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:
Sep. 19, 2017
Filed:
Mar. 13, 2014
Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v., Munich, DE;
Abstract
The invention relates to a method for forming a structuring at surfaces of components using a laser beam. In the invention, a laser beam is directed onto a diffractive optical element. The diffractive optical element is configured such that the laser beam is split into at least two part beams and the part beams are directed at an angle α with respect to the optical axis of the laser beam onto at least one further optical element which is transparent for the laser radiation. The further optical element(s) has/have a first surface and a second surface which is inclined at an angle to the optical axis of the laser beam at which the beam direction of the part beams is changed by optical refraction. A focusing optical lens is arranged in the optical path of the part beams between the further optical element(s) and a component surface to be processed, and the part beams are focused such that they are incident onto the surface of the component at a common position at an angle of incidence β with respect to the optical axis of the laser beam. The distance dbetween the optical elements is changed to change the interference period.