Patent ID: 6190483
Filing Date: 2001-02-20
Classification: B29C,B29L,G02B

Abstract:
A method of manufacturing an optical conductor or a ribbon of optical conductors, said method comprising the step of exposing a mixture of a resin and of a photo-initiator to ultraviolet (UV) radiation in order to form, by cross linking, a covering of the optical conductor or a material for assembling together a plurality of conductors, cross-linking taking place by causing the conductor or bundle of conductors to advance past an ultraviolet source at a speed of at least 10 meters per minute (m/min);wherein said method comprises exposing said mixture to UV radiation from a first source emitting substantially monochromatic UV radiation to achieve cross-linking mainly on the surface, and then exposing said mixture to UV radiation from a second UV source emitting UV radiation of broad spectrum containing wavelengths that are longer than the wavelength of the monochromatic source to achieve cross-linking mainly in depth.