The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2022
Filed:
Oct. 23, 2018
Osram Oled Gmbh, Regensburg, DE;
Ion Stoll, Tegernheim, DE;
Philipp Pust, Langquaid, DE;
OSRAM OLED GMBH, Regensburg, DE;
Abstract
A lighting device for emitting a red total radiation may be configured such that the lighting device has a semiconductor layer sequence configured to emit electromagnetic primary radiation. A conversion element may include a first fluorescent material of the formula Sr[AlLiON]:Eu, crystallized in the tetragonal space group P4/m. The first fluorescent material may at least partially convert the electromagnetic primary radiation into an electromagnetic secondary radiation in the red region of the electromagnetic spectrum. The conversion element may include a second fluorescent material to at least partially convert the electromagnetic primary radiation into an electromagnetic secondary radiation in the red region of the electromagnetic spectrum and/or the lighting device may include a mirror or filter arranged above the conversion element.