Reflective Baffle System With Multiple Bounces

William I Linlor

doi:10.1117/12.939500

3 June 1987 Reflective Baffle System With Multiple Bounces

William I Linlor

Proceedings Volume 0675, Stray Radiation V; (1987) https://doi.org/10.1117/12.939500
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

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.

Citation Download Citation

William I Linlor "Reflective Baffle System With Multiple Bounces", Proc. SPIE 0675, Stray Radiation V, (3 June 1987); https://doi.org/10.1117/12.939500

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