PLASTIC OPTICAL FIBER TUBE IRRADIATION DEVICE

PURPOSE:To make the whole optical fiber with a long length light-emit and irradiate uniformly and in high brightness without complicating structure of the optical fiber and also without requiring a special or a high degree of optical leakage treatment for a plastic optical fiber product. CONSTITUTION:The device consists of a plastic optical fiber bundle consisting of a polymethacrylate resin as a core material and a vinylidene fluoride- tetrafluoroethylene copolymer as a clad material, a light source device 2 connected with both ends of the optical fiber bundle and a transparent tube covering the optical fiber bundle, and a fiber tube 1 consisting of the optical fiber bundle and the transparent tube is formed in a looped shape and the both trued up ends are connected with the light source device 2 and the optical fiber bundle is divided the whole fiber numbers of it into plural groups and these are twisted at the ratio of 1-20 twisted numbers/m.