| 摘要 |
A lens barrel for a microscope comprises an eyepiece barrel provided for rotation relative to a barrel body, a reflecting mirror holder for holding on the rotational center axis of the eyepiece barrel a reflecting mirror having a reflecting surface for reflecting light from an objective lens, and rotating the reflecting mirror about the rotational center axis, first and second circumferential surfaces having a ratio of outer diameters of approximately 1 to 2 and formed on the eyepiece barrel and the reflecting mirror holder, respectively, about the rotational center axis, a pulley rotatably supported on the barrel body, and a connecting member for connecting the first circumferential surface of the eyepiece barrel and the second circumferential surface of the reflecting mirror holder together through the pulley.
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