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Haokun.YeVisible

asked in Got a question?

POP vs. BSP vs. BRP

What are the advantages of ZEMAX's POP compared to CodeV's BSP beam propagation and FFT(BRP) beam propagation? According to technical documents, POP decomposes the incident beam into plane waves. Does this lose part of the information? Comparing OpticsStudio and CodeV, I think POP and FFT beam propagation are very similar. Do you know BSP? Under what conditions should I choose?

jacob.begis@centauricorp.comMonochrome

posted in Got a question?

Aborting a Computation

Hello,  I have an issue where if I open up a file, Zemax will run all the analysis that I previously had open. Usually, this is not an issue, but sometimes I might have something time intensive open, such as Physical Optics Propagators. I know that I can set auto-analysis off, but If I open I file up, where this is not already set, all I can do it wait.  Is there a hot key that aborts all current analysis ? Hitting Terminate on it does not work in the case of just opening up the program.  Thanks 

An.ChansuSingle Emitter

asked in Got a question?

Analysis of plastic material according to temperature (within the range of -40 to 80 degrees)

Hi, i have some questions.   From what I understand, it is possible to analyze the absolute refractive index as a function of temperature if a thermal dispersion coefficient is provided. For plastic materials and in the range of -40 to 80 degrees, is the simulation accurate when all of the thermal dispersion coefficient is provided ? And for some plastic materials, it is confirmed that only one thermal dispersion coefficient(D0) is provided. I wonder if it would be accurate to simulate with this material within the same temperature range as above.   Thanks for reading my Post.

Sasha.SypkensStudent

asked in Got a question?

surface not showing on shaded model but does show on layout view

Hello, I am trying to model an on-axis reflector telescope with two mirrors.  The second mirror surface shows in the 2D layout window but does not show in the shaded model.  Why the discrepency and how do I fix it?  I am not sure if the reason why the second surface does not show is because after the second surface, the rays go through the first surface (but I haven't figured out how to make a hole in it, yet, so realistically nothing would go through, yet).

Önder.SönmezFully Spectral

asked in Got a question?

Hello Everyone, I have a system with a series of lens to optimize. The above picture shows the last portion of the lens system. (The last lens is an even aspherical surface) Above picture shows my abberations. I want to improve my system by reducing distortion aberration. Can you make comment on this case? What are your suggestions to reduce distortion aberration?   Best wishes. Önder.

Nero.KwokSingle Emitter

posted in Got a question?

Fibre coupled laser diode

Hi guys, I am new in Opticstudio and I am going to design a fibre-coupled laser diode with fibre core is 4+/-0.4um,NA is 0.13,center wavelength is 635nm. How do these parameters help me to create the light source.

Fatemeh.Jessen-HansenInfrared

asked in Got a question?

GEO radius and enclosed energy for fiber size coupling

Hi, I have a question on the relation between GEO radius in spot diagram and radius for enclosed energy. I would like to couple a fiber to my beam and would like to understand the size of the fiber to choose and its acceptance angle. If I look at the 86% enclosed energy, using Huygens PSF, it is about 17um radius. Therefore I thought the MFD is 2x17um=34um which sets the limit of roughly 30um on the fiber core size. However, if I look at the spot diagram the GEO radius is about 1mm. Meaning, I need 2mm fiber size to cover all the beam to my understanding. This is far above 30um size which made me very confuse. I checked geometrical image analysis. For 1.5mm image size, 97% of the total power included. For 34um image size, the efficiency is only 2%. Also when I look at the Fiber coupling option of MMF, the coupling efficiency is max 1.6%. I am not sure what fiber size it assumes to calculate the fiber coupling efficiency as I only selected 0.5 NA as the input. Also there is no differenc

Önder.SönmezFully Spectral

asked in Got a question?

Design Templates in initial form

Hello everyone, In Libraries --> design templates and selecting a design among the library, after changing and saving the file would the original layout be changed? I want to make sure about the Design templates original format isn't changed by my mistake.   If so, how can I go back to the original file layout?   Thanks in advance, any help is appreciated. Önder.  

David.RauchSingle Emitter

asked in Got a question?

