Lighting device and lighting method

A lighting device comprising:

• a first group of solid state light emitters, said first group of solid state light emitters including at least one solid state light emitter;
• a first group of lumiphors, said first group of lumiphors including at least one lumiphor;
• a second group of solid state light emitters, said second group of solid state light emitters including at least one solid state light emitter;
• and
• at least a first power line, each of said first group of solid state light emitters and each of said second group of solid state light emitters being electrically connected to said first power line,
• wherein:
• each of said first group of solid state light emitters, if illuminated, would emit light having a dominant wavelength in the range of from 430 nm to 480 nm;
• each of said first group of lumiphors, if excited, would emit light having a dominant wavelength in the range of from about 555 nm to about 585 nm;
• each of said second group of solid state light emitters, if illuminated, would emit light having a dominant wavelength in the range of from 600 nm to 630 nm;
• if current is supplied to said first power line:
• a combination of (1) light exiting said lighting device which was emitted by said first group of solid state light emitters, (2) light exiting said lighting device which was emitted by said first group of lumiphors, and (3) light exiting said lighting device which was emitted by said second group of solid state light emitters would, in an absence of any additional light, produce a mixture of light having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within ten MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram, and
• a combination of (1) light exiting said lighting device which was emitted by said first group of solid state light emitters, and (2) light exiting said lighting device which was emitted by said first group of lumiphors would, in an absence of any additional light, produce a sub-mixture of light having x, y color coordinates which define a point which is within an area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, said first line segment connecting a first point to a second point, said second line segment connecting said second point to a third point, said third line segment connecting said third point to a fourth point, said fourth line segment connecting said fourth point to a fifth point, and said fifth line segment connecting said fifth point to said first point, said first point having x, y coordinates of 0.32, 0.40, said second point having x, y coordinates of 0.36, 0.48, said third point having x, y coordinates of 0.43, 0.45, said fourth point having x, y coordinates of 0.42, 0.42, and said fifth point having x, y coordinates of 0.36, 0.38.