Diffraction grating
US7266268B2 · kind B2 · utility
41Cited by
15References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2005 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Jan 12, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Diffraction gratings for coupling an electromagnetic wave into a planar waveguide are disclosed. The diffraction grating may include a first diffraction grating and a second diffraction grating slanted relative to one another. Alternatively, the diffraction grating may include a first diffraction grating and a second diffraction grating spaced apart to form a gap therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.