DEVICE FOR COUPLING A LIGHT SOURCE AND AN OPTICAL WAVEGUIDE

摘要

A device for coupling a light source and an optical waveguide, which light source has an emission surface whose dimensions are of the same order of magnitude as or smaller than the cross-sectional dimension of the waveguide, comprises a ball lens, which is contact with the light source, and a convergent optical transfer system, which images the input face of the waveguide in the optical centre of said ball lens with a magnification of approximately -1, the radiation issuing from any point of the emission surface of the light source entering the waveguide as parallel rays.