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:
Jan. 26, 2016
Filed:
Sep. 23, 2014
Toshiba Lighting & Technology Corporation, Yokosuka-shi, Kanagawa-ken, JP;
Keisuke Nakazato, Yokosuka, JP;
Toshiba Lighting & Technology Corporation, Yokosuka-shi, Kanagawa-ken, JP;
Abstract
According to one embodiment, a discharge lamp includes a light-emitting part including a discharge space therein in which a metal halide and a gas are sealed, and a pair of electrodes which protrude toward an inside of the discharge space and are arranged to face each other while separated by a specified distance. Power consumption at a time of stable lighting is 20 W or more and 30 W or less. When a pressure of the gas sealed in the discharge space is X (atm), and a distance between a center axis of the electrodes and a surface of the metal halide is m (mm), a following expression is satisfied: 0.085≦m/X≦0.12.