Diamond coated antireflective window system and method
US10254445B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 16, 2017 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Sep 27, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system and method for diamond based multilayer antireflective coating for optical windows are provided. An antireflective coatings for optical windows may include an optical grade silicon substrate; a plurality of polycrystalline diamond films, a plurality of germanium films, and a plurality of fused silica films. A method of fabricating a diamond based multilayer antireflective coating may include the steps of cleaning and seeding an optical substrate, forming a plurality of diamond layers above the optical substrate, forming a plurality of germanium layers above the optical substrate; and forming a plurality of fused silica layers above the optical substrate, wherein the reflectance of the antireflective coating is between 0.1 and 3.0 percent for infrared spectrum wavelengths between 1800 and 5000 nanometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.