PA12B2T20NO

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Optical Sensors are an active type of sensing device-they detect, convert, and transmit optical radiation into electrical signals. They are useful for measuring ambient light levels as well as for tracking dynamic objects or events. Various types of optical sensors have been developed over the years, including photoelectric, industrial, and thermopile sensors. This article will discuss the application field and working principle of one of these types of sensors, the PA12B2T20NO.

PA12B2T20NO Photoelectric Sensor

The PA12B2T20NO is a 180° dual view photoelectric sensor that has been designed to detect objects, measure distances, and read bar codes. It is composed of four optical components-a receiving device, a transmitting device, a supplemental device, and a reflection-absorbing device. The receiver is the optical portion that receives the light or object being sensed. The transmitting device is the optics that send the light or object in the direction of the receiver. The supplemental device further improves the appearance of the received signals, and the reflection-absorbing device helps the signal remain stable against interference from outside sources.

The PA12B2T20NO is constructed from two layers of optical components. The top layer is composed of two arrays of Fresnel lenses, which are designed to capture and project a wide field of view. The bottom layer is made up of an array of pins that form grids that are designed to capture the reflected light from the objects being sensed. The sensor is able to switch between two distinct operating modes-transitioning mode and reflective mode.

Application Field

Due to its dual-view design, the PA12B2T20NO is able to detect objects and measure distances in a variety of light and distance conditions. This makes the sensor well suited for mobile and industrial applications, including robotics, packaging and inspections, line tracking, material-handling systems, and automation. The sensor has also seen applications in retail, medical, and military/defence areas.

Working Principle

The operating principle of the PA12B2T20NO is based on triangulation. As the light is sent from the transmitting device, the two arrays of Fresnel lenses capture and project the light onto the array of pins. The pins then reflect a portion of the light back to the receiver. By measuring the phase difference between the light sent by the transmitter and the light received by the receiver, the sensor is able to determine the distance between itself and the object being sensed. In the reflective mode, the sensor is also able to detect the presence of an object by monitoring the intensity of the light received by the receiver.

Conclusion

The PA12B2T20NO is a versatile and reliable photoelectric sensor that is well suited for a variety of applications. Its dual-view design and triangulation operating principle allow the sensor to accurately detect objects and measure distances in a variety of light and distance conditions. This makes the sensor ideal for a wide range of industries, including robotics, packaging and inspections, line tracking, material-handling systems, automation, medical, military/defense, and retail.

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