Patent ID: 11896526
Assignee: AMO DEVELOPMENT, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 4:
5. A laser eye surgical system, comprising:
a laser assembly for generating a laser beam;
a sensor mirror between the laser assembly and a scanning mirror;
a sensor positioned to detect light reflected by the sensor mirror;
an objective lens between the scanning mirror and a target;
a target holder configured to support the target at a plurality of different distances from the objective lens along a propagation direction of the laser beam; and
a computer linked to the laser assembly, the sensor, the scanning mirror and the target holder;
wherein the laser assembly projects the laser beam through the sensor mirror to a scanning mirror, wherein the laser beam is reflected by the scanning mirror and projected through the objective lens and onto the target;
wherein the target has a plurality of lines reflecting laser light of the laser beam to the sensor via the objective lens, the scanning mirror and the sensor mirror, and the sensor provides a signal to the computer based on sensed light reflected from the target;
wherein the computer is configured to control the target holder to successively support the target at the plurality of different distances from the objective lens, to receive a plurality of signals from the sensor while the target is successively supported at the plurality of different distances from the objective lens, and to compare the received plurality of signals to identify a focal plane position along the propagation direction of the laser beam where the laser beam is best focused.