US 12,413,683 B2
Illumination apparatus, illumination method, and projector apparatus
Hiroyuki Tahara, Kanagawa (JP)
Assigned to Sony Group Corporation, Tokyo (JP)
Appl. No. 17/924,199
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Mar. 25, 2021, PCT No. PCT/JP2021/012611
§ 371(c)(1), (2) Date Nov. 9, 2022,
PCT Pub. No. WO2021/235085, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 2020-086878 (JP), filed on May 18, 2020.
Prior Publication US 2023/0319228 A1, Oct. 5, 2023
Int. Cl. H04N 5/74 (2006.01)
CPC H04N 5/7441 (2013.01) [H04N 5/7458 (2013.01); H04N 5/7475 (2013.01); H04N 2005/745 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An illumination apparatus, comprising:
a light source section that has a light emitting element;
a phase modulation section that performs spatial light phase modulation on incident light from the light source section; and
a control section that controls the phase modulation section in such a manner that a plurality of domains formed by dividing a phase modulation plane of the phase modulation section reproduces a light intensity distribution based on a common phase distribution determined on a basis of a Freeform method in a common region on a projection plane, wherein the control section uses, as the common phase distribution, a phase distribution that is obtained by performing a scaling process according to sizes of the domains on a phase distribution calculated by the Freeform method.