ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,785, issued on Feb. 24, was assigned to Changzhou AAC Raytech Optronics Co. Ltd. (Changzhou, China).
"Optical system" was invented by Xiuting Shi (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system is provided, including from a front side to a back side: an image plane provided with a circular polarizer attached to a back side of thereof for transmitting light; a third lens configured to move forward and backward along an optical axis to change a diopter of the optical system, a partial reflective element is provided on a front surface of the third lens; a second lens; a first lens including a composite film is provide...