Patent · US Active

Lighting device

US10964850B2 · kind B2 · utility

0Cited by

8References

17Claims

0Family size

Assignee

LUMILEDS LLC · US

Inventors

Michael Deckers · Jülich, DE
Benno Spinger · Aachen, DE

Key dates

Filing date	Apr 16, 2020
Grant date	Mar 30, 2021
Priority date	—
Expiry date	Apr 16, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/857
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A lighting device is provided comprising at least one light-emitting element comprising a light-emitting surface configured to emit light; and a light-guiding sheet at least partially covering the light-emitting surface and comprising at least one cavity forming a passage for light emitted from the light-emitting surface. Thereby, at least one lateral surface limiting the at least one cavity is configured to reflect light emitted from the light-emitting surface. Further, a size of an opening of the at least one cavity facing the light-emitting surface is smaller than an area of the light-emitting surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.