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:
Mar. 31, 2026
Filed:
Sep. 14, 2018
Luminus Devices, Inc., Woburn, MA (US);
Jinhui Zhai, Union City, CA (US);
Luminus Devices, Inc., Woburn, MA (US);
Abstract
Techniques for controlling the color of a light source during dimming are provided. A current control circuit may be arranged within a light source module and configured to adjust, according to a driving input current, the current path that passes through some of the lights (e.g., LEDs) in the module. If multiple current paths that pass through these lights have different impedances, a change in current path will cause the amount of current passing through these lights to increase or decrease. If the adjusted lights have a different color temperature than the other lights of the light source module, the change in current path as the driving current is adjusted can effect a change in color temperature as the light source module is dimmed.