Optical diffusers with spatial variations
US8974069B2 · kind B2 · utility
8Cited by
3References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2009 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Aug 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diffuser is configured to diffuse radiation from multiple light sources. The diffuser includes a substrate having optical structures that exhibit both microvariations and macrovariations along the substrate. For example, an array of microlenses may be provided that include at least one feature that varies as a function of the spacing between the light sources. Lighting systems using these diffusers may also be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.