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Surface light guide and planar emitter

  • US 8,998,479 B2
  • Filed: 03/23/2011
  • Issued: 04/07/2015
  • Est. Priority Date: 04/23/2010
  • Status: Active Grant
First Claim
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1. A surface light guide, comprising:

  • a radiation exit area running along a main extension plane of the surface light guide and being provided for laterally coupling in radiation;

    scattering locations for scattering the coupled-in radiation;

    a first interface and a second interface, which delimit light guidance of the coupled-in radiation in a vertical direction;

    a first layer and a second layer formed one on top of the other in the vertical direction between the first interface and the second interface; and

    a separating film arranged between the first layer and the second layer;

    wherein the surface light guide is provided for coupling in radiation having a first radiation component and a second radiation component; and

    wherein the first layer and the second layer are decoupled from one another with regard to the light guidance.

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