Multifilament type plastic optical fiber endoscope

Details Multifilament type plastic optical fiber endoscope Multifilament type plastic optical fiber endoscope

1991-02-22

1992-06-30

Lee, John D.

Optical waveguides

Optical fiber bundle

Imaging

385116, G02B 2326

Patent

active

051270790

ABSTRACT:
An endoscope comprising as an image-transmitting member a multifilament type plastic optical fiber in which 50 to 20,000 islands having a core-sheath structure, a core diameter of 2 to 70 .mu.m and a circular or substantially circular section are arranged in a zigzag-stacked or square-stacked structure in the sea having a circular or substantially circular section, so that the lamination structure of the entire cores has a substantially circular shape in the section of the image-transmitting portion, wherein the same positional relationship of the ends of light-transmitting paths arranged in the section of the optical fiber is maintained on both the ends of the optical fiber, the periphery of the section of the image-transmitting portion of the optical fiber has a circular or substantially circular shape, and an object lens is attached to one end of the image-transmitting member and an image-transmitting light-receiving member is arranged on the other end of the image-transmitting member.

REFERENCES:
patent: 4690500 (1987-09-01), Hayami et al.
patent: 4768857 (1988-09-01), Sakunaga et al.
patent: 4772093 (1988-09-01), Abele et al.
patent: 4812012 (1989-03-01), Terada et al.
patent: 4842365 (1989-06-01), Terada et al.
patent: 4872740 (1989-10-01), Terada et al.
patent: 4964692 (1990-10-01), Prescott

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