ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,457, issued on April 21, was assigned to LMI TECHNOLOGIES INC. (Burnaby, Canada).

"Optical sensor apparatus" was invented by Heimo Keranen (Oulu, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to an example embodiment, an optical sensor apparatus (110) for determining at least one characteristic of a surface of an object (180) positioned within a measurement range is provided, the sensor apparatus (100) comprising: an illumination assembly (120) comprising one or more light sources (121, 121-k) arranged to emit light towards the measurement range through a light-collecting optical assembly, wherein the emitted light covers a prede...