Patent ID: 8002697

Claim:
An endoscope system, comprising: a first endoscope having a first observation optical system with a first viewing angle and a first illumination optical system; and a second endoscope having a second observation optical system with a second viewing angle wider than the first viewing angle and a second illumination optical system; a display unit that displays a first image of a body cavity obtained through the first endoscope and a second image of a body cavity obtained through the second endoscope, wherein a second illumination region of illuminating light that is emitted by the second illumination optical system and has a predetermined illuminance is wider than a first illumination region of illuminating light that is emitted by the first illumination optical system and has a predetermined illuminance, at any imaging distance that is pointed in an observation direction from a distal end of an insertion portion of each of the first endoscope and the second endoscope, so that a surrounding portion of the first image and a surrounding portion of the second image are displayed at substantially the same brightness by the display unit.