Patent ID: 6095200
Filing Date: 2000-08-01
Classification: D03D

Abstract:
In an opto-electronic device for detecting the movement, absence or presence of a yarn in a detection zone, respectively, a yarn feeder being provided which includes a storage drum having said yarn thereon, said detection zone being defined on said storage drum wherein said yarn passes said detection zone laterally relative to a longitudinal direction of said yarn, said opto-electronic device comprising at least one light source directed from outside of said storage drum towards said detection zone, at least one reflector fitted to the storage drum at a distance from a side of the detection zone which is opposite to said light source, and at least one signal generating receiver which is disposed outside of said storage drum and is directed towards the detection zone, comprising the improvement wherein said reflector has at least one bar-code-shaped reflection area which has a narrow width in a direction of movement of said yarn or in an axial direction of said storage drum, respectively, and which has a longitudinal extension that extends in a circumferential direction of said storage drum, said longitudinal extension having a length which is a multiple of said narrow width.