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Proceedings Paper

Design of a wide-angle fast optical system with anamorphic mirrors
Author(s): Takayuki Nakano; Yasuhisa Tamagawa
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Paper Abstract

All-reflective systems have been applied to optical systems because of less material limitations compared with refractive systems. The key to design an all-reflective system is how to widen the field view and the aperture without obscurations of the rays by the mirrors. In order to avoid the obscurations, many systems have been designed to work off-axis with respect to the field angle, which show rotational asymmetry around the optical axis. In this paper, we propose a design method adapted effectively to this asymmetry by use of anamorphic mirrors and an elliptic aperture. In our method two main design factors, placement of mirrors and enlargement of the aperture, are separately optimized. We show a design example of a three-mirror system reaching an F-number of 1.2 with 18×14 degrees field angle.

Paper Details

Date Published: 23 December 2002
PDF: 8 pages
Proc. SPIE 4832, International Optical Design Conference 2002, (23 December 2002); doi: 10.1117/12.486440
Show Author Affiliations
Takayuki Nakano, Mitsubishi Electric Corp. (Japan)
Yasuhisa Tamagawa, Mitsubishi Electric Corp. (Japan)


Published in SPIE Proceedings Vol. 4832:
International Optical Design Conference 2002

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