Provided is an endoscope that realizes a reduction in diameter of an insertion portion and high image quality. The endoscope is arranged in parallel with the imaging unit disposed at the distal end portion of the insertion portion to be inserted into the body of the subject, and the imaging unit at the distal end portion, and substantially parallel to the axial direction of the insertion portion. The imaging unit includes a solid-state imaging device having a light receiving portion, and at least a part of the imaging unit is disposed closer to the proximal side of the endoscope than the solid-state imaging device, and the solid-state imaging device A hard board electrically connected to the first board, the hard board having a first surface whose longitudinal direction extends in the axial direction of the tip portion and a second surface facing the first surface substantially in parallel. In a cross section perpendicular to the longitudinal direction, the width of the first surface is longer than the width of the second surface, and the hard substrate includes the first surface and the second surface. A third surface or a fourth surface extending in the axial direction of the tip portion, Characterized by built product facing.挿入部の細径化を実現するとともに、高画質化を実現する内視鏡を提供する。内視鏡は、被検体の体内に挿入される挿入部の先端部に配設される撮像ユニットと、前記先端部で前記撮像ユニットと並設されるとともに、前記挿入部の軸方向と略平行に延設された内蔵物とを備え、前記撮像ユニットは、受光部を有する固体撮像素子と、少なくとも一部が前記固体撮像素子より前記内視鏡の基端側に配置され、前記固体撮像素子と電気的に接続される硬質基板と、を有し、前記硬質基板は、長手方向が前記先端部の軸方向に延びる第１の面と、前記第１の面と略平行に対向する第２の面とを有し、前記長手方向と直交する断面において、前記第１の面の幅は前記第２の面の幅より長く、前記硬質基板は、前記第１の面および前記第２の面と異なる面であって、前記先端部の軸方向に延びる第３の面または第４の面が、前記内蔵物と対向することを特徴とする。
