G - Physics – 03 – H
Patent
G - Physics
03
H
88/0.14
G03H 1/04 (2006.01) G03H 1/02 (2006.01) G06E 3/00 (2006.01) H04Q 11/00 (2006.01)
Patent
CA 2020095
Abstract of the Disclosure The invention is directed to holographic apparatus having an interferometer for concurrently irradiating an image recording medium by a writing reference light composed of spherical or plane wave and a signal light containing image information to interfere with each other to record a hologram, and means for irradiating the hologram by a reading reference light in the opposite direction of the reference light to thereby reconstruct the image information. The image recording medium is comprised of a photoconductive layer, an optical reflective layer, a pair of liquid crystal alignment layers, a ferroelectric liquid crystal layer having bistable memory characteristic between its optical reflectivity and an applied voltage, means for applying the voltage and a pair of transparent substrates. Particularly, the interferometer is Mach-Zehnder type which includes within its signal light forming path an optical shutter, means for entering an image information and imagery optical system for optionally optical Fourier transforming the input image information and then enlarging the same form the image on an optical writing face of the light addressed liquid crystal light valve. By such construction, an extremely small holographic apparatus can be obtained so as to record and read the hologram in real time.
Iwaki Tadao
Mitsuoka Yasuyuki
Yamamoto Shuhei
Borden Ladner Gervais Llp
Seiko Instruments Inc.
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