Hologram recording medium, recording/reproducing method and...

Details Hologram recording medium, recording/reproducing method and... Hologram recording medium, recording/reproducing method and...

2007-12-11

2007-12-11

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Holographic system or element

For producing or reconstructing images from multiple holograms

C359S025000, C369S279000

Reexamination Certificate

active

11046799

ABSTRACT:
A hologram recording medium is for recording or reproducing information with light irradiated thereto. The medium has a recording layer made of a photo-sensitive material, a reflective layer disposed on the opposite side of the recording layer from a light irradiated side, tracks formed on the reflective layer such that the tracks are spaced apart by a first pitch from each other to extend without intersection, and positioning marks formed on the reflective layer such that the positioning marks are spaced apart by a second pitch from each other in a direction in which the tracks extend. The second pitch is a function of the first pitch.

REFERENCES:
patent: 5671073 (1997-09-01), Psaltis et al.
patent: 2002-40908 (2002-02-01), None
patent: 2003-85768 (2003-03-01), None
D. Psaltis et al., “Holographic storage using shift multiplexing,”Optics Letters, vol. 20, No. 7, Apr. 1, 1995, pp. 782-784.

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