The objective lens 118 is formed at the most protruding position in the distal direction at the distal end portion 15 of the insertion portion 11 of the endoscope 2 and then the position of the top surface of the head vertex portion 34 b of the air / And the two (first and second) illumination sections 29a and 29b were formed at positions protruding in the distal direction.内視鏡2の挿入部11の先端部15において、対物レンズ118を先端方向に最も突出した位置に形成し、次に、送気送水ノズル34の頭頂部34bの頭頂面の位置を先端方向に突出した位置に形成し、続いて、二つ(第1,第2)の照明部29a,29bを先端方向に突出した位置に形成した。
