<font face="Default Sans Serif,Verdana,Arial,Helvetica,sans-serif" size="2">
<div>Hi Jan and Peter,</div><div><br></div><div>Thank you very much for the information. So, I will use the cylindrical singlet lens without color correction</div>
<div>since I will start using monochromatic illumination. I alredy saw that they are using this lens in the SPIM-DSLM</div>
<div>from the Open SPIN Microscopy google site. </div><div><br></div>
<div>Kind regards,</div><div>Edgar<br><table border="0" cellpadding="0" cellspacing="0" width="457,5">
<tbody><tr><td colspan="3"><font size="2" face="sans-serif">_________________________________________________________________________<br>
<br>Fraunhofer-Institut für Produktionstechnologie IPT <br>Edgar Escobar Nieto <br>
<br><br> <br> <br>Steinbachstraße 17 <br>52074 Aachen <br><br>skf-ee@ipt.rwth-aachen.de </font>
<font size="3" color="blue"><u><br></u></font><a href="http://www.ipt.fraunhofer.de/">
<font size="2" color="blue" face="sans-serif"><u>http://www.ipt.fraunhofer.de</u>
</font></a><font size="2" face="sans-serif"><br>_________________________________________________________________________</font>
<br></td></tr><tr><td valign="top" width="225"></td><td width="7,5"></td>
<td valign="top" width="225"></td></tr></tbody></table></div><br><br><font color="#990099">
-----Jan Huisken <huisken@mpi-cbg.de> schrieb: -----</font><div style="padding-left:5px;">
<div style="padding-right:0px;padding-left:5px;border-left:solid black 2px;">
An: skf-ee@ipt.rwth-aachen.de<br>Von: Jan Huisken <huisken@mpi-cbg.de><br>
Datum: 02.07.2013 14:25<br>Kopie: openspim@openspim.org, Peter Gabriel Pitrone <pitrone@mpi-cbg.de><br>
Betreff: Re: [OpenSPIM] About the cylindrical lens<br><br>Hi Edgar,<div>
<br></div><div>Remember, the cylindrical lens does not form the light sheet. The light sheet is generated by the (well-corrected) illumination objective lens so that, in the case of multi-color excitation, you will not get any focal shift.</div>
<div><br></div><div>Instead, the cylindrical lens just "prevents" the objective lens from focusing the light also in the vertical dimension. If now your cylindrical lens is not color-corrected, the beam coming out of the illumination lens is not perfectly collimated in the vertical dimension across all colors. In the worst case this would lead to a slightly inhomogeneous illumination. We have never had any problems with cylindrical singlet lenses, which are not color corrected. In fact, we use them on most of our setups.</div>
<div><br></div><div>Best</div><div>Jan</div><div><br><div><span class="Apple-style-span">
<span class="Apple-style-span"><div><span class="Apple-style-span"><div>
<div style="font-size: 11px; ">Dr. Jan Huisken</div><div style="font-size: 11px; ">
<b>MPI of Molecular Cell Biology and Genetics</b></div><div style="font-size: 11px; ">
Pfotenhauerstr. 108, 01307 Dresden, Germany</div></div></span></div></span>
</span></div><br><div><div>On Jul 2, 2013, at 10:54 AM, Peter Gabriel Pitrone wrote:</div>
<br class="Apple-interchange-newline"><blockquote type="cite"><div><br>
Hello Edgar,<br><br>Your solution of using the simpler cylindrical lens will work well if you don't use other laser<br>
lines. Stay with the 50 mm focal length, as changing it will change the properties of the<br>
light-sheet. I'm in the process of testing different lens combinations, and will update the wiki<br>
accordingly as to what I find.<br><br>Best Regards,<br>Pete<br><br>-- <br>
Peter Gabriel Pitrone - TechRMS<br>Microscopy/Imaging Specialist<br>Prof. Dr. Pavel Tomancak group<br>
Max Planck Institute for<br>Molecular Biology and Genetics<br>Pfotenhauerstr. 108<br>
01307 Dresden<br><br>"If a straight line fit is required, obtain only two data points." - Anon.<br>
<br><br>On Fri, June 28, 2013 6:26 pm, <a href="mailto:skf-ee@ipt.rwth-aachen.de">
skf-ee@ipt.rwth-aachen.de</a> wrote:<br><|> Hi dear All,<br><|><br>
<|> I just have a problem:<br><|> Since more than 4 weeks ago I ordered the thorlabs parts for the OpenSPIM, the only one is<br>
<|> missing is the cylindrical lens (it was supposed to arrive like two weeks ago). I just<br>
<|> contact them and the problem is that they don't have in stock the ACY254-050-A; they <br>
<|> would need to manufacture it and that would take a little long time.<br>
<|><br><|> So they propose to use the ACY254-075-A, the only difference of this lens is that the focal<br>
length<br><|> is 75 mm<br><|> instead of 50 mm. I can see from the Open SPIM design that maybe would be possible to use this<br>
<|> lens<br><|> if it is moved 25 mm closer to the first two achromatic doublets used to expand the beam in<br>
<|> comparison<br><|> to the position of the 50 mm focal length lens. I am not an optics expert but maybe it can work.<br>
<|><br><|> Anothe solution I found out is to use the LJ1695RM-A, a cylindrical plano-convex lens from<br>
<|> Thorlabs with focal length 50 mm,<br><|> AR coating 400-750 nm but with the disadvantage that it is not<br>
<|> Achromatic, <a href="http://www.thorlabs.de/thorproduct.cfm?partnumber=LJ1695RM-A">
http://www.thorlabs.de/thorproduct.cfm?partnumber=LJ1695RM-A</a>. So if I will use only<br>
<|> monochromatic illumination sources maybe is not a big deal to use this lens.<br>
<|><br><|> So, what do you think is the best solution? I would really appreciate if someone can give me<br>
<|> her/his advice.<br><|><br><|> Kind regards.<br><|> Edgar Escobar Nieto<br>
<|> _________________________________________________________________________<br>
<|><br><|> Fraunhofer-Institut für Produktionstechnologie IPT<br>
<|> Edgar Escobar Nieto<br><|><br><|><br><|><br>
<|><br><|> Steinbachstraße 17<br><|> 52074 Aachen<br>
<|><br><|> <a href="mailto:skf-ee@ipt.rwth-aachen.de">skf-ee@ipt.rwth-aachen.de</a>
<br><|> <a href="http://www.ipt.fraunhofer.de">http://www.ipt.fraunhofer.de</a>
<br><|> _________________________________________________________________________<br>
<|> _______________________________________________<br><|> OpenSPIM mailing list<br>
<|> <a href="mailto:OpenSPIM@openspim.org">OpenSPIM@openspim.org</a>
<br><|> <a href="http://openspim.org/mailman/listinfo/openspim">http://openspim.org/mailman/listinfo/openspim</a>
<br><|><br><br><br><br>_______________________________________________<br>
OpenSPIM mailing list<br><a href="mailto:OpenSPIM@openspim.org">OpenSPIM@openspim.org</a>
<br>http://openspim.org/mailman/listinfo/openspim<br></div></blockquote>
</div><br></div></div></div><div></div></font>