2 September 1992 Projection moire technique for contouring injection-molded parabolic reflectors
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Proceedings Volume 1779, Optical Design and Processing Technologies and Applications; (1992); doi: 10.1117/12.140940
Event: Optical Engineering Midwest 1992, 1992, Chicago, IL, United States
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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrew H. Fagg, Bryan S. Hales, H. Philip Stahl, "Projection moire technique for contouring injection-molded parabolic reflectors", Proc. SPIE 1779, Optical Design and Processing Technologies and Applications, (2 September 1992); doi: 10.1117/12.140940; https://doi.org/10.1117/12.140940
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KEYWORDS
Moire patterns

Reflectors

Monochromatic aberrations

Fringe analysis

Interferometry

Interferometers

Aspheric lenses

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