Title:
LOW-PRESSURE MERCURY VAPOR DISCHARGE LAMP
Document Type and Number:
WIPO Patent Application WO2005017944
Kind Code:
A3
Abstract:
Low-pressure mercury vapor discharge lamp has an at least partly substantially cylindrical discharge vessel (10) with a length Ldv and with an internal diameter Din. The discharge vessel encloses, in a gastight manner, a discharge space (13) provided with a inert gas mixture and with mercury. The discharge vessel comprises discharge means (electrodes 20a; 20b) for maintaining a discharge in the discharge space. A conductive layer (16) is disposed surrounding at least partially the discharge in the discharge space. The conductive layer is provided with potential means for applying a potential to the conductive layer. The ratio of the weight of mercury mxg in the discharge vessel to the product of the internal diameter Din and the length of the discharge vessel Ldv is given by the relation: Formula (I), wherein C <= 0.01 µG/MM<2. >The discharge lamp according to the invention operates under unsaturated mercury conditions.
More Like This:
| WO/2010/069122 | INDUCTION LAMPS |
| JP2004356098 | COLD-CATHODE FLUORESCENT LAMP EQUIPPED WITH MOLYBDENUM ELECTRODE |
| JPS5761238 | ELECTRON EMISSION SUBSTANCE AND PRODUCTION |
Inventors:
DEKKER JAN P (NL)
Application Number:
PCT/IB2004/051375
Publication Date:
July 28, 2005
Filing Date:
August 03, 2004
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
DEKKER JAN P (NL)
DEKKER JAN P (NL)
International Classes:
H01J61/04; H01J61/20; H01J61/35; H01J61/72; (IPC1-7): H01J61/72; H01J61/04; H01J61/20; H01J61/35
Domestic Patent References:
| WO2003032364A1 | 2003-04-17 | |||
| WO2001039244A1 | 2001-05-31 |
Foreign References:
| US6107757A | 2000-08-22 | |||
| US4546285A | 1985-10-08 | |||
| US5753999A | 1998-05-19 | |||
| EP1043752A1 | 2000-10-11 |
Download PDF:
Previous Patent: METHOD AND APPARATUS FOR PLASMA GENERATION
Next Patent: VEHICLE LAMP WITH INCREASED THERMAL STABILITY
Next Patent: VEHICLE LAMP WITH INCREASED THERMAL STABILITY