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Variable-Focus Liquid Crystal Lenses Used in Imaging Systems as Focusing Elements
Mao YE Bin WANG Satoshi YANASE Susumu SATO
IEICE TRANSACTIONS on Electronics
Publication Date: 2008/10/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on Electronic Displays)
liquid crystal lens, imaging, focusing, relay lens scope, TV lens,
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Liquid crystal (LC) lenses that have hole-patterned electrodes and are driven by two voltages used as imaging devices are reported. Two different LC lenses are applied in image formation systems. One LC lens is used with a polarizer in a relay lens scope, and another LC lens that is polarization independent is used in a TV lens. Both LC lenses play roles of focusing elements in lens systems; objects are separately brought into focus by the LC lenses. Very sharp black-and-white and color images are formed by the systems.