Silicoborate and borosilicate glasses having high refractive index and high transmittance to blue light
US12187644B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Jan 24, 2024 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Jan 24, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2201/42
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Glasses containing silicon dioxide (SiO2) and/or boron oxide (B2O3) as glass formers and having a refractive index nd of greater than or equal to 1.80, as measured at 587.56 nm, a density of less than or equal to 5.5 g/cm3, as measured at 25° C., and a high transmittance to, particularly to blue light, are provided. Optionally, the glasses may be characterized by a high transmittance in the visible and near-ultraviolet (near-UV) range of the electromagnetic spectrum and/or good glass forming ability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.