US 12,124,215 B2
Image output device
Kazuyoshi Hirose, Hamamatsu (JP); Yoshitaka Kurosaka, Hamamatsu (JP); and Yuu Takiguchi, Hamamatsu (JP)
Assigned to HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
Filed by HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
Filed on Jun. 15, 2021, as Appl. No. 17/347,633.
Claims priority of application No. 2020-104562 (JP), filed on Jun. 17, 2020.
Prior Publication US 2021/0397128 A1, Dec. 23, 2021
Int. Cl. G03H 1/04 (2006.01); G03H 1/00 (2006.01); G03H 1/26 (2006.01); H04N 5/74 (2006.01); H04N 9/31 (2006.01); H04N 13/393 (2018.01)
CPC G03H 1/041 (2013.01) [G03H 1/0005 (2013.01); G03H 1/268 (2013.01); G03H 2001/0088 (2013.01); H04N 5/7416 (2013.01); H04N 9/31 (2013.01); H04N 13/393 (2018.05)] 18 Claims
OG exemplary drawing
 
1. An image output device comprising:
a spatial light modulator including a main surface, a back surface opposing the main surface, and a plurality of pixels arranged two-dimensionally along the main surface in a space between the main surface and the back surface, the spatial light modulator being configured to reflect light emitted to the main surface and modulate a phase of the light in each of the plurality of pixels;
an image irradiation unit configured to emit a two-dimensional optical image toward the main surface; and
an address light irradiation unit configured to emit address light including a diffraction grating pattern toward the back surface, wherein
each of the plurality of pixels of the spatial light modulator is configured to change a phase modulation amount according to an intensity of the address light emitted from a side of the back surface,
the address light irradiation unit is configured to dynamically change a direction of the diffraction grating pattern on the back surface of the spatial light modulator, which is in a stationary state, and
the image irradiation unit is configured to irradiate the main surface with the two-dimensional optical image corresponding to the direction of the diffraction grating pattern.