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. 07, 2003
Filed:
Oct. 18, 2000
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A CO laser beam is converted into a beam of uniform intensity at the position of a phase matching element by an intensity converting element and the phase matching element . Then, the uniform intensity beam irradiates a mask containing an aperture variable in size via a variable-magnification projecting optical system . At the time of irradiation, the laser beam at the position of the phase matching element is projected onto the mask at a magnification factor most suited to the size of the aperture formed in the mask . Further, the pattern of the mask is projected onto a workpiece . Thus, a uniform intensity distribution of the laser beam is obtained on the workpiece and high quality laser processing becomes possible.