Wavelength sensing lighting system and associated methods

• US 10,462,874 B2
• Filed: 02/13/2019
• Issued: 10/29/2019
• Est. Priority Date: 10/07/2011
• Status: Active Grant

• Current Assignee: Environmental Light Technologies Corporation
• Original Assignee: Environmental Light Technologies Corporation
• Inventors: Maxik, Fredric S., Bretschneider, Eric, Medelius, Pedro, Bartine, David, Soler, Robert, Flickinger, Gregory
• Primary Examiner(s): Phan, Hanh
• Application Number:
  US16/274,690
• Publication Number:
  US 20190182923A1
• Time in Patent Office: 258 Days
• Field of Search: 398172, 398118, 398119, 398127, 398128, 398130, 398135, 398136, 398 33, 398 34, 398169, 398170, 398 25, 398182, 398183, 398202, 398209, 398103, 398115, 398189, 315291, 315293, 315294, 315152, 315312, 315307, 315308, 315153, 315185 R, 315185 S, 362231, 362545, 362555, 362234, 362253
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H04B 10/07 Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
• CPC Class Codes: H04B 10/116 Visible light communication
• CPC Class Codes: H04B 10/43 using a single component as both light source and receiver, e.g. using a photoemitter as a photoreceiver
• CPC Class Codes: H04N 23/56 provided with illuminating means
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 45/22 using optical feedback
• CPC Class Codes: H05B 45/24 using electrical feedback from LEDs or from LED modules
• 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 47/195 the transmission using visible or infrared light
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A lighting system comprising a light source operable to emit a source light, a sensor operable to sense environmental light from an environment, and a controller operatively connected to each of the sensor and the light source and configured to analyze the environmental light sensed by the sensor to at least one of detect and generate data relating to a condition of the environment, the data being transmittable in a transmitted data light. The sensor is operable to sense the presence or absence of a dominant wavelength associated with the environmental light. Additionally, the controller is operable to correlate the dominant wavelength with a substance, the controller is configured to detect a level of the dominant wavelength correlated with the substance, and the controller is configured to operate the lighting system to generate an alert based upon the detected level of the dominant wavelength.

Claims

1. A lighting system comprising:

a light source operable to emit a source light;

a sensor configured to sense environmental light from an environment; and

a controller coupled to each of the sensor and the light source and configured to analyze the environmental light sensed by the sensor to at least one of detect and generate data relating to a condition of the environment, the data being transmittable in a transmitted data light;

wherein the sensor is configured to sense the presence or absence of a dominant wavelength associated with the environmental light;

wherein the controller is configured to correlate the dominant wavelength with a substance;

wherein the controller is configured to detect a level of the dominant wavelength correlated with the substance; and

wherein the controller is configured to operate the lighting system to generate an alert based upon the detected level of the dominant wavelength.

2. The lighting system according to claim 1 wherein:

the controller is configured to establish a normal level of the dominant wavelength correlated with the substance; and

the controller is configured to determine if a difference between the normal level and the detected level of the dominant wavelength correlated with the substance is above a threshold level.

3. The lighting system according to claim 2 wherein the controller is configured to operate the lighting system to generate the alert based upon the difference relative to the threshold level.

4. The lighting system according to claim 2 wherein the lighting system is configured to operate within a network of lighting systems;

wherein the controller is configured to compare the difference between the normal level and the detected level of the dominant wavelength correlated with the substance with information included in a memory of another lighting system within the network.

5. The lighting system according to claim 1 wherein the controller is configured to determine whether light emitted by the source light and reflected by the substance includes the environmental light.

6. The lighting system according to claim 1 wherein the light source includes a conversion material operable to receive light reflected by the substance and emit a converted environmental light.

7. The lighting system according to claim 6 wherein:

the sensor is configured to sense the converted environmental light;

the controller is configured to determine a detected level of the converted environmental light; and

the controller is configured to determine if a difference between the normal level of the dominant wavelength correlated with the substance and the detected level of the converted environmental light is above a threshold.

8. The lighting system according to claim 7 wherein the controller is configured to operate the lighting system to generate an alert responsive to determining the difference between the normal level of the dominant wavelength correlated with the substance and the detected level of the converted environmental light is above the threshold level.

9. The lighting system according to claim 7 wherein the lighting system is configured to operate with a network of lighting systems;

wherein the controller is configured to compare the difference between the normal level of the dominant wavelength correlated with the substance and the detected level of the converted environmental light with information included in a memory of another lighting system within the network.

10. The system according to claim 1 wherein the light source includes a conversion material configured to absorb at least a portion of the source light emitted by the light source and emit a converted light.

11. A lighting system comprising:

an array of light sources, each light source configured to emit illuminating light;

a sensor coupled to the array of light sources and configured to sense environmental light from an environment; and

a controller coupled to the sensor and the array of light sources, and configured to analyze the environmental light sensed by the sensor to at least one of detect and generate data relating to a condition of the environment, the data being transmittable in a transmitted data light;

wherein the sensor is configured to sense the presence or absence of a dominant wavelength associated with the environmental light;

wherein the controller is configured to correlate the dominant wavelength with a substance;

wherein the controller is configured to detect a level of the dominant wavelength correlated with the substance; and

wherein the controller is configured to operate the array of light sources to generate an alert based upon the detected level of the dominant wavelength.

12. The lighting system according to claim 11 wherein:

the controller is configured to establish a normal level of the dominant wavelength correlated with the substance; and

the controller is configured to determine if a difference between the normal level and the detected level of the dominant wavelength correlated with the substance is above a threshold level.

13. The lighting system according to claim 12 wherein the controller is configured to operate the lighting system to generate the alert based upon the difference relative to the threshold level.

14. The lighting system according to claim 12 wherein the lighting system is configured to operate within a network of lighting systems;

and wherein the controller is configured to compare the difference between the normal level and the detected level of the dominant wavelength correlated with the substance with information included in a memory of another lighting system within the network.

15. The lighting system according to claim 11 wherein the controller is configured to determine whether light emitted by the source light and reflected by the substance includes the environmental light.

16. The lighting system according to claim 11 wherein the array of light sources includes a conversion material operable to receive light reflected by the substance and emit a converted environmental light.

17. The lighting system according to claim 16 wherein:

the sensor is configured to sense the converted environmental light;

the controller is configured to determine a detected level of the converted environmental light; and

the controller is configured to determine if a difference between the normal level of the dominant wavelength correlated with the substance and the detected level of the converted environmental light is above a threshold.

18. The lighting system according to claim 17 wherein the controller is configured to operate the array of light sources to generate an alert responsive to determining the difference between the normal level of the dominant wavelength correlated with the substance and the detected level of the converted environmental light is above the threshold level.

19. The lighting system according to claim 17 wherein the lighting system is configured to operate within a network of lighting systems;

and wherein the controller is configured to compare the difference between the normal level of the dominant wavelength correlated with the substance and the detected level of the converted environmental light with information included in a memory of another lighting system within the network.

20. The system according to claim 11 wherein the array of light sources includes a conversion material configured to absorb at least a portion of the source light emitted by the light sources and emit a converted light.