Laser device, in particular, for ophthalmological laser surgery

摘要

A laser device, in particular for ophthalmological laser surgery, comprising a laser source (14) for providing laser radiation, controllable scan components (20) for setting a focus position of the laser radiation, measuring components (30) for registering information that is representative of an actual position of the radiation focus, and also a control arrangement (22) controlling the laser source and the scan components. In accordance with the invention, the control arrangement has been set up to bring about the implementation of a test-mode operation of at least some of the scan components with the laser source turned off, in accordance with a predetermined test scan pattern, the test scan pattern defining at least one scan path for the radiation focus, and the control arrangement having been set up to bring about, during a scan movement along the scan path, repeatedly in succession a registration of the actual focus position without stopping the scan movement, and to ascertain a desired focus position, assigned to each registered actual focus position.

主权项

1. A laser device for ophthalmological laser surgery, comprising:
a laser source configured to provide laser radiation; controllable scan components configured to set a focus position of the laser radiation; measuring components configured to detect the position of a scan component to register information that indicates an actual position of the radiation focus; a control arrangement configured to:
control the laser source and the scan components,implement a test-mode operation of at least one of the scan components with the laser source turned off, in accordance with a predetermined test scan pattern that defines at least one scan path for the radiation focus,initiate, during a scan movement along the scan path, repeatedly in succession and at regular temporal intervals a registration of the actual focus position without stopping the scan movement, andascertain a desired focus position, assigned to each registered actual focus position, from a progression of the scan path, a time-interval with which the actual focus position is registered, and a velocity of the scan path.