Asymmetric turning film with multiple light sources
US10371350B2 · kind B2 · utility
0Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2015 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Jul 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Optical systems are disclosed. More particularly, optical systems including an asymmetric turning film (110) with at least a first (120) and second light source (130) are disclosed. Selection of geometries for the asymmetric turning film can enable different output viewing angles depending on the selective illumination of the first light source, the second light source, or both. The optical systems disclosed may be suitable in both luminaires and displays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.