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Proceedings Paper

High-efficiency multiple phase level lenslet array
Author(s): Guofan Jin; Yingbai Yan; Xu Wang; Zheng Li; Minxian Wu
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Paper Abstract

For enhancing the light efficiency of lenslet array, the technique of binary optics has been used. Most binary lenslet array are designed of an array of Fresnel zone plate. A zone plate has simultaneously convergent focal points as well as divergent foci, so the intensity on either side is reduced. We have designed a lens array which combines the real focus with virtue focus, thus the intensity obtained is much higher than in a conventional array. In fabrication, four phase levels and eight phase levels have been used, high efficiency is thus obtained. Twelve X twelve, 16 X 16 equal intensity arrays have been produced. Testing of the phase structure and other parameters also are introduced.

Paper Details

Date Published: 13 January 1993
PDF: 4 pages
Proc. SPIE 1751, Miniature and Micro-Optics: Fabrication and System Applications II, (13 January 1993); doi: 10.1117/12.138876
Show Author Affiliations
Guofan Jin, Tsinghua Univ. (China)
Yingbai Yan, Tsinghua Univ. (China)
Xu Wang, Tsinghua Univ. (China)
Zheng Li, Tsinghua Univ. (China)
Minxian Wu, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 1751:
Miniature and Micro-Optics: Fabrication and System Applications II
Chandrasekhar Roychoudhuri; Wilfrid B. Veldkamp, Editor(s)

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