Materials and process for spatial S/P ratio distribution
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United States of America Patent
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Jun 12, 2018
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app pub date -
Dec 30, 2014
filing date -
Dec 30, 2013
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Abstract
A light fixture is disclosed having a plurality of light sources belonging to at least two types emitting light of different S/P ratio. The light sources are placed in the light fixture so that the light fixture, when in use, emits a light bundle having varying S/P ratios within the bundle. In an embodiment the light bundle has a central area with low S/P ratio, and peripheral areas having higher S/P ratio. The S/P ratio in the peripheral areas can be as high as 5 or even higher. In an alternate embodiment the light bundle has a central area with relatively S/P ratio, and peripheral areas having lower S/P ratio. The S/P ratio in the peripheral areas can be as low as 2 or even lower.
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