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:
Mar. 30, 1999
Filed:
Mar. 06, 1996
Applicant:
Inventor:
Hajime Osanai, Tokyo, JP;
Assignee:
Mitsubushi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912174 ; 21912184 ; 359846 ;
Abstract
In the present invention, a curvature variable reflector made from a material capable of elastically deforming in response to a fluid pressure is formed to a curved-face mirror by making use of a pressure by a fluid such as air so that a diameter of a laser beam coming into a converging optical member can be changed at a high speed step by step or smoothly. And by controlling the fluid pressure step by step or steplessly according to a type or thickness of a work, machining can always be performed with an appropriate laser beam diameter.