Lighting device including solid state emitters with adjustable control

• US 9,900,957 B2
• Filed: 06/10/2016
• Issued: 02/20/2018
• Est. Priority Date: 06/11/2015
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: van de Ven, Antony Paul, Ho, Chin Wah, Chan, Wai Kwan, Swoboda, Charles M.
• Primary Examiner(s): WHITE, DYLAN C
• Application Number:
  US15/179,658
• Publication Number:
  US 20160366746A1
• Time in Patent Office: 620 Days
• Field of Search: 315152
• CPC Class Codes: A61N 5/0618 Psychological treatment
• CPC Class Codes: F21K 9/235 Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps F21K9/238 takes precedence
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21K 9/60 Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
• CPC Class Codes: F21V 19/003 Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/105 in response to determined parameters
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: H05B 47/115 by determining the presence or movement of objects or living beings
• CPC Class Codes: H05B 47/12 by detecting audible sound
• CPC Class Codes: H05B 47/16 by timing means
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: H05B 47/1965 using handheld communication devices
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

Lighting devices and methods utilize multiple independently controllable groups of solid state light emitters of different dominant wavelengths, with operation of the emitter groups being automatically adjusted by processor(s) to provide desired illumination. Operation of the emitter groups may be further affected by sensors and/or user input commands (e.g., sound patterns, gesture patterns, or signal transmission). Operation may be adjusted to compensate for presence, absence, intensity, and/or color point of ambient or incident light. Presence of five or more groups of solid state light emitters provide desirable luminous flux, color point, correlated color temperature (CCT), color rendering index (CRI), CRI R9, and luminous efficacy characteristics of aggregate emissions over a wide range of CCT values, and may permit adjustment of vividness (e.g., relative gamut) and/or melatonin suppression characteristics for a selected color point or CCT.

Claims

1. A solid state lighting device comprising:

a plurality of groups of solid state light emitters, wherein each group of solid state light emitters of the plurality of groups of solid state light emitters is arranged to generate emissions comprising a dominant wavelength that differs from a dominant wavelength of emissions generated by each other group of solid state light emitters, each group of solid state light emitters is independently controllable, and emissions generated by each group of solid state light emitters are arranged to be combined to produce aggregate emissions of the solid state lighting device;

at least one sensor arranged to receive or provide at least one signal indicative of an environmental condition;

a memory storing at least one operating instruction set;

at least one detector arranged to detect one or more of (i) multiple different user-generated sound patterns indicative of user commands, or (ii) multiple different user-generated gesture patterns indicative of user commands, and to produce at least one detector output signal responsive to such detection; and

at least one processor arranged to utilize the at least one operating instruction set to automatically adjust at different hours of a calendar day (a) luminous flux of the aggregate emissions and (b) at least one of correlated color temperature or color point of the aggregate emissions, responsive to at least one of (i) time or (ii) the at least one signal indicative of an environmental condition;

wherein the at least one processor is further arranged to suspend or alter automatic adjustment of (a) luminous flux of the aggregate emissions or (b) at least one of correlated color temperature or color point of the aggregate emissions, responsive to the at least one detector output signal; and

wherein the plurality of groups of solid state light emitters comprises;

a first group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 591 nm to 650 nm;

a second group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 506 nm to 560 nm;

a third group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 390 nm to 460 nm;

a fourth group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 461 nm to 505 nm; and

a fifth group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 430 nm to 480 nm and further arranged to stimulate emissions of a yellow- or green-emitting lumiphoric material arranged to generate emissions including a peak wavelength in a range of from 530 nm to 590 nm.

2. The solid state lighting device of claim 1, wherein the at least one processor is arranged to adjust, responsive to the at least one detector output signal and for a selected color point or correlated color temperature of the aggregate emissions, at least one of (c) melatonin suppressing milliwatts per hundred lumens of the aggregate emissions or (d) relative gamut of the aggregate emissions.

3. The solid state lighting device of claim 1, wherein the at least one processor is arranged to utilize the at least one operating instruction set to automatically adjust at different hours of a calendar day at least one of (c) melatonin suppressing milliwatts per hundred lumens of the aggregate emissions or (d) relative gamut of the aggregate emissions, for a selected color point or correlated color temperature of the aggregate emissions.

4. The solid state lighting device of claim 1, wherein the at least one sensor arranged to receive or provide at least one signal indicative of an environmental condition comprises one or more of:

an ambient light sensor, an image sensor, a temperature sensor, a barometric pressure sensor, a humidity sensor, a weather information receiver, a gas detector, or a particulate detector.

5. The solid state lighting device of claim 1, wherein the at least one detector comprises a first wireless transceiver arranged to receive at least one first signal from a digital communication device or a digital computing device to modify the at least one operating instruction set.

