Hello,

I need to design a relay lens system that is added to a fiber bundle system with the following requirements: a 650 mm to 700 mm track length for the relay lens system, and maintaining the dimension and shape of the image formed at the end of the fiber bundle by preserving the optical power of the system. The fiber bundle has a diameter of 280 mm and most of the optical elements in the system have diameters ranging from 140 mm to 160 mm. I was thinking of using a symmetric achromatic doublet system to achieve this, but the image does not carry through. If anyone has any feedback on how to approach this issue, I would appreciate it.