Do US Digital encoders work well in a dusty environment?

Our encoders use an LED with a phased array detector. This essentially means that the sensor is not just focused on only one point of the disk but is looking simultaneously at multiple line and window pairs. That way, a flaw at one spot on the disk is easily averaged out. This robust design allows for a consistent signal output even when dust or other imperfections exist, such as those you would expect from everyday use and the handling of encoders. Furthermore, our LEDs operate in the infrared spectrum, which means they're less susceptible to physical obstructions than visible light.