Optical system for ophthalmic surgical laser
AssigneeAlcon LenSx, Inc.
InventorsFerenc Raksi, Jesse Buck
Life of this patent
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Abstract
A laser system for ophthalmic surgery includes a laser source, to generate a pulsed laser beam, an XY scanner, to receive the pulsed laser beam, and to output an XY-scanning beam, scanned in two directions transverse to a Z axis, a Z scanner, to receive the XY-scanning beam, and to output an XYZ-scanning beam, scanned in addition along the Z axis, the Z scanner including a first lens group to output a beam having an intermediate focal plane, and a movable lens group to receive the beam through the intermediate focal plane and to collimate the beam in a variable manner, and an objective to receive the collimated beam from the Z scanner and to focus the beam into a focal spot in a target region.
Claims22
A laser system for ophthalmic surgery, comprising:
- a laser source, to generate a pulsed laser beam;
- an XY scanner,
- to receive the pulsed laser beam, and
- to output an XY-scanning beam, scanned in two directions transverse to a Z axis;
- a Z scanner,
- to receive the XY-scanning beam;
- and
- to output an XYZ-scanning beam, scanned in addition along the Z axis;
- the Z scanner comprising
- a first lens group to output a beam having an intermediate focal plane;
- and
- a movable lens group to receive the beam through the intermediate focal plane and to collimate the beam in a variable manner;
- and
- an objective to receive the collimated beam from the Z scanner and to focus the beam into a focal spot in a target region.
A method of ophthalmic surgery, the method comprising the steps of:
- generating a pulsed laser beam;
- XY scanning the pulsed laser beam in two directions transverse to a Z direction with an XY scanner;
- Z scanning the XY scanned beam along a Z direction with a Z scanner by
- focusing the XY scanned beam onto an intermediate focal plane with a first lens group;
- receiving the beam from the intermediate focal plane by a movable beam scanner;
- collimating the beam into an adjustable entrance pivot point of an objective by the movable beam scanner;
- and
- focusing the beam onto an XYZ scanned focal spot in a target region by the objective.
Dependencies are inferred from the claim text.