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:
Aug. 03, 1999
Filed:
Nov. 05, 1996
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; H01S / ;
U.S. Cl.
CPC ...
355 67 ; 372 19 ;
Abstract
A laser beam machining apparatus including an image-transfer optical system having a mask inserted in an optical path between a laser oscillator and a workpiece, and a lens for reducing and forming an image of the mask on a processing surface; a focusing optical system; a drive unit for selecting one of the image-transfer optical system and the focusing optical system; and a numerical controller for controlling the image-transfer optical system, the focusing optical system, and the drive unit, wherein one of the image-transfer optical system and the focusing optical system is selected in correspondence with the diameter and depth of a hole to be processed.