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    • 3. 发明授权
    • Angled illumination tube
    • 角度照明管
    • US6149289A
    • 2000-11-21
    • US313631
    • 1999-05-18
    • Osamu KuramitsuTadashi MurakamiKeiji SakamotoMakoto Yamada
    • Osamu KuramitsuTadashi MurakamiKeiji SakamotoMakoto Yamada
    • G02B6/00F21S2/00F21V8/00G02B17/00
    • G02B17/006G02B6/0096G02B6/0001
    • An angled illumination tube is capable of reducing a dark spot behind the reflector, while illuminating the tube uniformly over the length of the tube. The tube is used in combination with a light source providing a light beam and comprises an angled transparent tubular conduit having a first end and a second end on opposite longitudinal ends of the conduit. The conduit has a bend between the first and second longitudinal ends, and is used with the first end receiving the light beam from the light source in order to guide the light beam along the length of the conduit. A reflector is disposed within the bend to reflect the light beam from the first end to direct a reflected light beam towards the second end. The reflector defines an incident light axis along which the light beam is guided to the reflector, and a reflected light axis along which the reflected light beam is directed to said second end. The reflector is composed of a plurality of mirrors arranged in a parallel array along a bisector that divides an included angle between the incident and reflected light axes at an angle (.theta.) with respect to the incident light axis. Two adjacent ones of the mirrors are spaced at a fixed distance (d) along the bisector and of uniform length (L) measured within a plane including the incident and reflected light axes. The mirrors are arranged to satisfy the following relation: ##EQU1##
    • 倾斜的照明管能够减少反射器后面的暗斑,同时在管的长度上均匀地照射管。 管与提供光束的光源组合使用,并且包括成角度的透明管状导管,其具有在导管的相对纵向端部上的第一端和第二端。 导管在第一和第二纵向端之间具有弯曲,并且与第一端一起使用,其中第一端接收来自光源的光束,以沿导管的长度引导光束。 反射器设置在弯曲部内以反射来自第一端的光束以将反射的光束引向第二端。 反射器限定入射光轴,光束沿着入射光轴被引导到反射器,反射光轴沿着反射光轴被引导到所述第二端。 反射器由沿着平分线排列成并联阵列的多个反射镜组成,该平分线将入射光轴与反射光轴之间的夹角相对于入射光轴以角度(θ)分开。 两个相邻的反射镜沿着平分线以固定的距离(d)间隔开,并且在包括入射和反射的光轴的平面内测量的具有均匀的长度(L)。 这些镜子被设置成满足以下关系: