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:
Dec. 06, 2022
Filed:
Mar. 31, 2020
Signify Holding B.v., Eindhoven, NL;
Michel Cornelis Josephus Marie Vissenberg, Roermond, NL;
Alexander Henricus Waltherus Van Eeuwijk, Eindhoven, NL;
Dragan Sekulovski, Eindhoven, NL;
Signify Holding B.V., Eindhoven, NL;
Abstract
A light-emitting device () is provided. The light-emitting device () comprises a transparent light exit window (), and a light-emitting diode, LED, filament () adapted for emitting a first light output along one or more light output directions through the transparent light exit window (). The light-emitting device () comprises a light guide (). The light guide () comprises an incoupling feature (), configured for receiving light emitted by a light source () and for coupling of the light emitted by the light source () into the light guide (). The light source () comprises or is constituted by at least one of the LED filament () or a separate light source () comprised in the light-emitting device (). The light guide () further comprises at least one internal surface () adapted for internal reflection of the incoupled light within the light guide (), and an outcoupling feature () configured for outcoupling of light having been internally reflected within the light guide () from the light guide () thereby emitting a second light output, the second light output being superimposed onto the first light output when viewed along the one or more light output directions.