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Capsule endoscope

  • US 6,855,111 B2
  • Filed: 03/07/2003
  • Issued: 02/15/2005
  • Est. Priority Date: 03/08/2002
  • Status: Active Grant
First Claim
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1. A capsule endoscope comprising:

  • lighting means that includes at least two light sources;

    a light diffuser arranged in front of each of the at least two respective light sources;

    an image pickup means that includes an objective optical system; and

    a transparent cover that may be attached to a capsule body so as to enclosed the lighting means, the light diffusers and the image pickup means;

    wherein said at least two light sources are arranged at the periphery of the objective optical system, and rays having a normalized intensity ratio of 0.1 from the at least two light sources intersect prior to reaching the near point of the depth of field of the objective optical system, said intersection point being within the interior region of said capsule body with transparent cover attached.

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