Laser confocal automatic adjustment system for attitude of spherical component

GUO Hao; XIAO Yang; DONG Song; WANG Longxiao; ZHAO Weiqian

doi:10.5768/JAO201940.0107001

Journal of Applied Optics > 2019 > 40(1): 132-137. > DOI: 10.5768/JAO201940.0107001

GUO Hao, XIAO Yang, DONG Song, WANG Longxiao, ZHAO Weiqian. Laser confocal automatic adjustment system for attitude of spherical component[J]. Journal of Applied Optics, 2019, 40(1): 132-137. DOI: 10.5768/JAO201940.0107001

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Laser confocal automatic adjustment system for attitude of spherical component

School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China

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Received Date: July 08, 2018
Revised Date: August 19, 2018

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Abstract

Abstract

In order to solve the problem of poor efficiency and repeatability during adjusting the attitude of spherical components in laser differential confocal components parameters measurement system, we designed a laser confocal automatic adjustment system for attitude of spherical component. Based on the laser confocal principle, we set up the relationship between the component misalignment and the adjusting value of electric four-dimensional adjustment mechanism, analyzed the attitude information of the component according to the airy spot position constantly measured by CCD detectors, and realized the attitude automatic adjustment by using the closed-loop feedback control algorithm. Finally, we built an automatic adjustment experiment device. The experimental results show that the shift adjustment resolution of the electric adjustment mechanism reaches 0.5 μm, and the tilt resolution reaches 10″. The adjustment system can quickly and stably adjust the attitude misalignment of the device under test to the error range, effectively improving the repeatability and efficiency of the adjustment. It is especially important for the laser differential confocal measurement system to realize the automatic measurement of spherical component parameters.
- laser confocal,
- automatic adjustment system,
- four-dimensional adjustment mechanism,
- attitude of spherical component

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References

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Laser confocal automatic adjustment system for attitude of spherical component