Transmission-mode optical coupling mechanism and method of manufacturing the same
US6031951A · kind A · utility
10Cited by
3References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Apr 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
For use over a substrate having a substrate refractive index, a diffraction grating for, and method of, converting normally incident light into horizontally propagating light inside the substrate and an optical device employing the diffraction grating or method. In one embodiment, the diffraction grating includes: (1) a first volume of a first material having a first refractive index higher than said substrate refractive index, and (2) a second volume of a second material having a second refractive index lower than the substrate refractive index, the second volume being less than the first volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.