OPB859

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Optical Sensors are increasingly finding their way into industrial automation applications due to their advantages over traditional electromechanical motion sensors. The OPB859 Slot Type Photodetector with Transistor Output is one such optical sensor which is especially suited for use in many applications in automation, robotic, automotive, and aerospace industries.

The OPB859 is a slot type photodetector with a transistor output. It features a built-in lens that enables it to detect bright sources of light from different angles. The sensor includes a preamplifier and requires no external components. It can detect a wide range of light sources - from incandescent light sources up to blue laser light. Its maximum input light level is approximately 2000 µW/cm², resulting in an optimized detection area of up to 3 inches. The OPB859 also offers excellent linearity with minimal variation in output over the entire detection range.

The OPB859 is typically used in the automated sensing of a moving object, edge detection of thin material, and general presence/absence detection. Its fast response time (maximum of 200 ns) makes it well suited for high speed applications such as those found in robotics or automated production lines. The OPB859 also offers a high switching frequency which can be used to detect changes in the environment at frequencies up to 500 kHz.

The operation principle of the OPB859 is based on the sensing of the light source. The built-in lens concentrates the light entering the detection area, resulting in a stronger signal. The preamplifier then amplifies the signal before it is then converted to an electrical signal by the photodetector. The signal then passes through a comparator to determine whether the light is within the detection area. If it is, the output transistor is switched on and an electrical signal is produced.

The OPB859 is optimized for use in low-power/low-voltage applications where high accuracy and repeatability are required. It is simple to install and is extremely reliable, making it ideal for industrial, automotive, aerospace, and other applications requiring a reliable, low-cost optical sensor.

The OPB859 offers the user a number of advantages. It is compact, and its built-in lens increases the sensitivity and accuracy of the detector. Furthermore, it has a high switching frequency and response time which makes it well suited for high speed applications. It offers excellent linearity with minimal variation in output over the entire detection range, and its wide light sensitivity range makes it suitable for detecting various light sources. Finally, the OPB859 is simple to install and offers superior reliability and performance in demanding applications.

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