LED lamp for producing biologically-adjusted light including a cyan LED

• US 9,913,341 B2
• Filed: 03/11/2016
• Issued: 03/06/2018
• 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., Bretschneider, Eric
• Primary Examiner(s): Chang, Daniel D
• Application Number:
  US15/067,364
• Publication Number:
  US 20160193478A1
• Time in Patent Office: 725 Days
• Field of Search: 315113, 315294, 315307, 315308
• CPC Class Codes: A61M 2021/0044 by the sight sense
• 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 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61N 2005/0651 Diodes
• 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: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 23/005 the substrate is supporting also the light source
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2105/12 characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2113/17 forming a single encapsulated light source
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/20 : Controlling the colour of the light
• CPC Class Codes: H05B 45/31 : Phase-control circuits
• 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 configured to electrically couple to a power source, and an LED package that is electrically coupled to and driven by the drive circuit. The LED package comprises a first LED configured to emit light having a peak intensity of about 450 nm, a second LED configured to emit light having a peak intensity within the range from 475 nm to 495 nm, and a color conversion material configured to perform a Stokes shift on light having a wavelength within the range from 440 nm to 460 nm.

Claims

1. An LED lamp comprising:

a housing;

a drive circuit configured to electrically couple to a power source; and

an LED package that is electrically coupled to and driven by the drive circuit, the LED package comprising;

a first LED configured to emit light having a peak intensity of about 450 nm,

a second LED configured to emit light having a peak intensity within the range from 475 nm to 495 nm, and

a color conversion material configured to perform a Stokes shift on light having a wavelength within the range from 440 nm to 460 nm and also configured to emit light having a peak intensity within the range from 500 nm to 599 nm;

wherein the LED lamp is configured to self-tune to generate a light output spectrum depending on at least one of the lamp'"'"'s location, the lamp'"'"'s use, and the lamp'"'"'s ambient environment; and

wherein the lamp is operable within a pre-sleep configuration, a phase-shift configuration, and a general lighting configuration.

2. The LED lamp according to claim 1 wherein light emitted by the LED lamp is configured to emit light that suppresses melatonin secretion in an observer.

3. The LED lamp according to claim 1 wherein the LED lamp does not comprise an LED configured to emit light having a peak intensity at a wavelength greater than 600 nm.

4. The LED lamp according to claim 1 wherein the LED lamp does not comprise a color conversion material configured to emit light having a peak intensity at a wavelength greater than 600 nm.

5. The LED lamp according to claim 1 wherein the LED package consists of:

a first LED configured to emit light having a peak intensity of about 450 nm;

a second LED configured to emit light having a peak intensity within the range from 475 nm to 495 nm; and

a color conversion material configured to perform a Stokes shift on light having a wavelength within the range from 440 nm to 460 nm and also configured to emit light having a peak intensity within the range from 500 nm to 599 nm.

6. The LED lamp according to claim 1 comprising a plurality of LED packages.

7. The LED lamp according to claim 6 wherein the plurality of LED packages consists of LED packages comprising:

a first LED configured to emit light having a peak intensity of about 450 nm;

a second LED configured to emit light having a peak intensity within the range from 475 nm to 495 nm; and

a color conversion material configured to perform a Stokes shift on light having a wavelength within the range from 440 nm to 460 nm and also configured to emit light having a peak intensity within the range from 500 nm to 599 nm.

8. The LED lamp according to claim 6 wherein the plurality of LED packages consists of LED packages consisting of:

a first LED configured to emit light having a peak intensity of about 450 nm;

a second LED configured to emit light having a peak intensity within the range from 475 nm to 495 nm; and

a color conversion material configured to perform a Stokes shift on light having a wavelength within the range from 440 nm to 460 nm and also configured to emit light having a peak intensity within the range from 500 nm to 599 nm.

9. The LED lamp according to claim 1 wherein light emitted by the LED lamp has a CRI of at least 90.

10. The LED lamp according to claim 1 wherein light emitted by the LED lamp has a CCT of less than 5000K.

11. The LED lamp according to claim 1 wherein light emitted by the LED lamp has a CRI #9 value of at least 40.

12. The LED lamp according to claim 11 wherein light emitted by the LED lamp has a CCT of less than 4000K.

13. The LED lamp according to claim 1 wherein the second LED configured to emit light having a peak intensity within the range from 480 nm to 490 nm.

14. The LED lamp according to claim 1 wherein the housing is configured to facilitate the attachment of the LED lamp to a troffer light fixture.

15. The LED lamp according to claim 1 further comprising an output select controller electrically coupled to the drive circuit to program the drive circuit to drive the LED package in one of a plurality of light output configurations, wherein the plurality of light output configurations includes a general lighting configuration and a phase-shift configuration.

16. The LED lamp according to claim 15 wherein light output in the phase-shift configuration has a peak intensity within the range from 475 nm to 490 nm that is greater than a peak intensity within the range from 475 nm to 490 nm of the light output in the general lighting configuration.

17. An LED lamp comprising:

a housing;

a drive circuit configured to electrically couple to a power source; and

a plurality of LED packages that are electrically coupled to and driven by the drive circuit, each LED package of the plurality of LED packages comprising;

a first LED configured to emit light having a peak intensity of about 450 nm,

a second LED configured to emit light having a peak intensity within the range from 475 nm to 495 nm, and

a color conversion material configured to perform a Stokes shift on light having a wavelength within the range from 440 nm to 460 nm and also configured to emit light having a peak intensity within the range from 500 nm to 599 nm;

wherein the LED lamp does not comprise an LED or a color conversion material configured to emit light having a wavelength greater than 600 nm; and

wherein light emitted by the LED lamp has a CRI of at least 90;

wherein the LED lamp is configured to self-tune to generate a light output spectrum depending on at least one of the lamp'"'"'s location, the lamp'"'"'s use, and the lamp'"'"'s ambient environment; and

wherein the lamp is operable within a pre-sleep configuration, a phase-shift configuration, and a general lightning configuration.

18. The LED lamp according to claim 17 wherein light emitted by the LED lamp has a CCT of less than 5000K and a CRI #9 value of at least 40.

19. An LED lamp comprising:

a housing;

a drive circuit configured to electrically couple to a power source; and

an LED package that is electrically coupled to and driven by the drive circuit, the LED package consisting of;

a first LED configured to emit light having a peak intensity of about 450 nm,

a second LED configured to emit light having a peak intensity within the range from 475 nm to 490 nm, and

a color conversion material configured to perform a Stokes shift on light having a wavelength within the range from 440 nm to 460 nm and also configured to emit light having a peak intensity within the range from 500 nm to 599 nm;

wherein light emitted by the LED lamp has a CRI of at least 90, a CRI #9 value of at least 40, and a CCT of less than 4000K;

wherein the LED lamp is configured to self-tune to generate a light output spectrum depending on at least one of the lamp'"'"'s location, the lamp'"'"'s use, and the lamp'"'"'s ambient environment; and

wherein the lamp is operable within a pre-sleep configuration, a phase-shift configuration, and a general lighting configuration.