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:
Mar. 01, 2005
Filed:
May. 08, 2001
Andrew D. Jackson, Salina, KS (US);
Ray G. Gibson, Iii, Bath, NY (US);
Sarah A. Carleton, Hammondsport, NY (US);
Shiming Wu, Painted Post, NY (US);
Louis N. Kowalczyk, Alfred Station, NY (US);
Thomas Steere, Hornell, NY (US);
Jay J. Palmer, Bath, NY (US);
John C. Alderman, Corning, NY (US);
John E. Conrad, Sr., Bath, NY (US);
Kent L. Collins, Hammondsport, NY (US);
Andrew D. Jackson, Salina, KS (US);
Ray G. Gibson, III, Bath, NY (US);
Sarah A. Carleton, Hammondsport, NY (US);
Shiming Wu, Painted Post, NY (US);
Louis N. Kowalczyk, Alfred Station, NY (US);
Thomas Steere, Hornell, NY (US);
Jay J. Palmer, Bath, NY (US);
John C. Alderman, Corning, NY (US);
John E. Conrad, Sr., Bath, NY (US);
Kent L. Collins, Hammondsport, NY (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to a high-pressure discharge lamp of the ceramic metal halide type of the Philips MasterColor series having a molybdenum coil wrapped around the discharge vessel and at least a portion of the electrode feed through means, and having power ranges of about 150 W to about 1000 W. Such lamps are provided with a discharge vessel which encloses a discharge space. The discharge vessel has a ceramic wall and is closed by a ceramic plug. An electrode which is located inside the discharge space is connected to an electric conductor by way of a leadthrough element. The leadthrough element projects through the ceramic plug with a close fit and is connected thereto in a gastight manner by way of a sealing ceramic. The leadthrough element has a first part which is formed by a cermet at the area of the gastight connection. In addition, the lamps display one or more and most preferably all of the following properties: a CCT (correlated color temperature) of about 3800 to about 4500K, a CRI (color rendering index) of about 70 to about 95, a MPCD (mean perceptible color difference) of about ±10, and a luminous efficacy up to about 85-95 lumens/watt, a lumen maintenance of >80%, color temperature shift <200K from 100 to 8000, and lifetime of about 10,000 hours to about 25,000 hours. The invention also relates to design spaces for the design and construction of high power lamps and methods for construction of such lamps using the design spaces.