Aspherical mirror testing with an area detector array

Details Aspherical mirror testing with an area detector array Aspherical mirror testing with an area detector array

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apopt..26.1998o&link_type=abstract

Applied Optics (ISSN 0003-6935), vol. 26, May 15, 1987, p. 1998-2004.

Computer Science

Graphics

1

Asphericity, Laser Applications, Mirrors, Surface Properties, Computer Graphics, Instrument Errors, Phase Detectors, Tests, Wave Fronts

Scientific paper

A deep aspherical surface testing method using an interferometer and an area array sensor is presented. The method is based on a fringe-scanning phase-detecting method. The method has high accuracy and does not require an aspherical reference surface, a null lens, or a hologram. After calculating the object-wavefront phase, a computer displays the sag difference map between a measured surface and an ideal aspherical surface. Results for testing an f/3 200-mm diam. parabolic mirror are presented.

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