ALEXANDRIA, Va., June 19 -- United States Patent no. 12,332,524, issued on June 17, was assigned to ALPHAMICRON Inc. (Kent, Ohio).
"Color-preserving variable transmission optical device" was invented by Antonio Munoz (Shaker Heights, Ohio) and Bahman Taheri (Shaker Heights, Ohio).
According to the abstract* released by the U.S. Patent & Trademark Office: "A variable transmission optical device ("VTOD") includes first and second cells in optical communication, each cell having an electro-optic material capable of changing from a state of higher light transmittance to a state of lower light transmittance upon a change of an electric field applied across the electro-optic material. The VTOD is switchable between i) a clear state having chrom...