Patent ID: 7307711

Claim:
A laser beam alignment mechanism for alignment of optical elements in a laser beam delivery system having a plurality of beam redirection mirrors for directing at least one laser beam along a beam path, comprising: at least one alignment mirror located in substitution for a corresponding one of the beam redirection mirrors, the alignment mirror including a fluorescing substrate, and a dielectric coating on an incident face of the fluorescing substrate, the fluorescing substrate is transmissive to visible radiation and fluoresces when irradiated by energy of the at least one laser beam, and the dielectric coating reflects a major part of the energy of an incident laser beam as a reflected laser beam along a next leg of the beam path, and transmits a lesser part of the energy of the incident laser beam into the fluorescing substrate, wherein the energy of the at least one laser beam transmitted into the fluorescing substrate results in an emission of a visible light image from a back face of the alignment mirror, the visible light image indicating a point of incidence of the at least one laser beam on the incident face of the alignment mirror.