ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,678, issued on June 30, was assigned to BEIJING XIAOMI MOBILE SOFTWARE Co. LTD. (Beijing).
"Optical system and camera device having same" was invented by Yasuhiko Obikane (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system has, sequentially from an object side to an image side, a first lens group including at least one lens and having a negative refractive power, a second lens group including at least one lens and having a positive refractive power, and a third lens group including at least one lens and having a negative refractive power. During focusing, distances from the first lens group and the third lens group to an imaging ...