Ring-shaped prism of a holographic ROM system

Details Ring-shaped prism of a holographic ROM system Ring-shaped prism of a holographic ROM system

2005-12-06

2005-12-06

Yoha, Connie C. (Department: 2827)

Static information storage and retrieval

Information masking

Diffraction

C365S010000, C365S011000, C369S103000, C369S112280

Reexamination Certificate

active

06972982

ABSTRACT:
A holographic system for storing data on an interference pattern in a hologram storage medium includes a light source for emitting a laser beam, a beam splitter, modulating means and a refractive material. The beam splitter divides the laser beam into a reference beam and a signal beam and the modulating means modulates the signal beam to generate a modulated signal beam. The refractive material refracts the reference beam to generate a refracted reference beam, wherein the refracted reference beam interferes with the modulated signal beam in the hologram storage medium to generate the interference pattern.

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patent: 5322747 (1994-06-01), Hugle
patent: 6418106 (2002-07-01), Stoll
patent: 2003/0161246 (2003-08-01), Chuang
patent: 2004/0218239 (2004-11-01), Roh
patent: 0271300 (1988-06-01), None
patent: XP-002318686 (2003-02-01), None

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