Control method for discharge lamp

Details Control method for discharge lamp Control method for discharge lamp

2007-11-27

2007-11-27

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Special application

Vehicle

C307S010800

Reexamination Certificate

active

11492562

ABSTRACT:
A method for controlling a discharge lamp by a power controlling device on an automobile vehicle includes a starting step and a switching step. The device supplies electricity to the lamp. In the starting step, the discharge lamp starts to emit a light such that the device supplies a first electricity. In the switching step, the device switches from the first electricity to a second electricity so that the lamp maintains to emit the light with the second electricity, which is smaller than the first electricity. In the switching step, a temperature of the lamp is decreased with a temperature gradient, which is equal to or smaller than a predetermined gradient.

REFERENCES:
patent: 6320275 (2001-11-01), Okamoto et al.
patent: 6850015 (2005-02-01), Ishizuka et al.

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