Liquid composition for optical filters and optical filter
US12129402B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Aug 27, 2019 |
| Grant date | Oct 29, 2024 |
| Priority date | — |
| Expiry date | Dec 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/223
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The liquid composition for optical filters according to the present invention contains: a light absorber; at least one of an alkoxysilane and a hydrolysate of an alkoxysilane; a phosphoric acid ester; and a solvent. The light absorber is formed by a phosphonic acid having an aryl group bonded to a phosphorus atom and copper ion. In the liquid composition, a content of an organic solvent having a relative permittivity of 7 or less at 20° ° C. is 50 mass % or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.