Patent · US Active

Semiconductor illuminating device

US10141483B2 · kind B2 · utility

2Cited by

5References

18Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Elmar Baur · Wahrenholz, DE
Reiner Windisch · Nittendorf, DE
Frank Baumann · Regensburg, DE

Key dates

Filing date	Jan 11, 2016
Grant date	Nov 27, 2018
Priority date	—
Expiry date	Jan 11, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/181
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A semiconductor illuminating device is disclosed. The device includes an LED configured for emitting blue primary radiation and an LED phosphor arranged and configured such that it emits secondary light that forms at least one component of the illumination light, wherein the LED phosphor comprises a red phosphor for emitting red light as a component of the secondary light and a green phosphor for emitting green light as a component of the secondary light, wherein the green light has a color point located above a first straight line having a slope m1 and a y-intercept n1 in a CIE standard chromaticity diagram, with the slope m1=1.189 and the y-intercept n1=0.226, and wherein the components of the illumination light are at such a ratio to one another that the illumination light has a color temperature of at most 5500 K.

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