DOE-based systems and devices for producing laser beams having modified beam characteristics
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United States of America Patent
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Oct 28, 2008
Grant Date -
Aug 2, 2007
app pub date -
Oct 12, 2006
filing date -
Apr 30, 1999
priority date (Note) -
Expired
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Abstract
Novel methods are disclosed for designing and constructing miniature optical systems and devices employing light diffractive optical elements (DOEs) for modifying the size and shape of laser beams produced from a commercial-grade laser diodes, over an extended range hitherto unachievable using conventional techniques. The systems and devices of the present invention have uses in a wide range of applications, including laser scanning, optical-based information storage, medical and analytical instrumentation, and the like. In the illustrative embodiments, various techniques are disclosed for implementing the DOEs as holographic optical elements (HOEs), computer-generated holograms (CGHs), as well as other diffractive optical elements.
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