%%
%% 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}
