Correction of angular deviation and radial drift of laser beams
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United States of America Patent
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Feb 8, 2005
Grant Date -
Oct 14, 2004
app pub date -
Apr 10, 2003
filing date -
Apr 10, 2003
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Abstract
A laser correction element for the correction of angular deviation due to pointing instability and radial displacement due to thermal drift, including one or more of an angular deviation non-symmetric optical element for redirecting a beam axis of a laser beam through a first corrective angle dependent upon the angle of incidence of the laser beam on the angular deviation element to be parallel with an optimum centerline and a radial displacement non-symmetric optical element for redirecting a beam axis of a laser beam through a second corrective angle dependent upon a radial displacement of the beam axis. A collimating non-symmetric optical element may redirect the laser beam through a third corrective angle dependent on radial displacement of the beam axis from a centerline and angle of incidence on the collimating element.
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