METHOD OF LASER MATERIAL PROCESSING (VERSIONS) Russian patent published in 2017 - IPC B23K26/14 

FIELD: physics.

SUBSTANCE: method includes the material direction focused lens of laser radiation with concurrent gas flow gas supply openings under the bottom surface of the lens and the nozzle area processing. Prior to focusing, the laser radiation is collimated. The gas flow is supplied to the central part of the lens or the protective glass placed under it by at least one series of focusing lens inclined to the optical axis and symmetrically located gas distribution holes. The central part of the lens or the protective glass placed under it, which is influenced by gas jets, is at least equal to the diameter of the laser radiation beam passing through them. Laser collimation telescope exercise through its negative and positive lens, floating along the optical axis.

EFFECT: increase the effectiveness of laser processing and machining quality by adjusting the laser power density in the treatment area, cooling and effective prevention of pollution and damage to the lens products and other small particles from the workpiece.

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