Light emitting module
US11143808B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2019 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Dec 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting module have a translucent light guide plate, which has a first primary surface that emits light and an opposite second primary surface, and a plurality of light sources disposed at given intervals on the second primary surface of the light guide plate. The light guide plate is made up of a plurality of light emitting cell regions with a light source disposed in the center section of each of the plurality of light emitting cell regions, an optically functional area is established on the first primary surface in each of the plurality of light emitting cell regions, and each light source is disposed on the second primary surface in a position opposite the corresponding optically functional area. The second primary surface has reflecting depressions at the boundaries between adjacent light-emitting cell regions, and the first primary surface has reflecting grooves positioned away from the center of each cell near the cell boundary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.