4 April 1979 A New Instrument For Routine Optical Testing Of General Aspherics
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Proceedings Volume 0171, Optical Components: Manufacture and Evaluation; (1979) https://doi.org/10.1117/12.957050
Event: Los Angeles Technical Symposium, 1979, Los Angeles, United States
Abstract
A unique and versatile laser interferometer has been jointly developed by Honeywell, Tropel and the University of Arizona. The system is designed for routine non-contact testing of aspheric optical surfaces (using a Computer-Generated Hologram [CGH] to provide the aspheric component of the reference wavefront) while retaining the features and capabilities of the standard Tropel Vertical Interferometer. Thus it is capable of measuring radius and/or optical figure of spheres, flats, conics and general aspherics. The instrument provides convenient interchangeability among Fizeau, Twyman-Green, CGH and Lateral Shearing modes of operation in a single compact unit. It is also capable of direct inter-facing with a computer for wavefront measurement or analysis. The operation of the system is described and data is presented from a CGH test of an f/2 paraboloid (using a spherical test wavefront) for which independent comparative data is also given.
© (1979) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peter M. Emmet, Peter M. Emmet, Kang M. Leung, Kang M. Leung, } "A New Instrument For Routine Optical Testing Of General Aspherics", Proc. SPIE 0171, Optical Components: Manufacture and Evaluation, (4 April 1979); doi: 10.1117/12.957050; https://doi.org/10.1117/12.957050
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