Thin direct-view LED backlights
US10983394B2 · kind B2 · utility
0Cited by
8References
16Claims
0Family size
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Key dates
| Filing date | Dec 5, 2019 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Dec 5, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-emitting apparatus including a light-emitting element and a lens covering the light-emitting element. The lens includes an upper surface having a convex shape and a lower surface including a cavity to which light emitted from the light-emitting elements is incident, in which the cavity includes an apex facing an upper surface of the light-emitting element and configured to reduce Fresnel reflections emitted vertically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.