Tunable LED lamp for producing biologically-adjusted light and associated methods

• US 9,024,536 B2
• Filed: 06/26/2014
• Issued: 05/05/2015
• Est. Priority Date: 12/05/2011
• Status: Active Grant

• Current Assignee: Healthe, Inc.
• Original Assignee: BioLogical Illumination, LLC
• Inventors: Maxik, Fredric S., Bartine, David E., Soler, Robert R., Grove, Eliza Katar, Bretschneider, Eric
• Primary Examiner(s): Chang, Daniel D
• Application Number:
  US14/315,660
• Publication Number:
  US 20140306620A1
• Time in Patent Office: 313 Days
• Field of Search: 315/307, 315/113, 315/291, 315/294, 315/297, 315/308, 315/309, 362/294, 362/373, 362/249.07
• US Class Current: 315/294
• CPC Class Codes: A61M 2021/0044 by the sight sense
• CPC Class Codes: A61M 2021/0083 especially for waking up
• CPC Class Codes: A61M 21/00 Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
• CPC Class Codes: A61M 21/02 for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia for massage A61H; electrotherapy A61N, e.g. applying alternating or intermittent electric currents for producing anaesthesia A61N1/36021
• CPC Class Codes: A61N 2005/0652 Arrays of diodes
• CPC Class Codes: A61N 2005/0663 Coloured light
• CPC Class Codes: A61N 5/0618 Psychological treatment
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21V 19/0055 by screwing
• CPC Class Codes: F21V 23/045 the sensor receiving a signal from a remote controller
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/28 using temperature feedback
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An LED lamp comprising a housing, a drive circuit, LED dies driven by the drive circuit, and an output-select controller to program the drive circuit to drive the LED dies in one of a pre-sleep configuration and a general lighting configuration. The LED dies comprise LED dies of a first spectral output having a peak wavelength between 500 nm and 600 nm and of a second spectral output having a peak wavelength greater than 600 nm, first blue LED dies having a peak wavelength between 420 nm and 480 nm, and second blue LED dies having a peak wavelength below 420 nm. The drive circuit operates each of the LED dies of the first and second spectral outputs and the second blue LED dies in the pre-sleep configuration, and the LED dies of the first and second spectral outputs and the first blue LED dies in the general lighting configuration.

Claims

1. A tunable LED lamp comprising:

a housing;

a drive circuit disposed within the housing and configured to electrically couple to a power source;

a plurality of LED dies mounted on a support coupled to the housing, wherein each of the plurality of LED dies is electrically coupled to and driven by the drive circuit; and

an output-select controller electrically coupled to the drive circuit to program the drive circuit to drive the LED dies in one of a plurality of light output configurations, the plurality of light output configurations comprising a pre-sleep configuration and a general lighting configuration;

wherein the plurality of LED dies comprises one or more LED dies of a first spectral output having a peak wavelength between 500 nm and 600 nm, one or more LED dies of a second spectral output having a peak wavelength greater than 600 nm, one or more first blue LED dies having a peak wavelength within the range from 420 nm to 480 nm, and one or more second blue LED dies having a peak wavelength below 420 nm;

wherein the drive circuit is configured to operate each of the LED dies of the first spectral output, the LED dies of the second spectral output, and the second blue LED dies in the pre-sleep lighting configuration; and

wherein the drive circuit is configured to operate each of the LED dies of the first spectral output, the LED dies of the second spectral output, and the first blue LED dies in the general lighting configuration.

2. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that light emitted by the second blue LED dies comprises not more than 10% of the spectral power of light emitted by the tunable LED lamp when in the pre-sleep lighting configuration.

3. The tunable LED lamp according to claim 2 wherein the drive circuit is configured to operate the plurality of LED dies such that light emitted by the LED dies of the first spectral output comprises 62% of the spectral power of light emitted by the tunable LED lamp and that light emitted by the LED dies of the second spectral output comprises 28% of the spectral power of light emitted by the tunable LED lamp when in the pre-sleep lighting configuration.

4. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that a color temperature of light emitted by the tunable LED lamp is at least 2,600 K when in the pre-sleep lighting configuration.

5. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that a color rendering index of light emitted by the tunable LED is at least 85 when in the pre-sleep lighting configuration.

6. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that a color rendering index of light emitted by the tunable LED is 87 when in the pre-sleep lighting.

7. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that a circadian-to-photopic ratio of light emitted by the tunable LED lamp is less than 0.10 when in the pre-sleep lighting configuration.

8. The tunable LED lamp according to claim 1 the drive circuit is configured to operate the plurality of LED dies such that a circadian-to-photopic ratio of light emitted by the tunable LED lamp is 0.06 when in the pre-sleep lighting configuration.

9. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that light emitted by the first blue LED dies comprises at least 25% of the spectral power of light emitted by the tunable LED lamp when in the general lighting configuration.

10. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that light emitted by the first blue LED dies comprises 30% of the spectral power of light emitted by the tunable LED lamp when in the general lighting configuration.

