The customized photoelectric sensor is the key component to realize photoelectric conversion in various photoelectric detection systems. It is a device that converts optical signals (infrared, visible and ultraviolet radiation) into electrical signals. In general, a photoelectric sensor is composed of three parts: a transmitter, a receiver, and a detection circuit. 

The customized photoelectric sensor can be used to detect non-electrical quantities that directly cause changes in light quantity, such as light intensity, illuminance, radiation measurement and gas composition analysis. The customized photoelectric sensor can also be used to detect other non-electrical quantities that can be converted into changes in the amount of light, such as part diameter, surface roughness, displacement, vibration, speed, and identification of the shape and working status of objects.

The transmitter of the customized photoelectric sensor is aimed at the target and emits a light beam, and the emitted light beam generally comes from a semiconductor light source, a light emitting diode (LED), a laser diode and an infrared emitting diode. The beam is fired uninterrupted, or the pulse width is changed. The receiver of the photoelectric sensor is composed of photodiode, phototransistor and photocell. In front of the receiver, optical elements such as lenses and apertures are installed. Behind it is the detection circuit of the customized photoelectric sensor, which can filter out the valid signal and apply the signal.