Stray light test station for measuring point source transmission and thermal background of visible and infrared sensors

Gary L. Peterson

doi:10.1117/12.794898

2 September 2008 Stray light test station for measuring point source transmission and thermal background of visible and infrared sensors

Gary L. Peterson

Author Affiliations +

Proceedings Volume 7069, Optical System Contamination: Effects, Measurements, and Control 2008; 70690M (2008) https://doi.org/10.1117/12.794898
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

Breault Research Organization has designed and built a stray light test station. The station measures the point source transmission and background thermal irradiance of visible and infrared sensors. Two beam expanders, including a large 0.89 meter spherical mirror, expand and collimate light from laser sources at 0.658 and 10.6 µm. The large mirror is mounted on a gimbal to illuminate sensors at off-axis angles from 0° to 10°, and azimuths from 0° to 180°. Sensors with apertures as large as 0.3 meters can be tested with the existing facility. The large mirror is placed within a vacuum chamber so cryogenic infrared sensors can be tested in a vacuum environment. A dark cryogenic cold plate can be translated into the field of view of a sensor to measure its background thermal irradiance.

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Gary L. Peterson "Stray light test station for measuring point source transmission and thermal background of visible and infrared sensors", Proc. SPIE 7069, Optical System Contamination: Effects, Measurements, and Control 2008, 70690M (2 September 2008); https://doi.org/10.1117/12.794898

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