Patent Number: 6,166,835

Title: Holographic memory

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.

Inventors: Yang; Keun-Young (Kyonggi-do, KR)

Assignee: LG Electronics Inc.

International Classification: G11B 7/0065 (20060101); G11C 13/04 (20060101); G11B 7/00 (20060101); G11B 7/125 (20060101); G11B 7/085 (20060101); G11B 7/135 (20060101); G03H 001/26 (); G03H 001/30 (); G03H 001/10 (); G02B 005/32 (); G11C 013/04 ()

Expiration Date: 12/26/2017