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. 04, 2003
Filed:
Nov. 09, 2000
Koninklijke, Philips Electronics N.V., Eindhoven, NL;
Abstract
The high-pressure discharge lamp comprises a lamp vessel ( ) in which an anode ( ) and a cathode ( ) are disposed spaced apart by an electrode distance D of 1-2 mm, the anode ( ) having a tip ( ) with a blunt end surface S. The area of the end surface S in mm and the lamp current I in amperes satisfy a relationship according to which 0.09≦S/I≦0.16, with 3.5≦I≦8.0 amperes. The ionizable filling containing metal halide comprises an amount of mercury between 65-125 mg/cm . The power range of the lamp is between 200 and 400 watts. The calculated power gap ratio, PGR=P/D, is over 120 W/mm. The lamp is suitable for comparatively high brightness applications and at the same time is comparatively stable and has a comparatively long life.