ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,908, issued on Oct. 27, was assigned to PIXART IMAGING (PENANG) SDN. BHD. (Penang, Malaysia).
"Multi-track optical encoder" was invented by Sai-Mun Lee (Penang, Malaysia).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided an optical encoder including an encoding medium, a substrate, a light source and a light sensor. The encoding medium includes an index track and a position track. The light source is arranged at a first surface of the substrate to emit light toward the index track and the position track. The light sensor is arranged at a second surface of the substrate, and has a first light sensing region and a second light sensing re...