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%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  2. Auflage
%% 
%%  Beispiel 15-03-39 auf Seite 762.
%% 
%%  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{121.16928pt}
\setlength\parindent{0pt}
\usepackage[utf8]{inputenc}
%StartShownPreambleCommands
\usepackage{pst-optic}
%StopShownPreambleCommands
\begin{document}
\psset{unit=0.5}\begin{pspicture}(-1.5,-5.5)(10,5.5)
  \rput(0,0){\beamLight[drawing=false,mirrorDepth=4.75,mirrorWidth=0.1,mirrorHeight=10,linecolor=lightgray]}
  \makeatletter \pst@getcoor{Focus}\pst@tempf
  \psset{linecolor=red}
  \multido{\n=60+5}{18}{\mirrorCVGRay[linecolor=red,mirrorDepth=4.75,mirrorHeight=10](Focus)(! /XF \pst@tempf pop \pst@number\psxunit div def
	\n\space cos XF add \n\space sin neg){Endd1}
	\psOutLine[arrows=->,length=.25](Endd1)(Endd1''){Endd2}
    \mirrorCVGRay[linecolor=red,mirrorDepth=4.75,mirrorHeight=10](Focus)(! /XF \pst@tempf pop \pst@number\psxunit div def
      \n\space cos XF add \n\space sin ){End1}
    \psOutLine[arrows=->,length=.25](End1)(End1''){End2}}
  \makeatother
\end{pspicture}
\end{document}