PROBLEM TO BE SOLVED: To provide a medical lighting system, which changes an illumination distribution in lighting and which also corresponds to the various situations of an surgery.SOLUTION: The lighting device includes lighting parts 2 which include light sources 12, reflection mirrors 14 arranged to be opposed to the irradiation directions of the light sources 12 and having curved surfaces to be recessed toward the light sources 12, and mobile parts for changing intervals between the light sources 12 and the reflection mirrors 14, and are configured to allow light emitted from the light sources 12 to be reflected against the reflection mirrors 14 and to be emitted to an object. The illumination distribution in lighting by the lighting parts 2 is changed by change actions in intervals between the light sources 12 and the reflection mirrors 14 by the mobile parts.COPYRIGHT: (C)2012,JPO&INPIT【課題】照明の照度分布を変化させることができ、手術の様々な状況に対応することができる医療用照明装置を提供する。【解決手段】光源12と、光源12の照射方向に対向して設けられ、光源12に向かって凹状の曲面を有する反射鏡14と、光源12と反射鏡14との間隔を変更させる可動部とを有し、光源12から放射された光を反射鏡14で反射させて対象物側に射出するように構成された照明部2を備え、可動部による光源12と反射鏡14との間隔の変更作用により、該照明部2による照明の照度分布を変更させるように構成されている。【選択図】図1