JP-2022538147-A5 -

Dates

Publication Date

20230511

Application Date

20200430

Description

Here, the glass fibers 2, wound on a winding reel with a minimum diameter of 30 cm, are continuously unwound from the winding reel by a fiber guidance system (not shown in the figure) and supplied to the molten region 6a through a guide sleeve 24. In the molten region 6a, a focus-blurred laser beam 3 acts as a heat source. The peak of the heat distribution is compensated for by the focus blur, shown in the figure as a dashed line around the laser beam 3. Ideally, the laser beam 3 is about twice the diameter of the glass fiber 2 being melted at the point of impact, so that both the glass fiber 2 and its surrounding area, particularly the substrate 7, are heated.