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Proceedings Paper

Micro-optic lens for data storage
Author(s): Tomas D. Milster; Robert M. Trusty; Mark Shi Wang; Fred Franklin Froehlich; James Kevin Erwin
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Paper Abstract

We describe a new type of microlens for data storage applications that has improved off-axis performance. The lens consists of a micro-Fresnel pattern on a curved substrate. The radius of the substrate is equal to the focal length of the lens. If the pattern and substrate are thin, the combination satisfies the Abbe sine condition. Therefore, the lens is free of coma. We analyze a 0.5 numerical aperture, 0.50 mm focal length lens in detail. A 0.16 numerical aperture lens was fabricated holographically, and results are presented.

Paper Details

Date Published: 1 July 1991
PDF: 7 pages
Proc. SPIE 1499, Optical Data Storage '91, (1 July 1991); doi: 10.1117/12.45900
Show Author Affiliations
Tomas D. Milster, Optical Sciences Ctr./Univ. of Arizona (United States)
Robert M. Trusty, Optical Sciences Ctr./Univ. of Arizona (United States)
Mark Shi Wang, Optical Sciences Ctr./Univ. of Arizona (United States)
Fred Franklin Froehlich, Optical Sciences Ctr./Univ. of Arizona (United States)
James Kevin Erwin, Optical Sciences Ctr./Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 1499:
Optical Data Storage '91

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