US Patent Issued to PixArt Imaging on March 31 for "Optical device and dirt level determining method" (Taiwanese Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,591,960, issued on March 31, was assigned to PixArt Imaging Inc. (Hsin-Chu City, Taiwan).

"Optical device and dirt level determining method" was invented by Guo-Zhen Wang (Hsin-Chu City, Taiwan) and Hung-Ching Lai (Hsin-Chu City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical device, comprising: a processing circuit; a light source, configured to emit light to a surface; and an optical sensor, configured to sense optical data generated based on reflected light or scattering light of the light. The processing circuit computes a dirt level of the surface according to the optical data."

The patent was filed on May 12, 2022, under Applic...