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Headlamp for vehicles having at least one laser light source

A laser light source and headlight technology, applied in the direction of light sources, lasers, headlights, etc., to achieve the effect of preventing characteristic changes

Active Publication Date: 2017-08-18
ZKW GRP GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This sluggishness, which can be attributed primarily to the need to control relatively large currents, can lead to safety problems, for example, if an emergency shutdown or masking process is required, for example so as not to dazzle other road users, it may not be activated within the necessary short time intervals

Method used

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  • Headlamp for vehicles having at least one laser light source
  • Headlamp for vehicles having at least one laser light source
  • Headlamp for vehicles having at least one laser light source

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 Schematically shows a headlight with the components necessary for the invention and the beam path of the headlight, wherein it should be clear that a motor vehicle headlight also contains many other components which allow or motorcycles) for the proper use of motor vehicle headlights. In terms of light, the starting point of the headlight is a laser light source 1 which outputs a laser beam 2 . This laser beam 2 then passes through a first polarization filter 3 , then through an electro-optic modulator 4 formed as a Pockels cell, for example, and a second polarization filter 5 . The laser beam 2' exiting the second polarizing filter 5 is then focused by means of focusing optics 6 and directed via a beam deflecting device 7, for example formed as a micromirror, to a light conversion device 8, which, as is known, The device 8 comprises phosphors for light conversion. The focusing optics can be a lens or a lens system and also a reflector system with one or mor...

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PUM

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Abstract

The invention relates to a headlamp for vehicles, wherein the laser beam of at least one laser light source (1) is directed toward at least one light-converting means (8) in a scanning manner by means of a beam-deflecting means (7), which at least one light-converting means has a phosphor for converting light, and comprising a projection system (10) for projecting the light image (9) produced at the light-converting means onto the roadway (11), characterized in that at least one electro-optical modulator (4) is arranged in the beam path of the at least one laser light source (1), which at least one electro-optical modulator is controlled by a control unit (12) and lies before the light-converting means (8) in the beam path and affects the polarization of the light, wherein a polarization element (3, 5, 17) is arranged at least after the modulator in the beam path.

Description

technical field [0001] The invention relates to a headlight for a vehicle, in which a laser beam of at least one laser light source is guided in a scanning manner via a beam deflection device towards at least one light conversion device comprising a Phosphors for converting light and having a projection system for projecting the light image generated at the light conversion device onto the road. Background technique [0002] The use of laser light sources in motor vehicles is becoming more and more important, since laser diodes in particular enable more flexible and efficient solutions, whereby, in addition to new functional possibilities, the light beam can also be significantly increased. brightness and the light output of the headlight. [0003] However, in many known solutions no direct laser beam is emitted in order to avoid endangering humans and other living beings due to the high intensity of the extremely beamed beam. Precisely, the laser beam is directed towards ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/10F21V5/04F21V14/04F21W101/02F21W101/10F21W107/10
CPCF21Y2101/00F21Y2115/30F21S41/00F21S41/141F21S41/25F21S41/645F21V9/30G02B5/30G02B5/3083G02B26/10G02B27/28G02F1/03H01S3/107F21S41/135F21S41/675F21S41/16F21S41/176F21S41/32F21S41/285G03B21/204H04N9/3158
Inventor E.埃德林格E.韦伯
Owner ZKW GRP GMBH