Light source and method for optimising illumination characteristics thereof
First Claim
1. A light source, comprising:
- four or more light-emitting elements, each one of which having a respective emission spectrum;
a selection module for selecting one or more illumination characteristics for which the light source is to be optimised;
a computing module for computing, from values indicative of each said respective emission spectrum, optimised drive parameters for driving the light source to substantially attain said selected one or more illumination characteristics;
said selection module being configured to associate a respective optimisation weight to two or more of said illumination characteristics, wherein each said respective optimisation weight is used by said computing module when computing said optimised drive parameters; and
a driving module for driving each of said four or more light-emitting elements in accordance with said optimised drive parameters.
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Accused Products
Abstract
The present invention provides a light source, method, computer-readable storage medium and computer program product for optimising one or more illumination characteristic thereof. In particular, the present invention provides a light source comprising four or more light-emitting elements, or groups or arrays thereof, each one of which having a respective predefined emission spectrum which, when combined in accordance with a given intensity ratio, provide illumination at a particular color temperature. This light source may comprise an internal and/or external selection module for selecting one or more illumination characteristics to be optimised, and internal and/or external computing module for optimising drive parameters of the light source to provide the optimised illumination characteristic selected. The light source may optionally be hardwired to operate according to predefined drive parameters selected, using a method, computer-readable storage medium and/or computer program product of the present invention, in order to optimise a pre-selected illumination characteristic.
44 Citations
24 Claims
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1. A light source, comprising:
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four or more light-emitting elements, each one of which having a respective emission spectrum; a selection module for selecting one or more illumination characteristics for which the light source is to be optimised; a computing module for computing, from values indicative of each said respective emission spectrum, optimised drive parameters for driving the light source to substantially attain said selected one or more illumination characteristics;
said selection module being configured to associate a respective optimisation weight to two or more of said illumination characteristics, wherein each said respective optimisation weight is used by said computing module when computing said optimised drive parameters; anda driving module for driving each of said four or more light-emitting elements in accordance with said optimised drive parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for driving a light source in accordance with drive parameters that optimise one or more illumination characteristics of the light source, the light source comprising four or more light-emitting elements each having a respective emission spectrum, the method comprising:
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identifying for each of the four or more light emitting elements, one or more values indicative of its respective emission spectrum; selecting the one or more illumination characteristics for which the light source is to be optimised; associating a respective optimisation weight to each of said one or more selected illumination characteristics; calculating, using each said one or more values, the drive parameters in accordance with each said respective optimisation weight that optimise for said selected one or more illumination characteristics; and driving the light source in accordance with said calculated drive parameters. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification