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    • 4. 发明授权
    • Illumination device
    • 照明装置
    • US5857761A
    • 1999-01-12
    • US826591
    • 1997-04-03
    • Tomiya AbeKouki HiranoFumitaka NakahigashiMasanori MatsumotoYoshikazu HayakawaTohru Sasaki
    • Tomiya AbeKouki HiranoFumitaka NakahigashiMasanori MatsumotoYoshikazu HayakawaTohru Sasaki
    • G02B6/00F21V8/00
    • G02B6/0061G02B6/001G02B6/0028G02B6/0038G02B6/0043
    • An illumination device comprises a light source like a halogen lamp, a light guide, a round rod-shaped transparent radiation member having a proximal end and a distal end, and a transparent radiation plate. The light guide is a plastic optical fiber comprising a single core of silicon rubber and a cladding layer of tetrafluoroethylene/hexafluoropropylene copolymer. The radiation member is a transparent circular cylinder made of acrylic resin, and has a predetermined pattern of light scattering regions on its surface oppose the directions where the light is radiated. The radiation plate is placed such a position that one side plane of the radiation plate oppose to he radiation member, and also has a predetermined pattern of light scattering regions on the back. The light scattering regions are provided along said radiation member in such a way that a ratio of an tea of one region to that of adjacent region becomes larger as the one region becomes distant from the proximal and of the radiation member.
    • 照明装置包括像卤素灯的光源,光导,具有近端和远端的圆棒形透明辐射构件和透明辐射板。 导光体是由硅橡胶单芯和四氟乙烯/六氟丙烯共聚物的包覆层构成的塑料光纤。 辐射构件是由丙烯酸树脂制成的透明圆筒,并且在其表面上相对于光辐射的方向具有预定图案的光散射区域。 放射板被放置成使辐射板的一个侧面与辐射构件相对的位置,并且在背面也具有预定的光散射区域图案。 沿着所述辐射构件提供光散射区域,使得当一个区域远离近侧和辐射构件时,一个区域的茶与相邻区域的茶的比例变得更大。