1. The problem statement, all variables and given/known data i need to couple a ray (point source 15 deg) into a fiber with a small core diameter, the fiber located 8cm from the source. the focal distance of the lens is 1.5cm i need to choose 2 possible locations 2. Relevant equations 3. The attempt at a solution first suggestion: i placed the lense in the focal distance from the fiber second suggestion: i placed the lense in the middle between the source and the fiber (in this location the transverse magnification equal to -1 meaning that the point source will not get bigger, am i correct?