OPB800L55

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Optical Sensors - Photointerrupters - Slot Type - Transistor Output

The OPB800L55 is an optical sensor that belongs to the family of photointerrupters. It is a slot type consisting of an infrared light emitting diode and a phototransistor integrated in a single unit. This unit is designed to produce an electrical output signal when a beam of light passing through the emitter is broken by an object. The design allows for self-sensing, requiring only a single source of light, and a single output stored on the integrated circuitry.

Applications of the OPB800L55 typically involve situations that must detect a light beam being disturbed by an obstacle or a passing object. The device is mostly used in automotive and controlling applications. It can be used to detect the presence of an object, count objects or perform presence or absence tests.

The OPB800L55 is a non-contact sensor, meaning that it does not require physical contact with the object that it is detecting. This also means that it is a reliable and very durable device, capable of making accurate continuous readings in most environments without the need of regular maintenance or calibration.

Working Principle

The working principle of the OPB800L55 is that it uses a combination of a light emitting diode (LED) and a phototransistor to detect the presence of an object. The LED emits an infrared beam of light which is directed towards the phototransistor. When the light beam passes through the phototransistor, a small current is generated, which is then detected by the integrated circuitry and is used to produce an output signal. If an object passes between the LED and the phototransistor, the light beam is blocked and no current is generated. This means that the output signal is also removed, thus creating the necessary signal change in the device.

The OPB800L55 is very sensitive, making it ideal for applications requiring accurate detection of objects or materials. Furthermore, it is also capable of being used in environments that have fairly poor lighting conditions, since the LED emits an infrared beam which is readily detected by the phototransistor. This makes it suitable for use in outdoor applications where direct sunlight can often affect the performance of optical sensors.

Apart from object detection, the OPB800L55 is also commonly used for signal timing and pulse-width modulation. The main advantage of using this device for such applications is that it can accurately measure the length of a pulse or a signal. This makes it ideal for applications that necessitate high-precision and repeatable timing.

Conclusion

The OPB800L55 is a versatile and high-performance optical sensor which is suitable for a variety of applications including object detection, signal timing, and pulse-width modulation. It is a non-contact sensor, which means that it does not require physical contact with an object or material to make accurate readings. Furthermore, it is a very accurate and durable device, making it an ideal choice for applications with demanding requirements.

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