Lens unit, imaging device, and moving object

• Main Authors: YAHAGI HIROTO, HIRAISHI, AKIHIKO, HIRAOKA MICHIAKI, NAGOSHI KEIICHI, OHARA NAOTO
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2022
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

The lens unit has: a plurality of lenses arranged in the optical axis direction; a lens barrel; and a holder. The lens barrel has an opening larger than an outer diameter of the plurality of lenses, and accommodates the plurality of lenses. The holder is in contact with the lens closest to the opening side of the plurality of lenses from the opening side of the lens barrel to hold the plurality of lenses. On the object-side surface and the image-side surface of each of the plurality of lenses, a planar portion extending radially inward from the outer edge of the lens and perpendicular to the optical axis direction of the lens is formed. Each of the plurality of lenses is held by being in planar contact with the holding body at the planar portion. The holder holds the plurality of lenses by urging the plurality of lenses in the optical axis direction. 透镜单元具有：沿光轴方向排列的多个透镜；镜筒；以及保持器。镜筒具有大于多个透镜的外径的开口，并容纳多个透镜。保持器从镜筒的开口侧与多个透镜中的最靠开口侧的透镜抵接，来保持多个透镜。在多个透镜各自的物体侧的面以及像侧的面上，形成有从透镜的外缘向径向内侧延伸并与透镜的光轴方向垂直的平面部。多个透镜分别在平面部与保持体进行平面