Electric lamp and discharge devices – With gas or vapor – Having electrode exterior to envelope
Reexamination Certificate
2005-03-01
2005-03-01
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Having electrode exterior to envelope
C313S594000, C315S500000, C315S005520, C315S047000
Reexamination Certificate
active
06861805
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.
REFERENCES:
patent: 3757159 (1973-09-01), Gutta et al.
patent: 3876895 (1975-04-01), Lake et al.
patent: 4179640 (1979-12-01), Larson et al.
patent: 4491766 (1985-01-01), Larson
patent: 4742269 (1988-05-01), Izumiya et al.
patent: 4950938 (1990-08-01), Ramaiah
patent: 4983889 (1991-01-01), Roberts
patent: 5382873 (1995-01-01), Scholl et al.
patent: 5438235 (1995-08-01), Sommerer et al.
patent: 5604410 (1997-02-01), Vollkommer et al.
patent: 5637960 (1997-06-01), Juengst et al.
patent: 6172462 (2001-01-01), Gibson et al.
patent: 6326721 (2001-12-01), Shippee et al.
patent: 6400076 (2002-06-01), Allen et al.
patent: 6465940 (2002-10-01), Ikeuchi et al.
patent: 6501220 (2002-12-01), Lambrechts et al.
patent: 0549056 (1993-06-01), None
Verderber, Rudolph writes the article “Industrial Lightning” in “Wiley Encyclopedia of Electrical and Electronics Engineering Online”.
Alderman John C.
Carleton Sarah A.
Collins Kent L.
Conrad, Sr. John E.
Gibson, III Ray G.
Bartlett Ernestine C.
Harper Holly
Koninklijke Philips Electronics , N.V.
Patel Nimeshkumar D.
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