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Proceedings Paper

Designing and testing of off-axis three-mirror optical system for multispectral sensor
Author(s): Jun-ichi Ishigaki; Toshihiro Okamura; Kunihiro Tanikawa; Hiromichi Shirahata; Mitumasa Masutani; Hironobu Sakuta; Masaru Ushida; Hiroshi Murofushi
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Paper Abstract

Future airborne surveillance systems require high performance optics to provide high spatial resolution over wide field of view. The system for 10 km altitude needs to resolve a ground target of 10 cm over 6 degree FOV. The spectral range covers from 0.4 to 10.0 micrometer. The spectral bands of interest include the visible, near infrared, MWIR (middle wavelength infrared), and LWIR (long wavelength infrared). This paper describes the design and the experimental results of the off- axis three mirror optical system which fulfills these requirements. The three mirror anastigmat consists of two aspherical concave mirrors and a spherical convex mirror. The design is configured for a telecentric flat focal plane.

Paper Details

Date Published: 13 August 1997
PDF: 14 pages
Proc. SPIE 3061, Infrared Technology and Applications XXIII, (13 August 1997); doi: 10.1117/12.280355
Show Author Affiliations
Jun-ichi Ishigaki, Japan Defense Agency (Japan)
Toshihiro Okamura, Japan Defense Agency (Japan)
Kunihiro Tanikawa, Japan Defense Agency (Japan)
Hiromichi Shirahata, Japan Defense Agency (Japan)
Mitumasa Masutani, Japan Defense Agency (Japan)
Hironobu Sakuta, Nikon Corp. (Japan)
Masaru Ushida, Nikon Corp. (Japan)
Hiroshi Murofushi, NEC Corp. (Japan)


Published in SPIE Proceedings Vol. 3061:
Infrared Technology and Applications XXIII
Bjorn F. Andresen; Marija Strojnik, Editor(s)

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