PROBLEM TO BE SOLVED: To provide an endoscope capable of sufficiently cleaning a convex observation optical system. SOLUTION: An endoscope 10 having a convex observation optical system at the tip of an insertion portion includes an air supply water supply nozzle 140 for injecting a cleaning fluid toward the observation optical system, and the air supply water supply nozzle 140. Has a plurality of outlets 141 from which the fluid exits in directions that do not intersect each other. [Selection diagram] Fig. 3【課題】凸形状の観察光学系を十分に洗浄できる内視鏡を提供する。【解決手段】挿入部の先端に凸形状の観察光学系を有する内視鏡１０において、前記観察光学系に向けて洗浄用の流体を噴射する送気送水ノズル１４０を備え、送気送水ノズル１４０は、互いに交差しない方向に前記流体が出射する複数の出射口１４１を有する。【選択図】図３
