The endoscope 10 includes a first fiber 61 of the light guide fiber 60 having a first plane 61f for emitting illumination light formed tilted at an angle less than 90 degrees to the longitudinal axis 61a to the distal end portion, has a through hole 71 which the tip portion 61p of the first fiber 61 is fixed, the distal end surface 73 to the central axis 71a of the first surface 73a and the through-hole 71 which can be a first plane 61f same plane a pipe 70 having a second surface 73b is a plane perpendicular, blind hole 34 in which an end portion of the distal end of a pipe 70 is disposed is formed, at least the second surface 73b of the pipe 70 on the bottom side of the blind hole 34 abutment surface 38F2 part abuts, and a distal end constituent member 30 having a recess 37 which constitutes the illumination lens system for obtaining the light distribution a predetermined positioned distally from the contact surface 38F2, the equipped.内視鏡10は、長手軸61aに対して90度未満の角度で傾いて形成された照明光を出射する第1の平面61fを先端部に設けたライトガイドファイバ60の第1ファイバ61と、第1ファイバ61の先端部分61pが固設される貫通孔71を有し、先端面73には第1の平面61fと同一な平面に成り得る第1面73a及び貫通孔71の中心軸71aに直交する平面である第2面73bを有するパイプ70と、パイプ70の先端側の端部が配置される止り穴34が形成され、止り穴34の底面側にパイプ70の第2面73bの少なくとも一部が当接する当接面38f2、および、当接面38f2より先端側に位置して予め定めた配光を得るための照射レンズ系を構成する凹部37を設けた先端構成部材30と、を具備する。
