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BerkeSingle Emitter

asked in Got a question?

Optimizing Computational Efficiency in the Design of Continuous Zoom, Multi-Wavelength Optical Systems

Hello,When designing a continuous zoom, multi-wavelength system, I encounter a significant computational power challenge. To address this issue, I convert clear semi-diameters rather than their maximum values to automatic semi-diameters (optimizing for maximum diameter increases the optimization time by 2-3 times). Then comes the tricky part: I lack information on each surface's maximum diameter. In some cases, such as wider angles, the diameter of the lenses decreases while they approach closer positions according to zoom settings. Converting these lenses to their maximum values leads to unrealistic positions for the mechanical structure.To overcome this hurdle, I consistently utilize DMLT or ETGT comments for 15-20 configuration systems. Interestingly, when optimizing the same system with other software, they automatically convert every diameter to its maximum without affecting computational power.Do you have a proper way to solve this problem?

26010

5 months ago

AsukuVisible

asked in Got a question?

Thickness: Pickup or Position options not found ?

Hello all: [1] I was trying do conduct some sensitivity analysis and wanted to apply a Thickness: Pickup solve on surf-8. I have done this many times before, where I choose Pickup solve for thickness for a surface. However, I don’t seem to see that option anymore at all in 2024 R1.02.Has something changed since the last few updates? [2] Also, Surf-6 is denoted by ‘P’ - Pickup solve - but the drop down menu shows it as a ‘F’ solve but with Pickup properties as one would expect. So I believe this is a bug.

1572

5 months ago

yuan.chenZemax Staff

posted in Got a question?

How to set the desired surface efficiently

There are two different approaches to do this. Take Radial Grating as example. Click the tab at the right position of standard surface. And then pressed R instead of clicking the standard surface column directly. Select the surface and click directly and then enter the name you want to search. In our case, it starts with r. This method provides a way to search the surface with certain letter inside the surface name.

450

5 months ago

eadsrSingle Emitter

asked in Got a question?

How to model Calcium Fluoride (CaF2) accurately in Zemax

In the UV, CaF2 begins to exhibit small amounts of intrinsic birefringence, which are non-negligible. In Code V there is a very simple way to set up a CaF2 crystal where a crystalline axis is simply established. When a retardance map is calculated for light refracted by such a CaF2 lens, birefringence shows up as “three-point” across the pupil if the light is diverging or converging through a CaF2 crystal with 111 orientation (see https://www.tf.uni-kiel.de/matwis/amat/elmat_en/kap_6/advanced/t6_6_1.html for more details). Or it can show up as a “cross” if the orientation is 001.First of all, I’m not seeing CaF2 as a Birefringent In/Out material option. I understand I would need to define this in the Birefringent catalog. Second, I need to be able to vary the retardance magnitude and orientation depending on the crystal axis orientation and direction of propagation through the crystal. Any thoughts or suggestions?

3356

6 months ago

Mark.NicholsonLuminary

asked in Got a question?

What is the Zemax New Portal...and why does it need access to my email?

Hey Zemax team,When I went to zemax.com today I got this cheery message:What is this app, what is Zemax New Portal, what is my Zemax tenant and why does it need access to my email?Mark

2626

6 months ago

JamesInfrared

asked in Got a question?

Testplating / Optimization Stall (05/13)

Hi All:I am testplating a zoom lens. As part of the process after optimization, I would “Fix” both infinite radius surfaces, as well as the base radius of any a spheres. In this case the error function is about ~ERF=0.4966. However, when starting the testplating operation, note that the dialogue box recognizes the prior error function of ~ 0.496, but then estimates an ERF of ~9 Billion, and then Zemax stalls completely

681

6 months ago

Aleksandr.MakarovUltraviolet

asked in Got a question?

nanotextured AR with Zemax?

can such AR added to Zemax ? for broad range of angles/waves/lens radius?https://www.laserfocusworld.com/optics/article/16546961/laser-optics-antireflection-nanotextures-for-laser-optics-go-commercial

270

6 months ago

Kevin ScalesEn-Lightened

posted in Got a question?

Missing Parameter Solves in OpticStudio 2024 R1.02

A bug has been identified in the most recent release of OpticStudio, which is causing multiple parameter-solves to be missing from the drop-down menu in many sequential parameters. However, the solves are still accessible. The issue is not in the functionality but rather in the user interface. Temporary Resolution A Users familiar with ZPL macros can easily write a macro using the SOLVETYPE and UPDATE keywords to insert a solve in the desired location. Existing solves can still be modified, and files that are read in with existing solves will keep them. So the macro can create a solve and populate it with values that may then be modified as needed. For users unfamiliar with ZPL programming, a simple macro with descriptions in the body of the macro describing how to populate the arguments is attached here. There are only two lines of code, so it should be accessible to most users. It is named InsertSolve.ZPL in the attachment.Temporary Resolution B A sample file has been prepared with e

3764

6 months ago

aconn34Single Emitter

asked in Got a question?

Graded Index Multimode fiber

Hello all,I’m trying to model a multimode fiber with graded index in OpticStudio. I have a known fiber NA of 0.29 and the gradient change across the core can be assumed as parabolic. Then, after the GRIN fiber is properly modeled, I would like to shape the fiber tip into various lenses. Since these are formed by shaping the fiber core, this would also be GRIN.What additional information do I need to model this fiber? What assumptions can be made? Any advice is greatly appreciated!

890

6 months ago

yuan.chenZemax Staff

posted in Got a question?

Seidel diagram and values in merit function operand

Quote from help file: The Analyze Tab (sequential ui mode) » Image Quality Group » Aberrations (Image Quality Group) » Seidel CoefficientsOpticStudio will compute the unconverted Seidel, transverse, longitudinal, and some wavefront coefficients. The Seidel coefficients are listed surface by surface, as well as a sum for the entire system. The coefficients listed are for spherical aberration (SPHA, S1), coma (COMA, S2), astigmatism (ASTI, S3), field curvature (FCUR, S4), distortion (DIST, S5), longitudinal color (CLA, CL), and transverse color (CTR, CT).The values displayed in the seidel diagram are the coefficients, and the values in merit function operands are in waves. Both values can be found in the seidel coefficients analysis feature. The units are always the same as the system lens units, except for the coefficients measured in waves. When converting the coefficients in lens unit to the wavefront aberrations in waves, we need to use the below conversion. (Note W220P is the Petzva

3537

6 months ago

yuan.chenZemax Staff

posted in Got a question?

How to save all tolerancing data: MonteCarlo, Sensitivity and Summary in ZOSAPI

The summary is in the text file. The way to save text files from the API is to use the “Output to File” entry that lives in the Classic tab of the Tolerancing tool in the OS GUI. This will save the tolerancing output by the name specified in the same folder that the system is in (be sure to include .TXT to the end). The corresponding API code for this is below:tol.OutputFile = "OutputName.TXT"To store the MonteCarlo and sensitivity data, we need to use the tolerance data viewer to open the saved ztd file and then store the dataset.In order to save the .ZTD files from the ZOS-API, you will need to use the SaveTolDataFile property, and you may set the filename via TolDataFile under ZOSAPI.Tools.Tolerancing.ITolerancing Interface Reference:tol.SaveTolDataFile = Truetol.TolDataFile = "myFile.ztd"Then, once the tolerancing is done, from the Tolerance Data Viewer, you may read the created .ZTD files, by defining the file name and then running the tool. The corresponding python code is as fol

1420

6 months ago

matthewSingle Emitter

asked in Got a question?

What is the reference sphere for a system with an off-axis field?

Hello! I just wanted to ask, what exactly is the reference wavefront that OpticStudio uses when computing the wavefront error of a system with an off-axis field? I’ve read several posts talking about the reference wavefront, and to my understanding, the reference wavefront for an off-axis field is a sphere with a center that lies on the chief ray, and the sphere intersects the optical axis at the exit pupil plane.I’ve read that the radius of the reference sphere is equal to the distance between the focal plane (image plane) and the exit pupil plane (this number is given by the exit pupil position in Prescription Data, multiplied by -1). However, for off-axis fields, I don’t think this is the case. I think the radius for the reference sphere is the distance between where the chief ray intersects the exit pupil plane and where the chief ray intersects the focal plane. This distance would be larger than the exit pupil position. For example, I have an image below which illustrates where th

1102

6 months ago

Aleksandr.MakarovUltraviolet

asked in Got a question?

Enclosed energy multiple waves or fields

is here way get separated curves on same plot for different waves with “geo Encircled Energy”?opening n wave * x +y orientation looks ugly. is here better way?

511

6 months ago

John.DommInfrared

asked in Got a question?

tolerancing an aperture value that is in the system explorer window

HiI would like to tolerance the aperture value using the tolerance data editor. I heard you can use TCON. How do I do that?

611

6 months ago

Jeff.KuhnSingle Emitter

posted in Got a question?

absorptive and scattering surfaces in NSC

ABg scattering seems to describe only scattered rays on "reflective" surfaces in zemax non-sequential mode. Is there an easy way to model a surface that scatters only a fraction of the incident radiation. Any ABg model I apply to a surface seems to include a large specular component I can't seem to control.  

14477

6 months ago

Alan.HoskinsMonochrome

asked in Got a question?

Why do I lose power reflecting off mirrors with nsc tracing and the "use polarization" flag?

I feel like I should know the answer, but for the life of me I cannot make sense of it. If I create a very simple NSC model consisting of a 1 Watt source reflecting at normal incidence off a flat mirror and then absorbed a by a detector also at normal incidence, the power absorbed by the detector will vary whether I have “Use Polarization” checked or not. With use polarization, the power is ~0.946 Watts, without it is 1.0 Watts.What gives?I am running an older version of Optics Studio but can upgrade (22.1.2).

894

6 months ago

Ruxandra-Marina.FloreaSingle Emitter

asked in Got a question?

Converting black box lens model to non-sequential version

Hello, I'm using the following knowledge base article to convert a lens design file (sequential) into it's non-sequential alternative: https://customers.zemax.com/os/resources/learn/knowledgebase/how-to-convert-sequential-surfaces-to-non-sequenti Does it also work on black box models? Thank you in advance!  

