LIGHTING DEVICE INCLUDING SOLID STATE EMITTERS WITH ADJUSTABLE CONTROL

• US 20180160504A1
• Filed: 02/01/2018
• Published: 06/07/2018
• 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.
• Granted Patent: US 10,412,809 B2
• Time in Patent Office: Days
• 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 control module for a solid state lighting device that includes 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 independently controllable and 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, 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, the control module comprising:

a memory storing at least one operating instruction set; and

at least one processor configured 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) at least one signal indicative of an environmental condition;

wherein the at least one processor is further configured 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 aggregated emissions.

2. The control module of claim 1, wherein the at least one processor is configured to perform at least one of the following adjustments (i) and (ii) while maintaining both of the following conditions (iii) and (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, and

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

3. The control module of claim 1, wherein the at least one processor is configured to perform at least one of the following adjustments (i) and (ii) while maintaining both of the following conditions (iii) and (iv):

(i) adjust melatonin suppressing milliwatts per hundred lumens of the aggregate emissions by at least 20%,

(ii) adjust relative gamut of the aggregate emissions by at least 15%,

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

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

4. The control module of claim 1, being configured to:

detect usage of the solid state lighting device;

store, in the memory of the control module, information regarding detected usage of the solid state lighting device, wherein the stored information includes information indicative of color point and luminous flux of aggregate emissions with respect to time;

automatically analyze, using the at least one processor, the stored information to identify one or more temporal patterns of usage of the solid state lighting device;

generate a proposed operating instruction set, using the at least one processor, responsive to the identified one or more temporal patterns of usage; and

adjust operation of the plurality of groups of solid state light emitters utilizing the proposed operating instruction set.

5. The control module of claim 1, wherein the at least one processor is further configured 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 an output signal of a detector configured to detect one or more of (iii) multiple different user-generated sound patterns indicative of user commands, or (iv) multiple different user-generated gesture patterns indicative of user commands.

6. The control module of claim 1, wherein the at least one processor is further configured to utilize at least one signal indicative of, or permitting derivation of, geospatial position 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 and color point of the aggregate emissions.

7. The control module of claim 1, further comprising at least one sensor arranged to receive or provide at least one signal indicative of an environmental condition.

8. The control module of claims 1, further comprising 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, a sound detector, or a particulate detector.

9. The control module of claim 1, being operatively coupled with a plurality of LED driver modules connected to the plurality of groups of solid state light emitters.

10. The control module of claim 1, further comprising a wireless transceiver configured 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.

11. A solid state lighting device comprising:

the control module of claim 1; and

the plurality of groups of solid state light emitters.

12. The solid state lighting device of claim 11, 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.

13. The solid state lighting device of claim 12, wherein 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 a range of from 2700K to 9000K;

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

(C) a luminous flux value of at least 600 over a correlated color temperature range spanning at least a range of 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 a range of from 2700K to 5700K.

14. A method facilitating control of a lighting device utilizing a control module that comprises a memory and at least one processor operative configured to control operation of a plurality of groups of solid state light emitters, wherein each group of solid state light emitters is independently controllable and 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, and emissions generated by each group of solid state light emitters are arranged to be combined to produce aggregate emissions of the lighting device, the method comprising;

detecting usage of the lighting device;

storing, in the memory of the lighting device, information regarding detected usage of the lighting device, wherein stored information includes information indicative of color point and luminous flux of aggregate emissions with respect to time;

automatically analyzing the stored information to identify one or more temporal patterns of usage of the lighting device;

generating a proposed operating instruction set responsive to identification of one or more temporal patterns of usage;

adjusting operation of the plurality of groups of solid state light emitters utilizing the proposed operating instruction set.

15. The method of claim 14, further comprising at least one of:

utilizing the proposed 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, or

utilizing the proposed 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 the selected color point or the at least one of correlated color temperature of the aggregated emissions.

16. The method of claim 14, wherein said analyzing, generating, and adjusting steps are performed by the at least one processor of the control module.

17. The method of claim 14, further comprising eliciting approval by a user of the proposed operating instruction set prior to adjusting operation of the plurality of groups of solid state light emitters utilizing the proposed operating instruction set.

18. A method facilitating control of a lighting device comprising a body structure, a memory, a processor, and a plurality of solid state light emitters, wherein the memory, the processor, and the plurality of solid state light emitters are arranged in or on the body structure;

the memory is arranged to store a plurality of selectable algorithms arranged to enable different control of operation the plurality of solid state light emitters;

the processor is arranged to execute steps of at least one algorithm of the plurality of selectable algorithms; and

emissions generated by the plurality of solid state light emitters are arranged to be combined to produce aggregate emissions of the lighting device, the method comprising;

downloading or retrieving from a communication network an additional selectable algorithm arranged to enable control of operation of the plurality of solid state light emitters; and

saving the additional selectable algorithm in the memory of the lighting device while maintaining in the memory at least one other selectable algorithm.

19. The method of claim 18, further comprising:

utilizing at least one detector associated with the lighting device to detect one or more of (i) a user-generated sound pattern indicative of a user command, (ii) a user-generated gesture pattern indicative of a user command, and (iii) at least one user-initiated signal; and

selecting the additional selectable algorithm saved in the memory of the lighting device responsive to said detection to initiate execution by the processor of steps of the additional selectable algorithm for control of the lighting device.

20. The method of claim 18, further comprising eliciting approval by a user of the additional selectable algorithm prior to controlling operation of the plurality of solid state light emitters utilizing the additional selectable algorithm.