Two-mirror optical system with a small fold mirror

XinPing Liu; Yingcai Li; Jianfeng Yang

doi:10.1117/12.322028

21 September 1998 Two-mirror optical system with a small fold mirror

XinPing Liu, Yingcai Li, Jianfeng Yang

Proceedings Volume 3482, International Optical Design Conference 1998; (1998) https://doi.org/10.1117/12.322028
Event: International Optical Design Conference, 1998, Kona, HI, United States

Abstract

A new configuration of two-mirror optical system with a small fold mirror is presented in this paper. Consisting of a concave (positive power) primary mirror followed by a small flat mirror, a concave (positive power) secondary mirror, four lenses and a beam splitter, it gives the excellent image quality. A 1.5-m EFL, F/10 system of the upper configuration is designed over the 4° field angle and 0.50 ~ 0.70 μm wavelength range. The aberrations have been highly corrected and the distortion is less than 0.3% over the field. The obscuration could be minimized by reducing primary radius of curvature and avoiding the spider that holds the small fold mirror.

Citation Download Citation

XinPing Liu, Yingcai Li, and Jianfeng Yang "Two-mirror optical system with a small fold mirror", Proc. SPIE 3482, International Optical Design Conference 1998, (21 September 1998); https://doi.org/10.1117/12.322028

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