Lens sheet including lens with variable curvature and display device including the same
US9417372B2 · kind B2 · utility
0Cited by
15References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Dec 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133615
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting unit for a display device includes: a plurality of light sources which emits light; a wedge-shaped light guide having an incident surface disposed close to the light sources and an opposing surface disposed opposite the incident surface; and a lens sheet disposed on the light guide, where the lens sheet includes a plurality of lenses, each having an axis in a direction from the incident surface to the opposing surface, where the light guide is thinner at the incident surface than at the opposing surface, and a radius of curvature of each of the lenses is larger at the incident surface than the opposing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.