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A device and method for measuring three-dimensional surface shape based on one-dimensional non-diffracting beam

A non-diffracting beam, three-dimensional surface technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of resolution and accuracy changes, affecting the measurement resolution and accuracy, and achieve the effect of a simple method

Active Publication Date: 2019-04-23
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The above two methods use a line laser to generate a line laser, but because the line laser is focused by a cylindrical mirror, it diverges during transmission and its width changes, and the laser width significantly affects the measurement resolution and accuracy, so When the depth of the object is different, the resolution and accuracy will also change, which needs to be solved

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  • A device and method for measuring three-dimensional surface shape based on one-dimensional non-diffracting beam
  • A device and method for measuring three-dimensional surface shape based on one-dimensional non-diffracting beam
  • A device and method for measuring three-dimensional surface shape based on one-dimensional non-diffracting beam

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[0025] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The implementations are only some of the implementations of the present application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0026] see figure 1 , the embodiment of the present application provides a device for measuring three-dimensional surface shape based on a one-dimensional non-diffracting beam. The object to be measured 7 , the calibration board 8 and the power module 9 .

[0027] In this embodiment, the lighting module 2 inclu...

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Abstract

The invention provides an device and method for measuring a three-dimensional surface shape based on one-dimensional diffractive-free light beams, wherein the device comprises a base, a lighting module, an electric rotary table, an imaging module, a motion controller, a host computer, an object to be measured, a calibration board and a power module. The device and method for measuring a three-dimensional surface shape based on one-dimensional diffractive-free light beams can reduce the influence of laser width on a measurement result.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional surface shape measurement, and in particular relates to a device and method for measuring a three-dimensional surface shape based on a one-dimensional non-diffraction beam. Background technique [0002] Three-dimensional surface or three-dimensional profile measurement technology is widely used in industry, scientific research, national defense and other fields, such as online detection in the processing and manufacturing of automobile bodies, aircraft fuselages, ship hulls, steam turbine blades, complex parts, etc., and three-dimensional modeling of teeth, shoe lasts, etc. . High-resolution and high-precision three-dimensional surface measurement is an essential link to ensure product processing quality, improve product performance or perform reverse engineering. [0003] At present, there are two types of object three-dimensional surface shape measurement technology: contact type and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/25
CPCG01B11/25
Inventor 曹兆楼刘玉柱李金花咸冯林裴世鑫
Owner NANJING UNIV OF INFORMATION SCI & TECH