Sol-gel method for making gradient index optical elements
US5068208A · kind A · utility
21Cited by
6References
20Claims
0Family size
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Key dates
| Filing date | Apr 5, 1991 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Apr 5, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2203/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Gradient-index glass is produced in a sol-gel process by utilizing water or a mixture of water and alcohol. This technique is particularly suitable for production of glass bodies with a ternary system of metal alkoxides, including silicon alkoxide, an index modifying metal alkoxide, such as alkoxides of titanium and zirconium, and an additional metal alkoxide, such as an alkoxide of aluminum, boron, or germanium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.