Low-cost conversion of a bi-directional reflectance distribution station to off-axis rejection testing of a cold stop

Mark A. Lundgren

doi:10.1117/12.167960

1 February 1994 Low-cost conversion of a bi-directional reflectance distribution station to off-axis rejection testing of a cold stop

Mark A. Lundgren

Author Affiliations +

Proceedings Volume 1994, Advanced Optical Manufacturing and Testing IV; (1994) https://doi.org/10.1117/12.167960
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

An existing 10.6 micrometers CO₂ laser bi-directional reflectance distribution function (BRDF) station was converted into a small scale off-axis rejection (OAR) facility for testing the point source transmittance (PST) of an infrared (IR) sensor cold shield at room temperature with a room temperature detector. A cold shield with a defective coating was identified; the coating was refurbished and performance remeasured. An improved performance was observed. A simple Gaussian integration technique for total transmitted energy was applied to assess performance in the sensor. Construction of a combined BRDF/OAR facility for component and telescope testing is discussed.

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Mark A. Lundgren "Low-cost conversion of a bi-directional reflectance distribution station to off-axis rejection testing of a cold stop", Proc. SPIE 1994, Advanced Optical Manufacturing and Testing IV, (1 February 1994); https://doi.org/10.1117/12.167960

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