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:
Aug. 23, 2022
Filed:
Mar. 31, 2021
Xiamen Leedarson Lighting Co., Ltd, Fujian, CN;
XIAMEN LEEDARSON LIGHTING CO., LTD, Fujian, CN;
Abstract
A lighting apparatus includes a rectifier, a constant current circuit, a first LED series, a second LED series, a third LED series and a controller. The rectifier converts an alternating current power to a direct current power. The constant current circuit generates a first driving current, a second driving current and a third driving current derived from the direct current power. The controller has a first mode to only turn on the first LED series and to turn off the second LED series and the third LED series. The controller has a second mode to adjust the first PWM signal, the second PWM signal and the third PWM signal to generate a corresponding color temperature.