Hologram recording medium, hologram recording and...

Details Hologram recording medium, hologram recording and... Hologram recording medium, hologram recording and...

2007-10-02

2007-10-02

Lavarias, Arnel (Department: 2872)

Optical: systems and elements

Holographic system or element

Having particular recording medium

C359S035000, C369S272100, C369S275100

Reexamination Certificate

active

11088898

ABSTRACT:
A hologram recording medium is provided which can prevent sensitization of a region thereof other than a data recording region thereby to prevent deterioration of a characteristic of the hologram recording medium. The hologram recording medium includes partition members for partitioning a recording material. Upon recording, unnecessary light generated when signal light and reference light enter the recording material is blocked from propagating in the recording material by the partition members and cannot advance into adjacent partitions. Therefore, unnecessary sensitization of the recording material by the unnecessary light can be prevented, and particularly, decrease of the recording capacity can be prevented. Consequently, the performance of a hologram recording and reproduction apparatus which adopts, for example, a multiplex recording system can be exhibited fully.

REFERENCES:
patent: 5285438 (1994-02-01), Marchand et al.
patent: 5477347 (1995-12-01), Redfield et al.
patent: 6222651 (2001-04-01), Fujimoto
patent: 2002/0101629 (2002-08-01), Suganuma
patent: 2005/0174917 (2005-08-01), Matsumoto et al.

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