What is a built-in type Photomicrosensors (photointerrupter)?

ID: FAQE40001E



A built-in type Photomicrosensors, also known as a photointerrupter, is a basic Optical Sensor used to detect object presence in consumer equipment (e.g. multifunction printers, IP cameras, robotic cleaners) and commercial devices (e.g. ATMs, packaging machines, copy machines).
In addition to the component level Photomicrosensors, Omron offers Photomicrosensors for industrial applications, primarily for factory facility equipment and factory automation (FA).


The difference between Component Level Photomicrosensors and Industrial Photomicrosensors is shown in the table below. Please note that these points do not necessarily apply to all the available Photomicrosensors models. Please check the specification datasheet for details on power supply voltage to determine the switching capacity condition and other requirements when choosing a model.

Differences between Photomicrosensors for built-in types and other for industrial use type.

Quick tips

The following illustration is a general example of the connecting method of different built-in type Photomicrosensors. PCB mounting is the most popular method of sensor attachment. Surface mount (SMD) is effective for downsizing and allows fewer man-hours of assembly. Pre-wired, or connector style is convenient for wiring and maintenance, and is ideal for detecting an object placed far from the main PCB. We advise users to choose a sensor that best matches the mechanical structure of the target device/equipment.

Built-in Type Photomicrosensors

For more information, please see Photomicrosensor Slection Guide.

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Product category Sensors Photomicro Sensors
Classification Selection, Characteristics
Related keywords
  • Optical Sensor
  • Built-in Type Photomicrosensors
  • Photomicrosensors for Built-in Devices
  • Photointerrupter
  • Consumer Devices/Equipment
  • Commercial Devices/Equipment
  • PC Board Type
  • SMD Type
  • Pre-Wired Type
  • Connector Type

Related Questions

How do I choose between a Photomicrosensors(photointerrupter) and a basic switch (the difference in usage)?
A basic switch is made of open and closed contacts whereas a Photomicrosensors(photointerrupter) is non-contact switching using an optical beam. A basic switch is available for AC and DC supplies.
Since a basic switch does not emit LED, it is ideally suited for applications that require low current consumption such as battery-powered equipment. A Photomicrosensors is superior in durability, sensing position accuracy and response speed.
What are the typical applications of built-in type Photomicrosensors (photointerrupters)?
The built-in type Photomicrosensors(photointerrupters) are commonly used for object presence and absence detection, disk rotation counting, positioning of moving objects and rotating direction detection (for encoder use).
How do I select the right Photomicrosensors(photointerrupter) for my application?
Commonly, the first step is choosing the sensing method, the transmissive (slot) or reflective type, that will fit best with the intended product design. Then decide on the body shape, sensing distance (the slot width for slot type), output, and the mounting and connecting method.

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