Tilt and decenter of the fiber has been modelled in a simple manner as a source with Aperture with aperture type object space NA, aperture value, activated the fast diameters. This emits and passes through the optics and reach the image plane. Now, in the lens editor, after the object field, in the second surface I have added thickness so that the distance between the fiber and the first lens is x mm. Now I wanted to decenter and tilt the fiber modelled as source to estimate the fiber launch tolerances. How to implement using coordinate breaks here?