ALEXANDRIA, Va., March 31 -- United States Patent no. 12,591,059, issued on March 31, was assigned to NEC Corp. (Tokyo).
"Optical ranging device and optical ranging method" was invented by Hidemi Noguchi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical ranging device (10) according to the present disclosure includes a light pulse generation unit (11) that generates a light pulse with a phase change point between a first phase modulation portion and a second phase modulation portion, a light-transmitting unit (12) that transmits the generated light pulse, a light-receiving unit (13) that receives a light pulse reflected from a measurement object by the transmitted light pulse, and a distance c...