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. 12, 2002
Filed:
Oct. 21, 1999
Haruki Sasaki, Chiba-ken, JP;
Kouji Kawamura, Chiba-ken, JP;
Miyachi Technos Corporation, Chiba-Ken, JP;
Abstract
In a power monitor mode, during the laser oscillation output there are fetched laser output measured values, lamp voltage measured values and lamp current measured values (step J ), and energy of each pulse is figured out on the basis of time integral value of the laser output measured values (step J ). Then, at a certain time Ta interval, an energy average value and a laser output average value are figured out for display based on the cumulative value of the energy of each pulse, and a lamp power average value Q and a lamp power input ratio K are found by calculation from the cumulative value of the lamp power (S ·S ) of each pulse (step J ). In OFF display mode the lamp power input ratio K appears. Under the laser output feedback control, the lamp power input ratio K gradually goes up according as the deterioration with time increases within a laser oscillation unit.