Lighting device LED module with effects for color temperature tuning and color tuning
View Patent ↗A lighting device includes one or more LED modules, each of which includes a group of LED sets positioned on a substrate. Each LED set includes two or more sections, optionally under a single lens. Each section is configured to emit light of different luminescent properties, such as different colors or different color temperatures. The color, color temperature or other characteristics of light emitted by the device is controlled by selectively activating the sections of each LED set.
1. A light emitting diode (LED) module for a lighting device comprising:
a substrate;
a plurality of module-level conductors; and
a plurality of LED sets, each of which comprises:
a first section including a first group of LEDs,
a second section including a second group of LEDs, and
at least a third section with third group of LEDs,
a first conductive element that electrically connects the first section to a first one of the module-level conductors, and
a second conductive element that electrically connects the second section to a second one of the module-level conductors,
wherein the first section, the second section, and the third section are configured to emit light of different luminescent properties, and wherein the plurality of LED sets are arranged on the substrate such that each LED set is rotated with respect to at least one adjacent LED set.
2. The LED module of claim 1 , wherein:
at least some of the LED sets comprise:
at least one additional section including an additional group of LEDs,
for each additional section, an additional conductive element that electrically connects that additional section to an additional one of the module-level conductors; and
an optical lens that covers each of the sections.
3. The LED module of claim 2 , further comprising one or more non-conductive dividers configured to separate the first section and the second section.
4. The LED module of claim 1 , wherein the first section of each LED set is coated with a first phosphor coating and the second section of each LED set is coated with a second phosphor coating to provide the first and second sections of each LED set with the different luminescent properties.
5. The LED module of claim 1 , wherein the different luminescent properties comprise one or more of the following:
different colors;
different color rendering indices;
different Duv values; or
different color temperatures.
6. The LED module of claim 1 , wherein the different luminescent properties comprise different color temperatures, and each group of LEDs exhibits a color temperature that is a function of one or more of the following:
a number of LEDs in the group of LEDs;
one or more characteristics of LEDs in the group of LEDs;
a concentration of phosphor particles in a phosphor coating on the group of LEDs; or
one or more light emitting characteristics of a phosphor coating on the group of LEDs.
7. The LED module of claim 1 , wherein the LEDs sets are arranged on the substrate such that the sections of at least some of the LED sets are positioned to be skewed with respect to at least one adjacent LED set.
8. A lighting device, comprising:
a housing; and
one or more light emitting diode (LED) modules positioned in an opening of the housing and configured to emit light away from the housing, each LED module comprising:
a substrate,
a plurality of module-level conductors, and
a plurality of LED sets, each of which comprises:
a first section including a first group of LEDs;
one or more additional sections, each including an additional group of LEDs;
a first conductive element that electrically connects the first section to a first one of the module-level conductors; and
one or more additional conductive elements, each of which electrically connects an additional section of one or more of the LED sets to an additional one of the module-level conductors;
wherein the first section of each LED set and at least one or the one or more additional sections of each LED set are configured to emit light of different luminescent properties, and wherein the LEDs sets are arranged on the substrate such that each LED set is rotated with respect to at least one adjacent LED set.
9. The lighting device of claim 8 , further comprising:
a power supply; and
a controller configured to selectively direct current from the power supply to the module-level conductors to selectively drive each of the sections of each LED set.
10. The lighting device of claim 8 , further comprising one or more non-conductive dividers configured to separate each of the sections of each LED set.
11. The lighting device of claim 8 , wherein the first section of each LED set is coated with a first phosphor coating and each additional section of each LED set is coated with one or more different phosphor coatings to provide the sections of each LED set with the different luminescent properties.
12. The lighting device of claim 8 , wherein the different luminescent properties comprise one or more of the following:
different colors;
different color rendering indices;
different Duv values; or
different color temperatures.
13. The lighting device of claim 8 , wherein the different luminescent properties comprise different color temperatures, and each group of LEDs exhibits a color temperature that is a function of one or more of the following:
a number of LEDs in the group of LEDs;
one or more characteristics of LEDs in the group of LEDs;
a concentration of phosphor particles in a phosphor coating on the group of LEDs; or
one or more light emitting characteristics of a phosphor coating on the LED set.
14. The lighting device of claim 8 , further comprising control circuitry programmed to generate commands to control drive currents delivered to the first group of LEDs in each LED set and each additional group of LEDs in each LED set so that the lighting device emits light of a specified color temperature.
15. The lighting device of claim 8 , wherein the first section of each LED set is configured to emit light of color temperature that is in a range of 3000 K-4000 K, and at least one of the one or more additional sections are configured to emit light of color temperature that is in a range of 6000 K-7000 K.
16. The lighting device of claim 8 , wherein:
the first group of LEDs in each LED set exhibits a first color;
each additional group of LEDs in each LED set exhibits a different color; and
the lighting device further comprises control circuitry programmed to generate commands to control drive currents delivered to each of the groups of LEDs in each LED set so that the lighting device emits light of a specified one of the colors.
