2013-06-17Prof.Herbert GrossFriedrich Schiller University JenaInstitute of Applied PhysicsAlbert-Einstein-Str 1507745 JenaSolution of ExercisesLecture Optical design with Zemax for PhD -Part 88.1Multi configuration,universal plot and sliderLoad a classical achromate with a focal length of f 100 mm,no field and numerical aperture NA0.1 from one of the vendor catalogs.Fix the wavelength to =546.07 nm.a)Add a thin mensicus shaped lens behind the system with an arteficial refractive index of n =2 toenlarge the numerical aperture by a factor of 2 without introducing spherical aberration.To achievethis,the surfaces must be aplanatic and concentric.b)Now reduce the numerical aperture to a diameter of 2 mm and set a folding mirror in the front focalplane of the system.The incoming beam should be come from below and is deflected to the rightside.c)Generate a multi-configuration system for a scan system by rotating the mirror.The first coordinatebreak angle can take the values-50°，-47.5°，-45°，-42.5°and-40.°The second coordinate breakshould be defined by a pick up with a resulting bending angle of the system axis of-90.d)The chief ray of the scan system is telecentric in the paraxial approximation.Due to the residualaberrations of the system,there is a deviation from the telecentricity in the real system.Show this bya correponding universal plot.e)Show the variation of the spot in the image plane by using the slider.Solution:As a first step,the achromate AAP-100.0-25.4 from the Mess Griot catalog is loaded.The field is setto zero,the aperture has a diameter of D 20 and the wavelength is set to 546 nm.a)Two surfaces are added,the distances are chosen to be 1 and 2 mm.The first surface radius istaken as a solve to be aplanatic,the second to force the marginal ray angle to be -0.2.THiscorresponds to an aplanatic-concentric lens.Finally the image distance is optimized with the Quickfocus menue.1/12Lens Data EditorEdit Solves View HelpSurf:TypeCommentRadiusThicknessGlassSemi-DiameterStandardInfinityInfinity0.00000001StandardIntinity0.000000010.0000000StandardInfinity10.000000010.0000000StandardAAP-100.0-25.462.00500006.0000000N-BK712,70000004Standard-42,37900003.0000000SF212,7000000Standard-133.2840001.000000012.70000006*Standard31.5626243A2.00000002.00,0.011.0000000Standard45,3244720M45.355288111.0000000IMAStandard5.0000E-003In the Seidel bar menus it can be verified,that this lens does not introduce any spherical aberration.b)First the two radii of the mensiscus lens are frozen to be constant.Then the first distance is set to 0and the cardinal points are calculated.3.201114-49.991071Nodal Planes-49.991871It is seen,that the front focal plane lies 46.8 mm in front of the system.The bending mirror isintroduced in a corresponding distance.