ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,778, issued on April 15, was assigned to TAMRON Co. LTD. (Saitama, Japan).

"Zoom lens and imaging device" was invented by Keisuke Okada (Saitama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A zoom lens includes: a first lens group having negative refractive power and a subsequent group in order from an object side to an image side. The subsequent group includes, in order from an object side to an image side, a Gp1 group including one or more lens groups and having positive refractive power as a whole, a Gn1 group including one or more lens groups and having negative refractive power as a whole, a Gp2 group including one or more lens groups a...