OPB472L11

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Optical sensors have become vital components in many automated, high-speed, and safety-critical applications. Photointerrupters, also known as optical cross-connects, are the most common type of optical sensor used in industrial applications. Among the different optical designs available, slot type with logic output photointerrupters are gaining popularity due to their precision and timeliness. OPB472L11, from Optek Technology, is one such photointerrupter that provides a unique combination of features and capabilities.

Application Field and Working Principle

The OPB472L11 slot type with logic output photointerrupter is designed for industrial applications such as robotics, automated inspection systems, and safety systems. It operates in two modes – an input mode and an output mode. In input mode, the photointerrupter detects the presence or absence of light and transmits the information to the controller. In the output mode, the device uses a light emitter to control the direction, speed, and duration of an automated process.

It consists of an infrared emitter and an infrared detector paired together in a single package. The emitter emits a constant beam of light across a gap in the package. This light beam is detected by the detector, which then converts the optical signal into electrical signal to the controller. When the light beam is interrupted, the detector sends an output signal to the controller. This provides the response time required for the process control of the machine.

The OPB472L11 can also be used to detect the presence of objects in a specific area. It consists of two pairs of blade-type emitter and detector, which are electrically connected in series within the same package. When the sensor detects an object in its field of view, its output goes to logic “1”, otherwise it stays at “0”.

Unlike other photointerrupters, the OPB472L11 offers a high-speed response time of up to 500kHz and up to 6 mm sensing distance. In addition, it is certified for automotive applications, and its RoHS compliant construction helps reduce the cost of installation. It also features an adjustable sensitivity range and can detect objects with a 0.22 mm resolution.

Advantages and Disadvantages

The OPB472L11’s unique design provides a number of advantages, such as a high-speed response time of up to 500kHz, a wide sensing range of up to 6 mm, and a 0.22 mm resolution. Its RoHS compliant and automotive-ready construction renders it reliable in various industrial settings. Its adjustable sensitivity range makes it suitable for different tasks and environments.

Also, the sensor provides low power consumption and low maintenance. Its small size and light weight make it easy to install, and its simple wiring configuration helps reduce time and costs associated with the installation process.

On the downside, though the device is suitable for industrial applications, its design makes it less suitable for harsh environments. It must be shielded from moisture, dust, and vibration to maintain reliable performance.

Conclusion

OPB472L11 photointerrupter from Optek Technology functions as a slot type with logic output sensor suitable for industrial applications. It provides high-speed response time, wide sensing range, and adjustable sensitivity, making it suitable for detecting objects of different shapes and sizes in a wide range of environments. Furthermore, it is certified for automotive usage and its RoHS compliant construction renders it reliable. However, the device must be shielded from dust, moisture, and vibration for reliable performance.

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