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Proceedings Paper

Influence of aspherical surfaces description on aberration correction
Author(s): Galina Romanova; Tatiana Ivanova; Tatiana Zhukova; Aleksei Garshin; Ruslan Dantcaranov
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Paper Abstract

Aspherical surfaces are widely used in optical systems of various applications. Optical design tools (Zemax, CODE-V and others) offers various types of aspherical surfaces equations to be used in designs, but it is always a question how properly choose what coefficients and what number of coefficients should be used. It can be shown that usage special type of aspherical equation where the profile is described by dependence of the quadratic height from the z-sag. Each coefficient in this equation affects the only one aberration order. Unfortunately, such type of equation is rather rarely used in optical design tools. Special procedure can be developed for approximation of this equation to the common equation. The routine calculates aspherical coefficients for the most widely used type of an even asphere equation and finds a standard deviation of the initial surface from the approximated. Thus user can decide to use more coefficients or keep the number. The presented routine helps to find the coefficients in aspherical equation that responsible for the each aberration order and helps to find out the optimal number of aspherical coefficients for correction during optimization. Examples of aberration correction using different types of aspherical surfaces equations are presented in the paper.

Paper Details

Date Published: 23 September 2015
PDF: 7 pages
Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96262T (23 September 2015); doi: 10.1117/12.2191117
Show Author Affiliations
Galina Romanova, ITMO Univ. (Russian Federation)
Tatiana Ivanova, ITMO Univ. (Russian Federation)
Tatiana Zhukova, ITMO Univ. (Russian Federation)
Aleksei Garshin, ITMO Univ. (Russian Federation)
Ruslan Dantcaranov, ITMO Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 9626:
Optical Systems Design 2015: Optical Design and Engineering VI
Laurent Mazuray; Rolf Wartmann; Andrew P. Wood, Editor(s)

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