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C-cover is a plastic distal end cap for the distal head. The larger of the circular glass lenses on the distal tip is the objective lens. This lens focuses a miniature image of the GI mucosa on the surface of a solid-state CCD image sensor. The image sensor sends a continuous stream of images back to the video processor via a collection of very fine electrical wires. The objective lens and CCD unit are tightly sealed to prevent condensation from fogging the image and to protect the imaging system from damage if fluid were to enter the instrument accidentally. Light to illuminate the interior of the body travels through the instrument via fiberoptic illumination fibers. This light is evenly dispersed across the endoscope’s field of view via a light guide lens system.
