Optical Encoders and Magnetic Encoders – Main Differences

One difference between them is that the optical encoder can be applied for measuring the speed of a shaft rotation, whereas magnetic encoders can provide angular position information. In addition, you can use an optical encoder to measure linear displacement because it doesn’t need a stable light source and has a high resolution. On the other hand, if you want to measure displacement accurately with a magnetic encoder, you need to install an absolute re