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. 15, 2014
Filed:
Dec. 02, 2011
Hiroki Ogawa, Osaka, JP;
Jun Sakaguchi, Osaka, JP;
Hiroki Ogawa, Osaka, JP;
Jun Sakaguchi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A high-pressure discharge lamp comprising an arc tube, the arc tube including: a light-emitting part which is substantially ellipsoidal; and sealing parts which extend from either end of the light-emitting part and in which bases of electrodes are sealed, the arc tube enclosing 0.2 mg/mmto 0.4 mg/mmof mercury, the high-pressure discharge lamp having a power rating greater than 355 W and not greater than 600 W, wherein 5.4≦D≦5.8 and 3.1≦X≦D−2.3 when 355<P≦380, 5.8≦D≦6.2 and 3.1≦X≦D−2.7 when 380<P≦450, and 6.2≦D≦6.6 and 3.1≦X≦D−3.3 when 450<P≦600, where P denotes the power rating in watts of the high-pressure discharge lamp, D denotes an inside diameter in millimeters of the light-emitting partwith reference to a midpoint between the electrodes, and X denotes a wall thickness in millimeters of the light-emitting partwith reference to the midpoint between the electrodes