Photochromic dye and liquid crystal optical element
US11880103B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Mar 31, 2022 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | May 6, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical element includes a first boundary layer and a second boundary layer. A solution is disposed between the first boundary layer and the second boundary layer. The solution includes liquid crystals co-mingled with oblong photochromic dye molecules. The photochromic dye molecules are matched to the liquid crystals to offset a decrease in absorption of the photochromic dye molecules in response to a temperature increase of the photochromic dye molecules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.