ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,809, issued on July 14, was assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT Co. LTD. (Osaka, Japan).
"Optical interference measurement device" was invented by Yasuhiro Kabetani (Osaka, Japan) and Takashi Urashima (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "When light adjusted at equal frequency intervals by optical comb generation filter 205 is incident and emitted from measurement head 207 to measurement target W, the light adjusted at equal frequency intervals by optical comb generation filter 205 is divided into measurement light and reference light by light division unit 208, and interference light in which reflected ligh...