Method and apparatus for determining characteristics of a laser beam spot
AssigneeAdvanced Medical Optics, Inc.
InventorsKingman Yee, Terrance N. Clapham
Life of this patent
Estimating the term…
Abstract
A method of determining the dimensions of a laser beam spot, comprising: scanning the laser beam in a path across a reference-edge having a photodetector positioned therebehind; and measuring an output signal from the photodetector during the scanning, the output signal corresponding to an area of the laser beam spot incident on the photodetector during the scanning. A method of aligning a laser beam delivery system, the method comprising: positioning a measurement/alignment tool at a target location; firing the laser beam on the tool; observing the laser beam using the tool; and adjusting the system in response to the sensed laser beam.
Claims25
A method of calibrating a scanning laser beam delivery system, the method comprising:
- positioning a calibration tool at a target location;
- directing a laser beam onto the tool with the scanning beam delivery system;
- sensing the laser beam using the tool;
- adjusting the scanning beam delivery system in response to the sensed laser beam;
- and
- directing the laser beam toward a patient's cornea and sculpting the cornea with the adjusted system.
A method of calibrating a scanning laser beam delivery system, the method comprising:
- positioning a calibration tool at a target location;
- directing a laser beam onto the tool with the scanning beam delivery system;
- sensing the laser beam using the tool;
- adjusting the scanning beam delivery system in response to the sensed laser beam;
- and
- removing the tool and sculpting the cornea with the adjusted system.
A method of calibrating a scanning laser beam delivery system, the method comprising:
- positioning a calibration tool at a target location;
- directing a laser beam onto the tool with the scanning beam delivery system by scanning the laser beam in a path across a reference-edge and onto a photodetector;
- sensing the laser beam using the tool;
- and
- adjusting the scanning beam delivery system in response to the sensed laser beam.
A method of calibrating a scanning laser beam delivery system, the method comprising:
- positioning a calibration tool at a target location;
- directing a laser beam onto the tool with the scanning beam delivery system by scanning the laser beam across a target which fluoresces in response to the laser beam being incident thereon;
- sensing the laser beam using the tool by viewing the fluoresced target through targeting optics of the laser beam delivery system;
- and
- adjusting the scanning beam delivery system in response to the sensed laser beam by aligning laser beam delivery optics of the laser beam delivery system with the targeting optics until a viewed position of the fluoresced target is coincident with a target position of the targeting optics.
Dependencies are inferred from the claim text.