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Proceedings Paper

Off-axis spherical element telescope with binary optic corrector
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Paper Abstract

Teledyne Brown Engineering designed, fabricated and tested an infrared telescope using only spherical mirror elements. Aberrations were corrected with a binary optic pattern etched onto a germanium lens. The telescope is an F/3, off-axis Gregorian design with no obscuration. The field-of-view (FOV) is 4x8 degrees and it operates in the 8 to 12 micron waveband, with an entrance pupil of 5 cm. The telescope demonstrates that a single binary optical element can correct a significant amount of both pupil- and field-dependent aberrations introduced by tilted spherical mirrors, while maintaining a broad wavelength band of operation. The line spread functions, measured at 10 microns on the telescope, coincided very well with theoretical line spread functions generated by a commercial lens design code.

Paper Details

Date Published: 1 December 1991
PDF: 14 pages
Proc. SPIE 1555, Computer and Optically Generated Holographic Optics; 4th in a Series, (1 December 1991); doi: 10.1117/12.50627
Show Author Affiliations
Daniel M. Brown, Teledyne Brown Engineering (United States)
Alan D. Kathman, Teledyne Brown Engineering (United States)

Published in SPIE Proceedings Vol. 1555:
Computer and Optically Generated Holographic Optics; 4th in a Series
Ivan Cindrich; Sing H. Lee, Editor(s)

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