Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent
1995-10-06
1997-06-03
Pascal, Robert
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Induction-type discharge device load
315267, 315344, 313493, H05B 4116
Patent
active
056358024
ABSTRACT:
A lighting unit according to the invention comprises an electrodeless low-pressure discharge lamp 20 provided with a discharge vessel 20 enclosing a discharge space 20 with an ionizable filling in a gastight manner. The discharge vessel 20 has a recessed portion 23 and an enveloping portion 23 which transmits radiation generated in the discharge vessel. Means are present in the recessed portion for initiating and maintaining an electric discharge in the discharge space. The means comprise a member for generating an electric field in the discharge space. The recessed portion is provided with a luminescent layer, which is subdivided into mutually separated regions, at a surface facing the discharge space. The lighting unit further comprises a supply unit for supplying the means. The lamp of the lighting unit according to the invention has a comparatively low ignition voltage.
REFERENCES:
patent: 4362967 (1982-12-01), Littwin et al.
patent: 4710678 (1987-12-01), Houkes et al.
patent: 5465028 (1995-11-01), Antonis et al.
Egbert Walter M.
Pascal Robert
U.S. Philips Corporation
Vu David
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