常用的放射式光电传感器,利用物体对光电开关发射出的红外线反射回去,由光电开关接收,从而判断是否有物体存在。
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Reflective Optical Sensor with Transistor Output TCRT5000L Vishay Telefunken Description The TCRT5000L has a compact construction where the emittinglight source and the detector are arranged in the same direction to sense the presence of an ob ject by using the reflective IR beam from the object The operating wavelength is 950 mm The detector consists of a phototransistor Applications D Position sensor for shaft encoder D Detection of reflective material such as paper IBM cards magnetic tapes ......
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