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Proceedings Paper

Projection moire technique for contouring injection-molded parabolic reflectors
Author(s): Andrew H. Fagg; Bryan S. Hales; H. Philip Stahl
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Paper Abstract

Testing injection molded aspheres, with large deviations from spherical is difficult. One solution is to use a long wavelength interferometer, such as an infrared interferometer. Another solution is to use moire. This paper presents the use of a projection moire system to test the surface shape of an injection molded f/0.1 parabolic reflector. The theory of moire and its effective wavelength is presented. A projection system is constructed and data taken for a reflector is shown. Finally, some alignment errors associated with the system and how to correct them is presented.

Paper Details

Date Published: 2 September 1992
PDF: 5 pages
Proc. SPIE 1779, Optical Design and Processing Technologies and Applications, (2 September 1992); doi: 10.1117/12.140940
Show Author Affiliations
Andrew H. Fagg, Rose-Hulman Institute of Technology (United States)
Bryan S. Hales, Rose-Hulman Institute of Technology (United States)
H. Philip Stahl, Rose-Hulman Institute of Technology (United States)


Published in SPIE Proceedings Vol. 1779:
Optical Design and Processing Technologies and Applications

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