PROBLEM TO BE SOLVED: To solve a dust problem of a holed mirror of an ophthalmologic imaging apparatus and to solve a problem of a positional relationship between an optical system and a black dot plate for preventing the reflection of an objective lens during the assembly, adjustment or maintenance work of the ophthalmologic imaging apparatus.SOLUTION: An objective lens unit 100 is configured as a lens barrel unit shaped to combine, in V-shape:, the holed mirror M3 having an opening for emitting imaging light or observation light passing through an objective lens 8, from the central opening, the holed mirror M3 being arranged inclined with respect to an optical axis of a main optical system and reflecting illumination light from an illuminating optical system, by a reflecting surface an imaging aperture 32 allowing the imaging light or observation light that has passed through the opening of the holed mirror M3, to pass through the black dot plate 30 in which black dots 31a, 31b for preventing the reflection of the illumination light on the surface of the objective lens 8 are arranged on the optical axis of the illumination light incident on the reflecting surface of the holed mirror M3 a lens barrel for storing the objective lens 8 and a lens barrel for fixing the black dot plate 30.COPYRIGHT: (C)2012,JPO&INPIT【課題】眼科撮影装置の穴あきミラーの埃の問題を回避し、かつ眼科撮影装置の組立、調整、あるいは保守作業時における対物レンズの反射を防止する黒点板と光学系の位置関係の問題を解決する。【解決手段】対物レンズ8を通過する撮影光または観察光を中央の開口から出射させる開口を有するとともに、主光学系の光軸に対して傾斜して配置され、照明光学系からの照明光を反射面で反射させる穴あきミラーM3と、穴あきミラーM3の開口を通過した撮影光または観察光を通過させる撮影絞り32と、穴あきミラーM3の反射面に入射される照明光の光軸上に照明光の対物レンズ8の表面での反射を防止する黒点31a、31bを配置する黒点板30と、対物レンズ8を収容する鏡筒と、黒点板30を固定した鏡筒をV字型に組合せた形状の鏡筒ユニットとして対物レンズユニット100を構成する。【選択図】図1
