Invention Grant
- Patent Title: Coil antenna/protection for ceramic metal halide lamps
- Patent Title (中): 陶瓷金属卤化物灯的线圈天线/保护
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Application No.: US09851443Application Date: 2001-05-08
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Publication No.: US06861805B2Publication Date: 2005-03-01
- Inventor: Andrew D. Jackson , Ray G. Gibson, III , Sarah A. Carleton , Shiming Wu , Louis N. Kowalczyk , Thomas Steere , Jay J. Palmer , John C. Alderman , John E. Conrad, Sr. , Kent L. Collins
- Applicant: Andrew D. Jackson , Ray G. Gibson, III , Sarah A. Carleton , Shiming Wu , Louis N. Kowalczyk , Thomas Steere , Jay J. Palmer , John C. Alderman , John E. Conrad, Sr. , Kent L. Collins
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee Address: NL Eindhoven
- Agent Ernestine C. Bartlett
- Main IPC: H01J61/073
- IPC: H01J61/073 ; H01J61/12 ; H01J61/16 ; H01J61/20 ; H01J61/30 ; H01J61/36 ; H01J61/50 ; H01J61/54 ; H01J61/56 ; H01J61/82 ; H01J61/06

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
Public/Granted literature
- US20020185973A1 Coil antenna/protection for ceramic metal halide lamps Public/Granted day:2002-12-12
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