PROBLEM TO BE SOLVED: To enable a signal cable or an electronic component for an imaging device to be appropriately disposed in a space limited in a tip of an insertion part of an endoscope.SOLUTION: On a substrate surface of a second circuit substrate 52 which is horizontally extended from a first circuit substrate 51, there are provided: a first land group 71 in which lands are aligned in a width direction in an order of width thickness from thicker land； a second land group 72 in which lands are aligned in a width direction in an order of width thickness from thinner land at a rear side of the first land group 71； a first signal cable group 61 solder-connected to a plurality of lands in the first land group 71 in an order from larger cable outer diameter； and a second signal cable group 62 solder-connected to a plurality of lands in the second land group 72 in an order from smaller cable outer diameter.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】内視鏡挿入部先端部内の限られた空間に、撮像素子に係る信号ケーブルまたは電子部品等を適切に配置可能とする。【解決手段】第１回路基板５１から水平に延設された第２回路基板５２の基板表面上において、ランド幅の太さが太い順に幅方向に列設された第１ランド群７１と、第１ランド群７１の後列においてランド幅の太さが細い順に幅方向に列設された第２ランド群７２と、ケーブル外径が大きい順に前記第１ランド群７１の複数のランドに半田接続された第１信号ケーブル群６１と、ケーブル外径が小さい順に前記第２ランド群７２の複数のランドに半田接続された第２信号ケーブル群６２と、を有する。【選択図】図２
