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vehicle headlights

A technology of headlights and vehicles, applied in the field of vehicle headlights, can solve the problems of uneven load and power loss of DC-DC converters, and achieve the effects of saving cost and structural space, reducing power loss, and low cost

Active Publication Date: 2019-12-17
ZKW GRP GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a linear stage connected downstream leads to an uneven loading of the DC-DC converter and to permanent power losses

Method used

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  • vehicle headlights
  • vehicle headlights
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Examples

Experimental program
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Embodiment Construction

[0019] exist figure 1 The components that are important for the headlight according to the invention are shown in , wherein it is clear that the motor vehicle headlight also contains many other components, which enable its meaningful use in the motor vehicle, for example in particular in Significant use in passenger cars or motorcycles. The optical starting point of the headlight is a laser source 1 which emits a laser beam 2 and to which a laser control device 3 is assigned, wherein the control device 3 is used for supplying current and for monitoring the laser emission or It is used, for example, to control the temperature and is also provided for modulating the intensity of the emitted laser beam. In the context of the present invention, “modulation” is understood to mean that the intensity of the laser light source can be varied, whether continuously or pulsed in the sense of being switched on and off. It is important that, depending on the angular position of the mirror...

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Abstract

Vehicle headlight with a laser source (1) with at least one laser diode branch (Z) with at least one modulated laser diode (D) L ), wherein the laser beam ( 2 ) of at least one laser diode can be steered by means of an optical scanner ( 7 ) in a scanning manner onto the light conversion device ( 8 ) in order to generate a bright image ( 11 ) on the light conversion device, The light image is projected via the mapping system ( 12 ) as a light image ( 11 ′) onto the roadway ( 13 ), and the vehicle headlights have a laser diode control device ( 3 ) and a computing unit ( 4) The sensor signals (s1 . m ) and the vehicle headlight has a regulated current supply ( 15 ) for the laser diode actuation. In this case, the laser diode branch (Z) is bridged by a regulated parallel circuit (P), which is designed as a current controller of the laser diode control device (3), the current controller having an analog controller (16, T2) ), and the modulated signal (s m ) is fed to the analog regulator.

Description

technical field [0001] The invention relates to a vehicle headlight with a laser source having at least one laser diode branch with at least one modulated laser diode, wherein the laser beam of the at least one laser diode can be detected by means of an optical scanner. The way in which the scanning is carried out is diverted to a light conversion device in order to generate a light image on said light conversion device, which is projected as a light image onto the roadway via a mapping system, and the vehicle headlights have laser diodes An actuation device and a computing unit assigned to the laser diode actuation device, to which sensor signals are supplied and which provides modulation signals for the laser diode actuation device, and the vehicle headlights have a function for the laser diode actuation regulated current supply for the device. Background technique [0002] The spread of optical systems based on laser diodes in the automotive sector requires ever higher m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCB60Q1/04F21S41/663H05B45/395H05B45/44H05B45/37F21S41/16F21S41/176Y02B20/30H05B45/38F21S41/14F21Y2115/30B60Q1/26B60Q2400/50G02B27/30H01S3/0071H01S3/1305
Inventor E.维伯
Owner ZKW GRP GMBH