Drive circuit of laser source of laser projector

A technology for laser projectors and driving circuits, which is applied to circuits, lasers, laser components, etc., can solve problems such as difficult to meet the driving requirements of laser light sources and large volume of laser driving circuits, so as to avoid the use of electronic devices and reduce the volume The effect of small, constant current output

Inactive Publication Date: 2012-08-22
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary laser drive circuits are large in size, and it is difficult to meet the drive requirements of laser light sources in projectors with limited volume.

Method used

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  • Drive circuit of laser source of laser projector
  • Drive circuit of laser source of laser projector
  • Drive circuit of laser source of laser projector

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0033] Such as figure 1 as shown, figure 1 It is a schematic diagram of a driving circuit of a laser light source of a laser projector according to an embodiment of the present invention, and the driving circuit is composed of two parallel driving generating circuits, that is, a first driving generating circuit 10 and a second driving generating circuit 20 . The implementation of the first drive generation circuit 10 and the second drive generation circuit 20 is exactly the same, the two drive generation circuits are symmetrically distributed between the input interface 000 and the output interface 001, the two drive circuits are integrated together, and at the same time through the output interface 001 Powering the lase...

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Abstract

The invention discloses a drive circuit of a laser source of a laser projector, which comprises an input interface, a first drive generation circuit, a second drive generation circuit and an output interface, wherein the first drive generation circuit and the second drive generation circuit are two parallel drive generation circuits and are symmetrically distributed between the input interface and the output interface; and the two parallel drive generation circuits are integrated together and connected with an external power supply system through the input interface, and output a transformed voltage through the output interface. The invention satisfies the electric demands for the laser source of the laser projector, greatly reduces the volume of the drive circuit board, implements control on the power of the laser device, and has the function of current control for accurately controlling the emergent light ratio.

Description

technical field [0001] The invention relates to the technical field of laser projectors, in particular to a driving circuit for a laser light source of a laser projector. Background technique [0002] At present, projection technology is changing with each passing day. With the development of science and technology, the projection industry has also developed into a supreme field. It mainly makes projection technology closer to life by making traditional large projectors compact, portable, miniaturized, entertaining, and practical. and entertainment. [0003] At present, most projectors use metal halide lamps. When the lamp is on, the voltage at both ends of the lamp is about 60-80V, the gas pressure in the lamp is greater than 10kg / cm, the temperature is thousands of degrees, and the filament is semi-melted. state. Therefore, it is strictly forbidden to vibrate or move the projector when it is turned on to prevent the bulb from bursting, and the power cannot be disconnecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/09H01S5/042
Inventor 施安存王国华段靖远
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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