A million-pixel projection module for headlights

Abstract

The utility model belongs to the field of optical projection, and specifically relates to a megapixel projection module for headlights, including a light source, a reflective chip, a converging lens group, a reflector and an imaging lens group, wherein the light source is located below the converging lens group, the reflector is located above the converging lens group, the reflective chip is located on one outer side between the converging lens group and the reflector, the imaging lens group is located on the other outer side between the converging lens group and the reflector, the light source and the normal of the reflective chip are arranged at 90°, the light emitted by the light source is converged by the converging lens group and irradiated on the reflector, and then reflected on the reflective chip, pixelatedly reflected by the reflective chip, and finally reflected to the imaging lens group, and the imaging lens group projects the light to the target area. The utility model adopts advanced projection technology and high-resolution pixel design to provide clear and delicate light and shadow effects; adopts a simple and efficient optical system to reduce the internal volume of the module to adapt to the headlight housing with limited layout space.

Description

Technical Field

[0001] The utility model belongs to the field of optical projection, and in particular relates to a million-level pixel projection module for a headlight. Background Art

[0002] With the rapid development of the automobile industry and the increasing requirements of consumers for automobile lighting systems, the function of headlights, as an important part of the automobile lighting system, has gradually changed from simple lighting to a comprehensive system that integrates lighting, decoration, safety warning and other functions. Especially in high-end and luxury models, the lighting effect and design of headlights have become one of the important indicators to measure the quality and grade of vehicles.

[0003] At present, the headlight lighting system mainly uses LED as the light source, and different lighting effects are achieved by designing different light groups and light paths. However, this traditional design method has limitations in achieving high-resolution projection and delicate light and shadow effects. The pixel density of LED light sources is limited, and it is impossible to achieve a projection effect at the million-pixel level, resulting in the projection picture not being clear and delicate enough, and unable to meet consumers' demand for high-quality lighting effects. At the same time, with the continuous development of automotive intelligent technology, the headlight lighting system also needs to have a higher level of intelligence. Although the existing headlight system can achieve some basic lighting change effects through programming, it still has shortcomings in achieving complex light and shadow changes, dynamic adjustment, and intelligent interaction with other vehicle systems.

[0004] In addition, currently, both million-level projectors for home use and in-car use face a common challenge: their complex optical path design and large size make it difficult for them to adapt to the internal installation requirements of headlight housings with limited layout space. Utility Model Content

[0005] In order to solve the above-mentioned problems existing in the prior art, the utility model provides a million-pixel projection module for headlights, which adopts advanced projection technology and high-resolution pixel design to provide clear and delicate light and shadow effects; adopts a simple and efficient optical system to reduce the internal volume of the module to adapt to the headlight housing with limited layout space.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a million-pixel projection module for headlights, comprising a light source, a reflective chip, a converging lens group, a reflector and an imaging lens group, the light source is located below the converging lens group, the reflector is located above the converging lens group, the reflective chip is located outside one side between the converging lens group and the reflector, the imaging lens group is located outside the other side between the converging lens group and the reflector, the normal of the light source and the reflective chip are arranged at 90°, the light emitted by the light source is converged by the converging lens group and irradiated onto the reflector, and then reflected onto the reflective chip, pixelatedly reflected by the reflective chip, and finally reflected to the imaging lens group and the imaging lens group projects the light to the target area.

[0007] Furthermore, the converging lens group includes two converging lenses.

[0008] Furthermore, the reflector is arranged to be inclined toward the reflective chip.

[0009] Furthermore, the reflective chip is a million-level micro-reflective chip.

[0010] Furthermore, the imaging lens group includes a plurality of imaging lenses, and the plurality of imaging lenses are arranged sequentially from left to right.

[0011] Furthermore, a light converging cavity is arranged outside the light source, the reflective chip, the converging lens group and the reflector, and an imaging lens barrel is arranged outside the imaging lens group.

[0012] Furthermore, a radiator is arranged on the left side of the light converging cavity, and a control circuit board is arranged above the light converging cavity and the radiator.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This utility model adopts a million-level micro-mirror DMD chip, which significantly improves the projection effect and visual experience of the headlights. Compared with the traditional LED light source, this module can achieve a million-level pixel-level projection effect, making the projection picture clearer and more delicate, meeting consumers' demand for high-quality lighting effects;

[0015] 2. The utility model has dynamic adjustment and intelligent interaction functions, and can be adaptively adjusted according to different driving scenarios and user needs to improve driving safety and comfort;

