Laser diode collimating system
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United States of America Patent
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-
Mar 29, 2005
Grant Date -
Jul 31, 2003
app pub date -
May 24, 2002
filing date -
Jan 28, 2002
priority date (Note) -
Expired
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Abstract
A laser diode collimating system comprises a collimating lens for receiving a laser beam from a laser diode LD. First and second orthogonally arranged cylindrical lenses are provided through which the laser beam passes. The cylindrical lenses are positioned so as to have a substantially common focal plane and operate substantially independently on the divergence and/or convergence of the laser beam in its fast axis and slow axis directions respectively. A convex lens, through which the beam passes, has a focus lying in the said common focal plane.
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