Date de Parution: 2016-01-05
Omron's photoelectric sensor. Non-amplified optoelectronic microsensors, often called photo interrupters or light switches, are infrared emitter / detector pairs housed in a compact, single housing designed to detect the presence or absence of an object. There are hundreds of variations on basic opto-interrupters, so designers can focus on the type, body shape, and connection style that best suits their individual application.
A transmissive photoelectric microsensor includes an emitter and a detector facing each other. When an object is located between the emitter and the detector, the beam is interrupted, causing the detector to respond to this change in light energy.
Reflective photoelectric microsensors include externally facing emitters and detectors. When an object enters the range, the light beam emitted by the emitter will be reflected away from the object and returned to the detector, so that the detector responds to this change in light energy.
Omron uses a silicon package structure for the LEDs inside its photoelectric microsensor. This reduces any mechanical stress applied to the LED, thereby enhancing the physical integrity of the LED chip. The company says the end result is that LEDs can maintain higher brightness for longer periods of time.
