Method and apparatus for laser beam homogenization
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United States of America Patent
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-
Dec 27, 1988
Grant Date -
N/A
app pub date -
Apr 23, 1986
filing date -
Apr 23, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A light beam with non-uniform cross-sectional intensity profile is positioned into a central portion and two side lobes and the two side lobes are folded over the central portion to form a concentrated beam at a focus plane having substantially uniform intensity profile. The partitioning and folding may be done by mirror pairs disposed along the axis of the beam, or a trapezoidal prism.
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