2 September 1992 Projection moire technique for contouring injection-molded parabolic reflectors
Author Affiliations +
Proceedings Volume 1779, Optical Design and Processing Technologies and Applications; (1992) https://doi.org/10.1117/12.140940
Event: Optical Engineering Midwest 1992, 1992, Chicago, IL, United States
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, Andrew H. Fagg, Bryan S. Hales, Bryan S. Hales, H. Philip Stahl, 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


Projection lens testing with Moiré effect
Proceedings of SPIE (March 27 2017)
Systematic errors of a projection-moire contouring system
Proceedings of SPIE (December 14 1992)
Aspheric surface testing techniques
Proceedings of SPIE (December 31 1990)

Back to Top