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Light diffusing body and a transmission type screen

  • US 7,320,823 B2
  • Filed: 02/12/2007
  • Issued: 01/22/2008
  • Est. Priority Date: 02/14/2006
  • Status: Active Grant
First Claim
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1. A light diffusing body comprising a transparent resin and spherical micro-particles having a refractive index which is different from that of the transparent resin,wherein when the value obtained by dividing the sum of scattering cross-sections of all spherical micro-particles contained in the unit area of the light diffusing body by the sum of geometrical cross-sections of all these spherical micro-particles for each of multiple wavelengths, the minimum value of all of values obtained for each wavelength is 90% or higher of the maximum value.

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