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2233 Topics

P
PersonOfInterestMonochrome
posted in Got a question?

Huygens PSF/MTF - Coherent across configs

Can you describe exactly how CWGT and WLWT are utilized when executing a coherent Huygens MTF/PSF addition across multiple Configurations (by selecting "All") for a particular wavelength?  What exactly is scaled during the calculations for (1) PSF and (2) MTF ?  Thanks,

1
Mark.Nicholson
Luminary
3 years ago
S
Sean TurnerVisible
posted in Got a question?

Edit Axis in Universal 2D Plot

How can I get more than 2 decimals to show on the Z axis? How can I show more incremental values on the X and Y axes? I've tried right clicking and going into Edit Axis Options, but that's not it. I've looked at everything in Project Preferences, nothing there seems to do it. The image in the help documentation shows 4 decimals on the Z axis, so it must be possible.   

7
Mark.Nicholson
Luminary
3 years ago
P
Patrik.KonetschnySingle Emitter
posted in Got a question?

Reduce computational effort for CAD import

Dear community, I have a question about CAD-imports in Zemax. Sometimes I need to import larger CAD-Files (approx. 70 MB; IGS format) and Zemax takes quite a while on my laptop to import this file. Also, after a successful CAD import, it takes much time to modify parameters of this import (e.g. changing from "rays ignore object: never" to "always" takes approx. 20 minutes). Is there a chance to improve this? How can I do that? It is obvious that manipulating the CAD file prior to importing into Zemax is a option (e.g. simplifying the shape by using boundary surfaces instead of the real shape), but for my case it is not applicable. Many thanks in advance! Best Patrik

2
P
3 years ago
E
Evan.GreenMonochrome
posted in Got a question?

Video playback speed

Is there any way to increase the playback speed for webinars/demos when viewed through MyZemax? Usually 1x speed is really not sufficient to grab the needed information. The ones that are posted on youtube are much nicer that way, but IMO it's a fractured jumble of videos in one forum or another, with broken links thrown in since change to MyZemax. As an educator trying to provide easy access to resources for students, this is far from ideal.

2
D
Zemax Staff
3 years ago
Matthias.rehs
Matthias.rehsSingle Emitter
posted in Got a question?

Feature Request: no more modal dialogues

Hi there, I have a feature request for upcoming OpticalStudio versions. When You work with Optical Studio with an off axis system -with ray aiming and pupil shift activated, You can get a "Cannot determine object coordinates!" - error quite easy. But what is really annoying, is the fact that this modal dialog pops up for every single analyze - window, which is trying to recalculate. Also, if you make any changes in the lens data to correct your system, every change causes another modal message. Please, please, please shift these dialog to a "non-modal" message box. Cheers /me PS.: I think I posted a similar request in the old forum back in 2010.  

2
Matthias.rehs
3 years ago
T
Taeshin.KimMonochrome
posted in Got a question?

Detector viewer in zemax macro

Dear all, I'm in problems with using zemax macro in NSQ mode. I want to: 1. open the detector viewer with the zemax macro. 2. save/export image and text data(not ray data!) of the detector viewer with the zemax macro. Could someone please help me or give some macro codes for these problems? Thanks. 

3
T
3 years ago
Sandrine Auriol
Zemax Staff
Sandrine AuriolZemax Staff
posted in Got a question?

How to model the rainbow caused by a water droplet? What is the Alternate Even/Odd Asphere?

When a ray is traced to the next optical surface (the next optical surface being a standard or an even aspheric surface), there are two solutions to the ray-surface intercept equations: OpticStudio selects the correct solution in most cases. However, in certain systems, so-called “strange” rays are actually intended to intersect the next surface at the other “alternate” solution. One of this “alternate” case is when light falls on a water droplet and makes a rainbow. Let’s see how to model this in OpticStudio. The file (that can be found in the attachments) was created by my colleague Michael Cheng. Thank you Michael! In the Lens Data Editor, the file looks like this: Light arrives on Surface 3 (in orange below) which is decentered in Y: Then light propagates through water until Surface 4 (in orange below): At Surface 4, the angle of incidence is roughly 47°. At 47°, we are getting close to the angle of total internal reflection. So part of the light is reflected, and p

1
Mark.Nicholson
Luminary
3 years ago
B
Ben.BirdseyMonochrome
posted in Got a question?

How to use a zpl macro to set the Decenter X,Y of a coordinate break surface

I have already searched for an answer in the knowledgebase, and searched the documentation. Problem: I am using coordinate breaks to generate a system with off-axis illumination. I want to step through a series of geometries using a macro to find the optimum geometry. This requires that I control the the Decenter Y of a couple of coordinate break surfaces. The command SETSURFACEPROPERTY does not appear to modify this parameter in the Lens Data using either - parameter 62 (before decenter y) - parameter 72 (after decenter y) There are no other supported commands listed for setting decenter, and no other keywords for controlling the parameters in the lens data. There are some obsolete commands such as PARM, but there is no documentation Example: inter_optic_distance = 5 beam_diameter_in = 5 FORMAT 1.12 FOR magnification, 3, 8, .5     !determine the output beam diameter based on the selected magnification     beam_diameter_o

