The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2019
Filed:
Mar. 05, 2018
Wavelight Gmbh, Erlangen, DE;
Klaus Vogler, Blankenhain, DE;
Olaf Kittelmann, Berlin, DE;
Edlef Buettner, Berlin, DE;
Jan Popien, Berlin, DE;
Wavelight GmbH, , DE;
Abstract
In certain embodiments, a laser device for laser processing of an eye comprises a source of a pulsed laser beam, a detector system that photodetects partial beams generated from the laser beam, and a control unit that evaluates the detection signals. A first detection element of the detector system provides a first detection signal based on single-photon absorption. A second detection element provides a second detection signal based on two-photon absorption. The control unit puts the measured signal strengths of the two detection signals into a ratio to one another. Variations in the resulting ratio value may be traced back to variations in the pulse duration and/or wave front of the laser beam. The control unit may initiate countermeasures to maintain the beam quality of the laser beam.