Endoscope

Details Endoscope Endoscope

A - Human Necessities

61

B

128/2, 240/82

A61B 1/00 (2006.01) G02B 6/06 (2006.01) G02B 23/26 (2006.01)

Patent

CA 1292461

ENDOSCOPE ABSTRACT OF THE DISCLOSURE An endoscope comprising as an image-transmitting member a multifilament type plastic optical fiber, an object lens arranged on one end of the optical fiber and a device for guiding an image of an object transmitted to the other end of the optical fiber to an image- receiving portion, wherein the multifilament type plastic optical fiber has an islands-in-sea structure in which 50 to 10,000 light-transmitting core-sheath structure islands having a diameter of 5 to 200 µ are arranged in the sea so that the same positional rela- tionship of the islands is maintained on both ends of the optical fiber, and the core occupancy ratio in the total cross-section of the optical fiber is at least 50%.

557829

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