ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,515, issued on March 17, was assigned to BNL Eurolens (Bellegarde sur Valserine, France).
"Method for treating a mirrored optical item" was invented by Vincente Estevez Rodriguez (Montanges, France) and Laure Le Bihan (Montanges, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for treating a mirrored optical item, comprising: a substrate (10), a mirroring stack (21) of at least two interference layers (M1 to M6) carried by the substrate (10), thus increasing the reflection and having: an interference layer (M1) distant from the substrate (10), with a first initial thickness and a first refractive index and at...