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Objective optical system for endoscopes

  • US 5,916,148 A
  • Filed: 06/27/1996
  • Issued: 06/29/1999
  • Est. Priority Date: 06/29/1995
  • Status: Expired due to Term
First Claim
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1. An endoscope tip assembly, comprising:

  • a light guide bundle;

    an objective optical system arranged parallel to said light guide bundle, wherein said objective optical system comprises an image side unit and an object side unit, said object side unit being disposed on an object side of said image side unit;

    an image pick up element constructed and arranged to be in communication with said objective optical system; and

    an adapter lens system which is detachably disposed on the object side of said object side unit,wherein said image side unit and said image pickup element are secured with respect to each other in a common frame,wherein each constituent lens of said image side unit has a larger diameter than each constituent lens of said object side unit,wherein each optical element of said adapter lens system has a diameter which is smaller than a diameter of any lens in said image side unit, andwherein said adapter lens system comprises an aperture stop.

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