Solid state lighting devices with adjustable color point

A solid state lighting device comprising:

• a first electrically activated solid state emitter;
• a second electrically activated solid state emitter;
• and
• a control circuit configured to adjust aggregated light emissions of the solid state lighting device to move between at least two color points;
• wherein at least a first color point of the at least two color points embodies a combination of light exiting the solid state lighting device that was emitted by the first and the second electrically activated solid state emitter that produces, in the absence of any additional light, aggregated light emissions having (x, y) coordinates on a 1931 CIE Chromaticity Diagram that define a point on or within 7 MacAdam ellipses of a white body locus embodying a line including segments defined by the following x, y coordinates on a 1931 CIE Chromaticity Diagram:
• (0.3114, 0.3386) to (0.3462, 0.3631), (0.3462, 0.3631) to (0.3777, 0.3790), (0.3777, 0.3790) to (0.3977, 0.3707), (0.3977, 0.3707) to (0.4211, 0.3713), and (0.4211, 0.3713) to (0.4437, 0.3808);
• and
• wherein the at least two color points are related according to one of the following conditions (a) to (c):
• (a) the at least two color points comprise a variation in x coordinate value of (x, y) coordinates on a 1931 CIE Chromaticity Diagram of less than 0.001;
• (b) the at least two color points comprise a variation in y coordinate value of (x, y) coordinates on a 1931 CIE Chromaticity Diagram of less than 0.001;
• and
• (c) the at least two color points, when plotted on a CIE 1976 u′-v′ chromaticity diagram, differ in Delta u′v′ values relative to one another by an amount of no greater than 0.01, and differ in correlated color temperature (CCT) values by an amount of at least 100K relative to one another.

A solid state lighting device comprising:

• a first electrically activated solid state emitter;
• a second electrically activated solid state emitter;
• and
• a control system configured to adjust aggregated light emissions of the solid state lighting device to move between at least two color points;
• wherein at least a first color point of the at least two color points embodies a combination of light exiting the solid state lighting device that was emitted by the first electrically activated solid state emitter and the second electrically activated solid state emitter that produces, in the absence of any additional light, aggregated light emissions having (x, y) coordinates on a 1931 CIE Chromaticity Diagram that define a point on or within 7 MacAdam ellipses of a white body locus embodying a line including segments defined by the following x, y coordinates on a 1931 CIE Chromaticity Diagram:
• (0.3114, 0.3386) to (0.3462, 0.3631), (0.3462, 0.3631) to (0.3777, 0.3790), (0.3777, 0.3790) to (0.3977, 0.3707), (0.3977, 0.3707) to (0.4211, 0.3713), and (0.4211, 0.3713) to (0.4437, 0.3808);
• wherein at least a second color point of the at least two color points embodies a combination of light exiting the solid state lighting device that was emitted by the first electrically activated solid state emitter and the second electrically activated solid state emitter that produces, in the absence of any additional light, aggregated light emissions having (x, y) coordinates on a 1931 CIE Chromaticity Diagram that define a point on or within 10 MacAdam ellipses of a Planckian locus;
• and
• wherein the at least a first color point and the at least a second color point differ in correlated color temperature (CCT) by a value of less than or equal to 100K relative to one another.

A solid state lighting device comprising:

• a first electrically activated solid state emitter;
• a second electrically activated solid state emitter;
• and
• a control system configured to adjust aggregated light emissions of the solid state lighting device to move between at least two color points;
• wherein at least a first color point of the at least two color points embodies a combination of light exiting the solid state lighting device that was emitted by the first electrically activated solid state emitter and the second electrically activated solid state emitter that produces, in the absence of any additional light, aggregated light emissions having a first correlated color temperature (CCT) value and having (x, y) coordinates on a 1931 CIE Chromaticity Diagram that define a point on or within 7 MacAdam ellipses of a white body locus embodying a line including segments defined by the following x, y coordinates on a 1931 CIE Chromaticity Diagram:
• (0.3114, 0.3386) to (0.3462, 0.3631), (0.3462, 0.3631) to (0.3777, 0.3790), (0.3777, 0.3790) to (0.3977, 0.3707), (0.3977, 0.3707) to (0.4211, 0.3713), and (0.4211, 0.3713) to (0.4437, 0.3808);
• wherein at least a second color point of the at least two color points embodies a combination of light exiting the solid state lighting device that was emitted by the first electrically activated solid state emitter and the second electrically activated solid state emitter that produces, in the absence of any additional light, aggregated light emissions having a second correlated color temperature (CCT) value;
• wherein the first CCT value and the second CCT value differ by at least 500K;
• and
• wherein aggregated light emissions at the first color point and aggregated light emissions at the second color point differ in luminous flux by at least 30%.

