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:
Jul. 05, 2022
Filed:
Feb. 07, 2020
Applicant:
Lucidity Lights, Inc., Charlestown, MA (US);
Inventors:
Bruce C. Larson, Lexington, MA (US);
John R. Goscha, Boston, MA (US);
Ellen Bossert, Needham Heights, MA (US);
Assignee:
Lucidity Lights, Inc., Charlestown, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 47/16 (2020.01);
U.S. Cl.
CPC ...
H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 47/16 (2020.01);
Abstract
A dimmable circadian lighting system is provided that includes a light source and a control circuit in electrical communication with the light source and a dimmer. The control circuit is operative to vary a corelated color temperature (CCT) of the light source based on a signal from the dimmer; and maintain approximately a same lumen output of the light source across an upper transition zone of the dimmer extending from about 70% or greater of a range of the dimmer to about 100% of the range of the dimmer.