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Proceedings Paper

Improved optimization method for designing a doublet lens
Author(s): Wen-Shing Sun; Hong Chang; Ching-Cherng Sun; Ming-Wen Chang; Chuen-Lin Tien
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Paper Abstract

We presented an efficient method to achieve the optimized design of a doublet lens. Using the third-order aberrations to obtain directly a minimal area from the ray-fan diagram was suggested. We took the specification of F/#=3.333 and a half field of view 1 degree(s) as the design example. The optimization technique was utilized to control the third order aberrations such as spherical aberration and coma, and used the third-order spherical and coma aberrations to correct directly the on-axis aberrations. In order to minimize increasing the tendency of the off-axis aberration at the 1.0 field angle, during the correction of the on-axis aberration a small value, then had a tendency to increase. Our solution is taking the RMS value of spot diagram less than the diffraction limited value of point spread function (PSF) as an evaluated criterion for the on-axis aberrations. Finally, the optimized value of the system design is obtained by adjusting lens thickness and lens spacing. Two design examples of the doublet, one glass lens and one plastic lens, are well presented in this article.

Paper Details

Date Published: 10 December 2001
PDF: 11 pages
Proc. SPIE 4442, Novel Optical Systems Design and Optimization IV, (10 December 2001); doi: 10.1117/12.449968
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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