Coil antenna/protection for ceramic metal halide lamps

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....

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Hauptverfasser: KOWALCZYK LOUIS N, JACKSON ANDREW D, COLLINS KENT L, CONRAD, SR. JOHN E, STEERE THOMAS, WU SHIMING, CARLETON SARAH A, ALDERMAN JOHN C, GIBSON, III RAY G, PALMER JAY J
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creator KOWALCZYK LOUIS N
JACKSON ANDREW D
COLLINS KENT L
CONRAD, SR. JOHN E
STEERE THOMAS
WU SHIMING
CARLETON SARAH A
ALDERMAN JOHN C
GIBSON, III RAY G
PALMER JAY J
description 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
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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 &gt;80%, color temperature shift &lt;200K from 100 to 8000, and lifetime of about 10,000 hours to about 25,000 hours. 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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
title Coil antenna/protection for ceramic metal halide lamps
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