Patent · US Active

Light distribution device based on a planar waveguide

US11974064B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Cyrielle MONPEURT · Grenoble, FR
Gabriel JOBERT · Grenoble, FR

Key dates

Filing date	May 25, 2021
Grant date	Apr 30, 2024
Priority date	—
Expiry date	Jan 18, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH04N23/20
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A light distribution device, for distributing light rays from an ancillary light source onto a scene to be lighted. The device includes a planar waveguide, a recess in the planar waveguide for injecting light rays into the planar waveguide, and a through opening in the planar waveguide for extracting light rays from the planar waveguide. In this way, light can be distributed over a large area, homogeneously and with a thin, easily manufactured device.

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