6. The solid state lighting device of claim 5, further comprising a second wireless transceiver arranged to transmit at least one second signal to at least one other solid state lighting device, wherein the at least one second signal is indicative of or includes the at least one operating instruction set that was modified responsive to the at least one first signal.

7. The solid state lighting device of claim 1, wherein the plurality of groups of solid state light emitters, the at least one sensor, the memory, the at least one detector, and the at least one processor are arranged in or on a single body structure.

8. The solid state lighting device of claim 1, wherein the at least one environmental condition comprises at least one of humidity, air pressure, ambient sound, gas concentration, presence or absence of gas, particulate concentration, presence or absence of particulates, temperature, cloud cover, outdoor ambient temperature, outdoor ambient light level, outdoor correlated color temperature, presence of precipitation, type of precipitation, UV index, solar radiation index, moon phase, moonlight light level, presence of aurora, or chill factor.

9. The solid state lighting device of claim 1, wherein the at least one detector is arranged to detect multiple different user-generated sound patterns indicative of user commands.

10. A solid state lighting device comprising:

a plurality of groups of solid state light emitters, wherein each group of solid state light emitters of the plurality of groups of solid state light emitters is arranged to generate emissions comprising a dominant wavelength that differs from a dominant wavelength of emissions generated by each other group of solid state light emitters, each group of solid state light emitters is independently controllable, emissions generated by each group of solid state light emitters are arranged to be combined to produce aggregate emissions of the solid state lighting device, and the plurality of groups of solid state light emitters includes at least five groups of solid state light emitters;

at least one sensor arranged to receive or provide at least one signal indicative of an environmental condition;

a memory storing at least one operating instruction set; and

at least one processor arranged to utilize the at least one operating instruction set to automatically adjust at different hours of a calendar day (a) luminous flux of the aggregate emissions and (b) at least one of correlated color temperature or color point of the aggregate emissions, responsive to at least one of (i) time or (ii) the at least one signal indicative of an environmental condition;

wherein the aggregate emissions generated by the solid state lighting device;

comprise a color rendering index (CRI) value of at least 90 and a relative gamut (Qg) value of at least 100 over a correlated color temperature range spanning at least from 2700K to 9000K in combination with at least one of the following features (A) or (B);

(A) a luminous flux value of at least 600 over a correlated color temperature range spanning at least from 2700K to 9000K;

or

(B) a luminous efficacy of radiation value of at least 300 over a correlated color temperature range spanning at least from 2700K to 5700K.

11. The solid state lighting device of claim 10, wherein the at least five groups of solid state light emitters comprise:

a first group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 591 nm to 650 nm;

a second group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 506 nm to 560 nm;

a third group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 390 nm to 460 nm;

a fourth group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 461 nm to 505 nm; and

a fifth group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 430 nm to 480 nm and further arranged to stimulate emissions of a yellow- or green-emitting lumiphoric material arranged to generate emissions including a peak wavelength in a range of from 530 nm to 590 nm.

12. The solid state lighting device of claim 11, wherein the at least one processor is arranged to utilize the at least one operating instruction set to automatically adjust at different hours of a calendar day at least one of (c) melatonin suppressing milliwatts per hundred lumens of the aggregate emissions or (d) relative gamut of the aggregate emissions, for a selected color point or correlated color temperature of the aggregate emissions.

13. The solid state lighting device of claim 10, further comprising at least one detector arranged to detect one or more of (i) multiple different user-generated sound patterns indicative of user commands, (ii) multiple different user-generated gesture patterns indicative of user commands, or (iii) at least one user-initiated signal, and to produce at least one detector output signal responsive to such detection;

wherein the at least one processor is further arranged to suspend or alter automatic adjustment of (a) luminous flux of the aggregate emissions and (b) at least one of correlated color temperature or color point of the aggregate emissions, responsive to the at least one detector output signal.

14. The solid state lighting device of claim 10, wherein the plurality of groups of solid state light emitters, the at least one sensor, the memory, and the at least one processor are arranged in or on a single body structure.

15. The solid state lighting device of claim 10, wherein the at least one sensor arranged to receive or provide at least one signal indicative of an environmental condition comprises one or more of:

an ambient light sensor, an image sensor, a temperature sensor, a barometric pressure sensor, a humidity sensor, a weather information receiver, a gas detector, or a particulate detector.

16. The solid state lighting device of claim 10, wherein the at least one environmental condition comprises at least one of humidity, air pressure, ambient sound, gas concentration, presence or absence of gas, particulate concentration, presence or absence of particulates, temperature, cloud cover, outdoor ambient temperature, outdoor ambient light level, outdoor correlated color temperature, presence of precipitation, type of precipitation, UV index, solar radiation index, moon phase, moonlight light level, presence of aurora, or chill factor.

