A photoelectric sensor, or photoeye, is a device used to detect the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric receiver. They are used extensively in industrial manufacturing. There are three different functional types: opposed (a.k.a. through beam), retroreflective, and proximity-sensing (a.k.a. diffused).An opposed (through beam) arrangement consists of a receiver located within the line-of-sight of the transmitter. In this mode, an object is detected when the light beam is blocked from getting to the receiver from the transmitter.A retroreflective arrangement places the transmitter and receiver at the same location and uses a reflector to bounce the light beam back from the transmitter to the receiver. An object is sensed when the beam is interrupted and fails to reach the receiver.A proximity-sensing (diffused) arrangement is one in which the transmitted radiation must reflect off the object in order to reach the receiver. In this mode, an object is detected when the receiver sees the transmitted source rather than when it fails to see it.Some photoeyes have two different operational types, light operate and dark operate. Light operate photoeyes become operational when the receiver "receives" the transmitter signal. Dark operate photoeyes become operational when the receiver "does not receive" the transmitter signal.The detecting range of a photoelectric sensor is its "field of view", or the maximum distance the sensor can retrieve information from, minus the minimum distance. A minimum detectable object is the smallest object the sensor can detect. More accurate sensors can often have mimimum detectable objects of minuscule size.Type
Photo micro sensors - Amplifier built-in type - Universal voltage type - U-shaped type -Cylindrical type
Autonics series
BJ3M Series - BS5 Series - BJ Series - BJN Series - BA2M-DDT BY Series- BYD Series - BPS Series - BM Series - BMS Series - BX Series - BEN Series - BUP Series - BR Series