US 12,292,615 B2
Lens unit, imaging device, and mobile object
Naoto Ohara, Yokohama (JP); Michiaki Hiraoka, Yokohama (JP); Akihiko Hiraishi, Tokyo (JP); Hiroto Yahagi, Yokohama (JP); and Keiichi Nagoshi, Yokohama (JP)
Assigned to KYOCERA Corporation, Kyoto (JP)
Appl. No. 17/754,637
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed Oct. 9, 2020, PCT No. PCT/JP2020/038285
§ 371(c)(1), (2) Date Apr. 7, 2022,
PCT Pub. No. WO2021/075372, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 2019-189728 (JP), filed on Oct. 16, 2019.
Prior Publication US 2022/0390704 A1, Dec. 8, 2022
Int. Cl. G02B 7/02 (2021.01); H04N 23/55 (2023.01)
CPC G02B 7/021 (2013.01) [H04N 23/55 (2023.01)] 6 Claims
OG exemplary drawing
 
1. A lens unit comprising:
a plurality of lenses arranged in an optical axis direction;
a lens barrel having an opening larger than outer diameters of the plurality of lenses and containing the plurality of lenses; and
a holding member that holds the plurality of lenses by contacting, from a side adjacent to the opening in the lens barrel, one of the plurality of lenses that is closest to the opening,
wherein each of the plurality of lenses has an object-side surface and an image-side surface which each include a flat portion that extends radially inward from an outer edge of the lens and that is perpendicular to the optical axis direction of the lens,
wherein each of the plurality of lenses is held in planar contact with a holder at the flat portion,
wherein the holding member holds the plurality of lenses by biasing the plurality of lenses in the optical axis direction,
wherein a first projecting portion that projects radially outward is formed on the outer peripheral surface of the lens barrel, and
wherein the first projecting portion is in contact with a housing with a wave washer provided therebetween when the lens unit is accommodated in the housing.