Patent ID: 9187367
Filing Date: 2015-11-17
Classification: B05D,C03C

Abstract:
1. A method for curing a coating on a glass fiber, comprising: providing a substantially closed, substantially cylindrical cavity having a substantially elliptical cross-section and a reflective inner surface, the cavity defining (i) a first line focus, (ii) a second line focus defining a curing axis, and (iii) a major axis intersecting the first and second line foci; providing a protective tube that is substantially transparent to ultraviolet (UV) radiation, the protective tube surrounding the curing axis; passing a glass fiber having an incompletely cured coating through the cylindrical cavity, through the protective tube, and along the second line focus; and directing UV radiation in a substantially Lambertian emission pattern from the first line focus at an emission angle α between the line of average UV-radiation emission L wherein the emission angle α is defined by the following equation: where r 2f is the distance between the first line focus and the second line focus, and θ