Sandwich holographic disk construction with thin molded...

Optical: systems and elements – Holographic system or element – Having particular recording medium

Reexamination Certificate

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C359S022000, C359S001000, C430S001000

Reexamination Certificate

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06850345

ABSTRACT:
In one embodiment, holographic data storage medium includes a first thermoplastic substrate portion having a thickness less than approximately 2 millimeters and a second thermoplastic substrate portion having a thickness less than approximately 2 millimeters. A holographic recording material may be sandwiched between the first and second thermoplastic substrate portions. By making thermoplastic substrate portions sufficiently thin, edge wedge problems can be avoided.

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