US 11,733,100 B2
Polarization imaging system
Masashi Miyata, Musashino (JP); Mitsumasa Nakajima, Musashino (JP); and Toshikazu Hashimoto, Musashino (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/271,162
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Sep. 17, 2019, PCT No. PCT/JP2019/036314
§ 371(c)(1), (2) Date Feb. 24, 2021,
PCT Pub. No. WO2020/066738, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 2018-180793 (JP), filed on Sep. 26, 2018.
Prior Publication US 2021/0333151 A1, Oct. 28, 2021
Int. Cl. G01J 4/04 (2006.01); G02B 5/30 (2006.01); G01J 4/00 (2006.01)
CPC G01J 4/04 (2013.01) [G02B 5/30 (2013.01); G01J 2004/002 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A polarization imaging image-pickup system generating a polarization image of an imaging object, comprising:
an image-pickup unit array that includes a plurality of image-pickup units arranged two-dimensionally, wherein the image-pickup units each comprise:
one wavefront control element that includes a plurality of microscopic structures; and
a pixel array that is arranged so as to face the wavefront control element, and includes a plurality of pixels that are associated with the wavefront control element and are two-dimensionally arranged, and
light from an imaging object is spatially separated by the one wavefront control element into first polarized light, and a second polarized light that is in a direction orthogonal to the first polarized light or has a rotation direction opposite to a rotation direction of the first polarized light, the first polarized light is collected at a first collection position on the pixel array, and the second polarized light is collected at a second collection position on the pixel array.