1
Chris Normanshire
Zemax Staff
3 years ago
Cindy.Chen
Cindy.ChenInfrared
posted in Got a question?

How to create batch ZAR file quickly from zmx file in macro

Hello everyone, I am wondering if anyone know how to How to create ZAR file quickly from zmx file in the macro without refresh the glass catalog, thanks

1
Cindy.Chen
3 years ago
M
MohammadStudent
posted in Got a question?

Sequential vs Non-sequential; Which mode is more precise and reliable?

I simulated an optical system in both sequential and nonsequential modes. I used a Gaussian entrance beam for my system and then, compared the results of "Physical optics" in sequential mode and "coherent irradiance" in non-sequential mode. The problem is that the results don't coincide with each other! Now, I want to know which one is more accurate and reliable? Thanks!

1
Ian
3 years ago
D
Dfbb2012Monochrome
posted in Got a question?

PBS simulation

How to simulate a real PBS(polarization splitter prism)? i've simulate it in NSC model and coating the 2nd  prism surface as Pass_P, but  it can't comply with real result if rotate the prism. somebody can provide advise how to simulate it ?

3
D
3 years ago
A
Anonymous
posted in Got a question?

Lagrange invariant

Hello, I am trying to see if ZEMAX calculates Lagrange invariant like in OSLO, or if this is something I would need to write a macro for?   

1
Mark.Nicholson
Luminary
3 years ago
David
Luminary
DavidLuminary
posted in Got a question?

Please improve image insertion for posts

Please improve the functionality of image insertion in forum posts. I have managed to figure out how to do it much of the time, but the process of inserting an image, sizing it, and previewing the result is still clumsy and error prone. Just now, it seems to have broken for me. (Or I have fallen into some error condition.)  If I try to insert an image, the dialog I get offers me a field to input the URL for the image, but no facility for browsing for an image on my computer. In years of forum posts, I have NEVER wanted to post an image I found at some URL. The images are always on my computer, and usually some image generated within OpticStudio. Posting images is a really good way to communicate. Making that process easier would enhance the forum experience and increase participation. Kind regards, David

4
David
Luminary
3 years ago
J
JonaszMonochrome
asked in Got a question?

Elliptical mirror in non-sequential mode, standard surface or similar

I am using a Standard Surface to model a concave mirror in non-sequential mode. The curvature of the mirror is defined with the Radius parameter. To correct for aberrations I want to use two different radii, one along X and one along Y. Which object should I use for this purpose?

2
J
3 years ago
M
Mark.Gokhler Ph. DMonochrome
posted in People & Pointers

The optical design of the compact wide FOV camera.

Dear All, I want to present the optical design of the compact wide FOV camera. Optics of the camera includes three aspherical plastic lenses and a single spherical glass lens. The design includes thermal, ghost image, and tolerance analyses. The design is shown in the article located on the following webpage: http://www.mark-electro-optics.com/id19.html. Sincerely, Mark Gokhler, Ph. D.

1
Mark.Nicholson
Luminary
3 years ago
M
Mark.Gokhler Ph. DMonochrome
posted in People & Pointers

Course: "Design Imaging Systems in Visual Range using ZEMAX".

Dear All, I provide the course "Design Imaging Systems in Visual Range using ZEMAX". The course is based on the reading of specific chapters from different references and practical lessons completed under my instructions. You are welcome to visit my website to see the syllabus of the course. You will find there also the agreement that explains how the course is provided. You can learn the course at any convenient time for you. Sincerely, Mark Gokhler, Ph.D. E-mail: info@mark-electro-optics.com. My website: http://www.mark-electro-optics.com.

0
M
3 years ago
Mark.Nicholson
Luminary
Mark.NicholsonLuminary
posted in People & Pointers

Mark has retired from Zemax

Dear Zemax users, I just wanted to let you know that I have retired from Zemax. I now have the title Emeritus CEO, and I'll continue to be active here. Swaminathan Subbiah (he goes by Subbiah) is the new CEO and I am sure he will do a great job. I also wanted to say thank you to you all for your friendship, as well as custom, over the years. My personal email is markgnicholson (at) gmail.com, and it would be great if we could keep in touch. Oh, and we have some seriously cool stuff coming out next year, but I shall let others talk about that :-)  - Mark

4
Mark.Nicholson
Luminary
3 years ago
Julia
Zemax Staff
JuliaZemax Staff
posted in Got a question?

Python installation troubleshooting

I follow steps mentioned in the KB article : Getting started with Python to install Python and do configuration to use ZOS-API with Python. But I still cannot make it work. I did:   Install 64 bit Python 3.7.4 under C:\ directory  (according to recommendation)  Configure Windows PATH environment   Install and upgrade pip   Install corresponding pywin32 module   Follow instructions under Troubleshooting python section to re-registering the wrappers  Navigate to {Python}\Lib\site-packages\win32com\gen_py\*.* and delete all the filed in that (gen_py) directory. Open a Windows "cmd” window (Windows Key + R -> type “cmd” -> press “Enter”) Change directory to your {PythonEnv}\Lib\site-packages\wind32com\client\ folder (i.e., “cd C:\Python37\Lib\site-packages\win32com\client”) Type “python makepy.py” and press enter.  When the Select Library window pops up, use the Ctrl ke

1
Julia
Zemax Staff
3 years ago
T
Taeshin.KimMonochrome
asked in Got a question?

User-defined apodization

Hi.  I would like to manipulate the apodization type. But I know, zemax supports only 3 types of the apodization type(uniform, gaussian, and cosine cubed). In the manual, zemax suggests using the user-defined surface. But I cannot convince that the suggested method can change the density of the rays over the entrance pupil. Because I cannot find examples of this. Gaussian apodization(>0) gives the center-enhanced ray density like a mountain.  Then, is there any method to make the ray distribution which has two peaks like the double back of a camel? And, If I find the method to make this special ray distribution, is it possible that it is switched as an NSQ source? Thank you for reading.

3
Mark.Nicholson
Luminary
3 years ago
W
Widodo.PutroSingle Emitter
asked in Got a question?

Why the total electric field amplitude change as mirror angle change? Polarization perspective

Dear Zemax users, I want to evaluate the polarization direction of a beam after some optical setup. What I usually did, is to quadratically sum (QSUM) the real and imaginary part of the Electric field from NSRA operand. Therefore I have Amplitude Ax, Ay and Az, which I simply take as the polarization direction. As control, I evaluate as well the total amplitude by, again, quadratically sum Ax, Ay and Az; with the Power field of the source set to 1 Watt, it always sum to one (1) or less. I assume, value less than 1 mean some of them are absorbed by the mirror etc since the reflectivity is less than 1. This assumption should be correct, shouldn't it? However something bugs me now... In the attachment, I have set a Source Ray polarization to Jx = 1, Jy = 0. So it's linearly polarized. There are two mirrors, and I made two configurations with different angle placement of the mirror. After being reflected twice, I compare the result in the last segme

1
W
3 years ago
Michael Cheng
Zemax Staff
Michael ChengZemax Staff
posted in Got a question?

Why does phase of reflected electric field shifted by a pi compared to my calculation

For example, you can open the following built-in sample. \Documents\Zemax\Samples\Sequential\Tilted systems & prisms\Prism using total internal reflection.zmx If you check the "Phase vs. Angle", you can see the phase delay introduced to S and P polarization.  And if you check in Wiki page, you can find the phase delay for P polarization has a shift of pi compared to the result in OpticStudio. https://en.wikipedia.org/wiki/Total_internal_reflection#Phase_shifts Why is shift happen?

1
Michael Cheng
Zemax Staff
3 years ago
K
Kathleen.AscrizziSingle Emitter
asked in Got a question?

Split NSC Rays in Non-sequential mode

I read in the "Exploring Non-sequential Mode in OpticStudio" tutorial that I need to select "Split NSC Rays" in order to see the effect of a beamsplitter in my design.However, checking the "Split NSC Rays" causes rays to split in other pieces of my design, including a plano-convex lens that I downloaded from the "How to create a simple non-sequential system" tutorial. Is my lens actually splitting the light, or is this just a side effect of clicking "Split NSC Rays?" See attached pictures.

2
Ian
3 years ago
K
Kathleen.AscrizziSingle Emitter
asked in Got a question?

Measure focal length of a lens

I am using a Zemax model of an Edmund Optics lens in my design. The lens has a focal point of 10mm at 587.6nm, but my instrument will use a 650nm laser. Is there a tool in Zemax that calculates the focal length of a lens, with consideration of wavelength? Alternatively, I would appreciate guidance on how to calculate this by hand. The best I have been able to do so far is eyeball the location where the light converges and measure that distance (which appears so be about 12.3 mm).

2
Ian
3 years ago
H
Zemax Staff
Heng.LiZemax Staff
asked in Got a question?

Where can I find information about High Yield Optimization?

It sounds like a cool idea, but where can I find the detailed information? 

11
Alissa Wilczynski
Zemax Staff
3 years ago

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