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:
Jun. 06, 1995
Filed:
Nov. 17, 1993
Hidehiko Karasaki, Ashiya, JP;
Shigeki Yamane, Kobe, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A laser resonator includes; an optical oscillator including a discharge tube, and a pair of reflecting mirrors arranged at both ends of the discharge tube while inner surfaces of the mirrors confront each other; electrodes confronting each other with the discharge tube held therebetween; a gas pipe connected to the optical oscillator, and a gas circulating device connected to the gas pipe for circulating laser gas, wherein the laser resonator generates laser light when a voltage impressed to the electrodes invites discharge of the discharge tube while laser gas is circulated in the discharge tube by the gas circulating device. The laser resonator further includes a diffraction grating provided at one outer surface of either of the pair of reflecting mirrors to take out a part of the laser light passing through the reflecting mirror in a direction of a predetermined angle, and a photodetector for detecting an intensity of the laser light, the photodetector being disposed in the direction of the predetermined angle of that part of the taken-out laser light.