The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2025
Filed:
Sep. 22, 2022
Alphamicron Incorporated, Kent, OH (US);
Pedro Soto, Kent, OH (US);
Antonio Munoz, Shaker Heights, OH (US);
Ludmila Sukhomlinova, Kent, OH (US);
Bahman Taheri, Shaker Heights, OH (US);
ALPHAMICRON INCORPORATED, Kent, OH (US);
Abstract
A multi-color variable transmission optical device (“MC-VTOD”) includes a first cell having a first electro-optic material provided between a first pair of substrates and a second cell having a second electro-optic material provided between a second pair of substrates. The first electro-optic material can changing from a state of higher light transmittance to a state of lower light transmittance in a first wavelength region upon a change in an electric field applied across the first electro-optical material. The second electro-optic material is capable of changing from a state of higher light transmittance to a state of lower light transmittance in a second wavelength region different from the first wavelength region upon a change in an electric field applied across the second electro-optical material. The MC-VTOD is switchable between i) a clear state wherein the first cell and second cell are in the state of higher light transmission, ii) a first tinted state wherein the first cell is in a state of lower light transmittance and the second cell is in a state of higher light transmittance, and iii) a colorimetrically neutral darkened state wherein at least the second cell is in a state of lower light transmittance. At least the first cell is characterized by a narrow band absorption of 175 nm or less in its state of lower light transmittance.