PHOTOELECTRONIC SENSOR

To provide a photoelectronic sensor that effectively shields a substrate mounting surface related to sensing processing from an electromagnetic wave with a simple configuration.SOLUTION: A photoelectronic sensor comprises: a housing that has an opening; a first substrate being a hard substrate that is arranged along a boundary surface that divides an internal space of the housing into a first space on the opening side and a second space on the other side; a light receiving element that receives detection light from an optical fiber for light reception; a second substrate that has mounted thereon an amplifier element that amplifies a light receiving signal from the light receiving element and is accommodated in the second space to be orthogonal to the first substrate; and an electromagnetic wave shield plate that covers a first mounting surface and a second mounting surface of the second substrate across a bottom side edge on the opposite side of an opening side edge opposite to the first substrate, and is formed by bending a single plate. The electromagnetic wave shield plate has an extension part that extends from a first surface covering the first mounting surface toward the first mounting surface, and a leading end of the extension part is connected with a GND land provided on the first mounting surface.SELECTED DRAWING: Figure 9 【課題】センシング処理に関わる基板実装面を簡単な構成で効果的に電磁波遮蔽した光電センサを提供する。【解決手段】光電センサは、開口部を有する筐体と、筐体の内部空間を開口部側の第１空間と反対側の第２空間とに分ける境界面に沿って配置されたハード基板である第１基板と、受光用光ファイバから検出光を受光する受光素子と、受光素子の受光信号を増幅する増幅素子が実装され、第１基板と直交するように第２空間に収容された第２基板と、第２基板の第１実装面と第２実装面とを、第１基板側に対向する開口側縁とは反対側の底部側縁を跨いで覆う、単板を曲げて形成された電磁波遮蔽板とを備え、電磁波遮蔽板は、第１実装面を覆う第１面から第１実装面へ向かって延出する延出部を有し、延出部の先端部は第１実装面に設けられたＧＮＤランドに接続されている。【選択図】図９