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Projection device for micro-projection light module of motor vehicle headlamp

A technology of miniature projection and projection device, which is applied in the direction of motor vehicles, headlights, road vehicles, etc., and can solve problems such as high cost

Pending Publication Date: 2022-04-15
AUTOMOTIVE LIGHTING REUTLINGEN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This results in high requirements for the positioning of the individual layers relative to one another, which leads to undesirably high costs

Method used

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  • Projection device for micro-projection light module of motor vehicle headlamp
  • Projection device for micro-projection light module of motor vehicle headlamp
  • Projection device for micro-projection light module of motor vehicle headlamp

Examples

Experimental program
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Embodiment Construction

[0041] in detail, figure 1 The structure of the micro projection light module 10 is shown. Light from a light source 12 (eg LED, laser) is collimated by auxiliary optics 14 and illuminates a projection device 16 which projects the light onto the road. Projection device 16 is here formed by a plurality of microprojectors 18 arranged in an array of rows and columns.

[0042] figure 2 show figure 1 The cross-section of the miniature projection light module 10. This section is parallel to the plane spanned by the optical axis 20 of the device and the vertical line 22 when used as intended in a motor vehicle.

[0043] The projection device 16 is composed of a first light-transmitting layer 24, an aperture layer 26 and a second light-transmitting layer 28, wherein the aperture layer 26 includes a first sub-cavity 30 that is almost opaque and a second sub-cavity that is light-transmitting 32.

[0044] The projection device 16 is one piece. It consists only of materials joined...

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Abstract

The invention proposes a one-piece projection device for a micro-projection light module of a motor vehicle headlamp, having a plurality of micro-projectors, each of which has an aperture. The aperture is composed of a first sub-chamber and a second sub-chamber which, in addition to a width and a height transverse to the length, have a depth extending parallel to the length, which depth is greater than 5% of the length of the micro-projector and extends in the direction of the length of the micro-projector, the transmissivity of the first sub-containing cavity is smaller than that of the second sub-containing cavity.

Description

technical field [0001] The invention relates to a one-piece projection device for a micro projection light module of a motor vehicle headlight according to the preamble of claim 1 . Such a projection device is known from WO2019 / 120900A. Background technique [0002] Another projection device for a miniature projection light module of a motor vehicle headlight is known from DE 10 2018 101991 B3. [0003] In addition to these light modules for motor vehicle headlights, conventional light module concepts for headlights are mainly based on LED light sources or laser light sources, the light of which is collected by primary optics and distributed in a regular manner via lenses as projection optics. on the road. [0004] In general, the aim is to realize inexpensive optical modules with high efficiency, low structural depth and high tolerance insensitivity. Even though LED or laser light sources can achieve lower construction depths compared to traditional halogen lamps, tradit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S41/20F21W102/13F21W107/10
CPCF21S41/265F21S41/143F21S41/322F21S41/285F21S41/43
Inventor 费利克斯·弗雷塔格埃米尔·P·斯特凡诺夫乌维·布雷滕巴赫托马斯·赫林卢帆托比亚斯·鲁兹塞巴斯蒂安·席尔德曼
Owner AUTOMOTIVE LIGHTING REUTLINGEN GMBH
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