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:
May. 10, 1994
Filed:
Apr. 26, 1993
Nobuyuki Zumoto, Hyogo, JP;
Toshinori Yagi, Hyogo, JP;
Masao Izumo, Hyogo, JP;
Masaaki Tanaka, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A laser machining apparatus comprises a mask, a reflecting mirror and an imaging optical system. The laser light reflected by the mask and also by the reflecting mirror passes through the mask and images on the work for machining the work. The laser machining apparatus comprises means for causing said mask to move in parallel with said work for machining the work. This laser machining apparatus is able to machine a work having a large surface using small apertured mask. Another type of laser machining apparatus comprises a mask and a platform and an imaging optical system. The mask and the work are puts in the same plane of the platform and driven so that the image of the mask is mapped on the work via the imaging optical system. The laser machining apparatus is able to machine a large area at low price and high accuracy.