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. 04, 2014
Filed:
Feb. 13, 2012
Yuya Yamazaki, Gyoda, JP;
Tooru Nagase, Gyoda, JP;
Katsuaki Okubo, Gyoda, JP;
Shinichi Suzuki, Gyoda, JP;
Yuya Yamazaki, Gyoda, JP;
Tooru Nagase, Gyoda, JP;
Katsuaki Okubo, Gyoda, JP;
Shinichi Suzuki, Gyoda, JP;
Iwasaki Electric Co., Ltd, Chuo-ku, Tokyo, JP;
Abstract
A xenon lamp drive unit of the present invention comprises: a charging circuit; and a current control circuit adapted to supply a current to a xenon lamp by using a charged voltage of the charging circuit as a power source, wherein the current control circuit is adapted to supply, in a first period after a lamp ignition, a high output lamp current having a higher current value than a steady output lamp current to the xenon lamp by constant current control and supply, in a second period after the first period, the steady output lamp current to the xenon lamp by constant current control.