Light-absorbing composition and optical filter
US11300719B2 · kind B2 · utility
5Cited by
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9Claims
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Key dates
| Filing date | Nov 13, 2017 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Dec 2, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/806
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A light-absorbing composition includes: a light absorber formed by a phosphonic acid represented by the following formula (a) and copper ion, the light absorber being dispersed in the light-absorbing composition; a phosphoric acid ester allowing the light absorber to be dispersed; and a curable resin. When the light-absorbing composition is applied and cured on one principal surface of a transparent dielectric substrate to form a laminate consisting of a light-absorbing layer being a cured product of the light-absorbing composition and the transparent dielectric substrate, the laminate satisfies predetermined requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.