Device for processing eye tissue by a means of femtosecond laser pulses

摘要

For processing eye tissue (8) by means of femtosecond laser pulses, an ophthalmological device (1) includes a projection optical unit (2) for the focused projection of the femtosecond laser pulses into the eye tissue (8). Disposed upstream of the projection optical unit (2) is a first beam-deflecting scanner system (3) for scanning the eye tissue (8) with the femtosecond laser pulses along a processing line. A second beam-deflecting scanner system (5) is disposed upstream of the first scanner system (3) and is designed for scanning the eye tissue (8) with the femtosecond laser pulses in a scanning movement superimposed on the processing line and running in a deflection plane. The second scanner system (5) has a scanner speed that is a multiple of the scanning speed of the first scanner system (3). A rotation system is provided for aligning the deflection plane with a defined angle with respect to the processing line.

主权项

1. An ophthalmological device for processing eye tissue using femtosecond laser pulses comprising:
a projection optical unit for the focused projection of the femtosecond laser pulses into the eye tissue, a first beam-deflecting scanner system, disposed upstream of the projection optical unit, said upstream direction being defined extending from the projection optical unit and toward a source of the femtosecond laser pulses, for scanning the eye tissue with the femtosecond laser pulses along a processing line, a second beam-deflecting scanner system, disposed upstream of the first beam-deflecting scanner system, for scanning the eye tissue with the femtosecond laser pulses in a scanning movement (f) superimposed on the processing line, and running in a deflection plane (FF), and a rotation system for aligning the deflection plane (FF) with a defined angle with respect to the processing line, wherein the rotation system comprises a rotation module and a rotation control module, the rotation module being configured to perform a defined rotation of the deflection plane (FF) about an optical projection axis (z), and the rotation control module being configured to define the rotation of the deflection plane (FF) on the basis of the course of the processing line.