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Proceedings Paper

Design of a Cooke triplet by optimization technique
Author(s): Wen-Shing Sun; Hong Chang; Ching-Cherng Sun; Ming-Wen Chang; Chuen-Lin Tien
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Paper Abstract

A simple and direct method using these equations to correct real aberrations and to find the minimum aberration of the system has been suggested. The calculated third-order aberration can exactly meet the target values at each stage by means of the damped least-squares method. The spherical aberration is first targeted to get the minimal value of an on-axis aberration corresponding to the real aberration. Similarly, the coma and astigmatism target values are adjusted to force off-axis real aberrations at the 1.0 field angle down to the minimum. Finally, the minimum aberration at the field angle of 0.7 is fulfilled by the manual variation of the lens thickness and lens spacing. Two examples of triplet designs are presented.

Paper Details

Date Published: 10 December 2001
PDF: 11 pages
Proc. SPIE 4442, Novel Optical Systems Design and Optimization IV, (10 December 2001); doi: 10.1117/12.449967
Show Author Affiliations
Wen-Shing Sun, National Central Univ. (Taiwan)
Hong Chang, Chung Shan Institute of Science and Technology (Taiwan)
Ching-Cherng Sun, National Central Univ. (Taiwan)
Ming-Wen Chang, Yuan Ze Univ. (Taiwan)
Chuen-Lin Tien, Chung Shan Institute of Science and Technology (Taiwan)

Published in SPIE Proceedings Vol. 4442:
Novel Optical Systems Design and Optimization IV
Jose M. Sasian; Paul K. Manhart, Editor(s)

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