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Proceedings Paper

A Nonobscuring, Easily-Calibrated Method For Testing Ellipsoids And Hyperboloids On A Fizeau Interferometer
Author(s): James W. Howard; Maurice H. Beaulieu; Robert J. Zielinski
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Paper 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.

Paper Details

Date Published: 3 October 1983
PDF: 6 pages
Proc. SPIE 0389, Optical Systems Engineering III, (3 October 1983); doi: 10.1117/12.935019
Show Author Affiliations
James W. Howard, Honeywell Electro-Optics Division (United States)
Maurice H. Beaulieu, Honeywell Electro-Optics Division (United States)
Robert J. Zielinski, Honeywell Electro-Optics Division (United States)

Published in SPIE Proceedings Vol. 0389:
Optical Systems Engineering III
William H. Taylor, Editor(s)

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