ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,446,136, issued on Oct. 14, was assigned to Google LLC (Mountain View, Calif.).
"Passive infrared sensor device" was invented by Clare Zhang (Mountain View, Calif.), James Castro (San Jose, Calif.), Ken Jenks (San Jose, Calif.) and Bryan Macomber (Los Altos Hills, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and techniques are provided for sensor device. A sensor device may include a housing, a lens inserted into a first opening of the housing, a metal mask covering a portion of the interior of the lens, a passive infrared (PIR) sensor underneath the lens and the metal mask, and a light pipe around the PIR sensor, the lens, and the meta...