OPB840L51

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Optical sensors, as the name implies, are devices that measure the intensity of light that is passed through or emitted by an object. They are used in a wide variety of applications, from industrial automation and robotics to medical imaging and traffic control. One type of optical sensor is the photointerrupter, which is used to detect when a beam of light is broken or interrupted. The OPB840L51 is a slot-type photointerrupter with a transistor output, which makes it well suited for many device and system applications.

The working principle of a slot-type photointerrupter is relatively simple. The OPB840L51 contains an infrared LED light source and an integrated photo detector in an open slot. When an object passes through the slot, it interrupts the beam of light passing between the LED and the photo detector, causing the transistor output to switch from High to Low. This allows the device to be used as a presence or go/no-go indicator for any machine or system that needs quick, accurate detection of objects.

The OPB840L51 has an 8.4mm narrow slot with an LED current of 5mA. It provides short response time of 2µ sec for high speed detection and operates up to 120mA of output current. This makes it ideal for use in complicated and high speed applications. It can detect objects in both forward and reverse rotation, and its level sensing type transistor output minimizes signal noise, making it very reliable. The device has a wide operating voltage of 3 to 24 volts, making it suitable for operation with both AC and DC power supplies.

The OPB840L51 is specifically designed for use in a wide variety of applications, including positioning systems, automation and process control, sheet/fabric sensors, human/machine interface systems, and material handling. It can also be used in many industrial operations such as part counting and sorting, as well as consumer applications such as games and toys. Due to its reliable detection and long operating life, the OPB840L51 is a popular choice for many different applications.

In summary, the OPB840L51 is a slot photointerrupter with a transistor output. It has a wide operating voltage range and can rapidly detect objects in both forward and reverse direction. Its low noise output and reliable detection features make it a popular choice for a wide variety of industrial and consumer applications. It is perfect for use in automation and process control, as well as positioning systems and material handling.

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