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Circadian rhythms entrainment enhancement device

專(zhuān)利號(hào)
US11071187B1
公開(kāi)日期
2021-07-20
申請(qǐng)人
Aleddra Inc.（US WA Renton）
發(fā)明人
Chia-Yiu Maa; Chun-Te Yu
IPC分類(lèi)
H05B47/11; H05B47/115; H05B45/00; A61N5/06; H05B45/10
技術(shù)領(lǐng)域
light,eml,melanopic,source,lux,lt1,spd,first,circadian,second
地域： WA WA Renton

摘要

A circadian entrainment enhancement device includes a housing, a first directional light source, a second directional light source, and a driver. During daytime, the driver turns on the first directional light source with a high melanopic ratio to enhance the daytime circadian entrainment of a user. During nighttime, the driver turns on the second directional light source with a low melanopic ratio to enhance the nighttime circadian entrainment of a user. A more advanced version of the present disclosure uses a light sensor, a memory module, and a computation module to calculate the necessary light output of the device by factoring the ambient light level into consideration. An even more advanced version of the present disclosure uses a distance sensor to adjust the light level of the light sources according to the distance between the device and the user.

說(shuō)明書(shū)

BACKGROUND Technical Field

The present disclosure pertains to the field of circadian devices and, more specifically, proposes a circadian entrainment enhancement device.

Description of Related Art

It is well known that circadian rhythm affects the behavior of animals, including human, and the circadian rhythm is entrained by the 24-hour light-dark cycle of sunlight. When the circadian rhythm is disrupted, there would be negative impact on the health of a person. Studies have shown that people now spend 90% of their time indoor under electrical light, are deprived of sunlight. If an environment is not well lit, thus not providing sufficient circadian stimulus, the biological alertness of an occupant in such environment may be impaired. Similarly, if an environment is over lit at night, the biological system of an occupant would remain in high alert and the occupant may have a difficulty to fall asleep. The sleep quality of this occupant may also be negatively affected.