17. A solid state lighting device comprising:

a plurality of groups of solid state light emitters, wherein each group of solid state light emitters of the plurality of groups of solid state light emitters is arranged to generate emissions comprising a dominant wavelength that differs from a dominant wavelength of emissions generated by each other group of solid state light emitters, each group of solid state light emitters is independently controllable, emissions generated by each group of solid state light emitters are arranged to be combined to produce aggregate emissions of the solid state lighting device, and the plurality of groups of solid state light emitters includes at least five groups of solid state light emitters;

a memory storing at least one operating instruction set;

at least one processor arranged to utilize the at least one operating instruction set to automatically adjust (a) luminous flux of the aggregate emissions and (b) at least one of correlated color temperature or color point of the aggregate emissions; and

a first wireless transceiver arranged to receive at least one first signal from a digital communication device or a digital computing device;

wherein the at least one processor is arranged to adjust, responsive to the received at least one first signal and for a selected color point or correlated color temperature of the aggregate emissions, at least one of (c) melatonin suppressing milliwatts per hundred lumens of the aggregate emissions or (d) relative gamut of the aggregate emissions.

18. The solid state lighting device of claim 17, wherein the at least one processor is arranged to perform at least one of the following adjustments (i) or (ii) while maintaining at least one of the following conditions (iii) or (iv):

(i) adjust melatonin suppressing milliwatts per hundred lumens of the aggregate emissions by at least 10%,

(ii) adjust relative gamut of the aggregate emissions by at least 8%,

(iii) maintain aggregate emissions of the solid state lighting device within four MacAdam ellipses of a target correlated color temperature value,

(iv) maintain aggregate emissions of the solid state lighting device at or above a color rendering index (CRI) value of at least 70.

19. The solid state lighting device of claim 17, wherein the at least five groups of solid state light emitters comprise:

a first group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 591 nm to 650 nm;

a second group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 506 nm to 560 nm;

a third group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 390 nm to 460 nm;

a fourth group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 461 nm to 505 nm; and

a fifth group comprising at least one solid state light emitter arranged to generate emissions including a peak wavelength in a range of from 430 nm to 480 nm and further arranged to stimulate emissions of a yellow- or green-emitting lumiphoric material arranged to generate emissions including a peak wavelength in a range of from 530 nm to 590 nm.

20. The solid state lighting device of claim 17, wherein the aggregate emissions generated by the solid state lighting device comprise at least one of the following characteristics (A) to (D):

(A) a color rendering index (CRI) value of at least 90 and a relative gamut (Qg) value of at least 100 over a correlated color temperature range spanning at least from 2700K to 9000K;

(B) a color rendering index R9 value of at least 80 over a correlated color temperature range spanning at least from 2700K to 9000K;

(C) a luminous flux value of at least 600 over a correlated color temperature range spanning at least from 2700K to 9000K;

or

(D) a luminous efficacy of radiation value of at least 300 over a correlated color temperature range spanning at least from 2700K to 5700K.

21. The solid state lighting device of claim 17, further comprising at least one detector arranged to detect one or more of (i) multiple different user-generated sound patterns indicative of user commands, (ii) multiple different user-generated gesture patterns indicative of user commands, or (iii) at least one user-initiated signal, and to produce at least one detector output signal responsive to such detection;

wherein the at least one processor is further arranged to suspend or alter automatic adjustment of (a) luminous flux of the aggregate emissions and (b) at least one of correlated color temperature or color point of the aggregate emissions, responsive to the at least one detector output signal.

22. The solid state lighting device of claim 17, further comprising a second wireless transceiver arranged to transmit at least one second signal to at least one other solid state lighting device, wherein the at least one second signal is indicative of or includes a signal produced by the at least one processor responsive to receipt of the at least one first signal.

23. The solid state lighting device of claim 17, wherein the plurality of groups of solid state light emitters, the memory, the at least one processor, and the first wireless transceiver are arranged in or on a single body structure.

24. The solid state lighting device of claim 17, further comprising at least one sensor arranged to receive or provide at least one signal indicative of an environmental condition, wherein the at least one processor is further arranged to adjust to automatically adjust at different hours of a calendar day (a) luminous flux of the aggregate emissions and (b) at least one of correlated color temperature or color point of the aggregate emissions, responsive to at least one of (i) time or (ii) the at least one signal indicative of an environmental condition.

25. The solid state lighting device of claim 24, wherein the at least one environmental condition comprises at least one of humidity, air pressure, ambient sound, gas concentration, presence or absence of gas, particulate concentration, presence or absence of particulates, temperature, cloud cover, outdoor ambient temperature, outdoor ambient light level, outdoor correlated color temperature, presence of precipitation, type of precipitation, UV index, solar radiation index, moon phase, moonlight light level, presence of aurora, or chill factor.