135427

6 months ago

pengcshaoMonochrome

asked in Got a question?

Etched multi-mode fiber cladding

hey,i would like to create a ‘dent’-like feature on cladding of a multi-mode fiber to leak light out, but my setting like the following with an object of ‘air’ as material does not work. How can we I achieve this?

652

6 months ago

ThanigaInfrared

asked in Got a question?

Gaussian beam size at various location of the model eye

Hi All,I am currently working on simulating the Gaussian spot size at various locations within the eye model, such as the cornea, lens, and retina. I have attempted this using both paraxial Gaussian beam analysis and Physical Optics Propagation (POP); however, the calculated values do not align with my theoretical expectations. According to theory, I expect the spot size to be approximately 44 microns at the lens, around 90 microns at the cornea, and roughly 280 microns at the retina. My source has 840nm wavelength. I attached my Zemax file for your reference . Could you please assist me in accurately simulating the Gaussian beam in Zemax to achieve the desired values? Thank you in advance. Regards,Thanigachalam P

13813

6 months ago

CJ27Student

asked in Got a question?

Import CAD object - STEP vs STL format

Hello there friends from Zemax, I am trying to import a freeform surface which I externally generate with some custom numerical routine.Since I am interested in performing a non-sequential ray tracing analysis of of my system, I export my surface as a CAD object.I have observed that there are differences in the obtained results depending on which CAD format I use. At the moment I just tested the STL and the STEP fileformats. My system looks something like this: In this case, I have a point source at the origin. The element right on top of the source is a TIR structure. The surface on the right side is just an aspheric surface which I directly transform from the sequential mode into the non-sequential mode. Finally, the rays are focused towards the focal plane in where I have positioned a small detector to evaluate the intensity at the focal plane. In between both lens elements, I have included a rectangle detector to also evaluate the irradiance. The issue that I am having is related

611

6 months ago

Harvey.SpencerMonochrome

asked in Got a question?

How to set parameters in configurations to variable or fixed in ZPL

I cannot for the life of me in the retarded ZEMAX figure out how to do this. I have 6 CONFIGURATIONS. I want to set THIC on surface to beVariable in configs 1,2,3,and 6. FIXED in 4 and 5.FORM THE MANUAL:Syntax:SETVAR surf, code, status, objectorSETVAR config, M, status, operand So I would use the second version of SETVAR because the “M” says it is for multiple configurations.So where is the surface number in the command?Where is the “T” entered for thickness Thanks.

1192

6 months ago

Harvey.SpencerMonochrome

asked in Got a question?

Creating input beam for POP

I would like to input into an imager a plano beam that simulates irradiance from a scene at infinity to do some analysis in POP. So the beam is collimated and in this case fills the imager entrance pupil of 120mm. It can be monochromatic. The beam should have a top hat irradiance profile. The FOV is 4.0 x 7.4 deg full FOV. I don’t believe that I want a guassian with a waist, divergence, etc. Any suggestions? Harvey

230

6 months ago

Susan.LindecrantzInfrared

asked in Got a question?

get data from geometric image analyze in a macro

Im want to retrieve data for specific pixel from the geometric image analyze tool in a zemax macro. How do i do that?

551

6 months ago

yuan.chenZemax Staff

posted in Got a question?

FAQ of material and refractive index in Zemax OpticStudio

There is a learning path that offers some useful guidance of material setup and algorithms of refractive index calculation. Materials – Knowledgebase (zemax.com)[How to return the index of refraction at a specific wavelength]There is a KBA that shows how to do it: How to return the index of refraction at a specific wavelength – Knowledgebase (zemax.com)An alternative way is to use 1-D Universal plot using the INDX operand. Basically, we can sweep the Wavelength 1 value, then calculating the INDX operand value for Wave 1 on Surface 1. This will create a plot with the specified number of steps. [How can I optimize the glass in sequential mode]Glass substitution, this method is suitable for the case that we need to consider materials that have special properties, for example, glasses suitable for molding or durable at extreme environmental conditions. See more details in this KBA:How to use glass substitution to optimize the glasses in your optical design – Knowledgebase (zemax.com)Model

1320

6 months ago

Takashi MatsumotoFully Spectral

posted in Got a question?

How to change refractive index of NSC objects in multi configuration editor.

When you want to change refractive index in multi configuration, you can use MIND operand for sequential mode surfaces. However OpticStudio doesn't have those operand for Non-sequential mode objects. How can you change refractive index for NSC objects in mulit configuration editor?   You can use NPRO operand. Please see the help file as below. Gradient index in this help file means these paramaters in object property.   So you can set every parameters in the tab via NPRO operand. For example if you choose GRIN1.dll , the correspondence between the code number and the parameter is as below. When you set value only 201 paramater, you can set isolate matrial as below.   Especially, if you chosse grin6.dll or grin9.dll, you can consider chromatic dispersion. Please read help file and refer the sample file.  

4362

6 months ago

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