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Proceedings Paper

Medium precision optical testing of a fast concave elliptical mirror by a cylindrical null screen
Author(s): R. Díaz-Uribe; R. Bolado-Gómez; M. Campos-García; M. Avendaño-Alejo
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Paper Abstract

We extend the principles of the null screen method for testing a fast ellipsoidal concave mirror by designing a null cylindrical screen, located around the near focal point of the ellipsoid (being parallel to the optical axis) and the observing CCD camera is near the far focal point. We present the formulae to design the screen in such a way that the image on the CCD is a perfect square grid; the departures of the surface from a perfect ellipsoidal shape are observed as deformations of the grid in the image. We show qualitative experimental results.

Paper Details

Date Published: 1 February 2006
PDF: 6 pages
Proc. SPIE 6034, ICO20: Optical Design and Fabrication, 60340Y (1 February 2006); doi: 10.1117/12.668118
Show Author Affiliations
R. Díaz-Uribe, Univ. Nacional Autónoma de México (Mexico)
R. Bolado-Gómez, Univ. Nacional Autónoma de México (Mexico)
M. Campos-García, Univ. Nacional Autónoma de México (Mexico)
M. Avendaño-Alejo, Univ. Nacional Autónoma de México (Mexico)

Published in SPIE Proceedings Vol. 6034:
ICO20: Optical Design and Fabrication
James Breckinridge; Yongtian Wang, Editor(s)

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