[0016] 3. The combined architecture of a converging lens group and a reflector adopted in the present invention not only optimizes the optical path design, but also significantly reduces the size of the module, making the module more suitable for installation in a headlamp housing with limited layout space. This not only improves the overall design flexibility of the headlamp, but also helps to reduce production costs and installation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 for Figure 2 Section view at AA in the middle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 The technical solution provided by the utility model is: a megapixel projection module for a headlight, comprising a light source 1, a reflective chip 6, a converging lens group 7, a reflector 8 and an imaging lens group 9, wherein the light source 1, the reflective chip 6, the converging lens group 7, the reflector 8 and the imaging lens group 9 are located inside the module, the light source 1 is located below the converging lens group 7, the converging lens group 7 is close to the light source 1 so that the light emitted by the light source 1 converges, the reflector 8 is located above the converging lens group 7, the reflective chip 6 is located outside one side between the converging lens group 7 and the reflector 8, and the position of the reflective chip 6 is The positions of the light source 1 and the reflector 8 match, the imaging lens group 9 is located outside the other side between the converging lens group 7 and the reflector 8, the reflective chip 6 is opposite to the imaging lens group 9 on the left and right, and the normal of the light source 1 and the reflective chip 6 are set at 90°, ensuring that the light emitted by the light source 1 is efficiently and accurately captured and utilized. The light emitted by the light source 1 is converged by the converging lens group 7 and irradiated onto the reflector 8, and then reflected onto the reflective chip 6, pixelatedly reflected by the reflective chip 6, and finally reflected to the imaging lens group 9 and projected to the target area by the imaging lens group 9.

[0022] Specifically, the converging lens group 7 includes two converging lenses, and the parameters and positions of the two converging lenses are optimized according to the light source 1 and the reflective chip 6; the reflector 8 is tilted toward the reflective chip 6, and the reflective surface of the reflector 8 is obliquely opposite to the reflective chip 6. The shape and angle of the reflector 8 are optimized according to the converging lens group 7 and the reflective chip 6. The reflective chip 6, the converging lens group 7 and the reflector 8 are matched with each other according to the types of the light source 1 and the reflective chip 6. Ultimately, the light is converged by the carefully designed converging lens group 7 and then projected onto the reflector 8 and then reflected onto the reflective chip 6, thereby realizing the shortest optical path design and effectively reducing the volume of the cavity inside the module for light convergence.

[0023] Specifically, the reflective chip 6 is a million-level micro-reflective chip, which is a DMD chip. After receiving the light, the reflective chip 6 performs pixelated reflection through its unique micro-mirror array, thereby achieving a million-level pixel projection effect.

[0024] Specifically, the imaging lens group 9 includes a plurality of imaging lenses, which are arranged in sequence from left to right to project pixelated light onto a target area to form a clear and delicate projection image. The plurality of imaging lenses can be adjusted according to the projection effect and requirements.

[0025] Specifically, a light converging cavity 2 is arranged outside the light source 1, the reflective chip 6, the converging lens group 7 and the reflector 8, and an imaging lens barrel 3 is arranged outside the imaging lens group 9. The size and shape of the light converging cavity 2 and the imaging lens barrel 3 can be adjusted according to various vehicle models and lamp housing designs.

[0026] Specifically, a heat sink 5 is disposed on the left side of the light converging cavity 2 , and a control circuit board 4 is disposed above the light converging cavity 2 and the heat sink 5 .

[0027] The light projection process of the utility model is as follows: first, the light source 1 emits light, which is converged by the converging lens group 7 and projected onto the reflector 8, and then reflected by the reflector 8 and accurately projected onto the reflective chip 6. This is because the normal of the light source 1 and the reflective chip 6 are arranged at 90°, which realizes efficient optical path optimization. Then, after the reflective chip 6 receives the light, it performs pixelated reflection through a unique micro-mirror array, and then the imaging lens group 9 projects the pixelated light onto the target area, forming a clear and delicate projection image.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A megapixel projection module for headlights, characterized in that: The invention comprises a light source (1), a reflection chip (6), a converging lens group (7), a reflection mirror (8) and an imaging lens group (9), wherein the light source (1) is located below the converging lens group (7), the reflection mirror (8) is located above the converging lens group (7), the reflection chip (6) is located outside one side between the converging lens group (7) and the reflection mirror (8), and the imaging lens group (9) is located outside the other side between the converging lens group (7) and the reflection mirror (8); the light source (1) and the normal of the reflection chip (6) are arranged at 90 degrees; the light emitted by the light source (1) is converged by the converging lens group (7) and irradiated onto the reflection mirror (8), and then reflected onto the reflection chip (6), subjected to pixelated reflection by the reflection chip (6), and finally reflected onto the imaging lens group (9), and the imaging lens group (9) projects the light onto a target area.

2. The megapixel projection module for headlights according to claim 1, characterized in that: The converging lens group (7) comprises two converging lenses.

3. The megapixel projection module for headlights according to claim 2, characterized in that: The reflector (8) is arranged to be inclined towards the reflective chip (6).

4. The megapixel projection module for headlights according to claim 3, characterized in that: The reflective chip (6) is a million-level micro-reflective chip.

5. The megapixel projection module for headlights according to claim 4, characterized in that: The imaging lens group (9) comprises a plurality of imaging lenses, and the plurality of imaging lenses are arranged sequentially from left to right.

6. The megapixel projection module for headlights according to claim 5, characterized in that: A light converging cavity (2) is arranged outside the light source (1), the reflective chip (6), the converging lens group (7) and the reflector (8), and an imaging lens barrel (3) is arranged outside the imaging lens group (9).

7. The megapixel projection module for headlights according to claim 6, characterized in that: A heat sink (5) is arranged on the left side of the light converging cavity (2), and a control circuit board (4) is arranged on the top of the light converging cavity (2) and the heat sink (5).

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