Patent ID: 9618767
Date: 2017-04-11
CPC Classifications: G02B,H04N

Claim:
1. A projector comprising: an illumination device adapted to emit a plurality of light beams, which includes a first light beam and a second light beam, as illumination light; a light modulation device adapted to modulate the illumination light to thereby generate image light; and a projection optical system having an exit pupil and adapted to project the image light, which is emitted from the light modulation device, on a projection target surface, the image light being formed of a plurality of diffracted light beams and a plurality of zero-order light beams, the plurality of diffracted light beams and the plurality of zero-order light beams being generated by the illumination light and the light modulation device, and the projection optical system receiving the plurality of diffracted light beams and the plurality of zero-order light beams generated by the illumination light and the light modulation device, and in the exit pupil, an illuminance peak due to the zero-order light beam corresponding to the first light beam being disposed at a position different from a position of an illuminance peak due to the diffracted light beam corresponding to the second light beam.