MICROSCOPE LENS BARREL

PROBLEM TO BE SOLVED: To provide a microscope lens barrel in which a reticle anti-rotation mechanism can easily be mounted and dismounted, and situation attended with adjustment of an optical system can be obviated. SOLUTION: The microscope lens barrel includes: a lens barrel section in which a fixed tube 2 is fixed to a lens barrel body 1, one of two holding tubes 6, 7 arranged parallel to and equidistant from a center axis 2a of the fixed tube 2 is provided to be movable without changing a distance from the center axis 2a, and an optical system is placed to maintain directions of optical axes so that two optical paths split are always aligned with center axes of the holding tubes 6 and 7; and a reticle anti-rotation unit 20 in which a reticle plate is placed so that a plane on which a reticle is provided is perpendicular to the center axis 7a of the holding tube 7 and which is removably mounted to the fixed tube 2 and the movable holding tube 7 in a state where a holding mechanism holding a direction of the reticle plate on the center axis 7a to the microscope body is integrated. COPYRIGHT: (C)2008,JPO&INPIT