Method of manufacturing optical glass element
US5735920A · kind A · utility
4Cited by
13References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1997 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Aug 28, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C3/093
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A manufacturing method for an optical glass element having a refractive index equal to a design value after press-molding. A glass material of specified composition is melted and press-molded while it is in the molten state. The refractive index of the glass material is calculated by substracting a change in the refractive index of the glass material resulting from the press-molding from a required refractive index for a molded glass element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.