Layer materials and planar optical devices
US6788866B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 2001 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Feb 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/134
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Structures include a substrate with a release layer on the surface of the substrate and a uniform material over the release layer. The release layer generally includes powders or partly sintered powders. In some embodiments the uniform material is an optical material, which can be a glass. The optical material can be mechanically decoupled fro the substrate such that the optical material is stress free. The release layer can function as a transfer layer for transferring the uniform material to another substrate of separating the uniform material to create a freestanding structure. The release layer can be formed by the deposition of a material with a higher sintering temperature than powders used to form the uniform material. In other embodiments, a heating step is performed to preserve the release layer while consolidating powders on top into the uniform material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.