PROBLEM TO BE SOLVED: To provide an endoscope capable of quickly and easily acquiring a plurality of images of which imaging magnifications are different image by image, and also provide an endoscope system using such an endoscope.SOLUTION: An endoscope according to an embodiment of the present invention, comprises: an insertion part to be inserted into the body of a subject and an imaging unit mounted in the insertion part. The imaging unit comprises: a photographic optical system including a central optical system in a central part and an annular optical system in a periphery of the central optical system, the central optical system and the annular optical system being arranged on the same optical axis and their imaging magnifications being different from each other a directional sensor having a plurality of pixels each structured of two-dimensionally arranged photoelectric conversion elements and including a plurality of pixels for pupil-dividing and selectively receiving each of beams incident via the central optical system and the annular optical system and an image readout unit for acquiring, from the directional sensor, image signals representing a first image light-received via the central optical system and image signals representing a second image light-received via the annular optical system.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】撮影倍率が異なる複数の画像を迅速かつ容易に取得できる内視鏡、及びそのような内視鏡を用いた内視鏡システムを提供することを目的とする。【解決手段】本発明の一実施形態に係る内視鏡は、被検体の体内に挿入される挿入部と、挿入部に設けられた撮像部と、を備えた内視鏡において、撮像部は、それぞれ同一の光軸上に配置された中央部の中央光学系とその周辺部の環状光学系とからなる撮影光学系であって撮影倍率が互いに異なる撮影光学系と、2次元状に配列された光電変換素子により構成された複数の画素を有する指向性センサであって、中央光学系及び環状光学系を介して入射する光束をそれぞれ瞳分割して選択的に受光する複数の画素を含む指向性センサと、中央光学系を介して受光した第1画像を示す画像信号と環状光学系を介して受光した第2画像を示す画像信号とを指向性センサから取得する画像読み出し部と、を備える。【選択図】 図2
