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    • 2. 发明专利
    • LIGHT TRANSMISSION BODY AND ITS PRODUCTION
    • JPH08292323A
    • 1996-11-05
    • JP9500595
    • 1995-04-20
    • HITACHI CABLE
    • ASANO HIDEKIABE TOMIYAANDO YOSHIYUKISASAKI HIDEMIYAMAGUCHI TSUYOSHIMATSUMOTO MASANORI
    • G02B6/00
    • PURPOSE: To provide a structure of a light transmission body which is a light transmission body used for illumination, is formable to arbitrary shapes and allows the reduction of light loss and a process for producing the same. CONSTITUTION: This light transmission body is produced by previously providing the inside wall surfaces 3 of an upper mold 1 and a lower mold 2 with fine ruggedness and loading a hollow resin tube 4 formed by using a synthetic resin having a low refractive index to a small thickness into these metal molds, then injecting a synthetic resin 6 having the refractive index higher than the refractive index of the this tube into the resin tube 4 under pressurization. The fine ruggedness is transferred to the resin tube 4 at the time when the resin tube 4 bulges in the process of the pressurized injection of the synthetic resin 6 and the resin tube 4 comes into pressurized contact with the inside wall surfaces 3 of the metal molds. The rugged parts function to scatter light to the boundary between the resin tube 4 and the synthetic resin 6, thereby generating exit light from the entire area on the outside surface of the light transmission body.