Opening Osram LED

Hello Zemax community. I am new to Zemax, so please forigve me any obvious mistakes. I want to import a Osram LED as source for non-sequential mode. I downloaded the ray files here:https://www.osram.com/apps/downloadcenter/?path=%2Fos-files%2FOptical+Simulation%2FLED/OSLON/OSLON%20SSL/OSLON%20SSL%2080/GD%20CS8PM1.14 Then I follows these instructions:https://support.zemax.com/hc/en-us/articles/1500005486661-How-to-use-Osram-LED-data-with-OpticStudio Following the instructions, I put the rayfiles 'rayfile_*_Zemax.DAT' into 'Sources\Source Files', the spectrum file '.spcd' into 'Sources\Spectrum Files' and the STEP file into 'CAD Files'. Now when I open the '.ZMX' file (with 'File...Open' from an arbitrary location), the source file and the CAD file get loaded into the component editor, but I get the error messages 'Can't open File C:\...\GD_CS8PM1_14_20170327_spectrum.spcd!', 'Invalid source color definition for source object 1 surface 1.' and I can also see in the NSC 3D Layout that

Brian.CatanzaroFully Spectral

asked in Got a question?

Simulating Imaging a transparent object (cells, etched surface, ...)

When I encounter a transparent object that I need to view with a microscope, I often use dark field.  This is a 'DC stop' that blocks like coming directly back from the object and only allows rays of NA > 0 to pass.  It highlights the edges of a transparent (phase) object. I want to perform a similar image simulation using OpticStudio. I cannot find any ready-to-use analyses for phase objects.  Is there a geometric Image Analysis that allows the object to be phase rather than an absorbing object? Seems that I can do a simple simulation 'by hand' by using the MTF from an obscured optical system or the PSF from the same and convolving that with the object.

Moohilton.SoosaippillaiMonochrome

asked in Got a question?

Angle of Ray Hits

Hi all, I currently have a hemisphere CAD model as a light source in Zemax. I would like to see the angular spread of the light source. I have tried using the polar detector and surface detector to get some type of angular sensitivity, but that does not seem to work. Thank you for your time, Mo

Andreas.KamradSingle Emitter

posted in Got a question?

Modelling a glass tube/pipe in sequential mode

Hallo everyone, I am struggling with modelling a glass pipe of a certain radius and with a given wall thickness in sequential mode. I have tried two biconic surfaces and applied surface apertures, but I get strange results in the upper and lower part of the pipe. I am quiet sure, it should be a common application to look inside a glass tube or calculating the EFL of this tube. Can anyone give me a hint how to cope with this problem or what sequential element is appropriate?

Jonathan.TigheMonochrome

asked in Got a question?

Loss of engery when ray tracing with polarization

When modelling a non-sequential system  depending on whether I tick the 'Use Polarisation' in ray trace, I get 90 or 62 percent  output. In the display I cannot see any significant diversion of rays (yes I am ticking and unticking the use polarisation button in the settings of NSC model) . How can I see where the 28% energy is being lost. It is UV light with mostly fused silica components. The source is a IESNA file with angular variation.

Pouyan.RezapoorMonochrome

posted in Got a question?

Lens material in Terahertz spectral range

Hello, I need to have a telecentric lens at terahertz spectral range (wavelength of 500 to 900 um). According to the documentations, the best material in this range is ZEONEX E48R. However, in ZEMAX, in the catalogue of E48R (and the whole ZEON.AGF catalogue materials) the maximum available wavelength is 1.6um. It is strange to me, since I have seen in numerous documentations that this specific material is used in ZEMAX in terahertz spectral ranges. I have two questions in this regard: Am I looking at the wrong catalogue or do I need to download or update this catalogue myself? If that, where should I find the related data or documentation for it? Also is there some other material that I could use instead of ZEONEX E48R that is supportive of terahertz spectral range? How can I find its related parameters to add for ZEMAX catalogues? Thanks a lot in advance for your time.

Lucia.Suarez andresSingle Emitter

posted in Got a question?

Problem with CAD files

Hi, Since the last update we cannot access CAD/STP files in our designs. We get the following error: Files are in the mentioned folder. Opticstudio file worked perfectly before the update. Do you have a solution? This is causing delays in our project. Cheers, Lucía Suárez

Xiaohui.ChangMonochrome

asked in Got a question?

