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:
Feb. 22, 2005
Filed:
May. 21, 2003
Applicant:
Tatumi Hiramoto, Tokyo, JP;
Inventor:
Tatumi Hiramoto, Tokyo, JP;
Assignee:
Ushio Denki Kabushiki Kaisya, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B039/00 ; H01J017/20 ;
U.S. Cl.
CPC ...
Abstract
The object of the present invention is to provide a flash lamp unit with a long service life which allows a high radiant efficiency to be obtained and a flash radiation device demonstrating excellent flash radiant performance despite a small size, and the flash lamp unit comprises a flash lamp having mercury sealed in a discharge container, wherein preheating means is provided for preheating the flash lamp, the quantity of contained mercury in the flash lamp is in the range of 0.2 to 55 mg/cm, and the flash lamp is ignited under the specified conditions, and