Hi Guys, using Opticstudio Professional version. Is there a way to optimize a CAD file (.iges or .step) in the professional version or the CAD file can only be used for visualization and ray tracing? 

Hi, I’m trying to learn how to use tolerancing tools in zemax. For this, I uploaded a singlet file from thorlabs catalog, to start with something simple. No merit function or variables in this file. I do not understand why the RMS spot value is not the same in the tolerancing summary and in the spot diagram.I tried different sampling but it didn’t help. Here the values are close (7.7 and 9.1 microns), but with more complex files the difference was really large.See capture: 

Hi All! I have created an User Extension using C++ and it has built .exe file and can run it when I open Zemax. Is it possible for me to run the user extensions in MATLAB or Python using any ZOS API function?

Hello everyone!In my current optical design, I’m observing ray crossings at the image plane (as shown in the attached image). Optimizing for spot size at a posterior plane often turns out to be insufficient to correct this issue.Is there any parameter, operand, or control in Zemax that can help manage or prevent this ray intersection so that the rays remain more orderly when reaching the image plane like trying to get a ‘perfect’ gaussian sphere as wavefront?Thank you in advance!  

Hello, Going over this material, is there an optimizer available that anyone can point me to? By that I mean merit function. Because not sure what I will be optimizing and where to insert the mask that I want to project. Its not too clear.  Fly’s eye arrays for uniform illumination in digital projector optics – Ansys Optics  

Hi,In the image simulation analysis what is happening when I’m using a wrong ‘field height’?What Zemax do when I’m using a larger field height and smaller field height?Where can I read about the image simulation engine and how to adjust each field type for the image simulation.When to define the pixel size?Last question, lets say I have a lens designed for object height of 10x10.In the Field Data Editor I set the object height to 5X7. What  field height should I use in the image simulation?Thanks in advance.Eyal

Hi all,I'm looking for help understanding how to effectively extend depth of field using optical design principles—specifically within the realm of fundamental optics (no digital post-processing).The concept I'm exploring involves a multi-focal lens system, similar in spirit to intraocular lenses. To illustrate, I’ve configured a simple f/5.5 system using a single Binary 3 surface. This allows for two annular regions where I varied the phase² and phase⁴ terms to achieve nearly perfect spot sizes at two distinct object positions—one 25mm before and one 25mm after the nominal object at 250 mm. The focal length is approximately 10 mm.In the diagram below:Green rays represent a conventional single-focus lens. Blue rays show the multi-focal design, optimized for object distances of ±25 mm from the nominal. The inner multi-focal region (longer focal length) has a radius equal to half the full aperture.Here’s the resulting MTF vs. object distance plot:Red curve: single-focus lens (green rays)

I want to design an underwater optical system using non-sequental OpticStudio.  I know how to do this in sequential, but doing it in non-sequential is baffling me.  Any advice?

Hello community, I have a CAD object created from a STEP file loaded into the lens editor. When I run a raytrace and save rays, I see a correct raytrace. When I try to use the X_HITFACE(n,b) filter to isolate and visualize specific rays it does not work. I set up the filter to show only rays that pass directly thru the faces that define the lens region. The filter returns no rays passing thru the lens face even though I can clearly see rays passing and refracting at the lens face. I have correctly identified the lens faces using the CAD tab under the object of interest. Does the filter not work on CAD objects.  I am using Ansys OpticStudio 2025 R2.01

I have a new laptop and need to get the install .exe that will work with my black USB key with expired support.  When I look at a lens that I believe was generated with that version is see VERS 190513 20 26795 26795If that us helpful to identify the version that worked with my black USB. Can anybody help get this going again? Harvey Spencer

Hello Friends, Looking for a knowledge-based article on how to design the TIR lens pretty much as heifeng has done in his linked in profile. I want to be able to follow the article and create the same types of TIR lens. Can someone please fwd me the KB article if there is one or any instruction?  https://www.linkedin.com/pulse/artrix-tir-toolbox-haifeng-ding-8kkkc/?trackingId=md6AK5RuSQayBhTrKb21EA%3D%3D