\documentclass{article}% 2003-01-24 \usepackage{pstricks} \usepackage{pst-optic} \usepackage{pstricks-add} \pagestyle{empty} \parindent=0pt \begin{document} \begin{pspicture}(-8,-3)(7,5)%\psgrid[subgriddiv=0,griddots=10] \rput(0,0){\lens[lensWidth=1,lensGlass=true,% lensHeight=6,focus=4,drawing=false,AB=2.5]} {% \psset{linewidth=0.5pt,linestyle=dashed,arrowsize=5pt,arrows=|<->|} \psline(-8,0)(4,0) \pcline(-7.75,-3)(0,-3) \lput*{:U}{2f} \pcline(0,-3)(4,-3) \lput*{:U}{f} \pcline(7,0)(7,4) \lput*{:U}{f} \pcline(4,5)(5,5) \lput*{:U}{s} \pcline(5.25,2.3)(5.25,2.8) \lput*{:U}{s} } \uput[90](0,3){\Large L} \uput[45](-7.7,3){\Large B} \uput[45](-7.7,-2){\Large E} \uput[270](3,-0.5){\Large D} \uput[-45](4,0){\Large A=F} \uput[270](3,2){\Large S} \uput[90](4,4){\Large Sp} \uput[90](3.5,3.25){\Large B'} \uput[0](6.3,2.25){\Large B''} \uput[-90](6,1.1){\Large M} \psarc[linewidth=0.5pt](-7.75,2.5){0.5}{-90}{0}\qdisk(-7.55,2.3){1pt} \rput{210}(F'){\mirrorTwo} {% \psset{fillstyle=solid,fillcolor=lightgray} \rput{210}(4,2.5){\psframe(-1,0)(1,0.2)} \psframe(-8,-3)(-7.75,3) \psframe(3,4)(3.8,4.2)\psframe(4.2,4)(5,4.2)% }{% \psset{linewidth=1pt,linecolor=red,% arrowsize=5pt,ArrowInside=->,ArrowInsideNo=3} \psline[linecolor=blue,ArrowInsideOffset=-0.2](F')(4,2.5) \psline[linecolor=blue,ArrowInsideOffset=-0.2](4,2.3)(6,2.3) \qdisk(6,2.3){2pt} \psline[linestyle=dashed,arrows=-](F')(5.1,4) \psline[linestyle=dashed,arrows=-](5,2.8)(6,2.8) \psline(4,4)(F') \psline[linecolor=blue,ArrowInsideOffset=-0.2](I)(F') \psline(F')(I) \psline[linecolor=blue,ArrowInsideOffset=-0.3](-7.75,2.5)(I) \psline(I)(-7.75,2.5) } \psframe(5.5,1.1)(6.5,3.5) \multido{\r=1.3+0.2}{12}{% \psline(6.1,\r)(6.5,\r)% } \end{pspicture} Sp Spalt; D Drehspiegel; L Sammellinse; E Endspiegel; S halbdurchlässiger Spiegel; M Maßstab \end{document}