Lighting device and method for producing sequential lighting stimuli
First Claim
1. A lighting device comprising:
- a) at least one light source arranged to generate light;
b) an accommodating device having an at least partly translucent external boundary arranged to accommodate the at least one light source; and
c) a controller for controlling light output from the accommodating device, where1. a first part of the external boundary and the at least one light source are adapted to provide, through the first part of the external boundary, a first flux of a first type of light having a color and a first luminous intensity;
2. a second part of the external boundary and the at least one light source are adapted to provide, through the second part of the external boundary, a second flux of a second type of light corresponding to white light and having a second luminous intensity;
3. the controller;
(i) when triggered, effects said provision of the first type of light, such that the color initially has a dominant wavelength in the range of 580 to 770 nm and the first luminous intensity progressively increases, and (ii) subsequent to said triggering, progressively increases the second luminous intensity of the second type of light.
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Abstract
The invention provides a lighting device (1) comprising one or more light sources (10) arranged to generate light, an accommodating device (5) having an external boundary (2) which is at least partly translucent and is arranged to accommodate the one or more light sources and a controller (40). The lighting device can generate two types of light. One or more lighting parameters selected from the group consisting of the first luminous intensity of the first type of light, the second luminous intensity of the second type of light, the color point of the first type of light and the color point of the second type of light can be controlled. This allows task lighting and atmosphere lighting. The invention is also directed to a method of providing a wake-up stimulus by means of such a lighting device.
35 Citations
15 Claims
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1. A lighting device comprising:
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a) at least one light source arranged to generate light; b) an accommodating device having an at least partly translucent external boundary arranged to accommodate the at least one light source; and c) a controller for controlling light output from the accommodating device, where 1. a first part of the external boundary and the at least one light source are adapted to provide, through the first part of the external boundary, a first flux of a first type of light having a color and a first luminous intensity; 2. a second part of the external boundary and the at least one light source are adapted to provide, through the second part of the external boundary, a second flux of a second type of light corresponding to white light and having a second luminous intensity; 3. the controller;
(i) when triggered, effects said provision of the first type of light, such that the color initially has a dominant wavelength in the range of 580 to 770 nm and the first luminous intensity progressively increases, and (ii) subsequent to said triggering, progressively increases the second luminous intensity of the second type of light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A lighting device comprising:
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a) at least one light source arranged to generate light; and b) a controller connected to the at least one light source; where the at least one light source is arranged to provide a first flux of a first type of light having a color and a first luminous intensity and to provide a second flux of a second type of light corresponding to white light and having a second luminous intensity; and where the controller;
(i) when triggered, effects said provision of the first type of light such that the color initially has a dominant wavelength in the range of 580 to 770 nm and the first luminous intensity progressively increases, and (ii) subsequent to said triggering, progressively increases the second luminous intensity of the second type of light.
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Specification