| 摘要 |
PROBLEM TO BE SOLVED: To provide a light guide which is superior in uniformity, has small transmission loss and is superior in emitting efficiency and to prevent deterioration in a sealing member, that is provided inside the light guide, caused by ultraviolet rays by preventing the ultraviolet rays being leaked out from the side surface of the light guide. SOLUTION: A non-flexible light guide (3), in which optical fibers, that constitute of a bundle of primary coated optical fibers, are welded and integrated to make a homogeneous and air tight structure, is mounted on the emitting tip of a light guide main body (2) made of a primary coated optical fiber group. COPYRIGHT: (C)2006,JPO&NCIPI
|
