Holographic recording apparatus, holographic reproducing...

Details Holographic recording apparatus, holographic reproducing... Holographic recording apparatus, holographic reproducing...

2008-03-14

2010-11-23

Hindi, Nabil Z (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

Reexamination Certificate

active

07839750

ABSTRACT:
A holographic recording apparatus causes reference light and information light to interfere with each other, and records the interference pattern in a recording medium. The holographic recording apparatus has an objective lens and a focus position controller. The objective lens focuses both the reference light and the information light at a focus position of the recording medium. The focus position controller changes the focus position into a predetermined position on the light path of the reference light.

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patent: 7554893 (2009-06-01), Kanaoka et al.
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patent: 2004/0179251 (2004-09-01), Anderson
patent: 2004-272268 (2004-09-01), None
patent: 2004-335044 (2004-11-01), None

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