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:
Oct. 31, 2017
Filed:
Aug. 31, 2015
Disco Corporation, Tokyo, JP;
Keiji Nomaru, Tokyo, JP;
Koichi Katayama, Tokyo, JP;
Disco Corporation, Tokyo, JP;
Abstract
A laser machining apparatus has a laser beam irradiation unit that includes: a pulsed laser oscillator that oscillates a pulsed laser beam at a given repetition frequency; first and second condensers that collect the pulsed laser beam oscillated by the pulsed laser oscillator; and a beam splitting unit arranged between the pulsed laser oscillator and the first and second condensers to split the pulsed laser beam oscillated by the pulsed laser oscillator and direct the resultant beams alternately toward the first and second condensers. The beam splitting unit includes a photoelastic modulator that has a piezo element and a synthetic quartz formed in one piece and modulates the laser beam so that a polarization plane of the laser beam is alternately at 0 and 90 degrees by applying, to the piezo element, a high frequency voltage at a frequency that matches the natural frequency of the synthetic quartz.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile