LENS UNIT, IMAGING DEVICE, AND MOBILE OBJECT

• Main Authors: OHARA, Naoto, NAGOSHI, Keiichi, YAHAGI, Hiroto, HIRAOKA, Michiaki, HIRAISHI, Akihiko
• Format: Patent
• Language: English
• Published: 08.12.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

A lens unit includes a plurality of lenses arranged in an optical axis direction, a lens barrel, and a retainer. The lens barrel has an opening larger than outer diameters of the plurality of lenses and contains the plurality of lenses. The retainer 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. 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. Each of the plurality of lenses is held in planar contact with a holder at the flat portion. The retainer holds the plurality of lenses by biasing the plurality of lenses in the optical axis direction.