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US 2012/0069546 A1Published application
Light scattering and conversion plate for leds
AssigneeKoninklijke Philips Electronics N.V.
InventorsHans-Helmut Bechtel, Matthias Heidemann, Peter J. Schmidt
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Abstract
The invention relates to an illumination system having a light scattering and conversion plate comprising a non-converting but scattering layer and a thinner converting layer. By separating scattering and conversion, the characteristics of the illumination system can greatly be increased.
Claims11
An illumination Illuminati system, comprising at least one light scattering and conversion plate comprising
- a first layer having scattering properties and essentially no conversion properties and
- a second layer having conversion properties wherein the thickness A of the first layer is greater or equal to three times the thickness B of the second layer.
Dependencies are inferred from the claim text.