Endoscopic imaging system employing diffractive optical elements
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United States of America Patent
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Nov 9, 1999
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N/A
app pub date -
Dec 1, 1997
filing date -
Dec 1, 1997
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Abstract
An improved endoscope comprises an objective including a diffractive optical element juxtaposed to a solid-state imaging element at the distal tip of the endoscope. An inexpensive halogen lamp at the proximal end of the endoscope is employed as the illumination source. A fiber-optic bundle carries light to the distal tip of the endoscope, where diffractive optical elements are provided to disperse light, illuminating the field of view.
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