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M
ma-sundeMonochrome
asked in ZOS-API
ZOS-API: NumSegs=0 from IRayTraceNSCData.ReadNextResult for All Manually Added Rays

Hi all,I'm using the ZOS-API in Python (OpticStudio 2024 R1) with IBatchRayTrace to trace manually defined NSC rays. I'm creating the interface using teh batch tool and adding rays using nscData.AddRay(...).The trace completes successfully (batchTool.Succeeded is True, and RunAndWaitForCompletion() doesn't crash ). However, when I read the results using nscData.ReadNextResult(), the numSegments output parameter is consistently 0 for all rays. This happens even when:The system is minimal (new file, 1 wavelength, 1 Standard Lens, 1 Detector Rectangle). Rays are defined with various trace options (None, UsePolarization, UseSplitting, UseScattering, and combinations). The ray path clearly interacts with objects (e.g., passes through the lens and hits the detector).It also doesnt show any errors...Is it expected that IRayTraceNSCData.ReadNextResult will return numSegments = 0 for simple interactions like refraction or absorption when rays are launched via AddRay? If so, what is the intended

40
M
O
OliverInfrared
asked in Got a question?
Quantifying Back Reflections in Zemax for Optical Fiber Endoscope

Hi,This is Oliver. I’m currently working on an optical fiber endoscope project, where minimizing back reflections is critical for our application in optical coherence tomography (OCT).In particular, I’m looking to quantify the back reflections from specific lens surfaces—such as the ball lens-air interface highlighted in the attached figure. The system involves a single-mode fiber launching light through a segment of coreless fiber and a ball lens. The majority of the back reflections appear to originate from the ball lens-air interface.My goal is to use Zemax to estimate the amount of power reflected back into the single-mode fiber. For example, if the input power is 10 mW, is it possible to calculate the power reflected back toward the source in Zemax?Ultimately, I plan to optimize the material and geometry of the ball lens to minimize these reflections. I’ve attached the Zemax file for your reference, and I would appreciate any guidance or suggestions on how best to approach this an

471
Rishab
Hans-Jürgen Feige
Hans-Jürgen FeigeVisible
asked in ZOS-API
ZOS-API "GETZERNIKE"

Hello,We are urgently looking for an alternative to ZPL-GETZERNIKE using ZOS-API.The point is that we cannot tell “TheSystem.MFE.GetOperandValue(MeritOperandType_ZERN, “ the maximum term of Zernike.“TheSystem.MFE.GetOperandValue(MeritOperandType_ZERN, “ always develops only up to the given coefficient :-(MAny ThanksHans-Jürgen

85015
Daniel Dominguez
D
DusanVisible
asked in Got a question?
OpticStudio 23.2.1 "freezes" while saving file

HelloUsing Interference Example 1- A Simple Interferometer from SAMPLES folder I created a simple setup to test a right-angle prism with pyramidal error. At the end I wanted to save the file but OS just froze and didn’t react any more - even after a longer time. I ended the program in Task Manager and opened it again without problem. The file to-be-saved before seemed to have saved well and it was possible to continue the work. I tried to save again and OS froze again. And so many times… In my last trial I wanted to check Preferences and after some time in Preferences OS froze again.All other sequential and non-sequential files that I have behave normally.What could be the reason. Attached is the screenshot of the file.Thanks, Dusan

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Bharat
BharatSingle Emitter
asked in People & Pointers
Converting phase from a DOE to a refractive lens

  

240
Bharat
turner12345
turner12345Single Emitter
asked in Got a question?
ANSY logo contaminating graphics windows

How do I turn this off? We pay to use Zemax, not to be an advertiser for Ansys.

762
Sean Turner
Ultraviolet
Egis
EgisSingle Emitter
asked in ZPL
Through Focus Spot Diagrams separated by wavelengths

The current Through Focus Spot Diagram (TFSD) merges all wavelengths in the same plot, however it provides separation between fields. Right now I’m cloning windows and set the wavelength separate in each window.Is it possible to have a “simple” script to have them separate by wavelengths for a single field? What could be a command for the TFSD plot then?In principle it gives a different view to a Focal Shift.  

130
Egis
S
sathyaInfrared
asked in Got a question?
How to design optical fiber in Zemax student version?

I am using zemax student version. Can anyone tell me how to design optical fiber?

331
C
Fully Spectral
Z
ZurMonochrome
asked in Got a question?
NSQ lens edge thickness

Is there an operand for lens edge thickness in non seq mode? (for standard lens object)

411
David.Nguyen
Luminary
nalewis
nalewisSingle Emitter
asked in Got a question?
PSF with Gaussian input

Hi, I am new to using Zemax I am trying to use the PSF functionality to simulate how the PSF/focused beam size changes with input beam size.Since the imaging is diffraction-limited, I assume I can only use PSF functionality to determine the output beam size. How do I change the input beam size/will this change the PSF result?  Can I set the input beam to be Gaussian? This is what we have in our real system.

531
Rishab
M
Marc.DerrienInfrared
asked in ZPL
ZRDPLAYBACK no longer works?

Hi,I would like to use the ZRDPLAYBACK function, but it doesn't seem to work, I think it doesn't take filters string into account.I have similar problem iy I use a function like  NSTR 1, 1, 0, 0, 1, 1, 1, 1, A$ ,”W1”,2Marc.

534
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simon.schroeder_01Infrared
asked in Got a question?
EFLY/EFLX operands considering Zernike coefficients

Hello, so far I was under the impression that the EFLY/EFLX operands ignore all Zernike coefficients (e.g. of Biconic Zernike surface) and purely consider the radii of curvature . Now I discovered that the coefficient “Zernike 4” and its effect on the curvature is considered for EFL calculation. Although the Zernike 4 polynomial is proportional to r² and thus directly changes the effective radius of curvature, it is by far the not the only Zernike polynomial effecting the EFL in X- and Y-direction (e.g. Zernikes 5, 6, 11, 12, 13, ...).  Is this change in EFL calculation a bug or intented? What was the OpticStudio release this change in ELFY/EFLX was introduced with? I could not find any mentions in the release notes.  Best regards, Simon

481
Jeff.Wilde
Luminary
Rishab
RishabSingle Emitter
asked in Got a question?
Surface Deformation plot not analogous to the wavefront error

Hi,I am trying to see the wavefront error due to surface deformations and also extract the zernike values with the help of STAR nodule in Zemax.The FEA data from NX is imported to STAR which I am fitting onto a flat mirror surface. After data fitting there is a difference in the wavefront map profile and the actual deformed surface profile.I am unable to understand what the cause may be. Any help is appreciated.Regards,Rishab

260
Rishab
mlunin
mluninMonochrome
asked in Got a question?
GRIN Lens Design Tolerancing

I have an optical design with GRIN lenses and want to tolerance it. How does tolerancing work with GRIN systems - is there anything that changes at all?For example - In which direction does doing a thickness tolerance remove/add GRIN material from? For example, if the part is 0.1 mm thicker, does it add GRIN based on the definition of n(x,y,z) and the gradient? What about when the part is toleranced to be thinner? Which section of GRIN material is removed? How does tolerancing index work? Does it apply a random offset to each part? Constant offset? Similarly, does the GRIN profile also get tilted when doing a tilt tolerance? Note - this is using a custom GRIN user defined *.dll. 

160
mlunin
T
Tali.mutatInfrared
asked in Got a question?
"Y only" / "X only" Type in Geomerical Encireled Energy calculation

Zemax Team Hi,Please explain how Zemax calculates the amount of Geometrical Energy for “Y - only” / “X - only”  Type  and what does it mean?Is it a fraction from the “Encircled Geometrical Energy” ?Thanks in Advance,Tali M.

210
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Toshihiro
ToshihiroInfrared
asked in 質問コーナー
スポットダイアグラム画像を保存できない。

Ansys Zemax OpticStudio 2025 R1.00に先日アップデートしたところ、スポットダイアグラムが保存できない現象が出ております。エラーメッセージの画像を添付いたします。改善方法をご教示いただけないでしょうか？以下がわかったことです。 この現象はファイル依存性はなく、ZOSを立ち上げた際の初期ファイル(LENS.zmx)でも起こっています。 この現象はPC再起動をしても、ソフトを再起動しても改善できませんでした。 この現象はスポットダイアグラムの画像保存時には起こりますが、3Dレイアウトの画像保存時には起こっていません。 以上、どうぞよろしくお願いいたします。    

1337
Toshihiro
SUPRAVAT MONDAL
SUPRAVAT MONDAL
asked in Got a question?
Circular Ring like patches in image simulation

Hello,I am facing an issue in image simulation for my designed IR system which is showing a circular ring like patch. I am not sure whether this is an image simulation issue or there is some actual error in the system which is being reflected in the image simulation.The design also includes binary surfaces for chromatic aberration correction.Attached is the image simulation result.Any help is highly appreciated.Regards,Supravat.

1347
Jeff.Wilde
Luminary
J
John.DommInfrared
asked in Got a question?
what is the operand for the chief ray angular coordinates for x and y

hi,I would like to know how to report the angular coordinates of the chief ray relative to the vertex of a surface.specifically, i would like to report (or know the operand) of the angular X and Y coordinates ( the X and Y in the upper left of the image below).  

3223
Erkang Wang
A
Ultraviolet
AsukuUltraviolet
asked in Got a question?
How to hide/unhide the GUI ribbon in OpticStudio?

Hello. Is there a setting in Ansys OS 25 release to set hide/unhide the GUI Ribbon? I prefer to use maximum screen area if possible.The only way I think is to double-click the tab to hide/unhide.-Asuku

432
A
Ultraviolet
Jeff.Wilde
Luminary
Jeff.WildeLuminary
asked in ZOS-API
ZOS-API Initialization Error in Matlab

It appears that there is a known ZOS-API initialization error when using OpticStudio 2025 R1.  Here’s what is stated in the 2025 R1 release notes: I’m currently using OpticStudio 2025 R1.01 and encountering this problem with Matlab R2021a (which previously worked fine with OpticStudio versions prior to 2025).Does anyone know if updating to the latest Matlab release will solve the problem?  If not, I wonder how/when this bug will be resolved?Thanks,Jeff

1525
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Ultraviolet
AsukuUltraviolet
asked in Got a question?
How to model a Angle Cleaved (APC) fiber showing output ray

Hello. I am trying to model a Angle Cleaved fiber source that emits beam. I would like to show the exit beam is offset at 4° from the optical fiber mechanical axis. How can I model this in SEQ mode?  Essentially, I want to model something like shown below in Zemax Sequential mode.PS: I am referencing this KB article to model a Angle Cleaved fiber on the receiving side. 

531
Jeff.Wilde
Luminary
mocquin
mocquinVisible
asked in ZOS-API
Dispersion Diagram in ZOS API

Can you confirm that neither setting the paramters of a dispersion diagram or reading the results is possible through the API ?I couldn’t find any settings neither extract some dataseries results

171
mocquin
theo.sieg-letessier
theo.sieg-letessierSingle Emitter
asked in Got a question?
Ideal thick lens, Optic studio sequential mode

Hi all,I am studying the limits of a metrology instrument, and specially the FT lens contribution to systematic errors. For this purpose, I simplify my system by a source, a thick lens, and a detector. I study this configuration with 3 different ways:Using jones calculus. Using Zemax optic studio sequential mode piloted with Python loops. I simulate the exact same configuration as studied with jones calculus. I have 2 models: One using a ‘paraxial’ surface type with non-null thickness. The other one using a standard surface.  However, I obtain 3 different results, and I lack the experience to identify the difference in assumptions or hypothesis between the 3 cases. Could someone help me or point me in the right direction? A lot of thanks for your time, Théo Sieg-Letessier.

280
theo.sieg-letessier
jsung
Ultraviolet
jsungUltraviolet
asked in Got a question?
How export sequential lenses with rays to CAD file

Not sure if this topic was discussed before, but I haven’t found it yet.Sometimes I need to export lenses to CAD file (STEP or X_T) including ray bundles for each object field. What is proper setting for having rays that can be viewed in program like Solidworks?For example I tried the setting below, but this STEP file didn’t display field cone rays in SW.  RegardsJS

1006
jsung
Ultraviolet
L
Luca.OggioniMonochrome
asked in ZOS-API
Error using ZOS-API in Matlab

My codes (that were working with the 2024 version) do not work anymore with the 2025 release.this is the error I get in the function “InitConnection()”:Message: Could not load file or assembly 'ZemaxEngine.dll' or one of its dependencies. The dynamic link library (DLL) initialization routine failed. (Exception from HRESULT: 0x8007045A)Source: mscorlibHelpLink: None

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