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Sean TurnerUltraviolet

posted in Got a question?

Zemax.com will be moving to Ansys.com

What does this announcement on the front page of www.zemax.com mean for this community forum and knowledgebase?I hope the forum will stay open, but in the case it gets shut down, will there be an equivalent forum on the Ansys website? Will legacy Zemax users have access without a license for an Ansys product?

62720

20 days ago

bgdi10262Infrared

asked in Got a question?

The same .zmx file results different POP results on different computers

Hi All,I would like to ask two separate questions here:I ran the same POP.zmx file on two computers that have the same version of Zemax version, 2023.R2.02. System settings and POP settings are all the same. One gives fiber coupling efficiency 72% and the other one gives 80%. What could be the reasons behind this discrepancy? I ran that POP.zmx file on one computer that has Zemax version 2024.R2.02. It’s a simple optical system using two lenses collimating and coupling laser coming out from one fiber into the other one. I have a dummy surface before the first lens to check the beam. In the Physical Optics option under Surface properties, if I turned off “Auto Resample”, it gives coupling efficiency of 93% and a 10E+04 times higher total power (while the input is 1.0). However, if I turned on “Auto Resample”, it gives coupling efficiency of 77% and a 0.99 total power (more reasonable). My questions is: why sampling affects the fiber coupling efficiency calculation and which value is mor

643

20 days ago

ajs_cSingle Emitter

asked in Got a question?

Creating pair of 90-degree off-axis parabolas (OAPs) with focus between them

I am trying to create a pair of 90-degree off-axis parabolic mirrors, oriented with the focus between them:Sketch As others have suggested, and taking inspiration from this post—Off Axis Parabolic mirror collimation | Zemax Community—I create entire parabolas and then aperture down to only the off-axis sections. However, I’m struggling to get the correct geometry. This is the layout (with apertures)Zemax attempt (w/ apertures)and without the apertures: I would like the rays to reach the second parabola and be reflected towards the image. Any obvious mistake with the geometry?

661

21 days ago

jsungInfrared

asked in Got a question?

Best way to create and optimize TIR lens in NSC mode

Hi, I’m trying to begin designing TIR lens with outer TIR surface and inner lens surface in small cylindrical hole. I guess most optical engineers understand what I mean by that. What is best approach to this in NSC. I’m thinking of three options.Use boolean combination of lenses and cylinder. I think this is illustrated in a KB article. Using freeform Z object with surface profiles parameters. Using part designer.I guess there are pros/cons of each method above. I’m more interested in 2 and 3 which I didn’t see illustrated in any KB article or training materials for OpticStudio yet. What are your thoughts and recommendations?

935

21 days ago

OlieliInfrared

asked in Got a question?

OAP Mirrors strange behavior

Hi,I’m experiencing strange behavior with an OAP mirror:On axis field - chief ray (only) is vignetted. This resolves itself when I “set vignetting” - but I still don’t understand why/how only the chief ray would be vignetted. Off axis fields do not reflect properly - the inversion doesn’t work for them somehow.Any thoughts? Thanks, EliChief ray vignetting: Off axis fields:

330

21 days ago

gardeckiSingle Emitter

asked in Got a question?

Tube with a known bend raidus

I am looking to model illumination of tube with a known inner and outer diameters having a known bend radius. The Is there a way to do this in Zemax.

130

21 days ago

Luc.van VughtInfrared

posted in Got a question?

Error in knowledgebase example

We recently recreated the knowledgebase example Modelling of a Shack-Hartmann Sensor for eye aberration evaluation using ZOSPy, and added it as an example. While doing so, we noticed an error in the knowledgebase example.The example uses a reversed eye with the object located at the retina. This model is a reversed verion of the eye model used in How to model the human eye in OpticStudio. The reversed eye however seems to have an incorrect gradient index for the crystalline lens. We have shown the specifics here, together with a convenient method to correctly invert a Gradient3 gradient use a simple fitting algorithm. In short, the error can be shown using a few plots: The original gradient of How to model the human eye in OpticStudioThe original gradient plotted as function of the z-axisFigure 1 The expected reversed gradientWhen reversing the eye model, it is expected that the reversed gradient becomes:Figure 2 The current reversed gradient of Modelling of a Shack-Hartmann Sensor for

390

21 days ago

Shaojie. ChenInfrared

asked in Got a question?

