ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,776, issued on April 15, was assigned to Zhejiang Sunny Optics Co. Ltd (China).
"Optical imaging system" was invented by Lihui Ye (Yuyao, China), Fujian Dai (Yuyao, China) and Liefeng Zhao (Yuyao, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present disclosure provide an optical imaging system that comprising, sequentially from an object side to an image side of the optical imaging system along an optical axis: a first lens having a negative refractive power; a second lens having a refractive power, the image side surface of the second lens is a convex surface; a stop; a third lens having a refractive power; a fourth lens h...