Endoscope having a solid-state image sensor and shield therefor
First Claim
Patent Images
1. an endoscope comprising:
- an operation section;
an insertion section extending from the operation section and having a proximal end, a distal end, and a central axis;
an observation unit located at the distal end of the insertion section, the observation unit including;
an objective lens system for focusing an optical image;
a solid-state image sensor for converting the optical image focused by the objective lens system to an electric signal, the solid-state image sensor having a light-receiving surface located substantially perpendicular to the central axis of the insertion section, for receiving the optical image from the objective lens system;
a circuit board electrically connected to the image sensor, the circuit board being located between the image sensor and the proximal end of the insertion section and extending substantially parallel to the central axis of the insertion section;
a plurality of electronic components mounted on the circuit board and electrically connected to the image sensor;
an electric cord connected to the circuit board to pick up the electric signal and support means covering the objective lens system, solid-state image sensor, and circuit board, and having a shield member for shielding the solid-state image sensor and electronic components against high frequency waves.
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Abstract
An endoscope includes an insertion section inserted into the patient'"'"'s body. A distal end member is provided at the distal end of the insertion section. An illuminating system for illuminating a desired portion is attached to the end member. An observation unit is detachably attached to the distal end member. This unit includes a cylindrical support ditachably fitted to the end member. In the support are disposed an objective lens system for imaging an optical image of the portion illuminated by the illuminating system, a solid-state image sensor for converting the image to an electric signal, and electronic components connected to the sensor.
77 Citations
9 Claims
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1. an endoscope comprising:
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an operation section; an insertion section extending from the operation section and having a proximal end, a distal end, and a central axis; an observation unit located at the distal end of the insertion section, the observation unit including; an objective lens system for focusing an optical image; a solid-state image sensor for converting the optical image focused by the objective lens system to an electric signal, the solid-state image sensor having a light-receiving surface located substantially perpendicular to the central axis of the insertion section, for receiving the optical image from the objective lens system; a circuit board electrically connected to the image sensor, the circuit board being located between the image sensor and the proximal end of the insertion section and extending substantially parallel to the central axis of the insertion section; a plurality of electronic components mounted on the circuit board and electrically connected to the image sensor; an electric cord connected to the circuit board to pick up the electric signal and support means covering the objective lens system, solid-state image sensor, and circuit board, and having a shield member for shielding the solid-state image sensor and electronic components against high frequency waves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification