公开(公告)号：US20240111135A1

公开(公告)日：2024-04-04

申请号：US18457349

申请日：2023-08-29

Applicant: TOPCON CORPORATION

Inventor： Hitoshi SHIMIZU ,  Dai SUZUKI

IPC: G02B15/04

CPC classification number: G02B15/04

Abstract: A variable magnification optical component and an ophthalmic apparatus having a simpler mechanism and requiring a small space are provided. The variable magnification optical component includes an optical path, and a power changer, disposed rotatably with respect to an optical axis of the optical path. The power changer is configured to be removably inserted into the optical path, in which the power changer includes: multiple lenses for varying power and a light beam passage hole configured not to interfere with the lenses. In a first configuration of the variable magnification optical component, the power changer is inclined at a predetermined angle, such that the lenses are retracted outside the optical path, and the optical path passes through the light beam passage hole. In a second configuration of the variable magnification optical component, the power changer is restored and the lenses are positioned on the optical path.