flat high beam module of this embodiment satisfies: 45≤OTL≤70mm.

[0044] Under 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, thereby reducing aberrations and making the projected image clearer and less deformed.

[0045] 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.

[0046] Based on the above structure, this embodiment also has the following designs:

[0047] Patterns are provided on 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. The pattern here can be a rectangular grid pattern, and the designed grid pattern can properly diffuse the light in the up, down, left, and right directions to make the light shape more uniform.

[0048] 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.

[0049] In summary, for the flat high beam module adopted in this embodiment, the lens group adopted is a two-piece lens with a simple structure. First, the lens group adopted is a two-piece lens with a simple structure, and 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. At the same time, it reduces the errors between the assembly of different parts and improves the optical performance of the overall high beam module. When the matrix light source group 1 is working, it can form a widened light pattern and a uniform road lighting effect. Furthermore, the first positive lens adopted is a plano-convex lens, and its light-emitting surface is flat, which can cater to the trend of flattening of car lights and meet the use requirements of flattened light-emitting shapes.

[0050] Embodiment 2:

[0051] Based on the flattened high beam lamp module of the first embodiment, this embodiment provides a vehicle, including: the flattened high beam lamp module of the first embodiment.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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. A flat 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 plano-convex lens, and the second positive lens is a biconvex lens; wherein the light exiting surface of the first positive lens is a plane, and the light incident surface of the first positive lens is a convex 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 flat high beam lamp module according to claim 1, characterized in that: The effective aperture D of the light incident surface of the first positive lens satisfies: 35≤D≤50mm.

3. The flat high beam lamp module according to claim 1 or 2, characterized in that: The total optical length OTL of the imaging light path of the flattened high beam module satisfies: 45≤OTL≤70mm.

4. The flat high beam lamp module according to claim 1 or 2, characterized in that: The matrix light source group includes at least two rows of LED light sources; and At least two rows of LED light sources are arranged in a neat arrangement or staggered arrangement.

5. The flat high beam lamp module according to claim 1, characterized in that: The first positive lens is made of plastic material.

6. The flat high beam lamp module according to claim 1 or 5, characterized in that: The second positive lens is made of glass material.

7. The flat high beam lamp module according to claim 1, characterized in that: The light incident surfaces of the second positive lens and the first positive lens are both aspherical surfaces.

8. The flat high beam lamp module according to claim 1 or 7, characterized in that: The light-emitting surface of the second positive lens is a spherical surface.

9. The flat high beam lamp module according to claim 8, characterized in that: A pattern is provided on the light incident surface or the light emitting surface of the first positive lens.

10. A vehicle, characterized in that: include: The flat high beam lamp module according to any one of claims 1 to 9.

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