Indoor light balancing
First Claim
1. Illumination system, comprising:
- a window having controllable transmittance,a light guide system arranged for transferring light from at least one light guide input to at least one light guide output;
said at least one light guide output being located in a same space as said window, but at a distance from said window,wherein light passing through said light guide system does not pass through said window and light passing through said window does not pass through said light guide system, said light guide system being arranged for illuminating said same space by light passing said light guide system; and
balancing arrangement having a control unit arranged for balancing said transmittance of said window and a light throughput of said light guide system,wherein said balancing changes an amount of light passing through said light guide system relative to an amount of light passing through said window.
1 Assignment
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Accused Products
Abstract
An illumination system (1) is based on a window (21) having controllable transmittance and a light guide system (31) arranged for transferring light from a light guide input (33) to a light guide output (34). The light guide output is located in a same space (50) as the window (21), but at a distance therefrom (21). The illumination system includes elements for balancing (40) the transmittance of the window and a throughput of the light guide system. Preferably, the window is an outer window, the light guide input (33) is arranged for gathering day light and the light guide output (34) is arranged to illuminate an area (52) within sight from the window (21). Preferably the transmittance of the window (21) and/or the light throughput of the light guide system (31) are controlled. A method for illuminating a space (50) having a window (21) with controllable transmittance is presented.
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Citations
20 Claims
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1. Illumination system, comprising:
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a window having controllable transmittance, a light guide system arranged for transferring light from at least one light guide input to at least one light guide output; said at least one light guide output being located in a same space as said window, but at a distance from said window, wherein light passing through said light guide system does not pass through said window and light passing through said window does not pass through said light guide system, said light guide system being arranged for illuminating said same space by light passing said light guide system; and balancing arrangement having a control unit arranged for balancing said transmittance of said window and a light throughput of said light guide system, wherein said balancing changes an amount of light passing through said light guide system relative to an amount of light passing through said window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Method for illuminating a space having a window with controllable transmittance, comprising the steps of:
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transferring light from at least one light guide input to at least one light guide output being located in said space at a distance from said window for illuminating said same space by said light transferred from said at least one light guide input to said at least one light guide output, wherein light passing through said light guide output does not pass through said window and light passing through said window does not pass through said light guide output; and balancing a transmittance of said window and a light throughput between said at least one light guide input and said at least one light guide output, wherein an amount of light passing through said light guide output relative to an amount of light passing through said window is changed. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification