Illumination device and method for reducing sleep inertia or controlling alertness
First Claim
1. An illumination device arranged for reducing sleep inertia and/or for increasing alertness of a human being comprising:
- one or more light sources for generating a first illumination output and a second illumination output, wherein the first illumination output comprises;
light with a dominant wavelength in the range of 590-770 nm, orwhite light with a color temperature below 4100 K,and the second illumination output comprises;
light with a dominant wavelength in the range of 400-560 nm, orwhite light with a color temperature above 4900 K; and
a controller configured for controlling said one or more light sources to implement an exposure of said eye of said human being to said first illumination output during a first time interval and to implement an initial exposure of said eye to said second illumination output during a second time interval such that said second illumination output is introduced essentially instantaneously, wherein said second time interval terminates at a later point in time than said first time interval, wherein at least one of the first and second time interval is equal to or less than 60 seconds.
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Accused Products
Abstract
The invention relates to a method and an illumination device arranged for reducing sleep inertia and/or for controlling alertness of a human being. The illumination device is arranged for reducing sleep inertia and/or controlling alertness by light radiation. The illumination device comprises one or more light sources for generating a first illumination output and a second illumination output. The first illumination output comprises light with a dominant wavelength in the range of 590-770 nm. The second illumination output comprises light with a dominant wavelength in the range of 400-560 nm. Thus, colored light is used. Alternatively, the first illumination output comprises white light with a color temperature below 4100 K, i.e. warm white light. The second color temperature then comprises white light with a color temperature above 4900 K. The illumination device comprises a controller configured for controlling the one or more light sources to expose said eye of said human being to the first illumination output during a first time interval and to the second illumination output during a second time interval. The second time interval terminates at a later point in time than the first time interval. The time intervals are selected such that at least one of the first and second time interval is less than 60 seconds.
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Citations
18 Claims
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1. An illumination device arranged for reducing sleep inertia and/or for increasing alertness of a human being comprising:
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one or more light sources for generating a first illumination output and a second illumination output, wherein the first illumination output comprises; light with a dominant wavelength in the range of 590-770 nm, or white light with a color temperature below 4100 K, and the second illumination output comprises; light with a dominant wavelength in the range of 400-560 nm, or white light with a color temperature above 4900 K; and a controller configured for controlling said one or more light sources to implement an exposure of said eye of said human being to said first illumination output during a first time interval and to implement an initial exposure of said eye to said second illumination output during a second time interval such that said second illumination output is introduced essentially instantaneously, wherein said second time interval terminates at a later point in time than said first time interval, wherein at least one of the first and second time interval is equal to or less than 60 seconds. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An illumination device arranged for reducing sleep inertia and/or for increasing alertness of a human being comprising:
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one or more light sources for generating a first illumination output and a second illumination output, wherein the first illumination output comprises; light with a dominant wavelength in the range of 590-770 nm, or white light with a color temperature below 4100 K, and the second illumination output comprises; light with a dominant wavelength in the range of 400-560 nm, or white light with a color temperature above 4900 K; and a controller configured for controlling said one or more light sources to expose said eye of said human being to said first illumination output during a first time interval and to said second illumination output during a second time interval, wherein said second time interval terminates at a later point in time than said first time interval, and wherein at least one of said first and second time intervals are less than one second. - View Dependent Claims (9, 10)
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11. An illumination device arranged for reducing sleep inertia and/or for increasing alertness of a human being comprising:
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one or more light sources for generating a first illumination output and a second illumination output, wherein the first illumination output comprises; light with a dominant wavelength in the range of 590-770 nm, or white light with a color temperature below 4100 K, and the second illumination output comprises; light with a dominant wavelength in the range of 400-560 nm, or white light with a color temperature above 4900 K; and a controller configured for controlling said one or more light sources to expose said eye of said human being to said first illumination output during a first time interval and to said second illumination output during a second time interval, wherein said second time interval terminates at a later point in time than said first time interval, wherein at least one of the first and second time interval is equal to or less than 60 seconds, and wherein said controller is configured for controlling said one or more light sources to temporarily and essentially stop illumination output to generate a dark third time interval between said first illumination output and said second illumination output.
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12. A method for obtaining at least one of the following effects for a human being:
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reducing sleep inertia; increasing alertness; phase shifting;
ortherapeutic effect; the method comprising the steps of; implementing an exposure, during a first time interval, of an eye of said human being to a first illumination output comprising light with a dominant wavelength in the range of 590-770 nm, or white light with a color temperature below 4100 K implementing an initial exposure, during a second time interval, of the eye of said human being to a second illumination output such that said second illumination output is introduced essentially instantaneously, said second illumination output comprising; light with a dominant wavelength in the range of 400-560 nm, or white light with a color temperature above 4900 K said second time interval terminating at a later point in time than said first time interval. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification