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:
Nov. 07, 1995
Filed:
Apr. 11, 1994
Yasumasa Hanazaki, Hyogo, JP;
Nobuo Ukita, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A discharging lamp lighting apparatus is provided with predicting means for predicting final discharging lamp voltage of a discharging lamp, and discharging lamp control means including a discharging lamp voltage-discharging lamp current corresponding characteristic to instruct current applied to the discharging lamp by discharging lamp voltage fed to the discharging lamp, for performing lighting control by using a value predicted by the predicting means. It is thereby possible to feed the optimal power to the discharging lamp according to a variation in the final discharging lamp voltage due to quality or an operating time, and reduce a time required for stability of luminous flux.