LED lamp for producing biologically-adjusted light

• US 9,693,414 B2
• Filed: 04/06/2016
• Issued: 06/27/2017
• Est. Priority Date: 12/05/2011
• Status: Active Grant

• Current Assignee: Healthe, Inc.
• Original Assignee: BioLogical Illumination, LLC
• Inventors: Bretschneider, Eric, Maxik, Fredric S., Bartine, David E.
• Primary Examiner(s): Chang, Daniel D
• Application Number:
  US15/092,154
• Publication Number:
  US 20160219671A1
• Time in Patent Office: 447 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 for producing biologically-adjusted light output comprising a base, a housing attached to the base, a drive circuit configured to electrically couple to a power source, and a plurality of LEDs. The drive circuit is configured to operate the plurality of LEDs such that a peak blue output intensity level, in a visible spectral output range of between 380 nm and 485 nm is between 0% and 10% of a relative spectral power of any other peaks in the visible spectral output above 485 nm.

Claims

1. An LED lamp for producing biologically-adjusted light output comprising:

a base;

a housing attached to the base;

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

a plurality of LEDs;

wherein the plurality of LEDs includes a mint LED die, the power spectrum of which has a notch or trough in the 460-490 nm region;

wherein the mint die exhibits a power spectrum in which the maximum intensity of radiant power in the 470-480 nm range is less than 2.5% of that of the peak intensity of the die;

wherein the drive circuit is configured to operate the plurality of LEDs such that a peak blue output intensity level, in a visible spectral output range of between 380 nm and 485 nm, is between 0% and 10% of a relative spectral power of any other peaks in the visible spectral output above 485 nm.

2. The LED lamp of claim 1 wherein the plurality of LEDs includes at least one of a mint LED and a blue LED.

3. The LED lamp of claim 2 wherein the plurality of LEDs includes a LED comprised by a die further comprising a photo-conversion material.

4. The tunable LED lamp of claim 1 wherein the mint die power spectrum has a notch or trough minimum centered at 470-475 nm.

5. The tunable LED lamp of claim 1 wherein the plurality of LEDs comprises red-orange LEDs, cyan LEDs, mint LEDs, and blue LEDs.

6. The tunable LED lamp of claim 5 wherein the plurality of LEDs includes a ratio of:

two red-orange LEDs;

to

three cyan LEDs;

to

three mint LEDs;

to

three blue LEDs.

7. The tunable LED lamp of claim 1 wherein the plurality of LEDs comprises an LED of a first spectral output having a peak intensity between 500 nm and 600 nm, an LED of a second spectral output having a peak intensity greater than 600 nm, a first blue LED having a peak intensity within the range from 420 nm to 480 nm, and a second blue LED having a peak intensity below 420 nm.

8. The tunable LED lamp of claim 7 wherein the first blue LED has a peak intensity at 480 nm.

9. The tunable LED lamp of claim 7 wherein the second blue LED has a peak intensity at 415 nm.

10. The tunable LED lamp of claim 1 wherein the plurality of LEDs comprises:

a first LED operable to emit light having a peak intensity at about 450 nm;

a second LED operable 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 wavelength within the range from 440 nm to 460 nm;

wherein the color conversion material is positioned in optical communication with the second LED.

11. The tunable LED lamp of claim 10 wherein the color conversion material is configured to emit light having a peak intensity within the range from 500 nm to 599 nm.

12. The tunable LED lamp of claim 10 wherein the plurality of LEDs comprises a ratio of first LEDs to second LEDs within the range from 1:

3 to 3;

1.

13. The tunable LED lamp of claim 10 where the LED lamp does not comprise an LED operable to emit light having a peak intensity at a wavelength greater than 600 nm.

14. The tunable LED lamp of claim 10 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.

15. The tunable LED lamp of claim 10 wherein light emitted by the LED lamp has a CRI #9 value of at least 40.

16. An LED lamp for producing biologically-adjusted light output comprising:

a base;

a housing attached to the base;

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

a ratio of blue LEDs having a peak intensity at about 450 nm to cyan LEDs having a peak intensity within the range from 475 nm to 495 nm within the range from 1;

3 to 3;

1;

wherein the drive circuit is configured to operate the plurality of LEDs such that a peak blue output intensity level, in a visible spectral output range of between 380 nm and 485 nm, is between 0% and 10% of a relative spectral power of any other peaks in the visible spectral output above 485 nm.

17. The LED lamp of claim 16 wherein the plurality of LEDs comprises:

a first LED operable to emit light having a peak intensity at 450 nm;

a second LED operable 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 wavelength within the range from 440 nm to 460 nm;

the color conversion material is positioned in optical communication with the second LED.