PROBLEM TO BE SOLVED: To improve image quality while taking miniaturization into consideration.SOLUTION: An imaging device includes: a radiating section for radiating characteristic light having a property of being absorbed into a specified tissue inside a living body to a mounting section where a part of a living body should be mounted among the surfaces of a housing for storing an electronic circuit a shielding section with an entry port where characteristic light obtained from the part of the living body mounted on the mounting section should enter and for partitioning a space from the entry port to an opening formed on the housing as a path of the characteristic light a moving mechanism for moving the shielding section to a position where the opening is released from the shielding section and an imaging element, installed inside the housing, for forming an image of the specified tissue or an object except the specified tissue.COPYRIGHT: (C)2011,JPO&INPIT【課題】小型化を考慮しながら画質を向上できるようにする。【解決手段】電子回路が収納される筺体の表面のうち、生体部位を載置すべき載置部に対して、生体内方における特定の組織に吸収される性質を有する特性光を照射する照射部と、載置部に載置される生体部位から得られる特性光が進入すべき進入口を有し、該進入口から、筐体に設けられる開口までの空間を特性光の経路として仕切る遮蔽部と、遮蔽部を、開口が遮蔽部から開放される位置にまで移動させる移動機構と、筐体の内部に設けられ、特定の組織又は特定の組織以外の被写体が結像される撮像素子とを有する。【選択図】図9