PROBLEM TO BE SOLVED: To provide a magnifying endoscope which makes a diameter of a tip of a flexible pile small and which can accurately detect a lens position.SOLUTION: A magnifying endoscope includes a flexible pipe of an insertion part, which has a coil 52 concentrically provided at a tip thereof. The tip of the flexible pipe comprises a lens 48 which is displaced along the axis of the coil 52 to perform a zooming operation. The tip of the flexible pipe also comprises a magnet 38 which displaces the inside of the coil by interlocking with the lens 48. An operation portion of the magnifying endoscope comprises a pulse detection portion which detects a pulse generated in the coil 52 by displacement of the lens 48.COPYRIGHT: (C)2013,JPO&INPIT【課題】可撓管先端部の径が小さく、かつ、レンズの位置を正確に検出することが可能な拡大内視鏡を提供する。【解決手段】拡大内視鏡は、先端部にコイル52が同心的に設けられた挿入部可撓管を備える。可撓管の先端部は、コイル52の軸心に沿って変位し、ズーミング動作するレンズ48を備える。可撓管の先端部は、レンズ48に連動してコイルの内側を変位する磁石38を備える。拡大内視鏡の操作部は、レンズ48が変位することによりコイル52に発生するパルスを検出するパルス検出部を備える。【選択図】図3
