ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,743, issued on July 29, was assigned to Tamron Co. Ltd. (Saitama, Japan).
"Optical system and imaging device" was invented by Toshiya Segawa (Saitama, Japan) and Yuki Mori (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "There are provided an optical system and an imaging device including the same. The optical system includes: in order from an object side to an image side, a first lens group having refractive power; and a second lens group having positive refractive power. A variable distance that varies during focusing between the first lens group and the second lens group is closer to an object than a variable distance that varies du...