Control device, wearable device and lighting system for light therapy purposes

• US 9,579,521 B2
• Filed: 01/13/2011
• Issued: 02/28/2017
• Est. Priority Date: 01/21/2010
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Ferraz Rigo, Christina, Geurts, Lucas Jacobus Franciscus, Djajadiningrat, Johan Partomo
• Primary Examiner(s): Crandall, Lynsey
• Assistant Examiner(s): JENNESS, NATHAN JAY
• Application Number:
  US13/522,063
• Publication Number:
  US 20120330387A1
• Time in Patent Office: 2,238 Days
• Field of Search: 607 88- 91, 128/898
• US Class Current: 1/1
• CPC Class Codes: A61N 2005/0642 Irradiating part of the body at a certain distance
• CPC Class Codes: A61N 2005/0662 Visible light
• CPC Class Codes: A61N 5/0618 Psychological treatment
• 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 47/19 via wireless transmission
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The control device for controlling a therapy light source including an input for receiving information on an intensity and/or amount of light a person has been exposed to from a wearable device that can connect to the control device via the input. The control device further includes an output for controlling at least one therapy light source that can be connected to the control device. A control unit of the control device is designed to control a connected therapy light source dependent on the information on the intensity and/or amount of light the person has been exposed to. A wearable device that is suited to operate in combination with the control device includes a light sensor for detecting an intensity of received light. It further comprises a storage unit connected to the light sensor for storing at least one value related to the measured intensity of the received light.

Claims

1. A lighting system for controlling a light source, the lighting system comprising:

a wearable device including a light sensor, the wearable device being configured to detect at least one of an intensity and an amount of light a person has received from two different light sources with a first one of the two different light sources being a therapy light source and a second one of the two different light sources being a white light source, and configured to produce at least one value indicative of the detected at least one of the intensity and amount of light a person has received from the two different light sources;

a control unit operably coupled to the wearable device and configured to determine control signals to control intensity and color composition produced by the therapy and white light sources dependent on the at least one value received from the wearable device to compensate for a visible light deficiency, with the control unit being further configured to adjust the determined control signals that are dependent on the at least one value to provide a total desired amount of blue light by keeping an amount of blue light produced during nighttime below an amount required to compensate for the deficiency and correspondingly increasing the blue light produced during daytime to account for a reduced amount of blue light produced during the nighttime and thereby provide the total desired amount of blue light; and

an output for controlling the therapy and white light sources, operably coupled to the control device, wherein the output comprises a wireless transmitter for wirelessly transmitting the adjusted control signals to the therapy and white light sources.

2. The lighting system as set forth in claim 1, wherein the control unit is configured to regulate a ratio of intensities between the two different light sources.

3. The lighting system as set forth in claim 1, wherein the wireless transmitter is configured for wirelessly transmitting the adjusted control signals to light sources that are equipped with an internal power controller.

4. The lighting system as set forth in claim 1, wherein the control unit is configured to control at least one of the intensity and an operating time of the wirelessly connected therapy and white light sources based on the at least one value.

5. The lighting system as set forth in claim 1, wherein the wearable device is further configured to transmit to the control unit the at least one value automatically in response to the wearable device entering within a communication range of the control unit.

6. The lighting system as set forth in claim 5, wherein the wearable device is further configured to store the at least one value prior to transmission to the control unit.

7. The lighting system as set forth in claim 1, comprising a coupling to electrically connect the therapy and white light sources to one of a common light bulb socket or a common fluorescent lamp socket.

8. The lighting system as set forth in claim 1, wherein the light sensor comprises at least two light sensors, the wearable device being further configured to add together the at least one of the intensity and the amount of light the person has been exposed to from the two different light sources with different weighting factors for each of the at least two light sensors which each distinguish one of the two different light sources to account for a therapeutic value of the two different light sources to produce the at least one value.

9. A lighting system for controlling a light source, the lighting system comprising:

a wearable device including

a light sensor configured to detect an intensity of received light from each of two light sources, with a first one of the two light sources being a blue light source and a second one of the two light sources being a white light source and configured to produce at least one value indicative of the intensity of light a person has received from the two light sources, and

a storage unit operably coupled to the light sensor for storing the at least one value related to at least the detected intensity of the received light from the two light sources; and

a controller wirelessly coupled to the storage unit and the blue and white light sources and configured to determine control signals to control intensity and color composition produced by the blue and white light sources based on the at least one value to compensate for a visible light deficiency, with the control unit being further configured to adjust the determined control signals that are dependent on the at least one value to provide a total desired amount of blue light by keeping an amount of blue light produced during nighttime below an amount required to compensate for the deficiency and correspondingly increasing the blue light produced during daytime to account for a reduced amount of blue light produced during the nighttime and thereby provide the total desired amount of blue light based on the adjusted control signals.

10. The wearable device as set forth in claim 9, wherein the light sensor is a single sensor sensitive to modulated blue light in the wavelength range between 445 and 480 nm and configured to distinguish the modulated blue light from the white light.

11. The wearable device as set forth in claim 9, wherein the wearable device is configured to store a sequence of intensity values determined by the light sensor at regular time intervals.

12. The wearable device as set forth in claim 9, wherein the wearable device is configured to measure and store at regular time intervals the at least one value for an accumulated amount of light over a given time interval together with a value related to a time of the measurement such that a sequence of the at least one values is measured and stored together with the value related to the time of the measurements.

13. The wearable device as set forth in claim 12, wherein the at least one value indicates a therapeutic value contributed from the blue light source and the white light source.

14. A lighting system for light therapy purposes, comprising:

a therapy light source and a white light source with each producing separate light;

a control device configured to wirelessly control the therapy and white light sources; and

a wearable device operably coupled to the control device, the wearable device including a light sensor configured to detect at least one of an intensity and an amount of light a person has received from each of therapy and white light and configured to produce at least one value indicative of the at least one of the intensity and amount of light a person has received from the therapy and white light sources,

the control device including

an input for receiving the at least one value from the wearable device;

an output for wirelessly controlling the therapy and white light sources to compensate for a visible light deficiency, wherein the control device is configured to wirelessly communicate with the therapy and white light sources; and

a control unit for controlling intensity and color composition produced by the therapy and white light sources dependent on the at least one value received from the wearable device, with the control unit being configured to adjust determined control signals that are dependent on the at least one value to provide a total desired amount of blue light by keeping an amount of blue light produced during nighttime below an amount required to compensate for the deficiency and correspondingly increasing the blue light produced during daytime to account for a reduced amount of blue light produced during the nighttime and thereby provide the total desired amount of blue light, wherein the output comprises a wireless transmitter for wirelessly transmitting the adjusted control signals to the therapy and white light sources.

15. The lighting system as set forth in claim 14, wherein connections between the control device and the wearable device are wireless connections.

16. The lighting system as set forth in claim 14, wherein the therapy and white light sources comprise at least two light emitting diodes within a common housing with a first one of the at least two light emitting diodes emitting light in the wavelength range between 445 and 480 nm and a second one of the two light emitting diodes emitting white light.

17. The lighting system as set forth in claim 14, wherein the wearable device is further configured to transmit to the control device the at least one value automatically in response to the wearable device entering within a communication range of the control unit.

18. The lighting system as set forth in claim 14, the wearable device comprising:

a storage unit operably coupled to the light sensor for storing the at least one value.

19. The lighting system as set forth in claim 18, wherein the light sensor is a single sensor configured to detect and distinguish between light in the blue color wavelength in the wavelength range between 445 and 480 nm and light from the white light source.

20. The lighting system as set forth in claim 18, wherein the at least one value indicates a therapeutic value of both the therapy and white light source.