PROJECTOR
First Claim
1. A projector comprising:
- plural high-pressure discharge lamps;
a high-pressure discharge lamp lighting device that lights the plural high-pressure discharge lamps;
a light combining system that combines and outputs lights from the plural high-pressure discharge lamps;
an electro-optical modulation device that modulates the light from the light combining system according to image information; and
a projection system that projects the light modulated by the electro-optical modulation device,the high-pressure discharge lamp lighting device supplying alternating lamp currents having alternating-current waveforms with the same waveform and period and phases shifted by a predetermined amount with respect to each of the high-pressure discharge lamps to the respective plural high-pressure discharge lamps.
1 Assignment
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Accused Products
Abstract
A projector includes: plural high-pressure discharge lamps; a high-pressure discharge lamp lighting device for lighting the plural high-pressure discharge lamps; a light combining system that combines and outputs lights from the plural high-pressure discharge lamps; an electro-optical modulation device that modulates the light from the light combining system according to image information; and a projection system that projects the light modulated by the electro-optical modulation device, wherein the high-pressure discharge lamp lighting device supplies alternating lamp currents having alternating-current waveforms with the same waveform and period and phases shifted by a predetermined amount with respect to each of the high-pressure discharge lamps to the respective plural high-pressure discharge lamps.
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Citations
9 Claims
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1. A projector comprising:
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plural high-pressure discharge lamps; a high-pressure discharge lamp lighting device that lights the plural high-pressure discharge lamps; a light combining system that combines and outputs lights from the plural high-pressure discharge lamps; an electro-optical modulation device that modulates the light from the light combining system according to image information; and a projection system that projects the light modulated by the electro-optical modulation device, the high-pressure discharge lamp lighting device supplying alternating lamp currents having alternating-current waveforms with the same waveform and period and phases shifted by a predetermined amount with respect to each of the high-pressure discharge lamps to the respective plural high-pressure discharge lamps. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A projector comprising:
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a plurality of high-pressure discharge lamps; a high-pressure discharge lamp lighting device that lights the plurality of high-pressure discharge lamps; a light combining system that combines and outputs lights from the plurality high-pressure discharge lamps; an electro-optical modulation device that modulates the light from the light combining system according to image information; and a projection system that projects the light modulated by the electro-optical modulation device, the high-pressure discharge lamp lighting device supplying alternating lamp currents to the respective plural high-pressure discharge lamps, the alternating lamp currents being triangular waves. - View Dependent Claims (9)
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Specification