| 摘要 |
<p>In the present invention, a plurality of second optical fibers (120) are disposed at the periphery of a first optical fiber (110). Of the second optical fibers (120), one end (124) faces the same direction as one end (114) of the first optical fiber (110). A reflecting surface (162) faces the one end (114) and the one ends (124), and is a paraboloid. Also, the one end (114) is positioned on the line of extension of the paraboloid axis of the reflecting surface (162), or in other words on the line of extension of the axis of the parabola that is the basis of the paraboloid.</p> |
