| 摘要 |
PURPOSE:To enable the practical application of the plastic optical fiber usable in a high temperature atmosphere of until about 150 deg.C by using polysulfone as a core material, and by using a transparent resin having a softening temp. of >=150 deg.C as a clad material. CONSTITUTION:The titled fiber comprises the polysulfone shown by formula I as the core material and the transparent resin having >=150 deg.C softening temp. such as the transparent resin having the high softening temp. and composed of a maleic anhydride-graft modified 4-methyl pentene-1, a UV curable type resin or a polyorganosiloxane, etc., as the clad material. namely, the polysulfone having refractive index of 1.65 and glass transition point of 180 deg.C is used as the core material, while the polymer which has lower refractive index than that of the polysulfone and the softening temp. of >=150 deg.C is used as the clad material. Thus, the optical fiber usable at the high temp. of until about 150 deg.C is obtd. |
