公开(公告)号：US20240077777A1

公开(公告)日：2024-03-07

申请号：US18505144

申请日：2023-11-09

Applicant: ALPHAMICRON INCORPORATED

Inventor： Bahman Taheri ,  Ludmilla Sukhomlinova ,  Antonio Munoz ,  Joseph Angelo

IPC: G02F1/137 ,  G02F1/1347

CPC classification number: G02F1/137 ,  G02F1/1347

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 % TDS-P that is equal to or less than 10% for at least one of the first or second peak absorption wavelengths.

公开(公告)号：US20250147371A1

公开(公告)日：2025-05-08

申请号：US19013376

申请日：2025-01-08

Applicant: ALPHAMICRON INCORPORATED

Inventor： Bahman Taheri ,  Ludmila Sukhomlinova ,  Antonio Munoz ,  Joseph Angelo

IPC: G02F1/137 ,  G02F1/1347

Abstract: A variable transmission optical device 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 optical device is capable of switching from a clear state having a clear state transmittance % TCS-P to a darkened state having a darkened state transmittance % TDS-P, wherein a change between % TCS-P and % TDS-P corresponds to an optical density difference (ΔOD) of greater than 0.5 OD for at least one of the first or second peak absorption wavelengths. Both the first and second peak absorption wavelengths are in a range of 380-780 nm.

公开(公告)号：US12222623B2

公开(公告)日：2025-02-11

申请号：US18505144

申请日：2023-11-09

Applicant: ALPHAMICRON INCORPORATED

Inventor： Bahman Taheri ,  Ludmila Sukhomlinova ,  Antonio Munoz ,  Joseph Angelo

IPC: G02F1/137 ,  G02F1/1347

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 % TDS-P that is equal to or less than 10% for at least one of the first or second peak absorption wavelengths.