Photoelectic Sensor

A photoelectric sensor changes the intensity of light into electrical signals using a photoelectric component.
It consists of three main parts:
Transmitter: Emits a light ray toward the object. The emitted light can be from a semiconductor source like an LED, a laser diode, or an IR diode.
Receiver: Detects the light that reaches it. Common receiver components include photodiodes, photocells, and phototransistors.
Detection Circuit: Filters out the effective signal and triggers appropriate actions based on the detected change.
When the emitted light is reflected or interrupted by the sensing object, it alters the light reaching the receiver.
The receiver converts this change into an electrical signal