Manufacturing process for striae-free multicomponent chalcogenide glasses via multiple fining steps
US10131568B2 · kind B2 · utility
1Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2016 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Jun 7, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2201/86
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a method for synthesizing high optical quality multicomponent chalcogenide glasses without refractive index perturbations due to striae, phase separation or crystal formation using a two-zone furnace and multiple fining steps. The top and bottom zones are initially heated to the same temperature, and then a temperature gradient is created between the top zone and the bottom zone. The fining and cooling phase is divided into multiple steps with multiple temperature holds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.