Share Email Print
cover

Proceedings Paper

Analysis on influence of installation error of off-axis three-mirror optical system on imaging line-of-sight
Author(s): Lingyu Gao; Xinghua Li; Qianrui Guo; Jing Quan; Zhengyue Hu; Zhikun Su; Dong Zhang; Peilu Liu; Haopeng Li
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The internal structure of off-axis three-mirror system is commonly complex. The mirror installation error in assembly always affects the imaging line-of-sight and further degrades the image quality. Due to the complexity of the optical path in off-axis three-mirror optical system, the straightforward theoretical analysis on the variations of imaging line-of-sight is extremely difficult. In order to simplify the theoretical analysis, an equivalent single-mirror system is proposed and presented in this paper. In addition, the mathematical model of single-mirror system is established and the accurate expressions of imaging coordinate are derived. Utilizing the simulation software ZEMAX, off-axis three-mirror model and single-mirror model are both established. By adjusting the position of mirror and simulating the line-of-sight rotation of optical system, the variations of imaging coordinates are clearly observed. The final simulation results include: in off-axis three-mirror system, the varying sensitivity of the imaging coordinate to the rotation of line-of-sight is approximately 30 um/″; in single-mirror system, the varying sensitivity of the imaging coordinate to the rotation of line-of-sight is 31.5 um/″. Compared to the simulation results of the off-axis three-mirror model, the 5% relative error of single-mirror model analysis highly satisfies the requirement of equivalent analysis and also verifies its validity. This paper presents a new method to analyze the installation error of the mirror in the off-axis three-mirror system influencing on the imaging line-of-sight. Moreover, the off-axis three-mirror model is totally equivalent to the single-mirror model in theoretical analysis.

Paper Details

Date Published: 12 January 2018
PDF: 11 pages
Proc. SPIE 10621, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 106211I (12 January 2018); doi: 10.1117/12.2295191
Show Author Affiliations
Lingyu Gao, Tianjin Univ. (China)
Xinghua Li, Tianjin Univ. (China)
Qianrui Guo, Tianjin Univ. (China)
Jing Quan, Tianjin Univ. (China)
Zhengyue Hu, Tianjin Univ. (China)
Zhikun Su, Tianjin Univ. (China)
Dong Zhang, Tianjin Univ. (China)
Peilu Liu, Tianjin Univ. (China)
Haopeng Li, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 10621:
2017 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems
Jigui Zhu; Hwa-Yaw Tam; Kexin Xu; Hai Xiao; Liquan Dong, Editor(s)

© SPIE. Terms of Use
Back to Top