Waveguides
US9465213B2 · kind B2 · utility
87Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2009 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Apr 13, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0125
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image-providing light source device 58 is arranged to inject a non-coherent and collimated image into waveguide element 60. Light forming the image is dispersed by an optical element 76 so as to occupy a continuum of angles within the waveguide 60. The optical element 76 and a grating 70 are arranged such that the light exiting the waveguide occupies a single angle. Thereby, pupil banding of light exiting the waveguide 60 is mitigated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.