Silicon-germanium based optical filter
US10168459B2 · kind B2 · utility
10Cited by
4References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2016 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Mar 16, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J37/3426
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An optical filter may include a substrate. An optical filter may include a set of optical filter layers disposed onto the substrate. The set of optical filter layers including a first subset of optical filter layers. The first subset of optical filter layers may include a silicon-germanium (SiGe) with a first refractive index. An optical filter may include a second subset of optical filter layers. The second subset of optical filter layers may include a material with a second refractive index. The second refractive index being less than the first refractive index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.