Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2006-09-27
2009-10-20
Agustin, Peter Vincent (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
Reexamination Certificate
active
07606133
ABSTRACT:
A hologram recording/reproducing device records information onto a medium by a light beam emitted from a laser light source and passing through a forward path, the forward path having optical components in an area extending from the laser light source to the medium, and reproduces the recorded information by the light beam passing through a backward path, the backward path having optical components in an area extending from the medium to an array light detector. The device includes a spatial-light modulator and a first objective lens disposed in the forward path, and a second objective lens and a polarization-dependent diffraction element disposed in the backward path. The modulator generates signal light and reference light from the light beam emitted from the laser light source, the signal light and the reference light being spatially divided from each other and having a common light path. The first objective lens focuses the signal light and the reference light from the modulator onto the medium. The second objective lens forms a hologram image on the light detector based on reproduction light from the medium. The diffraction element is disposed in a hologram real-image plane and diffracts the reference light incident upon the light detector from the second objective lens.
REFERENCES:
patent: 4993789 (1991-02-01), Biles et al.
patent: 6108110 (2000-08-01), Orlov et al.
patent: 6452890 (2002-09-01), Kawano et al.
patent: 7023786 (2006-04-01), Itoh et al.
patent: 2003/0035161 (2003-02-01), Anderson
Holographic Media Coming Soon, Achievement of 200G Bits in 2006, Nikkei Electronics, pp. 106-114, Jan. 17, 2005.
Fukumoto Atsushi
Ishioka Koji
Tanaka Kenji
Agustin Peter Vincent
Lerner David Littenberg Krumholz & Mentlik LLP
Sony Corporation
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