Optical guides with compressible cellular material

Details Optical guides with compressible cellular material Optical guides with compressible cellular material

1974-06-25

1977-07-26

Henry, Jon W.

G02B 514

Patent

active

040379230

ABSTRACT:
An optical guide comprises at least one optical fibre and, extending lengthwise of the guide and in contact with the optical fibre or fibres, a body of compressible cellular material, for instance in the form of at least one separately formed elongate member. The arrangement is such that when the guide is stressed in such a way as to subject the optical fibre or fibres to a tensile force, the optical fibre or each of said fibres can move transversely of the guide to compress the compressible cellular material with which it is in contact and thereby reduce the strain that would otherwise be imparted to the fibre or fibres. Preferably the optical fibres are assembled about and in contact a longitudinally central core member of which at least an outer peripheral layer is of compressible cellular material. The optical fibres may be arranged in at least two optical bundles with which are in contact with at least one longitudinally extending body of compressible cellular material, an outer protective sheath surrounding the bundles and body or bodies of compressible cellular material.

REFERENCES:
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patent: 2224274 (1940-12-01), Powers
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patent: 2710275 (1955-06-01), Waggoner
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patent: 3830953 (1974-08-01), Wood et al.
Archer, Optical Spectra, pp. 31-34, Sept., 1973.
Spie Journal, "Mechanical Characteristics of Flexible Glass Fiber Optics," by Ali et al, July, 1971, pp. 155-158.

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