Modeling Gold Nanorods Solution as lens in Zemax

Hi! I have a question about modeling a gold nanorods solution. This solution has a  Molarity of 2.5 (nM) and a Molar extinction coefficient of 9.68*10^8 (M^(-1)cm^(-1)). The optical path is around 6.33 mm. I am modeling in non-sequential mode. Following the guide on this post: https://my.zemax.com/en-US/Knowledge-Base/kb-article/?ka=KA-01525, I tried to modify the material water within Zemax by changing the transmission. The transmitted intensity is given by Beer's Law and is roughly 0.2. However, when I changed the transmission from 1 to 0.2 at the wavelength of 808 nm, the detected intensity does not change compared to the default water. Can anyone help with this issue? Should I change anything other settings to model the gold nanorods solution? Thank you so much!  

fanwenSingle Emitter

posted in Got a question?

why does each surface have 3 beamfiles after POP calculation?

why does each surface have 3 beamfiles after POP calculation? They seem to have same irrandiance display in beam file viewer but have different phase distribution.  

Andrey.KuznetsovInfrared

asked in Got a question?

Strange Non-Uniformity from Array of LED Light Sources

I am having a strange issue with a 4x4 array of LEDs using Cree XP-E2 source file placed inside a square mirror tunnel with LEDs on one end and detector on the other. The issue is that there is a slight gradient on the detector and I can't figure out where it's coming from. ZAR attached.

Michael ChengZemax Staff

posted in Got a question?

About changing Preferences setting in ZOS-API

Here are some notes for references if you are trying to change the preferences settings in ZOS-API! The ZOSAPI.IZOSAPI_Connection.PreferencesFile only works in standalone mode and not in other 3 modes. When you didn't specify a PreferenceFile (or when the given path is wrong), all settings in the preferences cannot be changed by API. In other words, only in standalone mode, you can change preferences settings. The only way to read a second preferencesFile is to close the current IZOSAPI_Application, change the path, and reconstruct the IZOSAPI_Application. In other words, I cannot read a new PreferenceFile in real time when I’m opening a file via ZOS-API in the standalone application mode. Best regards, Michael

Dmitriy.MarasanovStudent

asked in Got a question?

light collection efficiency

Hello! help please, how to calculate the light collection efficiency of the lens?

Jeeyoung.LeeMonochrome

asked in Got a question?

Display reference sphere on a layout plot

Hi all. I want to display reference sphere on a layout plot. Is it possible?  Then, could you tell me how can I do this?  Thanks in advance

Abhishek.TiwariSingle Emitter

posted in Got a question?

Detection of collimating beam in angle space NSQ

Hi support team, We have a little problem, We have taken a point source in object space, collimating it with simple optics and trying to simulate an image using slide, in image space with detector rectangle. But the image in 'Image space' is visible in positon space, while in angle space it is only one DOT every time. What we have observed that for collimating beam the detector always shows a DOT in NSQ. Is there any specific setting/technique to observe the image in angle space, at the detector for collimating beams. Please find some images for description. Thanks in advance. Abhishek

Kaia.WilliamsMonochrome

asked in Got a question?

Maximum Number of NSC Editor objects

Is there a maximum number of objects that can be added to the Non-Sequential Component Editor? I'm looking to programatically add an extremely large number of objects to the editor (>2500) using ZOS-API. The vast majority of these objects (~2100) will be arrays referencing another object or objects, and as such will not take up as much memory. Thanks!

RyanMonochrome

asked in Got a question?

Simulating the spot size of a focused fiber output

I'm working on a system where a beam is launched from a multi-mode fibre (having a certain core diameter and NA), goes through a series of lenses, and is then focused on the image surface. What would be the best way to simulate such a source in sequential mode? What would be the best way to find the resultant spot size on the image surface?

Önder.SönmezFully Spectral

asked in Got a question?

Hello everyone, I want to see the stop as a usual form but I can not for the time being. The stop is highlighted as big orange circle on the picture below. I simply want to limit the light entering through stop; however, this filtering out function doesn't seem below, also the mechanical appearance of the aperture is somewhat unexpected to me. any help on clarifying this is appreciated,

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