公开(公告)号：US10349484B1

公开(公告)日：2019-07-09

申请号：US15994483

申请日：2018-05-31

Applicant: Cree, Inc.

Inventor： Fan Zhang ,  Ryan Gresback ,  Antony Paul van de Ven ,  Robert Glass ,  Bernd P. Keller

IPC: H05B33/08 ,  H01L33/08 ,  H01L33/26 ,  A61N5/06 ,  A61M21/02 ,  H01L33/50 ,  A61M21/00

Abstract: Solid state lighting devices with melatonin suppression characteristics that ameliorate or reduce symptoms of circadian rhythm disorders or other health conditions. Aspects disclosed herein additionally relate to providing one or more of the foregoing effects while maintaining color rendering index (CRI) values acceptably high for the intended use, as well as providing lighting devices with high luminous efficacy and enhanced energy efficiency. A solid state lighting device includes one or more solid state emitters and one or more lumiphoric materials that provide aggregated emissions of the solid state lighting device. The aggregated emissions have a warm correlated color temperature (CCT) with a color point that is off of the blackbody locus (BBL) by a certain distance.