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12 July 2019 New light absorbing material for grazing angles
A. Yevtushenko, A. von Finck, D. Katsir, A. Duparré
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Proceedings Volume 11180, International Conference on Space Optics — ICSO 2018; 111808D (2019) https://doi.org/10.1117/12.2536220
Event: International Conference on Space Optics - ICSO 2018, 2018, Chania, Greece
Abstract
One of the largest challenges for optical systems is eliminating stray light generated by reflections off the walls and other optical elements of the device. Most black coatings are not sufficiently effective at grazing angles. Acktar’s black coatings exhibit particularly low residual reflectance and have been implemented in various instruments. The new proposed material exhibits particularly low hemispherical and specular reflectance – especially at grazing angles.
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A. Yevtushenko, A. von Finck, D. Katsir, and A. Duparré "New light absorbing material for grazing angles", Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111808D (12 July 2019); https://doi.org/10.1117/12.2536220
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KEYWORDS
Reflectivity
Bidirectional reflectance transmission function
Stray light
Sensors
Optical design
Reflection
Optical coatings
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