| abstract |
A lighting device (33,70,90,120) comprising at least first and second groups of solid state light emitters (61,62,91,92). The first group emit light having dominant wavelength of at least 586 nm and a full width at half maximum of at least 40 nm, and the second group emit light having a dominant wavelength in the range of from about 460 nm to about 510 nm. In some aspects, lighting devices (33,70,90,120) and methods that provide improved indoor lighting, where many people spend 80 or 90 percent of their time. Also, a method comprising supplying current to at least first and second groups of solid state light emitters (61,62,91,92). |