US 12,320,741 B2
Polarization imaging system and polarization imaging method
Piergiorgio Sartor, Stuttgart (DE); Alexander Gatto, Stuttgart (DE); Zoltan Facius, Stuttgart (DE); Matthias Schinzel, Stuttgart (DE); and Markus Kamm, Stuttgart (DE)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/786,545
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Dec. 22, 2020, PCT No. PCT/EP2020/087620
§ 371(c)(1), (2) Date Jun. 17, 2022,
PCT Pub. No. WO2021/130222, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 19219840 (EP), filed on Dec. 27, 2019.
Prior Publication US 2023/0034139 A1, Feb. 2, 2023
Int. Cl. G01J 3/447 (2006.01); G01J 4/04 (2006.01); G01N 21/21 (2006.01); G01B 11/06 (2006.01); G01J 4/00 (2006.01); G06T 3/4015 (2024.01)
CPC G01N 21/211 (2013.01) [G01J 3/447 (2013.01); G01J 4/04 (2013.01); G01B 11/0625 (2013.01); G01B 11/065 (2013.01); G01J 4/00 (2013.01); G01N 2021/213 (2013.01); G06T 3/4015 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A polarization imaging system comprising:
an imaging portion having a color channel element of a first color type and a color channel element of a second color type;
a light polarization portion configured to:
in an optical path before an object:
receive light of the first color type and light of the second color type; and
as a first polarization, individually provide a first light polarization of a first polarization type for the light of the first color type and a second light polarization of the first polarization type for the light of the second color type, and
in an optical path after the object:
as a second polarization, convert a second polarization type into the first polarization type, whereby the second polarization type converted into the first polarization type is detectable in the imaging portion; and
control circuitry configured to control the second polarization based upon the first polarization.