Open AccessSeidel aberration coefficients: an alternative computational method
Author(s) -
Psang Dain Lin,
R. Barry Johnson
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.019712
Subject(s) - optics , spherical aberration , taylor series , contrast transfer function , skew , lens (geology) , optical aberration , physics , coma (optics) , wavefront , radius , magnification , geometrical optics , mathematics , mathematical analysis , computer science , computer security , astronomy
An alternative method to compute Seidel aberrations is presented that utilizes real pseudoparaxial skew rays traveling through a rotationally-symmetric lens system as a Taylor series expansion in terms of object height and ray-direction spherical coordinates. Expressions for defocus, lateral magnification, and Seidel primary ray aberration coefficients are obtained in terms of numerically-determined higher-order partial derivatives of rays which are proximate to the optical axis. In contrast to commonly used methods, the new form of the aberration coefficients is related to unit entrance pupil radius and unit object height. The proposed methodology can be extended to derive higher-order ray aberration coefficients.