I am creating .dat file in MATLAB for vertical coma, but after importing in Zemax as a grid phase, I can see in surface sag that it is horizontal coma, rotated 90 degree clockwise. How to resolve this issue?

In terms of physical thickness, when a coating is applied on a face of say a rectangular volume, does it change the actual thickness of the rectangular volume ? or is the coating’s thickness is assimilated to 0 in terms of direction/propagation of rays ? in other words, do coatings only modify the amplitude/energy of rays, or also their locations/directions (like a regular parallel plate for example that also shifts the oblique rays) ?

Hello there friends from the Zemax community, Once again, I would like to ask for your guidance/help with something that I need to implement. I am interested in performing a polarization ray-tracing analysis in non-sequential mode. Let me explain a bit more about what my situation and setup is. I start from some FDTD simulations from where I extract far-field information (Here I model a single point emitter). Since I am assuming that there is no source of decoherence, from my FDTD simulation I am able to extract values of field components (Ex, Ey, etc) that match to a single wavefront surface. In summary, I have a point source for which I can extract the far-field information. Using these field components, I have managed to generate the Poynting vector and consequently used this information to set up a sequence of rays which I import into Zemax. In this case, for each ray I have the direction cosines and the relative intensity which corresponds to my previously calculated Poynting vect

Hello everyone, I am wondering What operands in macro I can use to create a blackbox file? or it have to be API level? Thanks

Hello, I am designing a Fresnel rhomb prism as a half wave plate alternative using ZnSe at 4-9um. I calculated the phase differences as a function of TIR angle and created a polygon .POB file, inserted it as a non-sequential object and verified with CODA 123 that the polarization rotated 90 deg. However, I tested this out across the wavelength range with no change to the merit function, while the analytical formula expects a 0.3deg difference due to dispersion. Another issue I am having is that I don’t really know how to tolerance a polygon. The only idea I have come up with is to make many objects, “Monte-Carloing” it myself. Please share any insights or guidance. Note: The additional reflection facets at half angles are for PBS coating, the prism will be used as a beam combiner. I intended to simply use a table coating file Tp Ts Rp Rs, and make two configurations for the two sorces but I am unsure if this is correct for a tilted incidence angle or if there is a better way to model t

Hello Zemax community, I have a source (ZBF) file which is Gaussian-like in one axis and Lorentzian-like in the other. In addition to the ZBF file, I also have the x and y cross-section far-field angular distribution of power (something like a representative goniometric scan in both axes). Source near-field: Source far-field: ​ I am re-imaging the source through an optimized lens pair, with the goal of understanding the resulting image plane characteristics - primarily understanding if/how diffraction effects through the lens pair might result in an enlarged / rounded spot. Initially, I thought POP would be suitable, but the NA of the source seems to be too large, so I am looking for another way to accurately characterize the resulting image. Looking for some advice on a good alternative approach. - Partially coherent image analysis starting with the ZBF as object? - Ray optics / Huygens PSF? Is there a way to mimic the Lorentzian-like profile in one axis only for the apodization facto

Hi everyone, I am trying to design a 5x Continuous zoom system from scratch. I have tried making paraxial optics with 5x magnification with 4 paraxial lens groups but I am not getting the results (I got focal length of each group from paraxial optics then I tried to design each group separately).

I am trying to do tolerance analysis of a system having multi-configuration. I have created default TDE with parameters. when I am running tolerancing, a error related to TTHI operand is showing. How to resolve this issue.

I am doing some ray tracing through some simple GRIN lenses. If I take GRIN3.dll, depending on what I set to n0, I get different results for intensity with ray splitting on, and the ray passing through the center of the lens (so no bending occurring). Here is an example: n0 = 1, 100% transmitted n0 = 1.5, 96% transmitted n0 = 2, 88% transmitted This occurs with all GRIN dll’s (not just GRIN3), and does not occur with simple ray splitting. It functions as normal without ray splitting on. This doesn’t make physical sense to me. Why is more light reflected from a light ray at normal incidence at higher refractive index without specifying any specific scatter model, split model? As a note, I do not have any scattering, volume physics, coatings, etc in these. It appears to be some kind of index dependent ray reflection? No idea why that is happening. Going out to more extreme refractive indicies, it just trends towards 0 slowly. A few other notes - Adding in coatings does not change transmi

At the page of the knowledge base: How to add coatings and scattering functions to Non-Sequential objects – Knowledgebase (zemax.com) The link behind “leanr more” that directs to : https://www.zemax.com/pages/information-for-zemax-customers-using-solidworks is dead.

Hi,I tried to evaluate astigmatism of curved tilted mirror in sequential mode. Astigmatism is obvious, but Seidel coefficients are zero. Also in Merit Function Editor parameter “ASTI” returns zero. Maybe the reason is that Seidel coefficients ignore the coordinate breaks for tilting.Did not find any topic describing this fact.Does anyone have a solution for getting Astigmatism of focusing system with tilted objects?

