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USING MICRO OPTICAL ELEMENTS FOR DEPTH PERCEPTION IN LUMINESCENT FIGURATIVE STRUCTURES ILLUMINATED BY POINT SOURCES

  • US 20150043220A1
  • Filed: 02/12/2013
  • Published: 02/12/2015
  • Est. Priority Date: 02/16/2012
  • Status: Abandoned Application
First Claim
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1. A lighting unit comprising:

  • a light source; and

    a transmissive optical plate,wherein the light source comprises a light exit surface for light source light,wherein the transmissive optical plate comprises an upstream face directed to the light exit surface of the light source and a downstream face arranged away from the light exit surface of the light source,wherein the transmissive optical plate comprises at least a 2D array of tapered micro optical elements for refraction of the light source light in a direction away of the downstream face,wherein the geometrical path length (d) for light source light from the light exit surface to the transmissive optical plate is at least 20 cm,wherein the light exit surface of the light source comprises a plurality of point-like light exit surfaces arranged in a 2D pattern is designed to issue light source light as a 2D patterned shaped light beam towards the upstream face.

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