Optical: systems and elements – Holographic system or element – Using modulated or plural reference beams
Reexamination Certificate
2007-10-05
2010-11-16
Allen, Stephone B (Department: 2872)
Optical: systems and elements
Holographic system or element
Using modulated or plural reference beams
C359S029000
Reexamination Certificate
active
07835048
ABSTRACT:
The present invention relates to a coaxial type apparatus for reading from and/or writing to holographic storage media with multiple reference beams. The invention further relates to a beam generator and a filter for use in such an apparatus. According to the invention, in an apparatus for reading from and/or writing to a holographic storage medium, with a coaxial arrangement of three or more focused reference beams and an object beam or a reconstructed object beam, the foci of the focused reference beams are arranged on a circle around the object beam in a Fourier plane of the apparatus. A beam generator generates the three or more reference beams from an incoming reference beam. A filter low-pass filters the object beam and rotates the polarization of the three or more reference beams.
REFERENCES:
patent: 5369511 (1994-11-01), Amos
patent: 6281993 (2001-08-01), Bernal et al.
patent: 6762865 (2004-07-01), Edwards
patent: 2003/0025955 (2003-02-01), Curtis
patent: 2003/0039001 (2003-02-01), King et al.
patent: 2004/0156297 (2004-08-01), Edwards
patent: 2005/0078592 (2005-04-01), Horimai et al.
patent: 2006/0082851 (2006-04-01), Toishi
patent: 2007/0153663 (2007-07-01), Fukumoto et al.
patent: 2009/0103152 (2009-04-01), Szarvas et al.
patent: 2009/0262405 (2009-10-01), Szarvas et al.
patent: 1 624 451 (2006-02-01), None
patent: WO 2005/066939 (2005-07-01), None
patent: WO 2006/003077 (2006-01-01), None
European Search Report dated May 8, 2007.
Banko Krisztian
Karpati Zoltan
Kautny Szabolcs
Szarvas Gabor
Allen Stephone B
Doak Jennifer L.
Opalach Joseph J.
Schaefer Jerome C.
Shedd Robert D.
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