US 12,356,059 B2
Optical member, lens device, and imaging apparatus
Yuya Hirakawa, Saitama (JP); Kazuyoshi Okada, Saitama (JP); Yasunobu Kishine, Saitama (JP); and Atsushi Kawanago, Saitama (JP)
Assigned to FUJIFILM, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Apr. 16, 2023, as Appl. No. 18/301,245.
Application 18/301,245 is a continuation of application No. PCT/JP2021/039256, filed on Oct. 25, 2021.
Claims priority of application No. 2020-182465 (JP), filed on Oct. 30, 2020.
Prior Publication US 2023/0319385 A1, Oct. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 23/55 (2023.01); G02B 5/20 (2006.01); G02B 5/30 (2006.01); H10F 39/00 (2025.01)
CPC H04N 23/55 (2023.01) [G02B 5/205 (2013.01); G02B 5/3016 (2013.01); H10F 39/8063 (2025.01)] 17 Claims
OG exemplary drawing
 
1. A lens device comprising:
an imaging optical system;
a first polarizing filter that polarizes at least a part of rays transmitted through the imaging optical system; and
a filter unit that is disposed closer to an image side than the first polarizing filter, is disposed at a pupil position of the imaging optical system or near the pupil position, and includes a plurality of aperture regions transmitting the rays of the imaging optical system and including a first aperture region and a second aperture region, a plurality of wavelength selective filters disposed in the first aperture region and the second aperture region and transmitting pieces of light of which at least a part of wavelength ranges are different from each other, and a second polarizing filter including a plurality of polarizing filters disposed in the first aperture region and the second aperture region and having polarization directions different from each other.