| 摘要 |
PROBLEM TO BE SOLVED: To provide an endoscope system provided with an electronic endoscope whose tip part is thin in diameter and in which a CCD is insulated from the outside. SOLUTION: An objective optical system unit 20 is composed of an objective lens frame 31, a front-group lens frame 35, a moving lens frame 41, a rear-group lens frame 38 and a CCD holder 57 which are made of conductive members mounting an optical member. The frame 31, the frame 35, the frame 41, the frame 38 and the holder 57 are connected to be the same potential. An objective optical system unit 20 and a tip constituting member 21 are screwed to be the same potential electrically. A shield frame 59 whose outer periphery is covered with an insulated cover 58 is externally fit-fixed to the side of the base end part of the frame 38. An external lead extended from CCD 55 is connected to a land for the external lead of a circuit substrate 54. The periphery of an electrical system including a CCD 55 and the substrate 54 is coated with a small-thickness insulation member 70 such as a heat contraction tube to insulate the electrical system and the frames 31, 35, 41, 38, the holder 57 connected to the same potential from each other.
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