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:
Feb. 11, 2025
Filed:
Nov. 09, 2023
Alphamicron Incorporated, Kent, OH (US);
Bahman Taheri, Shaker Heights, OH (US);
Ludmila Sukhomlinova, Kent, OH (US);
Antonio Munoz, Shaker Heights, OH (US);
Joseph Angelo, Kent, OH (US);
ALPHAMICRON INCORPORATED, Kent, OH (US);
Abstract
A laser protection variable transmission optical device ('LP-VTOD') includes first and second cells, each capable of changing from a state of higher light transmittance to a state of lower light transmittance. The first cell is characterized by a narrow band absorption having a first peak absorption wavelength and a first FWHM of 175 nm or less, and the second cell is characterized by a narrow band absorption having a second peak absorption wavelength and a second FWHM of 175 nm or less. The first peak absorption wavelength may be the same or different than the second peak absorption wavelength. The LP-VTOD is capable of switching from a clear state to a darkened state having a darkened state transmittance % Tthat is equal to or less than 10% for at least one of the first or second peak absorption wavelengths.