Title:
ELECTRIC LAMP COMPRISING ALUMINUM OXIDE AND CERIUM OXIDE
Document Type and Number:
WIPO Patent Application WO2005024893
Kind Code:
A3
Abstract:
The invention relates to an electric lamp provided with a light source in a light-transmitting lamp vessel which is closed in a vacuumtight manner, which light source has an envelope of light-transmitting, UV-absorbing quartz glass which comprises silicon oxide, aluminum oxide and cerium oxide, characterized in that the quartz glass of the envelope comprises the aluminum oxide and cerium oxide in a molar ratio of between 0.30 and 0.48. The invention further relates to the quartz glass which is used for said lamp.
Inventors:
FLINK SIMON (NL)
KRIJNEN SIMON (NL)
CUPPEN SEBASTIANUS N G (NL)
SWART GERBRAND J (NL)
WAGE WILLEM (NL)
VAN DER MEULEN FRANK (NL)
KRIJNEN SIMON (NL)
CUPPEN SEBASTIANUS N G (NL)
SWART GERBRAND J (NL)
WAGE WILLEM (NL)
VAN DER MEULEN FRANK (NL)
Application Number:
PCT/IB2004/051515
Publication Date:
August 24, 2006
Filing Date:
August 20, 2004
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
FLINK SIMON (NL)
KRIJNEN SIMON (NL)
CUPPEN SEBASTIANUS N G (NL)
SWART GERBRAND J (NL)
WAGE WILLEM (NL)
VAN DER MEULEN FRANK (NL)
FLINK SIMON (NL)
KRIJNEN SIMON (NL)
CUPPEN SEBASTIANUS N G (NL)
SWART GERBRAND J (NL)
WAGE WILLEM (NL)
VAN DER MEULEN FRANK (NL)
International Classes:
H01J61/30; C03C3/06; C03C4/08; H01J61/02; H01J61/34; H01J61/50; H01K1/28
Foreign References:
| US5572091A | 1996-11-05 | |||
| EP0658920A1 | 1995-06-21 | |||
| US5464462A | 1995-11-07 | |||
| EP0598987A1 | 1994-06-01 | |||
| US20020180358A1 | 2002-12-05 |
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