Endoscope having optical fibers

摘要

An endoscope for imaging of an object in a body cavity by receiving image light on an image sensor (56) is provided. In an elongated tube (9) for entry in the body cavity, an objective lens system (30) is incorporated for receiving the image light from the object. A fiber optic image guide (31) includes plural bundled optical fibers (52) and a distal tip (48), is inserted in the elongated tube, for transmitting the image light focused on the distal tip by the objective lens system. A piezoelectric actuator (35) is positioned on the distal tip, for displacing the distal tip periodically. The image sensor detects the image light from the fiber optic image guide for plural times in synchronism with the displacement for forming a synthesized image. An anchoring device (18, 86, 91) anchors the elongated tube partially on a wall of the body cavity, to stabilize the elongated tube relative to the image light.