11. The tunable LED lamp according to claim 10 wherein the drive circuit is configured to operate the plurality of LED dies such that light emitted by the LED dies of the first spectral output comprises 60% of the spectral power of light emitted by the tunable LED lamp and that light emitted by the LED dies of the second spectral output comprises 10% of the spectral power of light emitted by the tunable LED lamp when in the general lighting configuration.

12. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that a color temperature of light emitted by the tunable LED lamp is at least 5,500 K when in the general lighting configuration.

13. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that a color rendering index of light emitted by the tunable LED lamp is at least 90 when in the general lighting configuration.

14. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that a circadian-to-photopic ratio of light emitted by the tunable LED lamp is at least 0.6 when in the general lighting configuration.

15. The tunable LED lamp according to claim 1 wherein the drive circuit is configured to operate the plurality of LED dies such that a circadian-to-photopic ratio of light emitted by the tunable LED lamp is 0.65 when in the general lighting configuration.

16. The tunable LED lamp according to claim 1 wherein the second blue LED dies have a peak wavelength of 415 nm.

17. The tunable LED lamp according to claim 1 wherein the first blue LED dies have a peak wavelength of 460 nm.

18. A tunable LED lamp comprising:

a housing

a drive circuit disposed within the housing and configured to electrically couple to a power source;

a plurality of LED dies mounted on a support coupled to the housing, wherein each of the plurality of LED dies is electrically coupled to and driven by the drive circuit; and

an output-select controller electrically coupled to the drive circuit to program the drive circuit to drive the LED dies in one of a plurality of light output configurations, the plurality of light output configurations comprising a pre-sleep configuration and a general lighting configuration;

wherein the plurality of LED dies comprises one or more LED dies of a first spectral output having a peak wavelength within the range from 500 nm to 600 nm, one or more LED dies of a second spectral output having a peak wavelength above 600 nm, one or more first blue LED dies having a peak wavelength at 460 nm, and one or more second blue LED dies having a peak wavelength at 415 nm;

wherein the drive circuit is configured to operate each of the LED dies of the first spectral output, the LED dies of the second spectral output, and the second blue LED dies in the pre-sleep lighting configuration such that light emitted by the second blue LED dies comprises not more than 10% of a spectral power of the light emitted by the tunable LED lamp; and

wherein the drive circuit is configured to operate each of the LED dies of the first spectral output, the LED dies of the second spectral output, and the first blue LED dies in the general lighting configuration such that light emitted by the first blue LED dies comprises 30%.

19. The tunable LED lamp according to claim 18 wherein the drive circuit is configured to operate the plurality of LED dies such that a circadian-to-photopic ratio of light emitted by the tunable LED lamp is 0.06 in the pre-sleep lighting configuration;

and wherein the drive circuit is configured to operate the plurality of LED dies such that the circadian-to-photopic ratio of light emitted by the tunable LED lamp is 0.65 when in the general lighting configuration.

20. The tunable LED lamp according to claim 18 wherein the drive circuit is configured to operate the plurality of LED dies such that light emitted by the LED dies of the first spectral output comprises 62% of the spectral power of light emitted by the tunable LED lamp and that light emitted by the LED dies of the second spectral output comprises 28% of the spectral power of light emitted by the tunable LED lamp;

and wherein in the general lighting configuration the drive circuit is configured to operate the plurality of LED dies such that light emitted by the LED dies of the first spectral output comprises 60% of the spectral power of light emitted by the tunable LED lamp and that light emitted by the LED dies of the second spectral output comprises 10% of the spectral power of light emitted by the tunable LED lamp when in the pre-sleep lighting configuration.

21. A tunable LED lamp comprising:

a housing

a drive circuit disposed within the housing and configured to electrically couple to a power source;

a plurality of LED dies mounted on a support coupled to the housing, wherein each of the plurality of LED dies is electrically coupled to and driven by the drive circuit; and

an output-select controller electrically coupled to the drive circuit to program the drive circuit to drive the LED dies in one of a plurality of light output configurations, wherein the plurality of light output configurations includes a pre-sleep configuration and a general lighting configuration;

wherein the plurality of LED dies comprises one or more LED dies of a first spectral output having a peak wavelength between 500 nm and 600 nm, one or more LED dies of a second spectral output having a peak wavelength greater than 600 nm, one or more first blue LED dies having a peak wavelength between 420 and 480 nm; and

one or more second blue LED dies having a peak wavelength below 420 nm;

wherein the drive circuit is configured to operate each of the LED dies of the first spectral output, the LED dies of the second spectral output, and the second blue LED dies in the pre-sleep lighting configuration such that a circadian-to-photopic ratio of light emitted by the tunable LED lamp is 0.06; and

wherein the drive circuit is configured to operate each of the LED dies of the first spectral output, the LED dies of the second spectral output, and the first blue LED dies in a general lighting configuration such the circadian-to-photopic ratio of light emitted by the tunable LED lamp is 0.65.