A vehicle lamp lens module

Abstract

The utility model discloses a car lamp lens module, including radiator, light source board, lens support and be located in the lens support's lens structure, the light source board is located on the radiator, and the lens structure sets up correspondingly the light source on the light source board, the lens structure is three piece type lens structure, and three piece type lens structure includes three lenses that set up in order along the light path, and one of them is double cemented lens. The car lamp lens module structure design is reasonable, and it adopts three piece type lens module structure, and one glass lens adopts double cemented lens, so that can realize four piece type lens module's optical effect, can also improve optical utilization rate, and simultaneously because has reduced the lens quantity more easily to assemble, has reduced the assembly tolerance, has improved the production consistency.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to a vehicle headlight lens module. Background Technology

[0002] With the advancement of Micro-LED technology, automotive headlights can achieve more diverse functions when combined with imaging projection technology, such as high-resolution ADB, AFS, and interactive projection. Therefore, there is a market demand for the development of HD projection lens modules based on Micro-LED.

[0003] Currently, to achieve high definition and good chromatic aberration correction for interactive patterns, HD lens modules typically require a four-lens system. Three-lens systems often fall short in optical performance. However, four-lens systems are structurally complex, have large assembly tolerances, and relatively poor product consistency. For example, patent CN116677950A discloses an optical structure for automotive headlights, including a lens assembly and a light source plate positioned behind the lens assembly. The lens assembly contains four lenses with optical power, comprising: a first lens; a second lens positioned behind the first lens; a third lens positioned behind the second lens; and a fourth lens positioned behind the third lens. The light source plate is positioned behind the fourth lens. The first lens has a field stop, and the third lens has a vignetting stop. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a vehicle headlight lens module, which adopts a three-piece lens module structure. The structure is simple and the assembled product has good consistency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] The vehicle headlight lens module includes a heat sink, a light source board, a lens bracket, and a lens structure disposed within the lens bracket. The light source board is disposed on the heat sink, and the lens structure is disposed corresponding to the light source on the light source board. The lens structure is a three-element lens structure, which includes three lenses arranged sequentially along the light path, one of which is a cemented doublet lens.

[0007] Further or preferred:

[0008] The light source board is located on one side of the heat sink, and a groove is provided on the other side of the heat sink, in which a fan is integrated.

[0009] It also includes a housing, and the lens holder is connected to the housing via an adjustable bracket.

[0010] The lens holder and the three lenses form an integrated modular structure.

[0011] The cemented doublet lens is located between the other two lenses.

[0012] The cemented doublet lens is a cemented doublet lens made by bonding two different glass materials together.

[0013] The outer end of the overall module structure is provided with a decorative ring, and the inner end of the overall module structure is provided with a pressing sheet.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] The headlight lens module has a reasonable structural design. It adopts a three-piece lens module structure, one of which is a double-cemented lens. This achieves the optical effect of a four-piece lens module and improves optical utilization. At the same time, reducing the number of lenses makes assembly easier, reduces assembly tolerance, and improves mass production consistency. Attached Figure Description

[0016] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0017] Figure 1 This is a schematic diagram of the lens module structure of this utility model.

[0018] Figure 2 This is a schematic cross-sectional view of the lens module of this utility model.

[0019] In the picture:

[0020] 1. Heat sink, 2. Fan, 3. Light source board, 4. Pressing sheet, 5. Adjustment bracket, 6. Lens bracket, 7. Decorative ring, 8. Lens A, 9. Lens B, 10. Lens C. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0022] like Figure 1 and Figure 2 As shown, the vehicle headlight lens module includes a housing, a heat sink 1, a light source board 3, a lens bracket 6, and a lens structure disposed within the lens bracket; the light source board 3 is disposed on the heat sink, and the lens structure corresponds to the light source on the light source board.

[0023] Its lens structure is a three-element lens structure, which includes three lenses arranged sequentially along the light path, one of which is a cemented doublet lens. This solves the problems of low image clarity and poor dispersion correction in conventional three-element lens solutions. Compared with four-element lens module solutions, it can achieve the same optical effect and improve optical utilization. At the same time, the reduced number of lenses makes assembly easier, reduces assembly tolerance, and improves mass production consistency and yield.

[0024] The lens holder and three lenses form an integrated modular structure; the outer end of the integrated modular structure is provided with a decorative ring 7, and the inner end of the integrated modular structure is provided with a pressing sheet 4, forming an integrated lens module structure, which is easy to install.

[0025] The heat sink 1 is fixed to the housing, the light source board is located on one side of the heat sink, and a groove is provided on the other side of the heat sink, in which a fan 2 is integrated. The lens bracket is connected to the housing via an adjustable bracket 5; it can also be connected by a pin for rotatable adjustment.

[0026] A cemented doublet lens is located between the other two lenses. Preferably, the three-element lens structure includes lens A8, lens B9, and lens C10, with lens A located at the outer end, lens C located at the inner end, and lens B located between lens A and lens C. Lens B is a cemented doublet lens.

[0027] Lens A is a PMMA lens (with aspherical surfaces on both sides), lens B is a cemented doublet lens made of two different glass materials, and lens C is a glass lens. By using cemented doublet lenses, the optical effect of a four-element lens module can be achieved, while improving optical utilization. At the same time, reducing the number of lenses makes assembly easier, reduces assembly tolerances, and improves mass production consistency and yield.

[0028] This patent proposes a three-element HD lens module optical system that can achieve high-resolution ADB, AFS, and interactive projection functions. One of the glass lenses is a cemented doublet lens, which solves the problems of low image clarity and poor dispersion correction in conventional three-element lens solutions. Compared with a four-element lens module solution, it can achieve the same optical effect and improve optical utilization; at the same time, the reduced number of lenses makes assembly easier and reduces assembly tolerances.

[0029] The above description is only a preferred embodiment of the present utility model. The above technical features can be arbitrarily combined to form multiple embodiments of the present utility model.

[0030] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A vehicle headlight lens module, comprising a heat sink, a light source board, a lens bracket, and a lens structure disposed within the lens bracket, wherein the light source board is disposed on the heat sink, and the lens structure is disposed corresponding to the light source on the light source board, characterized in that: The lens structure is a three-piece lens structure, which comprises three lenses arranged in sequence along a light path, one of which is a double cemented lens.

2. The vehicle lamp lens module of claim 1, wherein: The light source plate is arranged on one side of the heat sink, and the other side of the heat sink is provided with a groove, and a fan is integrated in the groove.

3. The vehicle lamp lens module of claim 1, wherein: The lens support is connected with the shell through an adjustable position adjusting support.

4. The vehicle lamp lens module of claim 1, wherein: The lens support and the three lenses form an integral module structure.

5. The headlight lens module as described in claim 1, characterized in that: The double cemented lens is located between the other two lenses.

6. The vehicle lamp lens module of claim 1, wherein: The double cemented lens is a double cemented integral lens formed by cementing two different glass materials.

7. The vehicle lamp lens module of claim 4, wherein: The integral module structure is provided with a decorative ring at the outer end, and a compression piece at the inner end.

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