Jordan and Hamburg LLP
Method and device for lighting high pressure discharge lamps
Improved method and device for lighting a high pressure discharge lamp are provided which prevent arc jump and inhibit deterioration of lamp voltage and luminance. The method includes the step of: alternately repeating a superposition operation for superposing a pulse current on a lamp current applied to the high pressure discharge lamp for a predetermined time period and a superposition stopping operation for stopping the superposition of the pulse current for a predetermined time period.
Phoenix Electric Co., Ltd.
H Y
H05B Y02B
inventional additional
Toshitaka Atsuji
Fujii Nakagawa