Journal ArticleDOI
A large interferometer for the examination of aircraft camera windows
A.C. Marchant,M.J. Biggs +1 more
TLDR
In this article, a modified Fizeau interferoscope was developed for testing aircraft camera windows measuring up to 60 cm in diameter, where relatively cheap components were used for the large collimating lens and reference flats, and a small holographic optical element corrected the residual errors of form.Abstract:
This paper describes a modified Fizeau interferoscope which has been developed for testing aircraft camera windows measuring up to 60 cm in diameter. Relatively cheap components are used for the large collimating lens and reference flats, and a small holographic optical element corrects for the residual errors of form.read more
Citations
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Journal Article
Using computer generated holograms to test aspheric wavefronts
James C. Wyant,V. P. Bennett +1 more
TL;DR: In this article, the use of computer generated holograms for the testing of aspheric wavefronts is described, and an analysis of the errors produced by emulsion movement, incorrect hologram size and position, and distortion in hologram plotter and photoreduction lens is given, and it is shown that all the errors are proportional to the slope of the wavefront.
Patent
Optical examination apparatus particularly useful as a Fizeau interferometer and schlieren device
Oded Kafri,Kathi Kreske +1 more
TL;DR: In this article, a basic setup comprising a point source of light, a first optical system forming a converging beam of light reflected from the examined object, and a second optical system located to receive the intercepted beam of reflected light, to collimate it, and to direct the collimated beam to a viewing device is described.
Journal ArticleDOI
Simple method for improving fringe contrast when testing mirror surfaces in the Fizeau interferoscope
TL;DR: In this article, the low contrast of fringes used to examine aluminized optical flats is considered and an inexpensive and simple solution is suggested, which is used to solve the problem.
References
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Journal ArticleDOI
Using Computer Generated Holograms to Test Aspheric Wavefronts
James C. Wyant,V. P. Bennett +1 more
TL;DR: An analysis of the errors produced by emulsion movement, incorrect hologram size and position, and distortion in hologram plotter and photoreduction lens is given, and it is shown that all the errors are proportional to the slope of the aspheric wavefront.
Journal ArticleDOI
Note on the Testing of Large Glass Panels
A. Ashton,A.C. Marchant +1 more
TL;DR: In this paper, the authors discuss the testing of large glass panels and their effect on the performance of large-scale testbeds, and propose a method for testing large glass panels.