Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-08-30
2011-08-30
Amari, Alessandro (Department: 2872)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C359S022000
Reexamination Certificate
active
08009542
ABSTRACT:
A holographic information recording and/or reproducing apparatus includes: a light source to emit light; a polarization conversion device to form a polarized signal beam and an orthogonal polarized reference beam; an optical path forming optical system to separate the optical paths of the signal beam and the reference beam; a focus adjustment optical system disposed on the optical path of at least one of the signal beam and the reference beam, and to vary a position of a focus of at least one of the signal beam and the reference beam in a depth direction of the holographic information storage medium; an objective lens to focus the signal beam and the reference beam in the holographic information storage medium, and form an interference pattern to record information; and a 4frelay system disposed on an optical path between the focus adjustment optical system and the objective lens.
REFERENCES:
patent: 2005/0270609 (2005-12-01), Chuang et al.
patent: 2007/0211321 (2007-09-01), Hoskins et al.
patent: 2008/0100890 (2008-05-01), Curtis et al.
patent: P2007-149251 (2007-06-01), None
patent: P2007-149252 (2007-06-01), None
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International Search Report dated Jul. 29, 2009 in PCT International Application No. PCT/KR2009/000079.
Bae Jae-cheol
Jeong Taek-seong
Amari Alessandro
NSIP Law
Samsung Electronics Co,. Ltd.
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