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Proceedings Paper

Reflective Baffle System With Multiple Bounces
Author(s): William I Linlor
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Paper Abstract

Reflective baffles are proposed to reject off-axis light entering a telescope. Toroidal surfaces and adjacent cones are positioned so that off-axis rays make multiple reflections between these two surfaces. Meridional rays are reflected approximately parallel to the entering direction. Skew rays are reflected obliquely, but leave the telescope aperture. The range of incident angles for which these reflections are obtained is approximately 45°. A system is described that is designed specifically for the Space Shuttle Infrared Telescope Facility (SIRTF). Because of its reflective properties, the proposed baffle system rejects about 90° of the heat load from the SIRTF sunshade that would be absorbed in systems of conventional black baffles.

Paper Details

Date Published: 3 June 1987
PDF: 23 pages
Proc. SPIE 0675, Stray Radiation V, (3 June 1987); doi: 10.1117/12.939500
Show Author Affiliations
William I Linlor, NASA Ames Research Center (United States)

Published in SPIE Proceedings Vol. 0675:
Stray Radiation V
Robert P. Breault, Editor(s)

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