Holographic ROM system
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United States of America Patent
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-
Sep 25, 2007
Grant Date -
Dec 2, 2004
app pub date -
May 19, 2004
filing date -
May 31, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A holographic ROM system of the present invention includes a lens unit for filtering and collimating an output radiation diffracted from a holographic disk in order to produce an output data beam. The lens unit includes an objective lens for collimating the output radiation and a filtering film for filtering the output radiation. The objective lens and the filtering film are formed in a single body.
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