Optical: systems and elements – Holographic system or element – For producing or reconstructing images from multiple holograms
Patent
1999-05-27
2000-12-26
Chang, Audrey
Optical: systems and elements
Holographic system or element
For producing or reconstructing images from multiple holograms
359 10, 359 25, 359 15, 359 1, 365124, 365125, G03H 126, G03H 130, G03H 110, G02B 532, G11C 1304
Patent
active
061668354
ABSTRACT:
Holographic memory including a beam source for emitting a beam, a beam splitter for splitting the beam into a reference beam and an object beam, a hologram memory unit for recording information designated to a cell when the reference beam and the object beam are incident thereto at a time, and reproducing the information recorded before when only the reference beam is incident thereto, a first optical path changing unit for directing the reference beam to be incident to the hologram memory unit at an arbitrary angle for recording and reproduction of the information, including a first deflector for deflecting the reference beam to an arbitrary angle, a second deflector for re-deflecting the reference beam deflected at the first deflector in a vertical direction, and a telescope having at least one composite HOE(Holographic Optical Element) for directing the reference beam re-deflected at the second deflector to be incident to the hologram memory unit, and a second optical path changing unit for adjusting an optical path of the object beam to be incident to the hologram memory unit for recording the information, whereby increasing a recording capacity and improving productivity and cost.
REFERENCES:
patent: 5550779 (1996-08-01), Burr et al.
patent: 5946115 (1999-08-01), Noh
Chang Audrey
LG Electronics Inc.
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