OPB881L51Z

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Optical Sensors - Photointerrupters - Slot Type - Transistor Output

The OPB881L51Z is a transistor output type photointerrupter (optical sensor) from the OPB881L series of products manufactured by Optek Technology, Inc. The OPB881L51Z is classified as a Slot Type photointerrupter, meaning that this device is used for detecting objects passing through the slot that is created from the optical emitter and receiver. This particular device consists of an LED emitter and a PIN photodiode receiver that are encased and epoxy molded.

Application Field

The OPB881L51Z photointerrupter is designed for a number of different applications. It is an ideal device for use in industrial sensing, robotics, consumer and medical device control, automated conveyor systems, printing equipment control, and more. This type of device can be used to detect a variety of different things, such as the presence of an object in an area, the position of an object, or the presence of a gapping space between two objects.

Working Principle

The working principle of the OPB881L51Z photointerrupter is fairly straightforward. When an object passes through the slot created by the LED emitter and PIN photodiode receiver, the LED emits light which is then detected by the photodiode. When the light is blocked, the photodiode will be prevented from detecting it, which then signals the production of an output signal that is proportional to the amount of light that was blocked. This output signal can then be used to analyze the presence and positioning of the object that was detected.

Advantages

The OPB881L51Z photointerrupter has several advantages, such as a fast response time of 5 microseconds, a compact package size of 2.1 x 0.5 mm, and the ability to detect objects from up to 3 mm away. Additionally, this device has a wide operating temperature range of -25 to 85°C, making it suitable for a variety of applications.

Conclusion

The OPB881L51Z is a slot type photointerrupter from Optek Technology that is designed for a variety of applications, such as the detection of objects passing through a slot or the presence of a gap between two objects. This device has several advantages, including a fast response time, a compact package size, and the ability to detect objects from up to 3mm away. Additionally, this photointerrupter has a wide operating temperature range, allowing it to be used in a variety of environments.

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