| http://www.w3.org/ns/prov#value | - Besides, with a large angle of visibility ?? of the illuminating system, the output characteristic angle of the collimator 5 is so large that the collimator 5 may be omitted. [0143] The light guide member 30 is made from a material such as quartz, glass, transparent resin like acrylic resin or polycarbonate, or the like.
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