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Proceedings Paper

Manufacture of Φ600 R-C optical system
Author(s): Peiming Hao; Xinglong Li; Liyin Yuan; Kexin Li; Lianxiao Fu; Senlin Zhou; Xianmin Wang
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Paper Abstract

In the field of space flight, aviation and astronomy, R-C (Ritchey-Chretien) camera composed by two hyperboloid mirrors is one of the main instruments for detection and photography. A R-C system has been designed, which is composed of a primary mirror with clear aperture of Φ0 = 600 mm, radius of curvature of 1440 mm, conic constant k1 of-1.00486, relative aperture A1 of 1/1.2, lightweight ratio of 53%; and a secondary mirror with clear aperture of 12-92 mm, curvature radius of 236.2 mm, conic constant k2 of-1.66923. Therefore, the focal length of the R-C optical system is 6000 mm, and the relative aperture A is 1/10. Based on classical methods, the new testing methods have been developed. The R-C optical system has been tested by both classical and new test methods, the measurement results have been compared with a perfect agreement. The manufacture precision of the secondary mirror includes the spot diaphragm with a diameter of 0.02mm in size and PV 0.12λ (λ=0.6328μm) of wavelength. The spot diaphragm's size of the primary mirror is 0.02mm. The spot diaphragm's size of the system is 0.02mm, RMS is 0.18λ and PV is 1.2 λ measured by WYKO laser interferometer. Because it is used in infrared wave band, this optical system has already met the designed technical data perfectly. The R-C optical system has been checked and accepted by the user.

Paper Details

Date Published: 30 May 2006
PDF: 6 pages
Proc. SPIE 6148, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 614808 (30 May 2006); doi: 10.1117/12.674046
Show Author Affiliations
Peiming Hao, Tongji Univ. (China)
Xinglong Li, Tongji Univ. (China)
Liyin Yuan, Tongji Univ. (China)
Kexin Li, Tongji Univ. (China)
Lianxiao Fu, Tongji Univ. (China)
Senlin Zhou, Tongji Univ. (China)
Xianmin Wang, Shanghai Institute of Technical Physics (China)


Published in SPIE Proceedings Vol. 6148:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Yudong Zhang; Wenhan Jiang; Myung K. Cho, Editor(s)

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