Selective light-blocking optical products having a neutral reflection
US10613261B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2018 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | May 4, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/014
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical products that comprise a composite coating having multiple bilayers of a first layer and a second layer, each provided with a binding group component which together form a complementary binding group pair, the multiple bilayers comprising: at least one bilayer a) comprised of a first pigment or pigment blend that exhibits a color reflection value that is less than about 2.5; at least one bilayer b) comprised of a pigment or pigment blend that selectively blocks visible light in a wavelength range of interest; and at least one bilayer c) comprised of a second pigment or pigment blend that exhibits a color reflection value that is less than about 2.5, wherein the optical product selectively blocks visible light in the wavelength range of interest, while exhibiting a color reflection value that is less than about 2.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.