US 11,720,012 B2
Optical system
Toshifumi Yasui, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/426,700
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Jan. 22, 2020, PCT No. PCT/JP2020/002135
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2020/162179, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. JP2019-020864 (JP), filed on Feb. 7, 2019.
Prior Publication US 2022/0100074 A1, Mar. 31, 2022
Int. Cl. G03B 33/12 (2006.01); G03B 21/20 (2006.01)
CPC G03B 33/12 (2013.01) [G03B 21/204 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical system, comprising:
a first optical system that includes a first optical element having a plurality of divided regions having mutually different polarization actions, the first optical element being disposed at a first pupil position in the optical system, wherein the first optical element generates illumination light including a plurality of color light beams in mutually different wavelength bands;
a plurality of light valves that each modulates at least one color light beam of the plurality of color light beams included in the illumination light; and
a second optical system that includes a second optical element having a plurality of divided regions having mutually different polarization actions, the second optical element being disposed at a second pupil position conjugate to the first pupil position, and on which the plurality of color light beams modulated by the plurality of light valves is incident,
wherein each of the plurality of divided regions in the first optical element and each of the plurality of divided regions in the second optical element are conjugate to each other.