Sewing machine and method for detecting movement in sewing machines

摘要

The sewing machine has a device for detecting movements having a light source (1) that emits coherent light, an interference detector allocated to the light source. The interference detector is constructed to detect a measurement parameter that characterizes an interference between reflected light from the light source that is scattered by an object (13) to be detected and the light emitted from the light source. An independent claim is included for a and method for detecting movement in sewing machines.