Provided is a high-resolution, small and lightweight endoscope apparatus. An endoscope apparatus 100 according to the present invention is inserted in a body cavity and has an insertion unit 110 that guides light from a subject, an illumination device 120 that is attached to the insertion unit 110 and illuminates the subject, and is arranged in a matrix. It has an 8K level pixel or more, and has an imaging device that receives reflected light from the subject guided by the insertion unit 110 and outputs an imaging signal of the subject, and the insertion unit 110 and the illumination device 120 can be attached. And an imaging device 130 that can be gripped and transported by hand. The imaging device 130 has a cross-sectional area perpendicular to the optical axis of the mount unit 135 containing the image sensor 131 of the gripping unit 136 that is gripped and transported by hand. It is equal to or larger than the sectional area perpendicular to the optical axis.高解像度で小型軽量の内視鏡装置を提供する。本発明に係る内視鏡装置１００は、体腔内に挿入され、被写体からの光を導光する挿入部１１０と、挿入部１１０に装着され、被写体を照明する照明装置１２０と、マトリクス状に配置された８Ｋレベル以上の画素を備え、挿入部１１０により導光された被写体からの反射光を受光し、被写体の撮像信号を出力する撮像素子を有し、挿入部１１０と照明装置１２０を取り付け可能であり、人手で把持・運搬可能な撮像装置とを備え、撮像装置１３０は、撮像素子１３１を内蔵するマウント部１３５の光軸に垂直な断面積が、人手で把持・運搬する把持部１３６の光軸に垂直な断面積に比して等しい又は大きい。