A solid state lighting device comprising:

• at least one first electrically activated solid state light emitter arranged to produce, in the absence of any additional light, light emissions within a first bin defining a first continuous region occupying an area not exceeding 10% of a 1931 CIE Chromaticity Diagram;
• at least one second electrically activated solid state light emitter arranged to produce, in the absence of any additional light, light emissions within a second bin defining a second continuous region occupying an area not exceeding 10% of a 1931 CIE Chromaticity Diagram, wherein the second continuous region is non-overlapping with the first continuous region, and the at least one first electrically activated solid state light emitter is independently controllable relative to the at least one second electrically activated solid state light emitter;
• a control circuit configured to adjust aggregated light emissions of the solid state lighting device to move between at least two color points;
• wherein at least a first color point of the at least two color points embodies a combination of light exiting the solid state lighting device that was emitted by the at least one first electrically activated solid state emitter and the at least one second electrically activated solid state emitter that produces, in the absence of any additional light, aggregated light emissions having (x, y) coordinates on a 1931 CIE Chromaticity Diagram that define a point on or within 7 MacAdam ellipses of a white body locus embodying a line including segments defined by the following x, y coordinates on a 1931 CIE Chromaticity Diagram:
• (0.3114, 0.3386) to (0.3462, 0.3631), (0.3462, 0.3631) to (0.3777, 0.3790), (0.3777, 0.3790) to (0.3977, 0.3707), (0.3977, 0.3707) to (0.4211, 0.3713), and (0.4211, 0.3713) to (0.4437, 0.3808);
• and
• wherein the solid state lighting device is devoid of any electrically activated solid state light emitter arranged to produce, in the absence of any additional light, light emissions outside either the first bin or the second bin.

A solid state lighting device comprising:

• at least one first electrically activated solid state light emitter arranged to produce, in the absence of any additional light, light emissions within a first bin defining a first continuous region occupying an area not exceeding 10% of a 1931 CIE Chromaticity Diagram;
• at least one second electrically activated solid state light emitter arranged to produce, in the absence of any additional light, light emissions within a second bin defining a second continuous region occupying an area not exceeding 10% of a 1931 CIE Chromaticity Diagram;
• and
• a first power line, wherein each of the at least one first and the at least one second solid state light emitter is electrically connected to the first power line;
• wherein the second continuous region is non-overlapping with the first continuous region, and the at least one first electrically activated solid state light emitter is independently controllable relative to the at least one second electrically activated solid state light emitter;
• wherein a combination of light exiting the solid state lighting device that was emitted by the first electrically activated solid state emitter and the second electrically activated solid state emitter produces, in the absence of any additional light, aggregated light emissions having (x, y) coordinates on a 1931 CIE Chromaticity Diagram that define a color point on or within 7 MacAdam ellipses of a white body locus embodying a line including segments defined by the following x, y coordinates on a 1931 CIE Chromaticity Diagram:
• (0.3114, 0.3386) to (0.3462, 0.3631), (0.3462, 0.3631) to (0.3777, 0.3790), (0.3777, 0.3790) to (0.3977, 0.3707), (0.3977, 0.3707) to (0.4211, 0.3713), and (0.4211, 0.3713) to (0.4437, 0.3808);
• and
• wherein the solid state lighting device is devoid of any electrically activated solid state light emitter arranged to produce, in the absence of any additional light, light emissions outside either the first bin or the second bin.