초록 ▼

A laser beam guidance system comprises a combination of mirrors that establishes an optical channel within which the laser beam is confined for movement. The system also includes means for moving the combination of mirrors to spatially reorient the optical channel. A beam steering scanner located on

A laser beam guidance system comprises a combination of mirrors that establishes an optical channel within which the laser beam is confined for movement. The system also includes means for moving the combination of mirrors to spatially reorient the optical channel. A beam steering scanner located on the path of the laser beam moves the beam within the optical channel onto selected paths which generally follow the longitudinal axis of the channel. Additionally, a focusing element in the system brings the beam into focus at selectable points on the beam. In accordance with a preestablished program, the beam is moved within the channel and focused at points along the beam to photochemically affect cells in the cornea of the eye.

대표청구항 ▼

An apparatus for steering and focusing a laser beam to a predetermined point in space according to the topography of an eye which comprises: a laser beam source having means to direct said beam along a path in an optical channel defined by an envelope in which said path of said beam is steered; an o

An apparatus for steering and focusing a laser beam to a predetermined point in space according to the topography of an eye which comprises: a laser beam source having means to direct said beam along a path in an optical channel defined by an envelope in which said path of said beam is steered; an optical element positioned in said path to focus said beam at a preselected point on said path; a director positioned within said optical channel constituting means for selectively reorienting said channel in accordance with the topography of the eye, said director having a turning mirror, a plane mirror, and an objective lens system sequentially oriented in said path of said beam and moveable with respect thereto constituting means for reorienting said optical channel while maintaining the length of said optical channel; and a tuner positioned within said optical channel to receive said beam and selectively alter said path to bring said preselected point on said path into coincidence with said predetermined point in space, said tuner having a plurality of galvanometric mirrors positioned in said path of said beam to alter said path, and said optical element comprises a convex lens positionable in said path of said beam.