US Patent Issued to AAG OPTICS (CHANGZHOU) on June 23 for "Lens forming method" (Chinese Inventor)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,408, issued on June 23, was assigned to AAG OPTICS (CHANGZHOU) Co. LTD. (Changzhou City, China).

"Lens forming method" was invented by Tao Liang (Changzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lens forming method is provided, including: heating a blank mold with a pre-molding cavity until a glass preform in the pre-molding cavity is in a semi-molten state; applying a pressure to the blank mold, so that the glass preform is extruded to form a lens rough blank with a predetermined shape; cooling the blank mold and the lens rough blank, and separating the blank mold by depressurization, to transfer the lens rough blank to a molding c...