OPB690

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The OPB690 is an optical components from a category of slot type Photointerrupters that fall under the broader classification of Optical Sensors. Photointerrupters are devices used in various automation applications including motor control, sensing and safety. Specifically, the OPB690 is used in applications with a minimum gap size of 0.15mm, a high resolution of 0.005mm and up to 4000 cycles per second, making it a great choice for environments requiring high precision and reliability.

Photointerruptors utilize the basic principles of optics and electrical engineering to detect and sense objects. Essentially, the OPB690 has an infrared light source (emitter) and a sensor (receiver) that are positioned opposite each other in an air gap or slot at a distance of 0.15mm or greater. When an object passes through the slot, the light is blocked or interrupted, generating an electrical signal in the sensor. This signal is then outputted as transistor output.

In the OPB690, the emitter light source is typically an infrared LED (Light Emitting Diode) with an IR transmission range of 850nm-940nm. The sensor is made up of a photodiode which converts the optical signal into a corresponding electrical current, and an output transistor circuit which amplifies the signal and translates it into an ON/OFF transistor output signal. The output transistor is capable of driving other devices or circuits such as logic controllers or power systems, while also providing protection from electrostatic discharge (ESD).

For applications requiring higher sensitivity and accuracy, the OPB690 offers an adjustable sensitivity adjustment feature, which helps ensure that the output signal can be adjusted to detect even the smallest objects or features. The OPB690 also features a stable and robust construction, with a white package that helps reduce the effects of external light sources. The durable and reliable design of the OPB690 provides a long lifetime of up to 5 million operations.

Overall, the OPB690 is an ideal solution for applications with tight spaces and precise positional accuracy. Its accuracy and high speed make it suitable for a wide range of applications including machine detectors, linear and rotary encoders, position feedback and pulse counting devices, among others.

Additional features of the OPB690 include fast response time of typically less than 5ms, low power consumption, robust design and IP67 protection rating. With these features and an excellent cost performance ratio, the OPB690 is sure to provide reliable and accurate sensing in a variety of applications.

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