Endoscope

Details Endoscope Endoscope

1988-02-05

1989-10-10

Sikes, William L.

Surgery

Truss

Pad

128 7, G02B 606

Patent

active

048727407

ABSTRACT:
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 .mu. are arranged in the sea so that the same positional relationship 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%.

REFERENCES:
patent: 3674452 (1972-07-01), Strack
patent: 4523806 (1985-06-01), Kojiha et al.
patent: 4618884 (1986-10-01), Nagasaki
patent: 4676592 (1987-06-01), Nishioka et al.
patent: 4721359 (1988-01-01), Nishioka et al.
patent: 4736734 (1988-04-01), Matsuura et al.
patent: 4772093 (1988-09-01), Abele et al.
Laser+Elektro-Optik, vol. 9, No. 4, Nov. 1977, pp. 23-27; M. D. Reidenbach, "Eigenschaften von Kunststofflichtleitern".

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