G - Physics – 02 – B
Patent
G - Physics
02
B
49/8, 88/97.7
G02B 5/00 (2006.01) C03B 37/012 (2006.01) C03B 37/018 (2006.01) C03B 37/023 (2006.01) C03B 37/027 (2006.01) C03B 37/028 (2006.01) C03C 25/10 (2006.01) C03C 25/26 (2006.01) G02B 6/06 (2006.01)
Patent
CA 1142004
S-2-22226M/KK/79 ABSTRACT OF THE DISCLOSURE An image-transmitting bundled fibers and processes for producing the same are disclosed in which a bundle of elemental image fibers is assembled without randomizing so as to maintain the picture image without distortion utilizing an inventive assembly technique. The assembled fibers are covered with cladding layer then surrounded by a light-absorbing layer of a disclosed preferred group of materials. A process for producing an image guide of multiple fibers comprising the steps of inserting a first group of elemental image fibers comprising a material selected from the group consisting of quartz and a material com- prising primarily quartz and inserting a second group of elemental image fibers comprising a multicomponent glass into a pipe made of a material selected from the group consisting of quartz and a multicomponent glass having one end sealed, spinning the resulting assembly at an elevated temperature while reducing the pressure at the open end of the pipe, coating a layer of a coating material selected from the group of materials consisting of metals having a lower melting point than the material constituting the image fibers, thermosetting resin materials and ultraviolet- curable rosin materials onto the spun assembly to provide a pro- tective coating before said assembly contacts a solid surface and cooling the spun and coated assembly. Fiber bundles of the invention can have a length of several tens of kilometers and unlike prior bundles also exhibit good flexibility and, as well, comprise a sufficiently high number of elemental image fibers to convey a clear and satisfactory image.
335636
Higashimoto Takenobu
Ono Tetsuji
Yoshimura Kozo
George H. Riches And Associates
Sumitomo Electric Industries Ltd.
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