NON-FT PLANE ANGULAR FILTERS
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United States of America Patent
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Issued Date -
Oct 2, 2008
app pub date -
Oct 15, 2007
filing date -
Apr 2, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Non-Fourier Transform (FT) plane angular filters and their use in holographic storage systems or devices for angular filtering of a data beam prior to recording holographic data or for angular filtering of a recovered beam prior to detecting the recovered holographic data. The non-FT plane filters may be a macrotube array, an etalon, a multi-layer thin film interference coating on a curved surface, a lenslet array device, a waveguide-like array, or a combination thereof. Also provided are methods for carrying out angular filtering using such filters for data storage and/or data recovery.
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