Hello I’m trying to implement importance sampling in a model in order to increase the amount of scattered light toward a certain region. I’ve read the documentation and the tutorial online as well as looked at the sample file provided https://support.zemax.com/hc/en-us/articles/1500005488461-How-to-use-importance-sampling-to-model-scattering-efficiently I’ve also looked at the sample file in: Samples\Non-sequential\Scattering\Importance Sampling Demonstration.ZMX In both cases above, the amount of scattered rays in a region of interest increases as is desired. However I have encountered the opposite where the amount of rays decrease. I’ve attached a toy system in which this is observed. Could someone please help me clarify what is going on? In this model I have two systems in one separated by a barrier. Each system as a source that scatters on a rectangle object modeled as a Lambertian scatterer. In the upper system I use Importance Sampling with a target sphere at the detector matchin

When using polarization with “random polarisation”, how are the polarization created and assigned to the simulted rays ? Is there a 2pi random distribution that is sampled for each ray’s polarization state ?

Dear All, I am getting not enough memory for 3d plate list error even after my System has enough Ram available. I have attached the screenshots. I was trying to do the stray analysis but unable to do due to this error. Please help me. Thanks,

I want to fix the zoom, pan, and orientation of the geometry in my NSC shaded model, so when I update the position of one of the objects, it doesn’t change back to the default layout. Is there a way to do this?

I am running a POP analysis of a system that has a zernike standard phase surface. I am trying to add defocus using this surface and observe it in the POP phase output. I am able to see small magnitudes of defocus but once I try to add 10 waves or more the POP output does not appear to reflect the added defocus. Is this a sampling issue or something else? 0 waves of defocus 1 wave of defocus 5 waves of defocus 10 waves of defocus

The zemax part designer has a ‘Expose Point’ that allows the sketch point to be directly modified and optimized from the non-sequential component editor. I’d like to do the same with the angle in a ‘ROATE’ command in the script. Is that possible? Or is the another approach that I should use? Thanks in advance for any help, John

Hi, I want to design a schmidt prism in seq mode. How should I approach?

We use volumetric diffusing plastic shell or plate for color mixing the LED array. The info from the vendor is just material and % of added particles like SiO2. Substrate is typical PMMA or similar plastic. Give just info like this what’s the best or simple way to simulate this in Zemax NSC? I’m thinking of Mie or H-Greenstein model but not sure how to set up parameters there with just info like this.

I created a TIR lens by creating two objects (one big aspheric lens and a smaller cylinder volume) and forming Boolean subtraction A-B to make void hole through the lens. This is typical shape of TIR lens for LED. Problem here is that Zemax makes error when ray source placed too close the lens in the region of aspheric lens volume although it’s where it is cut off by the cylinder volume. Normally we disable base elements of Boolean object. It works only if the ray source is placed outside the base lens volume. Is there any way to get around this issue in Zemax?

Hi all, I have a question for detector in non-sequential mode. We often use ‘nit’ to evalute the display system, but I did not find how to change the unit to ‘nit’ for detector in non-sequential mode like LightTools did, so is there anyway that it can be directly displayed in Zemax or we have to export the data from Zemax and do some conversion? Thank you, Kaden

Hi, I have been tring to reproduce the phase produce by the Zernike standard phase, and I believe there is an issue with the terms 7 and 8, corresponding with vertical and horizontal coma. Theoretically they should be Z7=sqrt(8)*(3*ro.^3-2*ro).*sin(phi); Z8=sqrt(8).*(3*(ro.^3)-2*ro).*cos(phi); However, after a lot of headache I realized that they behave like: Z7=sqrt(8)*(3*ro.^3).*sin(phi); Z8=sqrt(8).*(3*(ro.^3)).*cos(phi); Ithought maybe it a different stardard, but in the original paper referred R. Noll, "Zernike polynomials and atmospheric turbulence", J. Opt. Soc. Am., Vol. 66, No. 3, p207 (1976) The definition is sqrt(8)*(3*ro.^3-2*ro).*sin(phi). It is pretty obvious noticing that radially is just a cubic term without the linear term when you represent the wavefront map. It does like the 7th (or 8th) order zernike represented in many places. This is very surprising. Anybody else noticed this issue? I am using Ansys Zemax OpticStudio 2023 R2.02. Thanks, Miguel ZEMAX 7TH ORDER ZERN

Is it possible to to model a rotationally-symmetric Fresnel lens that’s bent into a cylindrical shape? If I understand correctly, Extended Fresnel doesn’t allow for a cylindrical substrate Cylinder Fresnel doesn’t allow for rotationally-symmetric Fresnel features Fresnel 1 & 2 require a flat substrate Thanks!

I was eager to try out this new feature in 2024 R2.02, but I don’t think it’s working properly. I tried exporting a simple file, one OAP mirror with 9 fields defined. When opening the file in SpaceClaim, I did not see any ray footprints on the mirror. I tried all 4 file type options, and none seem to do what I would expect. Can somebody explain the intended workflow and outcome here? Thanks, Sean

Hello, I want to ask how exactly we can calculate the state of polarization in general 3d form or how zemax do it given the optical axis orientation n and the propagation direction of light k How the ordinary and extraordinary E are calculated in this case I think From k and initial polarization we calculate Ein and then Ee​=(Ein​⋅n)n Eo​=Ein​−(Ein​⋅n)n Eo experience no and Ee experience effective refractive index Where I can find some detail calculation steps ? Thanks