OPB665N

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Optical sensors are devices that detect, measure, or analyze light in order to detect or measure the magnitude or other physical characteristic of a particular object or phenomenon. They are used in a wide variety of applications in the fields of industrial automation, medical diagnostics, robotics, and communications. Photointerrupters are a type of optical sensor. They detect the presence or absence of an object crossing a path of adjustable length by issuing a digital output signal. Slot type photointerrupters, such as the OPB665N, provide a logic output which allows them to be easily integrated into 2-state systems.

The OPB665N is a slot type photointerrupter with a logic output, designed to provide precise, optical non-contact detection of objects in presence/absence control, registration, spacing and counting applications. It is designed for use with an NPN phototransistor output circuit and can detect an object up to 4 mm wide and 0.5 mm thick. The OPB665N has a non-polarized infrared LED and phototransistor, and is capable of connecting to both positive and negative logic systems.

The OPB665N\'s primary application field is in the automation industry, where it can be used to detect the presence of an object as it moves along a predetermined path. Typical applications include the counting of individual object for inventory control, tracking the travel of machinery parts along a production line, and ensuring that products are fed into production machinery and remain in place until ready for processing. The OPB665N can also be used to provide positional information, verifying that an object is located within a predetermined range.

The OPB665N\'s working principle is based on a combination of light transmission and reflection. The unit consists of an infrared LED and an NPN phototransistor, mounted in a small housing. When an object passes through the slot, light from the LED is blocked from reaching the phototransistor. This causes a rapid decrease in current flow to the phototransistor, which triggers the output circuit and generates a logic output. This effect is blocked when the object is removed and the light is able to strike the phototransistor, causing the output current flow to return to its normal value. This logic output can then be sent to a microcontroller or other logic circuitry for further processing.

The OPB665N is a versatile and reliable slot type photointerrupter with a logic output. Its applications are numerous, and its working principle is simple but highly effective. Its combination of low-cost, strong functionality, and robust performance makes the OPB665N an ideal choice for many industrial automation applications.

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