2012-08-14Exercises Zemax 3 AberrationsProperties of systems3.1Exercise 2-1:Strehl ratio and geometrical vs Psf spot size..................3.2Exercise 3-2:Performance of an achromate...........3Properties of systems3.1Exercise 3-1:Strehl ratio and geometrical vs Psf spot sizeA single lens made of K5 with focal length f=25 mm and thickness d=5 mm is illuminated by a divergingbeam with numerical aperture NA 0.1.After the lens the light should be collimated.If the collimated beamis refocussed without further aberrations,the point spread function is not diffraction limited.a)Calculate the accurate Strehl ratio,the estimated Strehl ratio and the geometrical and diffractionencircled energy inside the ideal Airy diameter.b)If no the numerical aperture is reduced,the Marechal estimation becomes better.Calculate the largestNA,for which the relative error is smaller then 2%.What amount for geometrical and diffraction encircledenergy is inside the Airy diameter is obtained here3.2Exercise 3-2:Performance of an achromateLoad a classical achromate out of a vendor catalog with focal length f=100 mm.a)What is the numerical aperture of the system in the image side Is the system diffraction limitedb)Calculate the Seidel surface contributions of the system in the desired orientation and for the reversedlens.c)Determine the range of finite field angles,for which the original achromate is diffraction limited,if 546 nmand a reduced aperture diameter of 15 mm is considered.