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13 January 1993 High-efficiency multiple-phase-level lenslet array
Guofan Jin, Yingbai Yan, Xu Wang, Zheng Li, Minxian Wu
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Proceedings Volume 1751, Miniature and Micro-Optics: Fabrication and System Applications II; (1993) https://doi.org/10.1117/12.138876
Event: San Diego '92, 1992, San Diego, CA, United States
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.
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Guofan Jin, Yingbai Yan, Xu Wang, Zheng Li, and Minxian Wu "High-efficiency multiple-phase-level lenslet array", Proc. SPIE 1751, Miniature and Micro-Optics: Fabrication and System Applications II, (13 January 1993); https://doi.org/10.1117/12.138876
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KEYWORDS
Diffraction
Computer aided design
Lens design
Image processing
Microlens array
Binary data
Micro optics
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