17. The lighting device of claim 8 , wherein each of the LED modules further comprises an optical lens that covers each section of the module.
18. A lighting device, comprising:
a housing;
one or more light emitting diode (LED) modules positioned in an opening of the housing and configured to emit light away from the housing, each LED module comprising:
a substrate,
a plurality of module-level conductors, and
a plurality of LED sets, each of which comprises:
a first section including a first group of LEDs,
one or more additional sections, each including an additional group of LEDs,
a first conductive element that electrically connects the first section to a first one of the module-level conductors, and
one or more additional conductive elements, each of which electrically connects an additional section of one or more of the LED sets to an additional one of the module-level conductors,
wherein the first section of each LED set and at least one of the one or more additional sections of each LED set are configured to emit light of different luminescent properties; and
control circuitry programmed to generate commands to control drive currents delivered to the first group of LEDs in each LED set and each additional group of LEDs in each LED set so that the lighting device emits light of a specified color temperature.
19. The lighting device of claim 18 , further comprising:
a power supply; and
a controller configured to selectively direct current from the power supply to the module-level conductors to selectively drive each of the sections of each LED set.
20. The lighting device of claim 18 , further comprising one or more non-conductive dividers configured to separate each of the sections of each LED set.
21. The lighting device of claim 18 , wherein the first section of each LED set is coated with a first phosphor coating and each additional section of each LED set is coated with one or more different phosphor coatings to provide the sections of each LED set with the different luminescent properties.
22. The lighting device of claim 18 , wherein the different luminescent properties comprise one or more of the following:
different colors;
different color rendering indices;
different Duv values; or
different color temperatures.
23. The lighting device of claim 18 , wherein the different luminescent properties comprise different color temperatures, and each group of LEDs exhibits a color temperature that is a function of one or more of the following:
a number of LEDs in the group of LEDs;
one or more characteristics of LEDs in the group of LEDs;
a concentration of phosphor particles in a phosphor coating on the group of LEDs; or
one or more light emitting characteristics of a phosphor coating on the LED set.
24. The lighting device of claim 18 , wherein the first section is configured to emit light of color temperature that is in a range of 3000 K-4000 K, and at least one of the one or more additional sections are configured to emit light of color temperature that is in a range of 6000 K-7000 K.
25. The lighting device of claim 18 , wherein:
the first group of LEDs in each LED set exhibits a first color;
each additional group of LEDs in each LED set exhibits a different color; and
the lighting device further comprises control circuitry programmed to generate commands to control drive currents delivered to each of the groups of LEDs in each LED set so that the lighting device emits light of a specified one of the colors.
26. The lighting device of claim 18 , wherein each of the LED modules further comprises an optical lens that covers each section of the module.
27. A lighting device, comprising:
a housing; and
one or more light emitting diode (LED) modules positioned in an opening of the housing and configured to emit light away from the housing, each LED module comprising:
a substrate,
a plurality of module-level conductors, and
a plurality of LED sets, each of which comprises:
a first section including a first group of LEDs;
one or more additional sections, each including an additional group of LEDs;
a first conductive element that electrically connects the first section to a first one of the module-level conductors; and
one or more additional conductive elements, each of which electrically connects an additional section of one or more of the LED sets section to an additional one of the module-level conductors;
wherein:
the first section and at least one of the one or more additional sections are configured to emit light of different luminescent properties,
the first group of LEDs in each LED set exhibits a first color,
each additional group of LEDs in each LED set exhibits a different color, and
the lighting device further comprises control circuitry programmed to generate commands to control drive currents delivered to each of the groups of LEDs in each LED set so that the lighting device emits light of a specified one of the colors.
28. The lighting device of claim 27 , further comprising:
a power supply; and
a controller configured to selectively direct current from the power supply to the module-level conductors to selectively drive each of the sections of each LED set.
29. The lighting device of claim 27 , further comprising one or more non-conductive dividers configured to separate each of the sections of each LED set.
30. The lighting device of claim 27 , wherein the first section of each LED set is coated with a first phosphor coating and each additional section of each LED set is coated with one or more different phosphor coatings to provide the sections of each LED set with the different luminescent properties.
31. The lighting device of claim 27 , wherein the different luminescent properties comprise one or more of the following:
different colors;
different color rendering indices;
different Duv values; or
different color temperatures.
32. The lighting device of claim 27 , wherein the different luminescent properties comprise different color temperatures, and each group of LEDs exhibits a color temperature that is a function of one or more of the following:
a number of LEDs in the group of LEDs;
one or more characteristics of LEDs in the group of LEDs;
a concentration of phosphor particles in a phosphor coating on the group of LEDs; or
one or more light emitting characteristics of a phosphor coating on the LED set.
33. The lighting device of claim 27 , wherein each of the LED modules further comprises an optical lens that covers each section of the module.