A device for monitoring a quality of moving linear textile material at an operating unit of a textile machine

摘要

A device for monitoring the quality of moving linear textile material (3), particularly yarn, at an operating unit of a textile machine, comprising a radiation source (1) and a linear digital optical sensor (2), between which a space (30) has been created for linear textile material (3) passage, whereby between the radiation source (1) and the space (30) for passage of linear textile material (3) is arranged an optical member (6). The optical member (6) is formed by an aspheric bi-cylindrical lens, comprising a spheric cylindrical surface (61) having the axis of the cylinder parallel with the direction of the movement of the monitored textile material (3) and the aspheric cylindrical surface (62) having the axis of the cylinder perpendicular to the direction of the movement of the monitored textile material (3).