US Patent Issued to Essilor International on Aug. 12 for "Three-state optical article and method for controlling same" (French Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,386,202, issued on Aug. 12, was assigned to Essilor International (Charenton-le-Pont, France).

"Three-state optical article and method for controlling same" was invented by Samy Hamlaoui (Charenton le Pont, France), Sylvain Chene (Charenton le Pont, France) and Bruno Fermigier (Charenton le Pont, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to an optical article which comprises a hollow chamber and a separator separating the hollow chamber into a first subspace and a second subspace.The separator comprises an aperture.The optical article comprises a deformable membrane, attached, in the second subspace, along a closed lin...