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Proceedings Paper

Aplanatic cemented doublets achromatized with normal glasses in the visible spectrum
Author(s): Martha Rosete-Aguilar; Juan L. Rayces
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Paper Abstract

This paper presents a systematic study of aplanatic cemented doublets acromatized with normal glasses in the visible spectrum in order to answer some questions concerned with residual aberrations such as zonal spherical aberration, oblique spherical aberration, spherochromatism and secondary spectrum. Two of the questions concerned with these residual aberrations are: (1) is it possible to reduce even by a small amount any of these aberrations by selecting an appropriate pair of glasses, and (2) is there any advantage in having the crown in front of the flint when designing a doublet. To answer these questions a study is being carried out for a doublet with an aperture of 2.0 inches and a semi- field of view of 1 degrees. The doublets are designed for six f-numbers: f/5.6, f/4.0, f/2.8, f/2.6, f/1.8 and f/1.6 when the crown is in front of the flint. All solutions have the same thickness on axis for the flint and the same thickness on the edge for the crown. This analysis is also performed for a double having the flint in front of the crown. The results are presented and discussed.

Paper Details

Date Published: 27 August 1999
PDF: 8 pages
Proc. SPIE 3737, Design and Engineering of Optical Systems II, (27 August 1999); doi: 10.1117/12.360025
Show Author Affiliations
Martha Rosete-Aguilar, Univ. Nacional Autonoma de Mexico (Mexico)
Juan L. Rayces, J.L. Rayces Consulting, Inc. (United States)


Published in SPIE Proceedings Vol. 3737:
Design and Engineering of Optical Systems II
Fritz Merkle, Editor(s)

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