Optical sensors are applied in the field of robotics, automation, installation and handling. Each design series has its own advantages and is specialized in its own field of application.
One-way optical barriers consist of a transmitter and a receiver. When the beam emitted by the transmitter receives the receiver. When a beam is interrupted, the sensor will be evaluated and the sensor will switch on or off according to the selected function.
Retro-reflective optical sensors have a transmitter and receiver in a common case. A reflector is located opposite the sensor. The transmitted beam is reflected from the reflector back to the sensor into the receiver. In the case of a beam break, the sensor is evaluated and the sensor switches on or off according to the selected function.
Diffuse sensors have a receiver and a transmitter in a common case. In the case of a diffuser, the transmitted beam reflects from the sensed object back to the sensor. In the case of return of the reflected beam, the sensor is evaluated and the sensor switches on or off according to the selected function. The sensing distance depends on the size, shape, color and surface of the subject being scanned.