Patent ID: 8777845

Claim:
An endoscope, comprising: a first flat surface formed at a distal end portion of an insertion part to be inserted into a subject, and is orthogonal to an axial direction of the insertion part; an observation window allowing image light of the subject to be taken therethrough, provided at the distal end portion with a surface of the observation window as a light incidence plane protruding from the first flat surface in a predetermined height; a pair of illumination windows provided at the distal end portion to irradiate a subject with illumination light; a fluid jetting nozzle arranged at the first flat surface to jet a fluid toward the observation window; an inclined surface formed around the observation window and arranged at a position that faces the fluid jetting nozzle; and a fluid guide surface formed continuously with the inclined surface to guide a fluid to the illumination window, wherein the pair of illumination windows are positioned on the first flat surface and in a side of an intersection part of the first flat surface and the fluid guide surface, such that a shortest distance between a center of each of the pair of illumination windows and the intersection part is less than a shortest distance between the center of said each of the pair of illumination windows and a perimeter of the first flat surface.