Electrodeless low-pressure discharge lamp operating device...

Details Electrodeless low-pressure discharge lamp operating device... Electrodeless low-pressure discharge lamp operating device...

2006-05-23

2006-05-23

Lee, Wilson (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Induction-type discharge device load

C313S493000

Reexamination Certificate

active

07049763

ABSTRACT:
An electrodeless discharge lamp operating device including a light-transmitting discharge bulb120, an induction coil including a core103and a coil104, and a ballast circuit140for supplying a high-frequency power to the induction coil. The operating frequency of the ballast circuit140is in the range of 80 kHz to 500 kHz, and where the operating frequency of the ballast circuit140is f (kHz) and the power input to the discharge bulb120is P (W), the rare gas pressure p (Pa) in the discharge bulb120satisfies the relationship of the following expression:p≥AP-Bf2-C[Expression⁢⁢1](where A, B and C are constants having the following values: A=4.0×104, B=3.5×104and C=6.2), and the power input P to the discharge bulb120is 7 W at minimum and 22 W at maximum.

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International Search Report for PCT/JP03/06902; ISA/JPO; Mailed: Sep. 9, 2003.

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