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| The reflectors which we conceive are characterized by two properties: |
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- the possibility of using several sources or a wide source,
- very high efficiencies.
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| Our studies on the reflectors led us to define a certain number of parameters essential to the design of optimized reflectors. |
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| So, we are taking in account, for example : |
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- space distribution of light of the source,
- geometry of the source and in particular of its filament or its arc,
- maximum overall dimensions of the reflectors,
- losses impossible to eliminate due to the base of source or the base of the reflectors,
- direct and indirect peripheral flux,
- and many other parameters ...
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So, we can optimize the theoretical efficiency of a reflector for its envisaged application. |
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| For example, in cases of focusing of light in optical fibres of a diameter of 12 mm starting from a source with arc of a diameter of 8mm, we obtained: |
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- a theoretical efficiency of 94 %,
- a measured technological efficiency of 82% approximately.
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Model of a specific reflector integrated in an lilluminator for optical fibre taking part in the lighting of the stations of subway " METEOR " in Paris |
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| Some lightings, like those for the paintings, require an excentric lighting which sends a heterogeneous beam so that the visitor has the impression of a homogeneity. Our 2D and 3D simulations allow us to calculate the most powerful reflectors for this style of application. |
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Simulation of a lighting of the type
" Lèche-mur"
generating, for the witness, a homogeneous perception of the enlightened wall |
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French version
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