Light emittng module
US10884290B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2020 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Mar 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting module according to one embodiment of the present disclosure includes a lightguide plate having an upper surface in which a first hole is defined, and a lower surface opposite to the upper surface; and a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole. The upper surface of the lightguide plate includes a first region defining a plurality of protrusions and/or recesses. A ratio of an area occupied by the plurality of protrusions and/or recesses per unit area in a plan view increases concentrically in an outward direction from the light emitting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.