<bold/>Application of polarization imaging in measurement of optical curvature radius<bold/>

LIU Zhiying; XIAO Shengzhe; QIN Tianxiang

doi:10.5768/JAO202142.0103001

Journal of Applied Optics > 2021 > 42(1): 95-103. > DOI: 10.5768/JAO202142.0103001

LIU Zhiying, XIAO Shengzhe, QIN Tianxiang. Application of polarization imaging in measurement of optical curvature radius[J]. Journal of Applied Optics, 2021, 42(1): 95-103. DOI: 10.5768/JAO202142.0103001

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Application of polarization imaging in measurement of optical curvature radius

Key Laboratory of Optoelectric Measurement and Optical Information Transmission Technology, Ministry of Education, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China

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Received Date: June 15, 2020
Revised Date: September 09, 2020
Available Online: December 27, 2020

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Abstract

Abstract

In order to ensure the quality of whole optical system, it is important to measure and check the optical curvature radius accurately. The method of mechanical spherometer and the method of optical projection were combined, and the photoelectric image method was used to measure the vector height, then the radius could be calculated indirectly. The influence caused by edge error of measured element on the accuracy of the vector height and curvature radius was analyzed. Polarization imaging and general imaging were used to measure the height and compare the results, and it is found that polarization images can have better edge details, the accuracy of the vector height was effectively improved, and the error of the optical curvature radius was reduced by more than 0.5%. The results show that the method of polarization imaging has important application value in measuring the optical curvature radius.
- optical curvature radius,
- vector height,
- chord length,
- polarization imaging,
- general imaging

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References

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Application of polarization imaging in measurement of optical curvature radius