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:
Oct. 11, 2022
Filed:
Jan. 20, 2020
Signify Holding B.v., Eindhoven, NL;
Grigory Alexandrovich Onushkin, Eindhoven, NL;
Berend Jan Willem Ter Weeme, Eindhoven, NL;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
The present invention relates to a color tunable filament lamp (), comprising: at least one tunable white LED filament () adapted to emit white light; and at least one RGB LED filament (), wherein each RGB LED filament of the at least one RGB LED filament comprises a plurality of groups (), each group comprising a red LED (), a green LED () and a blue LED (), wherein each tunable white LED filament of the at least one tunable white LED filament comprises first LEDs (') having a first pre-set correlated color temperature and second LEDs (″) having a second pre-set correlated color temperature lower than the first pre-set correlated color temperature, the first and second pre-set correlated color temperatures defining a sub-range (′) of a correlated color temperature range () of the color tunable filament lamp, and wherein the color tunable filament lamp is configured to use the first LEDs and the second LEDs but not the at least one RGB LED filament for target points () in said sub-range.