ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,636, issued on Oct. 21, was assigned to SINTAI OPTICAL (SHENZHEN) Co. LTD. (Shenzhen, China) and ASIA OPTICAL Co. INC. (Taichung, Taiwan).
"Lens assembly" was invented by Ming-Chung Chen (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lens assembly includes a first lens group, a second lens group, and a third lens group, all of which are arranged in order from an object side to an image side along an optical axis. The first lens group is with positive refractive power and includes at least four lenses, among which the lens closest to the object side includes a convex surface facing the object side, and the lens closest to the imag...