Apparatus for ophthalmic laser surgery

US8915905B2 · kind B2 · utility

Assignee

• WaveLight GmbH · DE

Inventors

• Klaus Vogler · Eckental, DE
• Claudia Gorschboth · Koblenzer Straße, DE

Key dates

• Filing date: Jun 12, 2009
• Grant date: Dec 23, 2014
• Expiry date: Jun 1, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00897
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An apparatus for ophthalmic laser surgery comprises a source (28) for a pulsed femtosecond laser beam, a telescope (32) expanding the laser beam, a scanner (36) downstream of the telescope, for deflecting the laser beam in a plane perpendicular to the beam path, and also an f-theta objective (44) downstream of the scanner, for focusing the laser beam. In accordance with the invention, an entrance lens (52) of the telescope (32) takes the form of a controllable lens of variable refractive power. The entrance lens (52) is preferentially constituted by an electrically controllable liquid lens or liquid-crystal lens.