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Exposing apparatus and image forming apparatus using organic electroluminescence element

  • US 20040161192A1
  • Filed: 12/17/2003
  • Published: 08/19/2004
  • Est. Priority Date: 12/18/2002
  • Status: Abandoned Application
First Claim
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1. A light source comprising:

  • a light emitting unit including a light emitting layer for electrically emitting a light; and

    a waveguide for emitting a light irradiated from the light emitting unit into air through a light take-out surface formed on an end face, wherein an area of the light take-out surface of the waveguide is set to be smaller than that of the light emitting layer.

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