3 October 1983 A Nonobscuring, Easily-Calibrated Method For Testing Ellipsoids And Hyperboloids On A Fizeau Interferometer
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Proceedings Volume 0389, Optical Systems Engineering III; (1983) https://doi.org/10.1117/12.935019
Event: 1983 Los Angeles Technical Symposium, 1983, Los Angeles, United States
Abstract
In 1974 Simpson, et al. showed how a half-silvered Hindle sphere could be used, in conjunction with auxiliary null optics, to test convex paraboloidal and hyperboloidal surfaces. An extension of this concept has been made. A partially-reflective surface and a nearly aplanatic surface form a single-element, low-power null lens which can be used to test a particular ellipsoid or hyperboloid. Two embodiments of such a lens have been constructed to test convex ellipsoids. The singlet null lens is used in a Fizeau configuration. It provides superior correction to a more conventional null lens, is insensitive to misalignment, and is calibrated by test in a stand-alone mode.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
James W. Howard, James W. Howard, Maurice H. Beaulieu, Maurice H. Beaulieu, Robert J. Zielinski, Robert J. Zielinski, } "A Nonobscuring, Easily-Calibrated Method For Testing Ellipsoids And Hyperboloids On A Fizeau Interferometer", Proc. SPIE 0389, Optical Systems Engineering III, (3 October 1983); doi: 10.1117/12.935019; https://doi.org/10.1117/12.935019
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