Optical axis verticality adjustment apparatus and adjustment method adopting same

A technology for adjusting device and verticality, applied in the field of visual measurement, can solve the problems of non-vertical and large error of measurement results, and achieve the effect of small calculation amount, reduction of verticality error and light weight

Inactive Publication Date: 2016-02-17
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
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Problems solved by technology

Solved the technical problem that the optical axis of the camera is not perpendicular to the plane of the measured object, which caused large errors in the measurement results

Method used

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  • Optical axis verticality adjustment apparatus and adjustment method adopting same
  • Optical axis verticality adjustment apparatus and adjustment method adopting same
  • Optical axis verticality adjustment apparatus and adjustment method adopting same

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Embodiment

[0028] Such as Figures 1 to 5 shown. The optical axis verticality adjustment device of the present invention comprises an image processing system 4, an image acquisition module 2 (camera) fixed on the electric angle stage 1, and a workbench arranged below the image acquisition module 2; the electric angle stage 1 The image processing system 4 is connected with the image acquisition module 2 respectively; the image processing system 4 processes the images collected by the image acquisition module 2, and controls the movement angle of the electric angle stage 1.

[0029] The workbench is used to place the round hole target 3, the base material of the round hole target 3 is optical flat glass, the round hole is coated with a round hole pattern, the round hole pattern is light-transmitting, and the base material is reflective. The flatness is less than 5um, the position accuracy of the circular hole pattern is less than 2um, and the roundness of the circular hole pattern is less...

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Abstract

The invention discloses an optical axis verticality adjustment apparatus and an adjustment method adopting the same. The apparatus comprises a round hole target, an image processing system, an image acquisition module fixed to a motorized goniometer stage, and a worktable arranged below the image acquisition module, wherein the round hole target is closely clung onto the plane of the worktable; a lens of the image acquisition module is opposite to the round hole target; the image acquisition module obtains an image of the round hole target; and the image processing system computes center coordinate data of the round hole target through the image, computes the verticality according to the center coordinate data, and drives the motorized goniometer stage to adjust an angle of an optical axis. The apparatus and the adjustment method adopting the same have the advantages of simple structure, convenience for operation, high efficiency, high precision and the like.

Description

technical field [0001] The invention relates to visual measurement technology, in particular to an optical axis perpendicularity adjustment device and an adjustment method thereof. Background technique [0002] When collecting images with an optical lens camera, if the optical axis of the lens is not perpendicular to the object to be photographed, the imaging of the object will be geometrically deformed, resulting in the loss of the corresponding position and shape relationship between the image and the object, resulting in distortion of the object. directly affect the accuracy of imaging measurement. Especially in high-precision, small target, long-distance two-dimensional imaging measurement, the non-perpendicularity between the system optical axis and the measured object plane will cause errors in the measurement results, and the errors caused by small deflection angles cannot be ignored. [0003] At present, the commonly used optical axis perpendicularity error correcti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/00G02B7/00G02B7/02
Inventor 叶峰陈剑东赖乙宗王敏洪峥
Owner SOUTH CHINA UNIV OF TECH
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