Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-08-02
2011-08-02
Klimowicz, William J (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C365S125000, C365S126000, C359S001000
Reexamination Certificate
active
07990830
ABSTRACT:
In holographic recording, it is important to form stably an interference fringe between a reference beam and a signal beam in a holographic storage medium. To suppress factors degrading stability of the interference fringe, such as fluctuation of atmospheric air, position displacement of optical components and the like during propagation of the reference and signal beams, an optical pickup and an optical information recording/reproducing apparatus adopt an optical system structure providing a higher proportion of optical components shared by the reference and signal beams optical path than conventional optical system structure. To increase the proportion of shared optical components, the signal beam and the reference beam pass through the PBS prism as parallel beams and a concave lens is placed on a reference beam path just before the objective lens.
REFERENCES:
patent: 2004/0179251 (2004-09-01), Anderson et al.
patent: 2004-272268 (2004-09-01), None
“InPhase Technologies Invention Disclosure”, Doc. 86-1206-1, Jan. 2006.
U.S. Appl. No. 60/905,837, filed Mar. 9, 2007, Ide et al.
Ian Redmond : “Beam Delivery in Monocular Holographic Data Storage System”, Technical Digest ODS (2006), MA1.
The InPhase Professional Archive Drive OMA: Design and Function, Redmond et al, Technical Digest ODS (2006) MA1.
Anderson Ken E.
Curtis Kevin R.
Ide Tatsuro
Shimada Ken'ichi
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
InPhase Technologies Inc.
Klimowicz William J
Sasinowski Andrew J
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