Hologram recorder and hologram recording method

Details Hologram recorder and hologram recording method Hologram recorder and hologram recording method

2008-03-28

2010-12-28

Lamb, Christopher R (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112190

Reexamination Certificate

active

07859975

ABSTRACT:
A hologram recorder includes a light source for emitting a laser beam, a polarizing beam splitter for splitting the laser beam into a recording beam and a reference beam in accordance with a state of polarization, and a rotary polarizer located between the light source and the polarizing beam splitter. The rotary polarizer has the function of optical rotation, whereby a polarization component to be the recording beam is increased from the central portion toward the peripheral portion of the laser beam, and a polarization component to be the reference beam is decreased from the central portion toward the peripheral portion of the laser beam.

REFERENCES:
patent: 2003/0002424 (2003-01-01), Temple
patent: 2007/0121468 (2007-05-01), Koyama et al.
patent: A 2005-302203 (2005-10-01), None
patent: A 2006-39134 (2006-02-01), None
patent: A 2006-145676 (2006-06-01), None

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