Stress optical path difference analysis of off-axis lens ray trace footprint

Ming-Ying Hsu; Chia-Yen Chan; Wei-Cheng Lin; Kun-Huan Wu; Chih-Wen Chen; Shenq-Tsong Chan; Ting-Ming Huang

doi:10.1117/12.2019054

22 June 2013 Stress optical path difference analysis of off-axis lens ray trace footprint

Ming-Ying Hsu, Chia-Yen Chan, Wei-Cheng Lin, Kun-Huan Wu, Chih-Wen Chen, Shenq-Tsong Chan, Ting-Ming Huang

Proceedings Volume 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013); 87692K (2013) https://doi.org/10.1117/12.2019054
Event: International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 2013, Singapore, Singapore

Abstract

The mechanical and thermal stress on lens will cause the glass refractive index different, the refractive index of light parallel and light perpendicular to the direction of stress. The refraction index changes will introduce Optical Path Difference (OPD). This study is applying Finite Element Method (FEM) and optical ray tracing; calculate off axis ray stress OPD. The optical system stress distribution result is calculated from finite element simulation, and the stress coordinate need to rotate to optical path direction. Meanwhile, weighting stress to each optical ray path and sum the ray path OPD. The Z-direction stress OPD can be fitted by Zernike polynomial, the separated to sag difference, and rigid body motion. The fitting results can be used to evaluate the stress effect on optical component.

Citation Download Citation

Ming-Ying Hsu, Chia-Yen Chan, Wei-Cheng Lin, Kun-Huan Wu, Chih-Wen Chen, Shenq-Tsong Chan, and Ting-Ming Huang "Stress optical path difference analysis of off-axis lens ray trace footprint", Proc. SPIE 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 87692K (22 June 2013); https://doi.org/10.1117/12.2019054

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KEYWORDS

Ray tracing

Geometrical optics

Finite element methods

Refractive index

Zernike polynomials

Optical components

Glasses

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