Patent ID: 8023789

Claim:
A plastic optical fiber cable comprising: a bare plastic optical fiber comprising a core and a cladding layer formed around said core, the cladding layer being formed of one layer or two or more layers; and a coating layer provided on the outer surface of the bare plastic optical fiber, wherein said core is made of a poly(methyl methacrylate) or a copolymer comprising methyl methacrylate unit as a major component; said cladding layer comprises, a layer made of a fluorine-containing olefin-based resin comprising a tetrafluoroethylene unit in at least an outermost layer of the cladding layer the fluorine-containing olefin-based resin having a heat of crystal fusion of 40 mJ/mg or smaller as measured using differential scanning calorimetry (DSC); said coating layer comprising a protective coating layer, a light blocking coating layer, and a functional coating layer, the layers being provided in the order mentioned from the inner side; said functional coating layer is made of a first nylon-based resin composition having a crystalline melting point in a range of 215° C. to 280° C. as measured using differential scanning calorimetry (DSC), said first nylon-based resin composition containing melamine cyanurate in an amount in a range of 3% to 40% by mass or a brominated flame retardant in such an amount that the content of bromine atoms falls within a range of 1.5% to 30% by mass, said first nylon-based resin composition further containing an inorganic chromatic pigment in an amount in a range of 0.1% to 10% by mass; said light blocking coating layer is made of a second nylon-based resin composition containing, as a major component, a nylon-based resin of at least one of nylon 11 and nylon 12, said second nylon-based resin composition containing monomer and oligomer compounds derived from the nylon-based resin in an amount of 1.5% by mass or less in total; and said protective coating layer is made of at least one resin material selected from the group consisting of polybutylene terephthalate-based resins, methyl (meth)acrylate-based resins, styrene-based resins, and homopolymers of vinylidene fluoride.