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Systems and methods for illuminating a platen in a print scanner

  • US 20030133103A1
  • Filed: 01/17/2002
  • Published: 07/17/2003
  • Est. Priority Date: 01/17/2002
  • Status: Active Grant
First Claim
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1. A hybrid illumination system that provides illumination for a platen in a print scanner, comprising:

  • an illumination source array that emits light from a plurality of discrete light sources;

    at least one diffuser; and

    a collimating lens, each diffuser being disposed between said illumination source array and said collimating lens such that at least a portion of the light emitted from said plurality of discrete light sources passes through each diffuser to said collimating lens as diffuse light, and wherein at least a first portion of light that exits said collimating lens falls on the platen as collimated light, and at least a second portion of light that exits said collimating lens falls on the platen as diffuse light.

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