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:
Jan. 24, 2023
Filed:
Nov. 30, 2021
Savant Technologies Llc, East Cleveland, OH (US);
Yimin Zhu, Shanghai, CN;
Pan Yao, Shanghai, CN;
Jie Gao, Shanghai, CN;
Xiangjin Mo, Shanghai, CN;
Jiachen Yang, Shanghai, CN;
Kun Xiao, Shanghai, CN;
SAVANT TECHNOLOGIES LLC, East Cleveland, OH (US);
Abstract
Disclosed are a filament device for an illumination device, the illumination device, and a dimming method for the illumination device. The illumination device comprises: a dimming unit electrically connected to an external power supply, a first illumination unit which is electrically connected to the dimming unit and to which an input voltage from the external power supply is applied, a second illumination unit which is electrically connected to the dimming unit and to which an input voltage from the external power supply is applied, a unidirectional conduction unit electrically connected to the first illumination unit and the second illumination unit, a first current-limiting unit electrically connected to the first illumination unit; and a second current-limiting unit electrically connected to the second illumination unit, wherein the amplitude of the input voltage varies on the basis of a phase-cut angle of the dimming unit, when the amplitude of the input voltage varied on the basis of the phase-cut angle satisfies a first predetermined condition, the unidirectional conduction unit is in a turn-on state, and the illumination device operated in a first operation mode; and when the amplitude of the input voltage varied on the basis of the phase-cut angle satisfies a second predetermined condition, the unidirectional conduction unit is in a turn-off state, and the illumination device operates in a second operation mode. The effect of deepening the dimming depth is achieved.