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Laser working circuit and 3D camera

A working circuit and laser technology, applied in the field of 3D imaging, can solve the problem of low measurement accuracy of laser working circuit

Active Publication Date: 2021-08-20
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to propose a laser working circuit, aiming to solve the technical problem of low measurement accuracy of the laser working circuit

Method used

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  • Laser working circuit and 3D camera
  • Laser working circuit and 3D camera
  • Laser working circuit and 3D camera

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a laser working circuit and a 3D camera. The laser working circuit includes a driving power supply, a switching circuit, a driving circuit, an energy storage circuit and a freewheeling circuit. The driving circuit controls the switching circuit to be turned on / off according to an externally input laser control signal. frequency to modulate the output current of the drive power supply. The energy storage circuit provides transient power for the laser when the switch circuit is turned on, and stores the input power when the switch circuit is turned off. When the switch circuit is turned off, the freewheeling circuit provides a conduction loop for the laser and releases the charge at both ends of the laser to protect the laser from damage. The invention is used to solve the technical problem of low measurement accuracy of the laser working circuit.

Description

technical field [0001] The invention relates to the technical field of 3D imaging, in particular to a laser working circuit and a 3D camera. Background technique [0002] Time-of-Flight (ToF) is a relatively new 3D imaging principle that works by illuminating a scene with a modulated light source and then taking the reflected light back to get its time difference. Since the speed of light is constant, ToF cameras can calculate the distance to each point in the scene based on the time it takes for the light to return to the camera. Through it, detailed 3D information can be collected, which can be applied to various industries, including games, financial security, automobile industry, etc. As the application of TOF cameras becomes more and more extensive, the requirements for its accuracy are getting higher and higher, and at the same time, the industry's competitiveness in terms of product size, power consumption and price is becoming more and more intense. Contents of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/042H01S5/183
CPCH01S5/0428H01S5/183
Inventor 李敬高文刚宋林东
Owner GOERTEK OPTICAL TECH CO LTD