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:
Jan. 27, 2009
Filed:
Jan. 04, 2006
Kenji Furuta, Tokyo, JP;
Ryugo Oba, Tokyo, JP;
Kenji Furuta, Tokyo, JP;
Ryugo Oba, Tokyo, JP;
Disco Corporation, Osaka, JP;
Abstract
A laser beam processing machine including a chuck table for holding a workpiece, a laser beam application device for applying a laser beam to the workpiece held on the chuck table, and a processing-feed mechanism for moving the chuck table and the laser beam application device relative to each other. The condenser of the laser beam application device includes a first prism for dividing the laser beam oscillated from the laser beam oscillation mechanism into a first laser beam and a second laser beam, and a second prism for correcting optical paths of the first laser beam and the second laser beam so they become parallel to each other. An image forming lens forms respective spots of the first laser beam and the second laser beam whose optical paths have been corrected to be parallel to each other by the second prism, into images of spots having linear portions on the outer sides and arcuate portions on the inner sides.