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:
Dec. 08, 2009
Filed:
Jul. 16, 2008
Atsushi Imamura, Himeji, JP;
Kenichi Yoshida, Himeji, JP;
Kazuhiro Goto, Himeji, JP;
Ushiodenki Kabushiki Kaisha, Tokyo, JP;
Abstract
A light source device, including an alternating current high-pressure mercury lamp having a pair of electrodes opposite each other with a spherical light-emitting part having at least 0.15 mg/mmof mercury and halogen at 10μmol/mmto 10μmol/mm, and cylindrical hermetically sealed parts extending from both ends of the light-emitting part. External leads protrude from the ends of the light-emitting part for receiving alternating current. A reflecting mirror having a concave reflecting part surrounds the light-emitting part and a cylindrical neck part. An adhesive for securing the mercury lamp and the reflecting mirror fills a periphery of the hermetically sealed parts of the mercury lamp. The distance L(mm) from a center in between the electrodes to the adhesive is set at a value of one of 16 mm or less and 20 mm or greater.