| http://www.w3.org/ns/prov#value | - In such a structure as well, there is a function which attenuates a phenomenon that the ray retrogresses to the incident side in the tapered rod 45 which is inversely disposed due to the ray from the LED light-emitting chip 14 a being once transformed into the ray whose NA is small by the ray inclination converting section 51B, and there is an effect in which plenty of components of the ray incide
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