ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,597, issued on Nov. 18, was assigned to Essilor International (Charenton-le-Pont, France).
"Compound microlens design for hyperopic peripheral defocus reduction" was invented by Zbigniew Tokarski (Dallas) and Ahmed Drammeh (Dallas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A spectacle lens is disclosed that includes compound microlenses arranged in a pattern. A compound microlens includes an on-axis microlenslet and an off-axis sub-lenslet located on the on-axis microlenslet. The off-axis sub-lenslet has a different optical functionality than the on-axis microlenslet. By selecting the appropriate compound microlens design, the addition of microl...