Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1988-09-15
1991-05-07
Arnold, Bruce Y.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
350395, 35016211, 369103, 369109, G02B 532, G02B 2728, G02B 2742
Patent
active
050131079
ABSTRACT:
A polarization-selective holographic element having first and second holographic layers, each holographic layer including holograms comprising a plurality of fringes. The holographic optical element transmits a first component of light without diffraction and diffracts a second component of the light by a selected angle. The holographic optical element diffracts the second component into only one beam. The holographic optical element can be utilized as a beam splitter which is provided with optical power, for use in an optical head, by storing holograms for cylindrical and other powers and for auto-focusing and tracking capabilities.
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Arnold Bruce Y.
Lerner Martin
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