9 September 2010 Considerations for selecting a retrosphere in interferometric optical testing of objectives
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Proceedings Volume 7652, International Optical Design Conference 2010; 765216 (2010) https://doi.org/10.1117/12.868876
Event: International Optical Design Conference 2010, 2010, Jackson Hole, WY, United States
Abstract
A retrosphere (either a convex ball or a concave mirror) is a convenient element to use in the interferometric optical test of an objective. However, under some conditions the retrosphere can cause ambiguities in the interferogram due to the effects of Fresnel diffraction. This paper provides diffracted beam propagation analysis and results showing the magnitude of these effects for a range of system f- numbers and retrosphere radii. The paper also presents an alternative retroreflector design concept that avoids the ambiguities.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Michael Rodgers, J. Michael Rodgers, "Considerations for selecting a retrosphere in interferometric optical testing of objectives", Proc. SPIE 7652, International Optical Design Conference 2010, 765216 (9 September 2010); doi: 10.1117/12.868876; https://doi.org/10.1117/12.868876
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