A light guide body includes: at least a front end tapered portion including one end connectable to an optical fiber and the other end, the one end being thinner than the other end; a plurality of second taper portions, each including one end connectable to an optical fiber and the other end, the one end of the second taper portion being thinner than the other end of the second taper portion; and a main body connected to the other ends of the first and second taper portions. The front end tapered portion, the main body, and the second taper portions provide transmission of incident light with division between the one end of the front end tapered portion and the one ends of the second taper portions.