Wall wash lighting system

  • US 9,291,334 B2
  • Filed: 05/27/2014
  • Issued: 03/22/2016
  • Est. Priority Date: 05/27/2014
  • Status: Active Grant
First Claim
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1. An illumination system for illuminating a surface, comprising:

  • an optical source for generating light;

    an asymmetric optic device for generating output light by total internal reflection (TIR) of the light from the optical source, the asymmetric optic device having an axis, intensity of the output light being asymmetric with respect to the axis of the asymmetric optic device;

    a diffuser receiving and diffusing the output light from the asymmetric optic device to generate diffused light; and

    a cover lens receiving the diffused light from the diffuser and generating an output light pattern from the diffused light from the diffuser that is transmitted through the cover lens, the cover lens having an etched portion and a non-etched portion, the etched portion of the cover lens asymmetrically scattering only a portion of the diffused light that is transmitted through the cover lens to generate the output light pattern such that the output light pattern has an intensity profile that is asymmetric with respect to the axis of the asymmetric optic device;

    whereinthe surface being illuminated is substantially parallel to the axis of the asymmetric optic device.

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