Phototherapy lights
AssigneeOutside In (Cambridge) Ltd.
InventorStephen Bryce Hayes
Life of this patent
Estimating the term…
Abstract
This invention relates to phototherapy lights, in particular for a combination of Bright Light Therapy and Dawn Simulation. A phototherapy light source having two operational modes, a first dawn simulator mode; and a second, bright light therapy mode; the light comprising a controller coupled to a light source; and wherein, in said first mode said light source is controlled to provide variable illumination with a minimum light intensity of less than 1 lux at 50 centimeters, and in said second mode said light source is controlled to provide illumination with a light intensity of at least 1000 lux at 50 centimeters.
Claims9
A phototherapy light source having two operational modes,
- a first dawn simulator mode;
- and
- a second, bright light therapy mode;
- the light comprising:
- a light source comprising a plurality of light emitting diodes of different colours, said plurality of light emitting diodes being arranged to progressively vary an emitted spectrum of light from a first spectrum to a second spectrum, and
- a controller coupled to a light source;
- and
- wherein, in said first mode said light source is controlled to provide variable illumination with a minimum light intensity of less than 1 lux at 50 centimeters, and in said second mode said light source is controlled to provide illumination with a light intensity of at least 1000 lux at 50 centimeters,
- said first spectrum has dull red light spectrum, and
- said second spectrum has a colour of typical daylight sunshine and has greater overall intensity than the first spectrum, and wherein
- said phototherapy light source is arranged to provide in said first dawn simulator mode an illumination mode in which light from said light emitting diodes has substantially no light output below 560 nm,
- the phototherapy light configured to change a colour of said illumination in said dawn simulator mode such that the said illumination is redder at a lower illumination level than at a higher illumination level.
A phototherapy light, said phototherapy light comprising a plurality of light emitting diodes of different colours, said light emitting diodes configured to provide at least two levels of illumination, a first level of illumination and a second, lower level of illumination with a light intensity of less than 1 lux at 50 centimeters, and wherein said illumination of said second, lower level is redder than said illumination at said first level, said plurality of light emitting diodes being arranged to progressively vary an emitted spectrum of light from a first spectrum having said second illumination level to a second spectrum having said first illumination level, wherein said first spectrum is a dull red light spectrum, and said second spectrum has a colour of typical daylight sunshine and has greater overall intensity than the first spectrum, and wherein said progressive variation of said phototherapy light has an illumination mode in which light from said light emitting diodes has substantially no light output below 560 nm, the phototherapy light configured to change a colour of said illumination in a dawn simulator mode such that the said illumination is redder at a lower illumination level than at a higher illumination level.
Dependencies are inferred from the claim text.