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. 02, 1991
Filed:
Sep. 27, 1989
Applicant:
Inventor:
Paul H Beckwith, Ottawa, CA;
Assignee:
Lumonics Inc., Kanata, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 34 ; 372 33 ; 372 99 ; 372 38 ;
Abstract
This invention describes a method and apparatus that can be used in optic quality monitoring of a gas laser. The method involves measuring the temperature of at least one of the optics in a gas laser, then subtracting the temperature of the laser enclosure from the optic temperature to obtain a temperature differential, and finally dividing the differential by a value proportional to the output power of the laser. The final value, termed 'figure of merit', gives a quantitative measure of the condition of the optic. As a result appropriate cleaning and replacement decisions can be made for one or both of the optics in a gas laser.