US Patent Issued to e-Vision Smart Optics on Nov. 11 for "Electro-active lenses with curved substrates having stepped or tiered surfaces" (Florida Inventor)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,468,207, issued on Nov. 11, was assigned to e-Vision Smart Optics Inc. (Sarasota, Fla.).

"Electro-active lenses with curved substrates having stepped or tiered surfaces" was invented by Anthony Van Heugten (Sarasota, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A typical liquid crystal lens includes liquid crystal sandwiched between transparent substrates, which are patterned with ring electrodes. Applying a voltage across the electrodes causes the liquid crystal molecules to rotate, changing their apparent refractive index and the lens's focal length. The ring electrodes are separated by gaps and get narrower toward the lens's periphery. If the ...