An optical encoder is a type of motion sensing device that uses light shone through a coded disk to track the movement of a shaft. The encoder provides feedback based on the interruption of light.
The graphic below outlines the basic construction of an optical incremental rotary encoder.
Broken down in steps, this is how an optical encoder provides motion feedback information:
EPC sells a variety of optical incremental encoders, in both shaft and thru-bore/blind hollow bore packages. For help finding the right encoder for you application, contact us. When you call EPC, you talk to engineers and encoder experts who can help you specify the right encoder solution for your application.
For more information about how an encoder works, watch our Encoder 101 video, “What’s an Encoder?”
An encoder is a sensing device that provides feedback from the physical world; that it, it converts motion to an electrical signal that can be read by some type of control device.
Encoders provide velocity, acceleration, direction, and position feedback to motion systems. Two basic types of feedback are absolute and incremental.
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