Patent ID: 7954961

Claim:
A method for driving a high-pressure gas discharge lamp of a projector system, which is suitable to produce a light beam of a basic color, which is selected from several basic colors, during a projection interval and to supply said light beam to a light valve device, wherein the lamp is driven by a lamp current, and during said projection interval light valves of the light valve device are controlled to have each valve provide a respective wanted light integral over said projection interval, characterized in that during at least one of a sequence of successive projection intervals the amplitude of the lamp current is temporarily reduced for at least a time lapse during which all light valves can be controlled for said one basic color, wherein the beam is made to contain different basic colors during successive projection intervals, and a duration of the reduced lamp current amplitude partly coincides with a duration of a transition interval between successive projection intervals, wherein the duration of the reduced current amplitude is greater than the duration of the transition interval between successive projection intervals, and wherein the amplitude of the lamp current is reduced during a first projection interval before reaching a transition interval and the amplitude of the lamp current is restored after said transition interval has ended during a second projection interval directly following the transition interval.