Homework 9-1 a)For a fluorescence microscope, where is the best location to place the emission filter? b)What causes the "kidney bean effect" in eyepiece?

c)How to reduce the field curvature when you design a microscope objective? d)What type of optical system would you select when you design an optical system with a long back working distance? e)What is the function of microlens array in the digital sensor?