Optical Waveguide Plate Comprising Phosphorus-Containing Structure Elements
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United States of America Patent
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Issued Date -
Jan 24, 2013
app pub date -
Jan 17, 2011
filing date -
Jan 20, 2010
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Abandoned
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Abstract
The invention relates to an optical waveguide plate having a first flat side (2), a second flat side (4), which is parallel to the first flat side, and an end face (6). The end face (6) is provided for coupling in light, and the second flat side (4) is provided for coupling out the light coupled in via the end face (6). The first flat side (2) has structure elements (8) that serve for coupling out the light and comprise phosphorus. In this way, the phosphorus can be arranged at such a spatial distance from a corresponding light source (10), serving for coupling in the light via the end face (6), that heating of the phosphorus that possibly has an adverse effect, caused by the operation of the light source (10), can be avoided. Moreover, this makes it possible to provide, at different locations of the first flat side (2), structure elements (8) which differ in their phosphorus composition, such that, in this way, light having different spectral compositions, that is to say different white hues, for example, is coupled out at the different locations of the optical waveguide plate.
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