VARIO-ASTIGMATIC BEAM EXPANDER
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United States of America Patent
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Issued Date -
Dec 4, 2008
app pub date -
Jun 1, 2007
filing date -
Jun 1, 2007
priority date (Note) -
Abandoned
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Abstract
A vario-astigmatic beam expander is capable of collimating an astigmatic light beam, or inducing astigmatism in a well-collimated beam, by passing the light beam through a combination of spherical and cylindrical lenses, whereby both the degree of astigmatism and the axis of astigmatism induced are continuously adjustable. The beam expander has applications in industrial laser processing systems.
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