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New light absorbing material for grazing angles

 
: Yevtushenko, A.; Finck, A. von; Katsir, D.; Duparré, A.

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Fulltext ()

Sodnik, Z. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
International Conference on Space Optics, ICSO 2018 : Chania, Greece, 9-12 October 2018
Bellingham, WA: SPIE, 2019 (Proceedings of SPIE 11180)
ISBN: 978-1-5106-3077-2
Paper 111808D, 7 pp.
International Conference on Space Optics (ICSO) <12, 2018, Chania>
English
Conference Paper, Electronic Publication
Fraunhofer IOF ()

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.

: http://publica.fraunhofer.de/documents/N-574962.html