Photoreflector (1) having a light emitting element (12) and a light receiving element (13) mounted on a substrate (11), a translucent resin (15) for sealing each of these elements, and a light shielding resin (2) Or a translucent cover material (20) arranged to face the light receiving / emitting part of the photoreflector (1), and between the light emitting element (12) and the light receiving element (13). A light shielding wall (2a) was formed from the light shielding resin (2), and a ridge (2b) was formed which was connected to the light shielding wall (2a) and narrowed the light emitting surface above the light emitting element (12).基板（１１）上に実装された発光素子（１２）及び受光素子（１３）、これらの素子を各々封止する透光性樹脂（１５）、並びに遮光性樹脂（２）を有するフォトリフレクタ（１）と、あるいはさらにフォトリフレクタ（１）の受発光部に面して配置された透光性のカバー材（２０）と、を備え、発光素子（１２）と受光素子（１３）との間に遮光性樹脂（２）で遮光壁（２ａ）を形成するとともに、遮光壁（２ａ）に連結し発光素子（１２）上方の発光面を狭窄する庇（２ｂ）を形成した。
