Multi-phase infrared transparent ceramic material
US11279657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2020 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Jun 11, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41G7/2293
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Various embodiments disclosed relate to an optical window including an infrared light transmissive optical material. The optical material includes a first ceramic phase including a first ceramic material and a first dopant distributed therein. The optical material further includes a second ceramic phase homogenously intermixed with the first ceramic phase and comprising a second ceramic material and a second dopant distributed therein. The first dopant increases the refractive index of the first ceramic material and the second dopant decreases the refractive index of the second ceramic material. The first dopant and the second dopant are present in an amount such that a difference in a refractive index of the first ceramic phase and of the second ceramic phase is in a range of from about 0.001 to about 0.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.