權(quán)利要求

1
What is claimed is:1. A circadian entrainment enhancement device, comprisinga housing;a first directional light source; anda first driver,wherein:the housing houses the first directional light source and the first driver,the first driver is configured to drive the first directional light source to generate a fixed first light output,the first directional light source has a first melanopic ratio >0.80,the first directional light source is configured to provide at least 50 equivalent melanopic lux (EML) at 60 cm at a 0-degree lighting zone, andthe device is configured to shine a light of the first directional light source horizontally to eyes of a user.2. The device of claim 1, wherein the first directional light source has a spectral power distribution (SPD)>15% in a 440?490 nm wavelength range.3. The device of claim 1, wherein the first directional light source comprises one or more light emitting diodes (LEDs).4. The device of claim 1, wherein the first directional light source comprises one or more organic light emitting diodes (OLEDs).5. The device of claim 1, wherein a vertical beam angle of the device is less than 30 degrees with respect to a horizontal plane.6. The device of claim 1, wherein the device is disposed at least 30 cm from the eyes of the user.7. The device of claim 1, further comprising:a second directional light source; anda second driver,wherein:the housing further houses the second directional light source and the second driver,the second driver is configured to drive the second directional light source to generate a fixed second light output,the second directional light source has a second melanopic ratio <0.40,the second directional light source is configured to provide no more than 50 EML at 60 cm at the 0-degree lighting zone, andthe device is configured to shine a light of the second directional light source horizontally to the eyes of the user.8. The device of claim 7, wherein the second directional light source has a spectral power distribution (SPD)<3% in a 440?490 nm wavelength range.9. The device of claim 7, wherein a ratio of the SPD of the first directional light source in a 470?480 nm wavelength range to the SPD of the second directional light source in the 470?480 nm wavelength range is at least 10 to 1.10. The device of claim 7, wherein the first directional light source and the second directional light source are configured such that either of the first directional light source and the second directional light source is turned on at a time, but not simultaneously.11. The device of claim 7, wherein the second directional light source comprises one or more light emitting diodes (LEDs).12. The device of claim 7, wherein the second directional light source comprises one or more organic light emitting diodes (OLEDs).13. The device of claim 1, further comprising:a dimmer,wherein the first driver is a dimmable driver controllable via the dimmer to set the first light output of the first directional light source.14. The device of claim 7, further comprising:a dimmer,wherein the second driver is a dimmable driver controllable via the dimmer to set the second light output of the second directional light source.15. A circadian entrainment enhancement device, comprisinga housing;a first directional light source;a first tunable driver;a first memory module;a first computational module;a light sensor;wherein:the housing houses the first directional light source, the first tunable driver, the first memory module, the first computation module, and the light sensor;the first tunable driver is configured to drive the first directional light source to generate a variable first light output,the first directional light source has a first melanopic ratio R1>0.80,the light sensor is configured to measure a vertical lux LA of an ambient light with respect to the device,the first memory module is configured to store Illuminating Engineering Society (IES) data of the first directional light source and configuration information used by the first computational module,the first computational module is configured to set a melanopic ratio RA1 of the ambient light of the device,the first computational module is configured to set a first equivalent melanopic lux (EML) target to EMLT1,the first computation module is configured to calculate a first target lux LT1 of the first directional light source using the first melanopic ratio R1, the vertical lux LA of the ambient light, the melanopic ratio RA1 of the ambient light, the first EML target EMLT1, and the IES data of the first directional light source such that a combination of an EML from the ambient light and an EML of the first directional light source at a 0-degree lighting zone approximates the first EML target EMLT1,the first computation module is further configured to adjust the first tunable driver to set the light output of first directional light source to be the first target lux LT1 at the 0-degree lighting zone at zero distance, andthe device is configured to shine a light of the first directional light source horizontally to eyes of the user.16. The device of claim 15, further comprising:a distance sensor,wherein:the housing further houses the distance sensor,the distance sensor is configured to measure a distance D between the device and the user,the first computation module is configured to calculate the first target lux LT1 of the first directional light source using the first melanopic ratio R1, the vertical lux LA of the ambient light, the melanopic ratio RA1, of the ambient light, the first EML target EMLT1, the IES data of the first directional light source, and the distance D such that a combination of the EML from the ambient light and an EML of the first light source at the 0-degree lighting zone approximates the first EML target EMLT1, andthe first computation module is further configured to adjust the first tunable driver to set the light output of the first directional light source to meet the first target lux LT1 at the 0-degree lighting zone at the distance D.17. The device of claim 15, wherein the vertical lux LA is configured by the light source measuring a horizontal lux of the ambient light with respect to the device and the first computation module to convert the horizontal lux to the vertical lux LA using a conversion ratio.18. The device of claim 15, wherein the first directional light source has a spectral power distribution (SPD)>15% in a 440?490 nm wavelength range.19. The device of claim 15, wherein the first directional light source comprises one or more light emitting diodes (LEDs).20. The device of claim 15, wherein the first directional light source comprises one or more organic light emitting diodes (OLEDs).21. The device of claim 15, wherein a vertical beam angle of the device is less than 30 degrees with respect to a horizontal plane.22. The device of claim 15, further comprising:a second directional light source;a second tunable driver;a second memory module; anda second computational module,wherein:the housing further houses the second directional light source, the second tunable driver, the second memory module, and the second computational module,the second driver is configured to drive the second directional light source to generate a variable second light output,the second directional light source has a second melanopic ratio R2<0.40,the second memory module stores IES data of the second directional light source and configuration information used by the second computational module,the second computational module is configured to set a melanopic ratio RA2 of the ambient light of the device,the second computational module is configured to set a second EML target to EMLT2,the second computation module is configured to calculate the second target lux LT2 of the second directional light source using the second melanopic ratio R2, the vertical lux LA of the ambient light, the melanopic ratio RA2, of the ambient light, the second EML target EMLT2, and the IES data of the second directional light source a such that a combination of the EML from the ambient light and an EML of the second directional light source at the 0-degree lighting zone approximates the second EML target EMLT2,the second computation module is further configured to adjust the second tunable driver to set the light output of second directional light source to be the second target lux LT2 at the 0-degree lighting zone at zero distance, andthe device is configured to shine a light of the second directional light source horizontally to the eyes of the user.23. The device of claim 22, further comprising:a distance sensor,wherein:the housing further houses the distance sensor,the distance sensor is configured to measure a distance D between the device and the user,the second computation module is configured to calculate the second target lux LT2 of the second directional light source using the second melanopic ratio R2, the vertical lux LA of the ambient light, the melanopic ratio RA2, of the ambient light, the second EML target EMLT2, the IES data of the second directional light source, and the distance D such that a combination of the EML from the ambient light and an EML of the second light source at the 0-degree lighting zone approximates the second EML target EMLT2, andthe second computation module is further configured to adjust the second tunable driver to set the light output of second directional light source to meet the second target lux LT2 at the 0-degree lighting zone at the distance D.24. The device of claim 22, wherein the second directional light source has an SPD<3% in a 440?490 nm wavelength range.25. The device of claim 22, wherein a ratio of the SPD of the first directional light source in a 470?480 nm wavelength range to the SPD of the second directional light source in the 470?480 nm wavelength range is at least 10 to 1.26. The device of claim 22, wherein the first directional light source and the second directional light source are configured such that either of the first directional light source and the second directional light source is turned on at a time, but not simultaneously.27. The device of claim 22, wherein the second directional light source comprises one or more light emitting diodes (LEDs).28. The device of claim 22, wherein the second directional light source comprises one or more organic light emitting diodes (OLEDs).
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