ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,935, issued on April 22, was assigned to SEIKO EPSON Corp. (Tokyo).
"Detecting device and measuring device" was invented by Takefumi Fukagawa (Fujimi-Machi, Japan) and Takashi Tajiri (Matsumoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A detecting device of the present disclosure includes a light emitting portion that emits light and a light receiving portion including an angle limiting member that limits an angle of incidence of light from the light emitting portion, wherein the light receiving portion has a first light receiving region and a second light receiving region that is spaced further from the light emitting portion than the fi...