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:
Apr. 27, 1999
Filed:
Nov. 28, 1997
Hidekazu Sawai, Tokyo, JP;
Tsukasa Matsuno, Tokyo, JP;
Mitsunobu Oshimura, Tokyo, JP;
Eikichi Hayashi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A beam confinement subsystem for an optical scanning system of a laser beam machine having a laser beam transfer path includes an expandable light path sealing and protecting member surrounding a portion of the laser beam transfer path, and a pressure adjusting buffer directly coupled to the expandable light path sealing and protecting member. Preferably, the pressure adjusting buffer including an expandable, airtight thin-film material. Additionally, the beam confinement can include a pressurized purge gas supply tank directly connected to the expandable light path sealing and protecting member to thereby provide greater protection from contamination to the laser beam transfer path.