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Proceedings Paper

Optimization of precision aspheric lenses for advanced small sensor heads of large numerical aperture
Author(s): Zhanping Xu; Bernhard O. Bundschuh; Rudolf Schwarte; Otmar Loffeld; Ferdinand Klaus; Horst-Guenther Heinol
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Paper Abstract

This paper introduces an optimization method of precision aspheric lenses for advanced small sensor heads of large numerical aperture. The approach is different from the numerical method adopted in commercial software packages. Analytically optimized results of an aspheric lens of large numerical aperture are obtained from solving differential equations strictly bounded by the condition of minimum angle of divergence and without spherical aberration. It is concluded that the optimized lens of a certain type, with minimum power losses and minimum angle of divergence, uniquely depends on the refractive index of the plastic or glass material. Criteria of manufacturing aspheric lenses in different types according to the indexes are given in the paper as well. Considering the difficulty of fabricating a lens module with two aspheric surfaces, a simplified ideal form of an aspheric lens is also proposed in this paper. Obviously, the optimized results allow more tolerances especially in manufacturing integrated plastic optics with an electrooptic device. It is proved to be useful as a tool in precision optical design software packages.

Paper Details

Date Published: 1 December 1995
PDF: 8 pages
Proc. SPIE 2600, Design, Fabrication, and Applications of Precision Plastic Optics, (1 December 1995); doi: 10.1117/12.227921
Show Author Affiliations
Zhanping Xu, Univ. Siegen (Germany)
Bernhard O. Bundschuh, Univ. Siegen (Germany)
Rudolf Schwarte, Univ. Siegen (Germany)
Otmar Loffeld, Univ. Siegen (Germany)
Ferdinand Klaus, Univ. Siegen (Germany)
Horst-Guenther Heinol, Univ. Siegen (Germany)

Published in SPIE Proceedings Vol. 2600:
Design, Fabrication, and Applications of Precision Plastic Optics
Alex Ning; Raymond T. Hebert, Editor(s)

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