| Date 08/09/2010 |
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| Script S2_2_3.m | |||
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%==============================================
%Simple thick biconvex lens %============================================== % %============================================== %============================================== %CORRIGENDA %In table 2.3 pag. 73 the value for %magnfication -2.7 must be replaced by -2.1 %as can be verified running this script %when zs = -50 is used %============================================== %============================================== % %the refractine index of the lens n=1.65; nmeno1=n-1; %its thickness in mm t=3; %radii of the spherical surfaces of the lens, in mm R1=35; R2=-60; %z is distance of the point object from the left vertex of the lens %equal to -30 or to -50 % zs=-30; zs=-50; % %the lens power and focal length power=nmeno1*(1/R1-1/R2+(nmeno1*t)/(n*R1*R2)); f=1/power %distance of the principal points from the vertexes h=(-nmeno1*f*t)/(n*R2) hp=(-nmeno1*f*t)/(n*R1) %distance of the point image from the second principal point z=zs-h zp=(z*f)/(z+f) %using Newtonian formula w=z+f wp=-(f^2)/w %magnification using Gaussian formula MTG=zp/z %and Newtonian formula MTNwp=-wp/f MTw=f/w %============================================== % |
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