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. 01, 2005
Filed:
Feb. 25, 2004
Akio Ishizuka, Yokohama, JP;
Akio Ishizuka, Yokohama, JP;
Harison Toshiba Lighting Corp., Ehime-ken, JP;
Abstract
There is disclosed a high-pressure metal-vapor discharge lamp lighting apparatus comprising control circuit constituted to supply a lamp power larger than a rated lamp power from lighting circuit and light a high-pressure metal-vapor discharge lamp and to subsequently control the lighting circuit in such a manner that the lamp power is successively reduced in accordance with predetermined reduction ratio characteristics to settle at the rated lamp power and to be capable of varying the reduction ratio characteristics in accordance with fluctuations of rising characteristics of a quantity of light in the high-pressure metal-vapor discharge lamp.