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Optical Engineering

Astigmatic optical surfaces, characteristics, testing, and differences between them
Author(s): Zacarías Malacara; Daniel Malacara-Doblado; Daniel Malacara-Hernandez; J. E. A. Landgrave
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Paper Abstract

An astigmatic optical surface has two different orthogonal curvatures. There are a great number of them, but only a few are in common use in optical instruments. These are similar in shape but have some important differences to be considered. These differences must be taken into account during the design, fabrication, and testing of optical systems that includes such surfaces. A comparative description of some surfaces is made with some of its characteristics reviewed. Finally, an analysis of their properties and testing possibilities is made. An important conclusion of this analysis is that the two main surfaces, the toroidal and the spherocylindrical surfaces, may differ in their shape by an ashtray component (an x2y2 term) as large as several wavelengths.

Paper Details

Date Published: 1 December 2007
PDF: 5 pages
Opt. Eng. 46(12) 123001 doi: 10.1117/1.2818211
Published in: Optical Engineering Volume 46, Issue 12
Show Author Affiliations
Zacarías Malacara, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Daniel Malacara-Doblado, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Daniel Malacara-Hernandez, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
J. E. A. Landgrave, Ctr. de Investigaciones en Óptica, A.C. (Mexico)

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