Systems and methods for controlling the spectral content of LED lighting devices

• US 10,595,376 B2
• Filed: 05/31/2017
• Issued: 03/17/2020
• Est. Priority Date: 09/13/2016
• Status: Active Grant

• Current Assignee: Biological Innovation & Optimization Systems, LLC
• Original Assignee: Biological Innovation & Optimization Systems, LLC
• Inventors: Soler, Robert, Thosteson, Eric
• Primary Examiner(s): Cox, Thaddeus B
• Application Number:
  US15/609,294
• Publication Number:
  US 20180077767A1
• Time in Patent Office: 1,021 Days
• CPC Class Codes: A61M 2021/0027 by the hearing sense
• CPC Class Codes: A61M 2021/0044 by the sight sense
• 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: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2205/587 Lighting arrangements
• CPC Class Codes: A61N 2005/0651 Diodes
• CPC Class Codes: A61N 2005/0663 Coloured light
• CPC Class Codes: A61N 5/0618 Psychological treatment
• CPC Class Codes: F21S 6/003 for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
• CPC Class Codes: F21V 1/00 Shades for light sources , i.e. lampshades for table, floor, wall or ceiling lamps
• 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 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/16 by timing means
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

Luminaries, fixtures, systems and methods of providing both spectrally and spatially targeted illumination are disclosed. Intelligent lighting systems with programmable interfaces for customizing spectral and spatial light output to an individual user are also disclosed. Lighting fixtures including table and floor lamps with adjustable spectral output designed to coordinate with the time of day and human circadian rhythms are described. Adjustable light distribution units that provide for both indirect lighting and task lighting that may be independently varied with respect to color so as to illuminate and facilitate circadian rhythm regulation are also disclosed.

Claims

1. A lighting device that provides adjustable spectral and spatial illumination to facilitate or coordinate with human circadian rhythms comprising:

a first illumination source comprising an LED of a first color that generates a first light output with a melanopic ratio of greater than 0.8;

a second illumination source comprising an LED of a second color that generates a second light output with a melanopic ratio of less than 0.8;

a light distribution unit for directing and distributing illumination generated by the first and second illumination sources wherein at least one of said first illumination source and said second illumination source is proximal to said light distribution unit and wherein the first and second illumination sources are oriented relative to one another such that their respective light outputs are directed in different directions.

2. The lighting device of claim 1 wherein the first light output of the first illumination source and the second light output of the second illumination source are generally in opposite directions.

3. The lighting device of claim 1 wherein the first light output from the first illumination source is generally directed upward and away from a floor or lower portion of a room or other space and results in indirect lighting from above and wherein the second light output from the second illumination source is generally directed downward towards a floor or lower portion of a room or other space.

4. The lighting device of claim 1 wherein the light distribution unit is edge-lit by the first illumination source and the second illumination source.

5. The lighting device of claim 1 wherein said first illumination source has a melanopic ratio of greater than about 1.0 and the second illumination source has a melanopic ratio of less than about 0.5.

6. The lighting device of claim 1 further comprising a control interface for independently adjusting the first light output of the LED of the first color and the second light output of the LED of the second color, and whereby the lighting device outputs a melanopic flux during the daytime that is higher than at nighttime.

7. The lighting device of claim 1 wherein:

the first illumination source is affixed to a lower portion of the light distribution unit, with the first light output oriented in an upward direction; and

the second illumination source is affixed to an upper portion of the light distribution unit, with the second light output oriented in a downward direction.

8. The lighting device of claim 1 wherein the first color has a color temperature greater than 4000 K and the second color has a color temperature less than 2700 K.

9. The lighting device of claim 1 wherein the lighting device is a shade or diffuser.

10. The lighting device of claim 1 further comprising a control interface that varies spectral intensities of the first light output and the second light output.

11. The lighting device of claim 1 further comprising a control interface that varies a spatial direction, orientation and distribution of light emitted by the lighting device.