Prism exportation and shown probably in Solidworks

Hi folks,I have a question about how to export the prism CAD model. In the Zemax, I used Coordinate Break surface for the prism definition. I export .stp file, and then open it in Solidworks. I always had trouble with the prism, which does not show probably in Solidworks.Do you have any idea about how to solve it?Thanks.Shaojie

140

21 days ago

Shaojie. ChenInfrared

asked in Got a question?

Export .stp file without beam showing

Hi,I’m trying to export a .stp file that includes both optical components and beams for the opto-mechanical design. However, despite trying different settings a few times, I still haven’t been able to include the beams. The layout is shown below.Has anyone had experience with this or suggestions on how to resolve the issue?

975

21 days ago

OnurBKMonochrome

asked in Got a question?

POP vs Step file

Dear all,We are modeled a prism as step file and as pob (polygon object) and used them in ocular system. We obtained different effl values for two objects in mixed mode. What can cause this difference? Best Regards,

282

21 days ago

whit2452Monochrome

asked in Got a question?

Issue ray tracing after mirror reflection - curvature of radius fails

I am running into an issue placing lenses following a mirrored surface. Here is my design in sequential mode: Then I add K-mirror before the lens assembly in non-sequential mode: After the mirrors are added changing the curvature of radius of the lens assembly fails. The light is not reflected through the lenses and Zemax draws the lens as large circles. Any clue as to what is causing the issue?

1217

22 days ago

jiangminSingle Emitter

asked in Got a question?

Can use GENC at the surface other than image surface?

I would like to use GENC to find the GEO radius. it seems I can only get that data at the default surface-image surface. How can I get that data in other surfaces, such as the surfaces close to image surface?

201

22 days ago

Alberto.DonazzanUltraviolet

asked in Got a question?

TDE window is not restored in position upon file reopening

As per title, do you confirm the Tolerance Data Editor window does not get restored when closing and re-opening a zmx file?

555

22 days ago

dan_alon2024Single Emitter

asked in Got a question?

Car headlamps simulation

Hi,I would like to simulate a car headlamps (several types) with OpticsStudio. I need to use exists illumination models (and not write it by myself, because I don't have any access to the technical information of real headlights.How can I achieve these models?ThanksDan

633

23 days ago

jsungInfrared

asked in Got a question?

Is there way to view CIE x, y map on illuminating target in NSC?

My question is exactly as title above. Detector color gives true color map view on it with just X, Y, Z values in raw text data. But it’s more useful to have that as CIE x, y or u’ v’ data set. I know how to convert between these values using Excel, but if Zemax can generate, display that it would be a lot more convenient. Mine is 2024 R2 Preimium but I don’t see that option yet.

140

23 days ago

Alberto.DonazzanUltraviolet

posted in Got a question?

ISO Element Drawing: open issues

I'd like to point out some mandatory features which, in my humble opinion, the ISO Element drawing utility lacks. I'm probably referring to all well known issues, but still, I believe them to be of paramount relevance to be left unsolved over the years. 1) support for triplets. 2) xml file support for doublets/triplets. More on this, I report a sneaky behaviour of the current feature: if a doublet design is saved, no error is reported by OpticStudio and an empty xml file is saved instead, so that the average user can believe its manually inserted data are securely saved, but actually they are not. When opened, such xml file just reports the string 'XML output is not currently supported for doublets'. 3) drawings saving in a native vector format, such as pdf or svg. At the present time an external pdf printer sw is needed to do so, often with unpredictable results. The same request holds for every graphic output of OpticStudio (diagrams, histograms, plots,...). The cha

60116

24 days ago

Mike.JonesEn-Lightened

asked in Got a question?

What is going on in NSC Shaded Model?

Version 24.1 NSC Shaded Model hangs up big time, especially after I minimize it then restore it. No response at all to mouse or keyboard. I have to kill it and restart it.When will this bug be fixed? This is a BUG, not a feature. Please repair in an interim release.Mike

2648

24 days ago

SeanMonochrome

asked in Licensing and Installation

using red key on a new computer

I have a Zemax 16.5 SP3 with a red key. I want to use it on my new computer with Windows 11. After installing the Zemax 16.5 on the new computer and plug in the red key, there was no key information in the Zemax License Manager and I couldn’t run Zemax. The red key was light on for a couple of seconds and became light off.Could anyone please assist? Thanks!

682

24 days ago

bgdi10262Infrared

asked in Got a question?

How to create an input beam with different x and y divergence

Hi Everyone, I am struggling with creating an input beam that has different x and y divergence. The beam located at object space is elliptical and diverging very fast in one direction and slowly in the other. Is it possible to use object space NA and vignetting to realize? Thank you so much!Di

612

28 days ago

Shenwu YangSingle Emitter

asked in Got a question?

How to set the Y start order and Y stop order of grating object via API?

I got an issue when I set the parameters of grating object via API.When I set other parameters of grating object via API, the preset Y start/stop order will change to 0 automatically.And I am trying to find a function to set the Y start/stop order in API, it turns out there is only property named start order can be set.So this issue is the Y start/stop orde will be changed to 0 automatically when I am setting other parameters, and I cannot set the Y order via API.

251

28 days ago

jsungInfrared

asked in Got a question?

How to model surface scatter for Mold-tech or VDI textures

I often need to model lenses or diffuser plate with some texture grains applied on some part of it. Normally it’s called out as Mold-tech or VDI texture grain, which are commonly used for surface diffusing optical elements.The question is how do I apply that correctly in the Zemax optical model. Is there any DLL library for that or should I use Gaussian or AGg to approximate that? Problem is there is no available data to correlate such scatter model to Mold-tech definitions.

180

28 days ago

Khaled.HassanSingle Emitter

asked in Licensing and Installation

Inquiry about Zemax Pro License

I found that Zemax pro license doesn’t support “User-Defined Plugin for Surface, Objects, Sources, and Scatter Profiles”, Does this include source DLL and fiber DLL, such that this types of sources won’t be supported in the pro license?

501

28 days ago

NimMonochrome

asked in Got a question?

Error message when uploading a grid sag file

Hello, I’ve created an eye model based on real measured patient data. The anterior cornea is a measured XYZ data. The resolution of the file is 0.02 mm. When trying to upload this file to the system I’m receiving an error message as followed:AllocGridPointers: ‘newsize’<=0 I’m trying to understand why this happens and how can I fix this. Is the resolution of the file is to small? or there is something else I’m not taking into consideration? Thanks, *The dat file is attached in the ZIP folder

291

29 days ago

Benoit.BorguetInfrared

asked in Got a question?

System throughput

Hello,I was wondering whether the tools available within zemax would enable assessing the throughput of an instrument. Specifically, I can estimate the number N of photons gathered in a pixel placed at the FP of an instrument as: N = R * p**2 * pi * wave * T / (4 * F#**2 * h * c) where R is the scene radiance, p the pixel size, T the system transmission, h and c are Planck’s constant and speed of light. My assumption is that, at first order, I can simply use WFNO operand value along with the transmission factor from the transmission analysis since the latter takes into account all coatings defined as well as the vignetting defined by any aperture in the model. Or am I missing something? Thanks in advance for any insights,Regards

684

30 days ago

Mubeen Mahmood PuthiyangadiMonochrome

asked in Got a question?

Non sequential

Hi, i have a optical design simulated in non sequential. I want to convert it to blackbox but unfortunately it is not happening as there is no option to convert to blackbox. Is there any way to hide the design without using blacbox. Since am using some CAD parts its not possible to convert to sequential. In other words is there any option in non sequential where i can hide all the design information?

481

1 month ago

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