Frequency Control of Despeckling
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United States of America Patent
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app pub date -
Sep 25, 2012
filing date -
Dec 7, 2010
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Abandoned
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Abstract
A method and apparatus that reduces laser speckle by using stimulated Raman scattering in an optical fiber. The pulse repetition frequency of the laser is adjusted to control aspects of the laser light such as color or despeckling. In DLP projection systems, an optical monitor may be used to send information to a bit sequence, and the bit sequence may control the pulse repetition frequency of the laser based on the optical monitor signal.
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