WATER DISCHARGE DEVICE

To provide a water discharge device with a simple configuration capable of suppressing influence of light other than detection light.SOLUTION: A water discharge device comprises: a water discharge unit; a water supply passage for guiding water from a water supply source to the water discharge unit; an on-off valve for opening/closing the water supply passage; a photoelectric sensor that projects detection light, receives reflection light of the detection light, and outputs a reception signal corresponding to a light reception amount of the reflection light; and a control unit that on the basis of the reception signal, detects the existence of an object and controls opening/closing of the on-off valve depending on a result of the object detection. The photoelectric sensor includes: a light projection element for projecting the detection light; a light receiving element for receiving the reflection light; a first polarization member for allowing light having first polarization included in the detection light to transmit; and a second polarization member that cuts off light having second polarization generated via mirror reflection and allows light having third polarization differing from the second polarization to transmit, the light having the second polarization and the light having the third polarization included in the reflection light. The light receiving element has a wavelength band including a wavelength outside a wavelength band of the detection light; the second polarization member has a wavelength band including a wavelength outside the wavelength band of the light receiving element.SELECTED DRAWING: Figure 1 【課題】検出光以外の光の影響を簡単な構成で抑制できる吐水装置を提供する。【解決手段】吐水部と、給水源から吐水部に水を導く給水路と、給水路を開閉する開閉弁と、検出光を投光し、検出光の反射光を受光し、反射光の受光量に対応した受信信号を出力する光電センサと、受信信号を基に対象物の有無を検出し、対象物の検出結果に応じて開閉弁の開閉を制御する制御部と、を備え、光電センサは、検出光を投光する投光素子と、反射光を受光する受光素子と、検出光に含まれる第１偏光の光を透過させる第１偏光部材と、反射光に含まれる光のうち、鏡面反射による第２偏光の光を遮断し、第２偏光と異なる第３偏光の光を透過させる第２偏光部材と、を有し、受光素子の波長帯域は、検出光の波長帯域以外の波長も有し、第２偏光部材の波長帯域は、受光素子の波長帯域以外の波長も有することを特徴とする吐水装置である。【選択図】図１