LIGHTING DEVICE AND LIGHTING METHOD
First Claim
1. A lighting device comprising:
- a first group of solid state light emitters;
a second group of solid state light emitters; and
at least first and second portions of luminescent material;
wherein;
if the first group of solid state light emitters is illuminated, a portion of light emitted from the first group of solid state light emitters would excite the first portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the first group of solid state light emitters and light exiting the lighting device that was emitted from the first portion of luminescent material would, in the absence of any additional light, have a first group mixed illumination corresponding to a first point on a 1931 CIE Chromaticity Diagram, the first point having a first correlated color temperature;
if the second group of solid state light emitters is illuminated, a portion of light emitted from the second group of solid state light emitters would excite the second portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the second group of solid state light emitters and light exiting the lighting device that was emitted from the second portion of luminescent material would, in the absence of any additional light, have a second group mixed illumination corresponding to a second point on a 1931 CIE Chromaticity Diagram, the second point having a second correlated color temperature; and
the first correlated color temperature differs from the second correlated color temperature by at least 50 K.
2 Assignments
0 Petitions
Accused Products
Abstract
A lighting device comprising first and second groups of solid state light emitters, which emit light having peak wavelength in ranges of 430 to 480 nm, and first and second groups of lumiphors which emit light having dominant wavelength in the range of 555 to 585 nm. In some embodiments, if current is supplied to a power line, a combination of (1) light exiting the lighting device emitted by the first group of emitters, and (2) light exiting the lighting device emitted by the first group of lumiphors would have a correlated color temperature which differs by at least 50 K from a correlated color temperature which would be emitted by a combination of (3) light exiting the lighting device which was emitted by the second group of emitters, and (4) light exiting the lighting device which was emitted by the second group of lumiphors.
-
Citations
21 Claims
-
1. A lighting device comprising:
-
a first group of solid state light emitters; a second group of solid state light emitters; and at least first and second portions of luminescent material; wherein; if the first group of solid state light emitters is illuminated, a portion of light emitted from the first group of solid state light emitters would excite the first portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the first group of solid state light emitters and light exiting the lighting device that was emitted from the first portion of luminescent material would, in the absence of any additional light, have a first group mixed illumination corresponding to a first point on a 1931 CIE Chromaticity Diagram, the first point having a first correlated color temperature; if the second group of solid state light emitters is illuminated, a portion of light emitted from the second group of solid state light emitters would excite the second portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the second group of solid state light emitters and light exiting the lighting device that was emitted from the second portion of luminescent material would, in the absence of any additional light, have a second group mixed illumination corresponding to a second point on a 1931 CIE Chromaticity Diagram, the second point having a second correlated color temperature; and the first correlated color temperature differs from the second correlated color temperature by at least 50 K. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A lighting device comprising:
-
a first group of solid state light emitters; a second group of solid state light emitters; and at least first and second portions of luminescent material; wherein; the first group of solid state light emitters and the second group of solid state light emitters, if illuminated, would emit light having a peak wavelength in the range of from 430 nm to 480 nm; if the first group of solid state light emitters is illuminated, a portion of light emitted from the first group of solid state light emitters would excite the first portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the first group of solid state light emitters and light exiting the lighting device that was emitted from the first portion of luminescent material would, in the absence of any additional light, have a first group mixed illumination corresponding to a first point on a 1931 CIE Chromaticity Diagram, the first point having a first correlated color temperature; if the second group of solid state light emitters is illuminated, a portion of light emitted from the second group of solid state light emitters would excite the second portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the second group of solid state light emitters and light exiting the lighting device that was emitted from the second portion of luminescent material would, in the absence of any additional light, have a second group mixed illumination corresponding to a second point on a 1931 CIE Chromaticity Diagram, the second point having a second correlated color temperature; and the first correlated color temperature differs from the second correlated color temperature by at least 50 K.
-
-
16. A lighting device comprising:
-
a first group of solid state light emitters; a second group of solid state light emitters; a third group of solid state light emitters; and at least first and second portions of luminescent material; wherein; if the first group of solid state light emitters is illuminated, a portion of light emitted from the first group of solid state light emitters would excite the first portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the first group of solid state light emitters and light exiting the lighting device that was emitted from the first portion of luminescent material would, in the absence of any additional light, have a first group mixed illumination corresponding to a first point on a 1931 CIE Chromaticity Diagram, the first point having a first correlated color temperature; if the second group of solid state light emitters is illuminated, a portion of light emitted from the second group of solid state light emitters would excite the second portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the second group of solid state light emitters and light exiting the lighting device that was emitted from the second portion of luminescent material would, in the absence of any additional light, have a second group mixed illumination corresponding to a second point on a 1931 CIE Chromaticity Diagram, the second point having a second correlated color temperature; and the first correlated color temperature differs from the second correlated color temperature by at least 50 K; if (1) the first group of solid state light emitters is illuminated, (2) the second group of solid state light emitters is illuminated and (3) the third group of solid state light emitters is illuminated; a first group-second group-third group mixed illumination of (a) light exiting the lighting device which was emitted from the first group of solid state light emitters, (b) light exiting the lighting device which was emitted from the first portion of luminescent material, (c) light exiting the lighting device which was emitted from the second group of solid state light emitters, (d) light exiting the lighting device which was emitted from the second portion of luminescent material and (e) light exiting the lighting device which was emitted from the third group of solid state light emitters would have a correlated color temperature of at least 3500K. - View Dependent Claims (17, 18, 19, 20, 21)
-
Specification