Tilted Component Optical Design Methods For The Infrared

R. A. Buchroeder

doi:10.1117/12.953782

1 March 1974 Tilted Component Optical Design Methods For The Infrared

R. A. Buchroeder

Proceedings Volume 0039, Applications of Geometrical Optics II; (1974) https://doi.org/10.1117/12.953782
Event: Annual Technical Symposium, 1973, San Diego, United States

Abstract

The eccentric pupil ("off axis") paraboloid is the most pop, ar optical system for the infrared because there are no obstructions in the light path. However, the field of view is limited owing to coma. Better overall image quality can sometimes be obtained by using a spherical mirror such as found in the quasi-Schmidt systems. Image quality not withstanding, we often find that we need a long focal length in a short space, and so we look toward more elaborate optics than a single mirror. Two-mirror reflectors, such as the Cassegrain, can be made with an eccentric pupil so that there is no obstruction, or with a Gregorian (concave secondary, intermediate image) reflector, which is commonly used in infrared telephoto systems.

Citation Download Citation

R. A. Buchroeder "Tilted Component Optical Design Methods For The Infrared", Proc. SPIE 0039, Applications of Geometrical Optics II, (1 March 1974); https://doi.org/10.1117/12.953782

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