Patent ID: 11960196
Assignee: SEIKO EPSON CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 18:
19. A projector comprising:
a light source including
a first light-emitting region including a plurality of first light-emitting elements and configured to emit a first light beam, and
a second light-emitting region including a plurality of second light-emitting elements and configured to emit a second light beam having a wavelength different from a wavelength of the first light beam;
an optical modulation device configured to modulate the first light beam and the second light beam incident from the light source in accordance with image information;
a projection optical device configured to project an image formed by the optical modulation device; and
a control unit configured to control a light emission intensity of each of the plurality of first light-emitting elements and a light emission intensity of each of the plurality of second light-emitting elements, wherein
the control unit
changes a light-emitting position of the first light beam in the first light-emitting region to move a first illumination region of the first light beam on an image forming region of the optical modulation device, and
changes a light-emitting position of the second light beam in the second light-emitting region to move a second illumination region of the second light beam, in the same direction as the first illumination region, on the image forming region of the optical modulation device,

the light source further includes a third light-emitting region including a plurality of third light-emitting elements and configured to emit a third light beam having a wavelength different from the wavelengths of the first light beam and the second light beam,
the optical modulation device modulates the first light beam, the second light beam, and the third light beam incident from the light source, based on image information,
the control unit controls a light emission intensity of each of the plurality of third light-emitting elements, and changes a light-emitting position of the third light beam in the third light-emitting region to move a third illumination region of the third light beam, in the same direction as the first illumination region and the second illumination region, on the image forming region of the optical modulation device, and
the first illumination region, the second illumination region, and the third illumination region do not overlap with each other on the image forming region.