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%%
%% Ein Beispiel der DANTE-Edition
%%
%% 7. Auflage
%%
%% Beispiel 32-03-40 auf Seite 745.
%%
%% Copyright (C) 2016 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%
%%
%% ====
% Show page(s) 1
%%
%%
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pstricks,pst-node,pst-grad}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}(0,-3)(12,3)
\pnode(0,0){S} \pnode(4,1){L'1} \pnode(4,-1){L'2} \pnode(6,1){E'1} \pnode(6,-1){E'2}
\pnode(6,0.5){E1}\pnode(6,-0.5){E2}\pnode(8.5,1.5){L1}\pnode(8.5,0.5){L2}\pnode(11.5,1.25){P}
\pspolygon[linestyle=none,fillstyle=vlines,hatchcolor=yellow](S)(L'1)(E'1)(E1)(L1)(P)(L2)(E2)(E'2)(L'2)
% lentille L'
\pscustom[fillstyle=gradient,linecolor=blue,gradend=white]{%
\code{0.5 0.83333 scale}
\psarc(4,0){4.176}{-16.699}{16.699}
\psarc(12,0){4.176}{163.30}{196.699}}
% lentille L
\pscustom[fillstyle=gradient,linecolor=blue,gradend=white]{%
\code{1 1.5 scale}
\psarc(4.5,0){4.176}{-16.699}{16.699}
\psarc(12.5,0){4.176}{163.30}{196.699}}
\uput[90](4,1){$L'$}\uput[90](8.5,2){$L$}
\psdot(S)\uput[180](S){S}
\psline(S)(12,0)\psline[linewidth=2\pslinewidth](6,2)(6,0.5)\psline[linewidth=2\pslinewidth](6,-2)(6,-0.5)
\psline[linestyle=dashed](6,0.5)(6,-0.5)\psline(11.5,-3)(11.5,3)\psline(S)(L'1)(E'1)\psline(S)(L'2)(E'2)
\uput[0](P){P}
\psline(E1)(L1)(P)\psline(E2)(L2)(P)\psline[linestyle=dashed](8.5,0)(P)
%\rput(8.5,0){\psarc{->}(0,0){1.5}{0}{!1.25 3 atan}\uput[0](1.5;15){$\theta$}}
\uput[-90](10,0){$f$}\uput[0](6,2){E}\uput[135](6,0){T}\uput[45](11.5,0){O}
\end{pspicture}
\end{document}
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