公开(公告)号：US20140247506A1

公开(公告)日：2014-09-04

申请号：US14274005

申请日：2014-05-09

Applicant: FUJIFILM Corporation

Inventor： Tetsuya ORI

IPC: G02B13/02 ,  G02B13/18

CPC classification number: G02B13/02 ,  G02B13/18

Abstract: A first lens group having positive refractive power and a second lens group are arranged in this order from an object side, and only the first lens group moves in the optical axis direction while focusing. The first lens group substantially consists of a positive 1-1 lens, a positive 1-2 lens, a positive 1-3 lens, a negative 1-4 lens, an aperture stop, a negative 1-5 lens, a positive 1-6 lens, and a positive 1-7 lens. The 1-3 lens and the 1-4 lens are cemented to each other, and the 1-5 lens and the 1-6 lens are cemented to each other. The second lens group substantially consists of a negative 2-1 lens and a positive 2-2 lens. Only the first lens group moves in the optical axis direction while focusing.

Abstract translation: 具有正屈光力的第一透镜组和第二透镜组从物体侧依次布置，并且仅第一透镜组在聚焦的同时沿光轴方向移动。 第一透镜组基本上由正1-1透镜，正1-2透镜，正1-3透镜，负1-4透镜，孔径光阑，负1-5透镜，正1-透镜组成， 6透镜和正1-7透镜。 1-3透镜和1-4透镜彼此粘合，1-5透镜和1-6透镜彼此粘合。 第二透镜组基本上由负2-1透镜和正2-2透镜组成。 聚焦时，只有第一个镜头组在光轴方向移动。