Patent · US Active

Optical element and organic light-emitting device with optical element

US9772515B2 · kind B2 · utility

0Cited by

5References

20Claims

0Family size

Assignee

Osram OLED GMBH · DE

Inventors

Thomas Wehlus · Lappersdorf, DE
Arne Fleißner · Regensburg, DE
Daniel Riedel · Hersbruck, DE
Johannes Rosenberger · Regensburg, DE

Key dates

Filing date	Nov 27, 2014
Grant date	Sep 26, 2017
Priority date	—
Expiry date	Nov 27, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/005
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An optical element includes a light guide plate with a first major surface and with a second major surface opposite the first major surface and with side faces connecting the first and second major surfaces, wherein the light guide plate includes a matrix material transparent to ultraviolet light in which scattering centers are embedded, at least one light-emitting semiconductor device that couples ultraviolet light into the light guide plate via a side face when in operation, a first filter layer on the first major surface and a second filter layer on the second major surface, wherein the filter layers opaque to ultraviolet light and at least partially transparent to visible light, and a first photochromic layer at least on the first major surface, between the light guide panel and the first filter layer, with a transparency to visible light by ultraviolet light.

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