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Illumination device and image projection apparatus including the same

  • US 6,318,863 B1
  • Filed: 09/10/1999
  • Issued: 11/20/2001
  • Est. Priority Date: 01/21/1999
  • Status: Expired due to Term
First Claim
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1. An illumination device, comprising:

  • at least a light source;

    at least an array of taper light pipes, disposed in front of the light source; and

    a uniform illuminating means comprising a guiding taper light pipe, disposed in front of the array taper light pipes and covering a range of the array of taper light pipes from which a light is coming out.

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