Photoelectric Retro-Reflective Sensor

A photoelectric retro-reflective sensor is a type of sensor that uses light to detect the presence or absence of an object. It works by emitting a beam of light and then detecting the reflected light from the object.

The sensor consists of two main components: a light source (LED) and a photodetector (phototransistor). The LED emits a beam of light that is directed towards a retro-reflective target. A retro-reflective target is a surface that reflects light back to its source. When the object enters the path of the reflected light, the photodetector detects the change in light intensity and triggers an output signal.

• Advantages:
• Simple design and easy to use.
• Cost-effective.
• Can detect small objects.
• Robust and reliable.

Photoelectric retro-reflective sensors are commonly used in a variety of applications, such as:

• Presence detection
• Level sensing
• Counting objects
• Position sensing