Optical element
US7557978B2 · kind B2 · utility
3Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2005 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Feb 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/055
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical waveguide is formed of a stack of electro-optic effect films. A stress-relief layer is formed between a substrate and the optical waveguide. The stress-relief layer is comprised of a metal material having a thermal expansion coefficient of 10×10−6/° C. or higher, for example, a metal material whose major component is one of Au, Ag, and an alloy thereof, and has a function of relieving a binding force to the optical waveguide ascribable to the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.