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Method and system for generating sinusoidal structured light

A technology for generating system and structured light, which can be applied to optical devices, devices that control laser output parameters, measuring devices, etc., and can solve the problems of limited coding of square-wave structured light and instability of gratings.

Inactive Publication Date: 2017-09-05
QINGDAO XIAOYOU INTELLIGENT TECH CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a sinusoidal structured light generation method and system based on MEMS micro-vibrating mirrors and LD lasers, aiming to solve the problem of limited square wave structured light encoding and grating in the process of 3D reconstruction of complex contour surfaces. unstable problem

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  • Method and system for generating sinusoidal structured light
  • Method and system for generating sinusoidal structured light
  • Method and system for generating sinusoidal structured light

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[0031] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0032] like figure 1 The sinusoidal structured light generation system shown includes an optical path composed of micro-vibrators, double-sided lenses and lasers arranged in sequence, and also includes a micro-vibration mirror driving module, a laser driving module, an FPGA module, an ARM module, a micro The control circuit composed of the galvanometer feedback module and the laser feedback module, in which the micro-vibration mirror drive module controls the connection of the micro-vibration mirror, the laser drive module controls the connection of the laser, the FPGA module is connected to the ARM module, and the micro-vibration mirror drive module and the laser drive module are respectively It is connected to the FPGA module, and the ...

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Abstract

The invention discloses a method and a system for generating sinusoidal structured light. The system comprises a light path formed by a micro galvanometer, a two-sided lens and a laser arranged sequentially and a control circuit formed by a micro galvanometer driving module, a laser driving module, an FPGA module, an ARM module, a micro galvanometer feedback module and a laser feedback module, wherein the micro galvanometer driving module is in control connection with the micro galvanometer; the laser driving module is in control connection with the laser; the FPGA module is connected with the ARM module; the micro galvanometer driving module and the laser driving module are connected with the FPGA module respectively; and the micro galvanometer feedback module and the laser feedback module are connected with the ARM module respectively. The LD laser and the MEMS micro galvanometer can be monitored and modulated in real time, a clear and stable sinusoidal structured light laser grating with proper brightness can be obtained, modulation can be carried out according to different phases of different frequencies to complete three-dimensional reconstruction of a measured object, and good application is realized in structured light scanning and 3D modeling processes.

Description

technical field [0001] The invention relates to the field of structured light scanning imaging, in particular to a method and system for generating sinusoidal structured light based on MEMS micro-vibrating mirrors and LD lasers. Background technique [0002] The structured light scanning and 3D modeling technology using laser light source is becoming more and more mature, but at present, the frequency of a single fringe cannot It meets the requirements of high-precision measurement, and this also limits the application of square-wave structured light to 3D reconstruction. In addition, the current light generator device often has the problem of grating instability due to deviation of the micro-vibration mirror during operation. [0003] Therefore, prior art also needs further improvement and development. Contents of the invention [0004] The purpose of the present invention is to provide a sinusoidal structured light generation method and system based on MEMS micro-vibra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24H01S5/06
CPCG01B11/24H01S5/06
Inventor 杜先鹏郭俊兴代启强丁大海刘栋刘艳李显龙郭会芹
Owner QINGDAO XIAOYOU INTELLIGENT TECH CO LTD
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