Patent ID: 9648292
Date: 2017-05-09
CPC Classifications: G03B,H04N

Claim:
1. An image projection apparatus comprising: a light source to emit light having brightness in accordance with supplied electric power; a color wheel, including a plurality of color filters disposed along a circumferential direction, to transmit the light from the light source sequentially from each of the plurality of color filters; a controller to control the electric power supplied to the light source variably in accordance with a timing at which each of the plurality of color filters is irradiated with the light from the light source; and an image forming unit to modulate intensity of the light transmitted through the color wheel so as to form an image, wherein in a first mode, the controller is configured to control electric power supplied to the light source at a timing at which a first color filter of the plurality of color filters is irradiated with the light from the light source to be a value relatively higher than electric power supplied to the light source at a timing at which a second color filter of the plurality of color filters corresponding to a color having a relatively lower visibility than a color of the first color filter is irradiated with the light from the light source, and in a second mode, the controller is configured to control the electric power supplied to the light source at the timing at which the first color filter is irradiated with the light from the light source to be a value relatively lower than the electric power supplied to the light source at the timing at which the second color filter is irradiated with the light from the light source, wherein the second color filter includes a red color filter, a blue color filter, and a magenta color filter, and wherein an angle sum of a central angle of the red color filter having a fan-like shape, a central angle of the blue color filter having a fan-like shape, and a central angle of the magenta color filter having a fan-like shape is equal to or larger than 180°.