PRODUCTION METHOD AND APPARATUS FOR PLASTIC OPTICAL FIBER BASE MATERIAL

Title:

PRODUCTION METHOD AND APPARATUS FOR PLASTIC OPTICAL FIBER BASE MATERIAL

Document Type and Number:

WIPO Patent Application WO/1995/000868

Kind Code:

A1

Abstract:

Plastic layers, containing a polymer A (refractive index: Na) and a refractive index adjusting agent having a refractive index different from that of the polymer A, are applied on the surface of a rod rotating on its axis by using CVD (Chemical Vapor Deposition) or a coating method so as to obtain a base material wherein the refractive index gradually decreases with the distance from the center toward the periphery. The proportions of the polymer A and the refractive index adjusting agent in the plastic layers can be varied so that the refractive index may gradually decrease.

Inventors:

NONAKA TSUYOSHI (JP)
HOSOYA TOSHIFUMI (JP)
KOBAYASHI YUJI (JP)
MATSUDA YASUO (JP)

Application Number:

PCT/JP1994/000962

Publication Date:

January 05, 1995

Filing Date:

June 14, 1994

Export Citation:

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Assignee:

SUMITOMO ELECTRIC INDUSTRIES (JP)
NONAKA TSUYOSHI (JP)
HOSOYA TOSHIFUMI (JP)
KOBAYASHI YUJI (JP)
MATSUDA YASUO (JP)

International Classes:

B29C48/10; B29D11/00; G02B1/04; G02B6/028; B29C48/00; B29C48/08; (IPC1-7): G02B6/00; G02B6/18

Foreign References:

JPS545743A	1979-01-17
JPH0364705A	1991-03-20
JPS616604A	1986-01-13
JPS599603A	1984-01-19

Other References: