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alexander_dumontMonochrome

When running batch ray trace inside a loop in C#, ReadNextResultFull fails after first iteration

Hello fellow Zemax ZOS-API users! I’m getting my hands dirty with the ZOS-API, and I’m currently running a C# code to allow me to use batch ray trace. This reproduces my input object onto my output image plane very nicely. However, I then tried to put this into a for loop over the range of thicknesses I want to conisder for one eleemnt in my system. I’m using directpol, and the addrays and readnextresults and ReadNextResultFull, and the method runs perfectly fine on the first lop iteration, but then fails for the concurrent lops. I tried to run the program by putting the loop inside the C# code and by calling it from an external program (MATLAB using system command) but in both cases, the success line fails after the first iteration, even though in MATLAB I am asking for a brand new instance of the C# code. to run. So I am stuck running it one parameter at a time, which is not what I want to do. Anyone else facing this problem? Here is a copy of the relevant part of my C# file:var z_o

nmattu60Monochrome

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Direction of light through a lens (sequential mode)

Hello! I am fairly inexperienced with OpticStudio, so the solutions to my question may be simple. Currently I am trying to model a system whereby light originates from the left surface, goes through a beam-splitter (the cube), and I analyze the output after the bottom lens (the one on the right I would like to ignore -- say this light leaves the system). The issue I am facing is that I am not able to establish a surface after the bottom lens and, additionally, the light is reflecting off of the rounded end of the lens and ending back at the flat end. Does anyone have any ideas?

James.FryUltraviolet

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STAR Module: "No matl. info"

I’m using the STAR module and get a “No matl. info” message when I attach FEA data to a surface. After that, I can’t attach any more data. Any idea what the issue is here? FYI, excerpt of thermal FEA data:-0.196850 0.000000 0.000000 49.041954-0.139194 0.139194 0.000000 49.042702-0.072500 0.000000 0.000000 49.692856-0.072500 0.072500 0.000000 49.5909350.072500 0.000000 0.000000 49.6928560.072500 0.072500 0.000000 49.590950Thanks!

ssivanandamSingle Emitter

Licensing and Installation

Academic License Features

I am interested in purchasing the academic license of Zemax from Ansys. I was told that the academic license comes with the enterprise version. Does this come with the STAR module?

adam2877Single Emitter

Change wavelength in Geometric Image Analysis

Hi All,I’m trying to automate some Geometric Image Analysis tasks but am struggling to change the wavelength in geometric image analysis.python 3.10.9Optics Studio 23.1 I’ve set up the image analysis I want in the project (Cross X, Field size, image size, pixels etc). I’m trying now to loop over wavelengths and save the results. My problem is I can’t figure out how to change the wavelength number within ZOS-API. As far as I can tell the IMA keywords don’t have Wavelength. Thanks for any help!from the help of ModifySettings keywords Geometric Image Analysis IMA_FIELD: The field size. IMA_IMAGESIZE: The image size. IMA_IMANAME: The image file name. IMA_KRAYS: The number of rays x 1000. IMA_NA: The numerical aperture. IMA_OUTNAME: The output file name. IMA_SURFACE: The surface number. IMA_PIXELS: The number of pixels. example code:geo = TheSystem.Analyses.New_GeometricImageAnalysis()geo_set = geo.GetSettings()cfgfile = os.path.join(pth,'geo_an_sett.cfg')geo_s

nadav.amitaiFully Spectral

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Lens cannot be traced, tolerances may be too loose vs mtf

Hi all, During tolerancing of some lenses (using the mtf as criteria) I get the “Lens cannot be traced, tolerances may be too loose!”However, opening one of this the monte carlo files it seems like the mtf is bad but larger than zero. What can be the reason for this? Thanks,Nadav

sathyaInfrared

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How to define numerical aperture for multimode fiber in non-sequential mode?

I am doing light collection using multimode optical fiber. I have designed fiber in non-sequential mode using the object type "cylinder volume" . Is the fiber design is equivalent to multimode fiber? How to define numerical aperture for fiber in non-sequential mode?

yuan.chenZemax Staff

DLL: Paraxial Lens DLL for Non-Sequential Mode

This diffractive DLL make the face behave like a Paraxial Lens which can correctly consider phase.Note the Paraxial Lens correctly gives phase information only when the object/image distances are correctly given. Therefore, the parameter “Image Position” should be explicitly given. If the image is formed at infinity, the parameter “Image Position” is set to 0. For the other conjugations, the image position is the distance between the image plane and the diffractive object along the local axis.There are a few limitations when using this diffractive DLL.(1) The ray must be from -z side and propagate to +z side.(2) Only the transmit rays are considered, the reflect related parameters can be set the same way as the included sample files.(3) Only order 0 are considered.(4) Refractive index at two sides must be AIR (n=1.0).To obtain the same layout, please check the ‘Split NSC Rays’ option in NSC 3D Layout.Please pay attention to the detector size and the PSF Mode Wavenumber when you change

Christabelle TiongMonochrome

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Light beam not Reflecting with CAD object in Hybrid Mode

--Need Help--I have this issue, I have two CAD objects in Hybrid mode. I would want the light beam to reflect after it touches on the CAD surface. However, the light beam seems to ignore the coated surface and passes through. Any reason why this is happening?

