US 12,284,466 B2
Projection device, control method, and recording medium
Koya Takata, Tokyo (JP); Hisashi Mizumoto, Tokyo (JP); and Fujio Okumura, Kanagawa (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 18/282,848
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Feb. 10, 2022, PCT No. PCT/JP2022/005235
§ 371(c)(1), (2) Date Sep. 19, 2023,
PCT Pub. No. WO2022/201938, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 2021-047562 (JP), filed on Mar. 22, 2021.
Prior Publication US 2024/0171711 A1, May 23, 2024
Int. Cl. H04N 9/31 (2006.01)
CPC H04N 9/3155 (2013.01) [H04N 9/3188 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A projection device comprising:
a light source configured to emit parallel light;
a spatial light modulator including a modulation part that modulates a phase of the parallel light emitted from the light source;
a controller including
a memory storing instructions, and
a processor connected to the memory and configured to execute the instructions to
tile the modulation part with tiles of at least two resolutions in which a phase image related to an image displayed by projection light being set,
set the phase image to each of the plurality of tiles that are tiled, and
cause the light source to radiate the parallel light toward the modulation part in which the phase image is set; and
a projection optical system configured to project light modulated by the spatial light modulator as the projection light.