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:
Jul. 17, 2007
Filed:
Mar. 02, 2004
Seiji Ashida, Kanagawa-ken, JP;
Hisashi Honda, Kanagawa-ken, JP;
Shinji Atago, Kanagawa-ken, JP;
Satoshi Iwasawa, Kanagawa-ken, JP;
Seiji Ashida, Kanagawa-ken, JP;
Hisashi Honda, Kanagawa-ken, JP;
Shinji Atago, Kanagawa-ken, JP;
Satoshi Iwasawa, Kanagawa-ken, JP;
Osram-Melco Toshiba Lighting Ltd., Kanagawa-Ken, JP;
Abstract
A high-intensity discharge lamp connected to a lighting device has various superior emission properties such as efficiency. The discharge lamp includes a translucent ceramic discharge vessel, in which a pair of electrodes and a discharge medium are inserted. The lamp further includes an outer jacket, in which the arc tube is disposed, and a pair of feeder members. The discharge medium has metal halides including those of Na, Tl and Tm or Na, Tl, In and Tm, and the ratio (MTm/M) of the weight of the gross sealed mass M of the metal halides to the filled mass MTm of the Tm halide is about 0.4≦MTm/M≦0.9. The deviation in chromaticity (d.u.v.) on the x-y chromaticity coordinates (CIE 1931) for the overall operating position during the life of the lamp is within the range of about −0.006 to +0.010.