Birefringent diffuser
US8817374B2 · kind B2 · utility
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4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2009 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Sep 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0018
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A birefringent diffuser includes a first optical material and a first birefringent material. The first optical material and the first birefringent material are combined to form a planar layer. The planar layer has an internal pattern of the materials presenting a substantially uniform index of refraction for incident light which is substantially normal to the planar layer and exhibiting a varying index of refraction for at least a portion of light which is trapped in guided modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.