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Light distribution controlling apparatus, luminous flux density controlling apparatus and partitioning method

  • US 6,542,303 B1
  • Filed: 12/29/2000
  • Issued: 04/01/2003
  • Est. Priority Date: 06/29/1998
  • Status: Expired due to Fees
First Claim
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1. A light distribution controlling apparatus comprising:

  • a source of light;

    a building, said building having an area, said area having a part which is shaded by an obstacle from said source of light;

    a transparent body suspended above said building having a first surface and a second surface;

    said light being incident on said first surface;

    said light being output from said second surface onto said part;

    said transparent body performing an operation selected from the group consisting of;

    diffusion, refraction, division, and a combination of diffusion and refraction.

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