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Proceedings Paper

Baffle knife-edge radius requirements for exoatmospheric interceptors and surveillance sensors
Author(s): Thomas Gregg Carter
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Paper Abstract

The knife-edges of baffle vanes can specularly reflect out-of-field optical radiation in such a manner that it can scatter from the primary mirror into the field-of-view thereby degrading the performance of the optical sensor. Decreasing the radius of curvature of the knife-edges is an obvious technique for minimizing this effect. However, the x-ray hardness of the baffle vanes is negatively impacted by decreasing the radius of curvature of the knife-edges. Thus, there are tradeoff considerations on the radius of curvature of the baffle knife-edges. This results in a need for an accurate requirement on the radius of curvature of the baffle knife-edges. The Physitron-developed computer simulation KNIFEDGE is used to compute the required baffle knife-edge radius for exoatmospheric interceptors and surveillance sensors. A scaling expression is then derived that allows the results to be scaled to sensor designs other than those considered in the investigation.

Paper Details

Date Published: 12 February 1993
PDF: 7 pages
Proc. SPIE 1753, Stray Radiation in Optical Systems II, (12 February 1993); doi: 10.1117/12.140719
Show Author Affiliations
Thomas Gregg Carter, Physitron, Inc. (United States)


Published in SPIE Proceedings Vol. 1753:
Stray Radiation in Optical Systems II
Robert P. Breault, Editor(s)

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