OPB696AZ

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Optical Sensors, such as Photointerrupters, are a versatile and useful tool for sensing changes in the environment. In particular, Slot Type, Logic Output OPB696AZ is an industry-standard type of Photointerrupter, used in a variety of applications in diverse fields. This article will discuss the application field and working principle of this device.

Applications:

The OPB696AZ photointerrupter is typically used in industrial, automotive, and consumer electronic applications. It can be used in robotic systems, sensors, and automation processes in the automotive industry. In the home appliance industry, the device is often utilized for appliance door sensing, current transformers, and temperature and pressure sensors. Additionally, it can be used in remote sensing and measurement equipment for healthcare applications.

Working Principle:

The OPB696AZ is a logic output type, irradiated slot-type photointerrupter. It is designed as a so-called "photo grid" that consists of an emitter and detector paired in one package. The emitter is a gallium arsenide LED and the receiver is a silicon phototransistor. The pair emits and receives infrared (IR) radiation between them when light transmission is interrupted, thus exhibiting a switch-type operation.

The fundamental operation of these devices is based on the fact that when the light transmission between the emitter and receiver is blocked, the output from the photointerrupter becomes “OFF”. In the reverse situation, when light transmission is achieved, the output from the photointerrupter becomes “ON”. This switch-type mechanism is used in a variety of applications, in both industrial and consumer electronics.

The OPB696AZ features a vertically mounted slot that is approximately 3mm wide and 500mm long. This slot is then filled with black insulation material. The black insulation material is then illuminated by the LED from the photointerrupter, thereby generating a light beam that is detected by the silicon phototransistor. In this way, the device acknowledges the interruption of the light beam and outputs a logic level signal. This signal is then used to activate or deactivate various systems and processes.

Conclusion:

The logic output Slot Type OPB696AZ photointerrupter is a widely used device in a variety of industrial, automotive, and consumer electronic sectors. Its fundamental operation is based on generation and reception of infrared radiation, whereby interruption triggers a switch-type operation that is used to activate and/or deactivate other systems and processes.

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