Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...
Reexamination Certificate
2005-07-05
2005-07-05
Vu, David (Department: 2828)
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Periodic switch in the primary circuit of the supply...
C315S224000, C315S246000
Reexamination Certificate
active
06914391
ABSTRACT:
An illuminating device according to an embodiment of the present invention includes a dielectric barrier discharge type low pressure discharge lamp1composed of a tubular glass lamp vessel10, in which mercury and rare gas are enclosed, a first and a second electrode21,26, which are made of electrically conductive layer, are provided on an outer surface of both ends of the tubular glass lamp vessel10and a high frequency power source of a floating output type81,82, which supplies a sine wave voltage between the first and the second electrodes of the dielectric barrier discharge type low pressure discharge lamp1having a neutral point of the sine wave voltage being grounded, and which supplies a frequency in a range from 40 kHz to 100 kHz.
REFERENCES:
patent: 5965988 (1999-10-01), Vollkommer et al.
patent: 6710535 (2004-03-01), Versluijs
Hirao Tomomasa
Kurita Takayoshi
Nakano Hiroki
Takagi Masami
Takeda Yuji
Banner & Witcoff , Ltd.
Harison Toshiba Lighting Corp.
Vu David
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