Opthalmologic therapy system and method for processing a portion of a processing volume of a transparent material by application of focused radiation

An ophthalmologic therapy system for processing a portion of a processing volume of a transparent material of an eye by application of focused radiation, comprising

• a device that generates radiation;
• an optical system that focuses the radiation at a focus in the processing volume, wherein the focus of the focused radiation has a focal angle (φ) and the focused radiation is directed along a beam axis;
• a scanner that changes position of the focus in the processing volume, which can be described with three spatial directions x, y and z, wherein the z-direction proceeds parallel to the beam axis of the focused radiation;
• a controller that controls the ophthalmologic therapy system;
• wherein the controller is encoded with a scan pattern, which scan pattern includes adjacent strokes with each adjacent stroke having an angle of inclination (α) to the beam axis;
• and
• wherein the angle of inclination (α) of the strokes to the beam axis is always larger than or equal to the focal angle (φ) of the focused radiation.

A method of processing a portion of a processing volume of a transparent material of an eye by application of focused radiation applied by an ophthalmologic therapy system which comprises a device that generates the focused radiation, and an optical system that focuses the radiation at a focus in the processing volume which can be described with three spatial directions x, y and z, wherein the focus of the focused radiation comprises a focal angle (φ) and the focused radiation comprises a beam axis, the method comprising:

• generating a scan pattern which has mutually adjacent strokes with angles of inclination (α) to the beam axis, wherein a stroke comprises a section of a scan line and is formed by stringing together focus effective zones of the focused radiation, wherein the angle of inclination (α) of the strokes to the beam axis is larger or equal to a focal angle (φ) of the focused radiation;
• changing a position of the focus on a basis of the scan pattern by scanning movement by operation of at least a first scanner in a section of the processing volume determined by the three spatial directions;
• and
• generating the mutually adjacent strokes of the scan pattern in the transparent material by application of the focused radiation to the transparent material at points along a scan line.