Fluorescence based laser alignment and testing of complex beam delivery systems and lenses
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United States of America Patent
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Dec 11, 2007
Grant Date -
May 4, 2006
app pub date -
Oct 26, 2005
filing date -
Oct 29, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Aligning and testing alignment of optical elements in a laser beam delivery system using non-visible radiation. An alignment mirror replaces a beam redirection mirror and includes a fluorescing substrate and a dielectric coating on an incident face of the fluorescing substrate that reflects a major part of an incident laser beam along a next leg of the beam path and transmits a part of the beam into the fluorescing substrate, which is transmissive to visible radiation and fluoresces when irradiated by the beam to emit a visible light image from a back face of the alignment mirror. An alignment target on the back face indicates a preferred point of incidence of the beam on the alignment mirror for a desired alignment of the at least one laser beam. A lens may be tested and the properties of the lens determined by use of a fluorescing target plate.
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