Variable magnification optical component and ophthalmic apparatus

A variable magnification optical component, comprising:

• an optical path;
• a power changer, disposed rotatably with respect to an optical axis of the optical path, the power changer configured to be removably inserted into the optical path, wherein the power changer includes:
• a plurality of lenses for varying power, and a light beam passage hole configured not to interfere with the plurality of lenses;
• a substrate;
• a power changer assembly including the power changer;
• a condensing lens assembly including a condensing lens;
• and
• an image sensor assembly including an image sensor,
• wherein
• the power changer assembly, the condensing lens assembly, and the image sensor assembly are respectively attached to the substrate, so that the power changer assembly is positioned between the condensing lens assembly and the image sensor assembly,
• wherein
• in a first configuration of the variable magnification optical component, the power changer is inclined at a predetermined angle, such that the plurality of lenses are retracted outside the optical path, and the optical path passes through the light beam passage hole, and
• in a second configuration of the variable magnification optical component, the power changer is restored and the plurality of lenses are positioned on the optical path,
• wherein
• the substrate is formed with an assembly mounting portion corresponding to the power changer assembly, the condensing lens assembly and the image sensor assembly, being configured so that:
• the assembly mounting portion has an abutting surface for assembly-positioning, and
• the power changer assembly, the condensing lens assembly and the image sensor assembly are attached in a state of contacting the abutting surface of the corresponding assembly mounting portion, so as to position the power changer assembly, the condensing lens assembly and the image sensor assembly.