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:
Apr. 30, 2019
Filed:
Jun. 15, 2018
Ming LI, Acton, MA (US);
Arunava Dutta, Winchester, MA (US);
Anne Janet Milliez, Cambridge, MA (US);
Ravidasa Hegde, Andover, MA (US);
Vidisha Gupta, San Jose, CA (US);
Philip Gerard Rioux, Brentwood, NH (US);
Ming Li, Acton, MA (US);
Arunava Dutta, Winchester, MA (US);
Anne Janet Milliez, Cambridge, MA (US);
Ravidasa Hegde, Andover, MA (US);
Vidisha Gupta, San Jose, CA (US);
Philip Gerard Rioux, Brentwood, NH (US);
Other;
Abstract
A solid-state circadian rhythm lamp and luminaire and related control techniques are disclosed. The lamp or luminaire may have: (1) a night/pre-sleep emissions mode in which it emits light having a correlated color temperature (CCT) of about 1,800-2,300 K, the spectral power ratio of blue light (400-495 nm) being such that it constitutes about 10% or less of the total light emitted; (2) a day/wakeup emissions mode in which it emits light having a CCT of about 5,000-8,000 K, the spectral power ratio of blue light being such that it constitutes about 30% or more of the total light emitted; and/or (3) a general lighting mode in which it produces a combined light output having a CCT of about 2,500-5,000 K. The driver may support emissions mode changing based on hysteresis relating to a lighting switch associated with the lamp or luminaire.