Process for the production of glass molded article, optical element produced by the process, and method of treating glass
US8336332B2 · kind B2 · utility
3Cited by
4References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 1, 2012 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Mar 1, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2215/66
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided are a process for the production of a precision press-molded article having a high transmittance a method of treating a glass to color or decolor the glass, the process comprising heat-treating a press-molded article containing at least one selected from WO3, Nb2O5 or TiO2 in an oxidizing atmosphere to produce a glass molded article, and the method comprising heat-treating a colored glass containing at least one oxide of WO3 and Nb2O5 in an oxidizing atmosphere to decolor the glass, or heat-treating a glass containing at least one oxide selected from WO3, Nb2O5 or TiO2 in a non-oxidizing atmosphere to color the glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.