Gas discharge lamp dimming controlling method, involves providing lamp with electric energy to maintain lamp in start condition, where duty voltage in dimming period lasts length equal to dimming period

摘要

The method involves providing a start period for igniting a gas discharge lamp. A dimming period that has a duty voltage set initially in a previous OFF period of the lamp is provided after the start period. The lamp is provided with electric energy to maintain it in a start condition, where the duty voltage in the dimming period lasts a length equal to the dimming period corresponding to the different dimming values.