![]() ![]() ![]() If you can introduce more degrees of freedom, for example radius of curvature on the lenses, you'll probably achieve better collimation. With just this one variable, it's as expected the output beam won't be perfectly collimated. I think this partly is due to the fact you only allow one varable, which is the separation between the two lenses. As an example, a free-form mirror is optimized to maximize the brightness of an LED from 23 Cd to >250 Cd in just. The methods are to use Pixel Interpolation, aggregate detector data (moment of illumination data) and the orthogonal descent optimizer. I can see in your layout, most of the rays are collimated with some outliers. This blog provides a recommended approach to the optimization of non-sequential optical systems. If you don't want to share your file in the forum, you can either email it to or create a case in MyZemax and attach the file there.Īs for the TIR error message in the Sequential merit function editor, you can swtich the Pupil Integration from Gaussian Quadrature to Rectangular array and check Delete Vignetted, that should get rid of that error message. Examples of Illumination Systems Optimization of a Parabolic Reflector 2. I tried to build it but didn't get identical LDE as the one you showed. Would it be possible for you to share the file? I can see the LDE from your screenshot but it's missing the System Aperture definition. Let me know if this idea works for you, or if you have any other questions. Extreme precision is not required for good optimization results three significant figures is usually adequate. Experimental methods of measuring MTF are generally not repeatable below 0.1 in any case. This will speed up the optmization process. Non-Sequential conversion of freeform surfaces Curriculum TMA design using freeform surface 2.1 Three Mirror Anastigmat (TMA) using Chebyshev Polynomial surface 2.1. Note that generally speaking, 1 convergence is adequate for the purposes of optimization and tolerancing. When done, you can then convert this system into NSC mode, and run further optimization in NSC mode if you are interested in using a specific source object in NSC mode. This way you could take advantage of the fast optimization in Sequential mode. Sequential mode also provides a default merit function criterion for Angular spot size. Usually we recommend using Othogonal Descent for NSC optimization, but you could also try switching between DLS and OD to see which algorithm works better for your system.īased on the layout plot, if your system contains only these two lenses, I would recommend maybe starting the design and optimization in Sequential mode first. This is the main reason why the NSC optimization takes much longer. The NSC optimization usually takes longer than Sequential optimization, because in Sequential mode, with Gaussian Quadrature or Rectangular Array, OpticStudio usully only needs to trace couple hundreds of ray, while in NSC, we are looking at million rays or more which could also split and scatter. I looked at the screenshot of your optimizaton wizard. To optimize for collimation, one chould use the default merit function with Criterion set for RMS Angular Radius. Thank you for contacting us with your inquiry! ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |