LUMINOUS-FLUX FOCUSSING DEVICE AND OPTICAL FIBER WELDER USING SAID DEVICE

摘要

The device comprises a first optical means focusing the beam whilst forming therefrom an elongated focal spot and a second optical means facing the first and giving an image spot of the focal spot which is substantially parallel and facing said focal spot. The machine comprises a light source able to heat the ends of the fibres, means for the positioning and holding of said ends against one another, as well as the device, said ends being placed between the spots.