JuliaUltraviolet

Got a question?

ZPLM tricks that you may don't know, but can be incredibly useful

I will share examples of using ZPLM as a workaround to solve some problems that I see/ you may experience in my daily support 😀.

nmattu60Monochrome

Got a question?

Direction of light through a lens (sequential mode)

Hello! I am fairly inexperienced with OpticStudio, so the solutions to my question may be simple. Currently I am trying to model a system whereby light originates from the left surface, goes through a beam-splitter (the cube), and I analyze the output after the bottom lens (the one on the right I would like to ignore -- say this light leaves the system). The issue I am facing is that I am not able to establish a surface after the bottom lens and, additionally, the light is reflecting off of the rounded end of the lens and ending back at the flat end. Does anyone have any ideas?

James.FryUltraviolet

Got a question?

STAR Module: "No matl. info"

I’m using the STAR module and get a “No matl. info” message when I attach FEA data to a surface. After that, I can’t attach any more data. Any idea what the issue is here? FYI, excerpt of thermal FEA data:-0.196850 0.000000 0.000000 49.041954-0.139194 0.139194 0.000000 49.042702-0.072500 0.000000 0.000000 49.692856-0.072500 0.072500 0.000000 49.5909350.072500 0.000000 0.000000 49.6928560.072500 0.072500 0.000000 49.590950Thanks!

ssivanandamSingle Emitter

Licensing and Installation

Academic License Features

I am interested in purchasing the academic license of Zemax from Ansys. I was told that the academic license comes with the enterprise version. Does this come with the STAR module?

nadav.amitaiFully Spectral

Got a question?

Lens cannot be traced, tolerances may be too loose vs mtf

Hi all, During tolerancing of some lenses (using the mtf as criteria) I get the “Lens cannot be traced, tolerances may be too loose!”However, opening one of this the monte carlo files it seems like the mtf is bad but larger than zero. What can be the reason for this? Thanks,Nadav

sathyaInfrared

Got a question?

How to define numerical aperture for multimode fiber in non-sequential mode?

I am doing light collection using multimode optical fiber. I have designed fiber in non-sequential mode using the object type "cylinder volume" . Is the fiber design is equivalent to multimode fiber? How to define numerical aperture for fiber in non-sequential mode?

Christabelle TiongMonochrome

Got a question?

Light beam not Reflecting with CAD object in Hybrid Mode

--Need Help--I have this issue, I have two CAD objects in Hybrid mode. I would want the light beam to reflect after it touches on the CAD surface. However, the light beam seems to ignore the coated surface and passes through. Any reason why this is happening?

nmattu60Monochrome

Got a question?

Establishing a simulated image in sequential mode with a beamsplitter

Greetings! Forgive me for I am fairly new to this software, but I seem to be having trouble understanding how to use the image simulator. Below is what I have setup. I am trying to test a beam-splitter setup with the image simulator, but do not know how to get a clear image. Do you have any ideas?Lens DataMulti-Configuration EditorUndesired (blurred) image

MarzannaInfrared

Got a question?

determination of the spot position shift between two planes

Hi,Although I have already created a topic on this, but I feel I did not explain properly the information I need to extract from the Zemax ( I do apology for it). I need to determine change of the spot positions on the image plane vs scan lens plane. I need to do it in a form of the map ( like on the drawings below). The scan lens plane is a reference point ( as this is a first lens surface after galvo mirrors). If there is a shift between points A-A’, and B-B’ I need to be able to measure it.In my previous post, I messed up the spot position on the field with the focus on on-axis and off-axis rays. Beside, even if the tips given me kindly by Michael H that I should have used FFT Through Focus MFT also applied for spot shift I would still don’t see how this plot could tell me about shift of the spot position. On my graph, all the lines overlapped.Thank you for your time, and patience :)Regards,Marzanna

nadav.amitaiFully Spectral

Got a question?

tolerance analysis with diffractive surface

Hi all, Is there a way to do tolerance analysis to diffractive surface(binary 2)? Thanks

Sahil Nazir PottooStudent

Got a question?

Can Henyey-Greenstein distribution be used to model bulk scattering due to raindrops and snowflakes?

Hi,Henyey-Greenstein model describes the angular distribution of light scattered by small particles, ranging from the scattering of light by biological tissue to scattering by interstellar dust clouds [https://support.zemax.com/hc/en-us/articles/1500005577062-Using-the-Henyey-Greenstein-distribution-to-model-bulk-scattering].Will it be right to use Henyey-Greenstein distribution in Non-Sequential Mode to model bulk scattering due to raindrops and snowflakes?Thank you for the reply! [Mod note: Moved to general forum as this is not a STAR-related question].

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