Reflectance of small-size optics

V. V. Nosov

doi:10.1117/12.675334

21 April 2006 Reflectance of small-size optics

V. V. Nosov

Proceedings Volume 6160, Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics; 61601O (2006) https://doi.org/10.1117/12.675334
Event: Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 2005, Tomsk, Russian Federation

Abstract

Expressions for reflection coefficient (reflectance) of commonly used small-size optics (TV cameras, video cameras, cameras, binoculars etc.), when a receiver acts as a reflector, have been obtained. A generalized Airy formula taking into account phase incursion owing to surfaces curvature has been determined. It is shown that primary contribution into small-size optics reflectance is made by an objectives front (entrance) surface. This surface is usually an air-crownglass boundary with a reflectance of about 4%. The reflection coefficient of such optics coincides in shape with a typical initial condition for Gaussian beam. It is shown that a plane wave falling on the small-size optics reflects in the form of spherical wave.

Citation Download Citation

V. V. Nosov "Reflectance of small-size optics", Proc. SPIE 6160, Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 61601O (21 April 2006); https://doi.org/10.1117/12.675334

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