To provide an endoscope apparatus capable of generating an image enlarging the depth of field irrespective of the type of an endoscope to be connected.A first endoscope having a first observation optical system and a second observation optical system different from the first observation optical system are provided, and an exit pupil diameter of the first endoscope A second endoscope having a diameter larger than an exit pupil diameter, an aperture stop to which any one of the first and second endoscopes is connected and allowing light from the connected endoscope to pass therethrough, and an aperture An image pickup apparatus having an image pickup section for receiving light passing through a diaphragm and converting it into an electric signal and an image processing apparatus for generating an image by using the electric signal generated by the image pickup apparatus, wherein the minimum diaphragm diameter Is larger than the exit pupil diameter of the first endoscope.(FIG.【課題】接続される内視鏡の種別によらず、被写界深度を拡大した画像を生成することができる内視鏡装置を提供すること。【解決手段】第1の観察光学系を有する第1の内視鏡と、第1の観察光学系とは異なる第2の観察光学系を有し、射出瞳径が第1の内視鏡の射出瞳径より大きい第2の内視鏡と、第1および第2の内視鏡のうちのいずれかが接続され、該接続された内視鏡からの光を通過させる開口絞り、及び、開口絞りを通過した光を受光して電気信号に変換する撮像部を有する撮像装置と、撮像装置が生成した電気信号を用いて画像を生成する画像処理装置と、を備え、開口絞りの最小絞り径が、第1の内視鏡の射出瞳径より大きい。【選択図】図2
