US Patent Issued to Essilor International on Feb. 17 for "Ophthalmic lens configured to exhibit a clear state and optionally a dark state" (Texas Inventor)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,149, issued on Feb. 17, was assigned to Essilor International (Charenton-le-Pont, France).

"Ophthalmic lens configured to exhibit a clear state and optionally a dark state" was invented by Ilya Bolshakov (Argyle, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Ophthalmic lenses configured to exhibit a clear state and optionally at least one darker state by means of a substrate which may advantageously be photochromic or electrochromic. The ophthalmic lenses may especially be spectacle lenses providing in said clear state a sufficient light transmittance together with an acceptable light reflectance for the wearer, and advantageously forming in ...