27 September 2016 Stray light measurement for point source transmittance of space optical systems
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Proceedings Volume 9684, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment; 96842V (2016) https://doi.org/10.1117/12.2243405
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China
Abstract
The increased sensitivity of space-based sensors has imposed greater stray light performance goals on telescope design. To meet the demand, a stray light test station for measuring point source transmission (PST) has been built with a lower threshold and higher accuracy. The station is nearly all black with dimensions of 28m long by 8m wide by 9m high. it is coupled with a double cylindrical chamber that reflects the specular light away from the instrument under test. The chamber is a Class 6 cleanroom. The station will allow measuring the instruments with up to a 1 meters diameter, and to perform these measurements at visible and infrared wavelengths. The instrument under test will allow to scan at azimuth angles ±110°, and at elevation ±15°. The tests were performed to estimate stray light characteristics of two optical instruments. Test results demonstrated PST performance below 1×10-7 at visible wavelengths, and 1×10-6 at infrared wavelengths.
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Qinfang Chen, Qinfang Chen, Zhen Ma, Zhen Ma, Xinyao Li, Xinyao Li, Zhihai Pang, Zhihai Pang, Liang Xu, Liang Xu, Zhaohui Li, Zhaohui Li, } "Stray light measurement for point source transmittance of space optical systems", Proc. SPIE 9684, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment, 96842V (27 September 2016); doi: 10.1117/12.2243405; https://doi.org/10.1117/12.2243405
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