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2882 Topics
jsung
jsungVisible
asked in Got a question?
Freeform Z object doesn't work for Boolean native?

I tried to do Boolean subtraction with Freeform Z object and cylinder volume in order to drill a cylindrical hole through the Freeform Z lens. But Zemax won’t make that boolean subtraction as I wanted.Is this bug or did I miss something here?

679
jsung
17 days ago
N
Fully Spectral
nadav.amitaiFully Spectral
asked in Got a question?
Radial grating to binary grating

Hi all, Is there a fast way to make binary grating from radial grating?Some thing like that:Into:  EDIT:Well I succeed to make a digital function. How I write it in dll. file?Thanks in advance,Nadav

370
N
Fully Spectral
19 days ago
Leon
LeonInfrared
asked in Got a question?
Question about Source Diode

I create a Source Diode file with eliptical ratio of 3 and 0 astigmatism, evergthing including the source sizes are as expected, no problems here, see the raytracing at the left side below. But after I type in a tiny astigmatism of 0.001 (keep everything else untouched), the source size shrinks a lot. What is happening? 

412
Leon
21 days ago
I
Indy.MagnusMonochrome
asked in Got a question?
Quantum Yield simulation and definition

Dear all,I have a question regarding the Quantum Yield when used in the Phosphors and Fluorescence Volume Physics section in the non-sequential mode.I have a simple setup in Zemax (file in attachment) where I want to replicate a fluorescence quantum yield measurement. It consists of a collimated monochromatic excitation source, a rectangular volume with the volume physics set, and a polar detector capturing all the scattered and fluorescent light. The absorption spectrum is flat at the excitation wavelength (550 nm), the emission spectrum is an arbitrary curve around 600-700 nm, and the quantum yield spectrum is a single value of 1. I have chosen the extinction coefficient such that around 60% of the light is absorbed/re-emitted and the rest is transmitted normally.With this setup, I would have expected that no light would be lost. However, looking at the total power captured by the polar detector, only 93% of the light remains. Looking at the flux vs wavelength plots shows that we hav

270
I
23 days ago
Rick Vleugels
Rick VleugelsInfrared
asked in Got a question?
Freeform cylindrical lens

Hello,I am designing some systems using cylindrical lenses and I am exploring the possibility of using freeform lenses, but I don’t have a lot of experience on this. I know there are some surfaces for this available in OpticStudio, but which one can be best used for cylindrical freeform lenses, such that there is only optical power in one direction?Also, what is generally a good way for such a design? First optimize a standard system and from there introduce some freeform variables? Or directly go to the freeform variables?Thanks in advance!

702
Rick Vleugels
23 days ago
R
Renaud.LigotInfrared
posted in Got a question?
ISO drawing edge thickness

Hi In addition to my previous post (“units in the new ISO element drawing”) I would like to point out that the edge thickness annotation that has been added to the ISO drawing in the last update Zemax OS is not always correctly calculated! See example below where the edge thickness is clearly not the sum of the central thickness and the sag of the surfaces (by the way, the SAG are also not correct) . Moreover the number of decimals is a bit exaggerated in my opinion.I think having edge thickness and total thickness of the lens indicated is a real plus (if correctly calculated 😏) but then it would be interesting to be able adding the tolerance on those values.   

802
miroslaw
24 days ago
jesusmunozjmj
jesusmunozjmjMonochrome
asked in Got a question?
Homogeneus source modeling

Hello everyone,I am attempting to create a homogeneous, squared light source using a rectangular array in non-sequential mode. Despite setting the following parameters:Layout Rays = Analysis Rays = 1 Number of X and Y = 13 Spacing in X and Y = 1I am unable to achieve the desired result: a simple 13x13 array of equally spaced rays. Is there an alternative method to model this type of source? Thank you in advance for your help!Best regards,Jesús Muñoz 

551
David.Nguyen
Luminary
25 days ago
jsung
jsungVisible
asked in Got a question?
How do I know total number of rays in the new ray file?

As per title. I’m not sure if this was asked and answered before.Is there easy way to figure out total ray numbers of the ray file before tracing it?

695
jsung
1 month ago
Jiawei LIU
Jiawei LIUSingle Emitter
asked in Got a question?
Can grid sag surfaces be used on object surfaces(surface 0)?

I tried to change the object surface type to grid sag surface and imported the grid surface data, but the surface sag map did not change. When I imported the grid sag data to any other surface, it was displayed normally, so I am a little doubtful whether grid sag surfaces can be used on object surface(surface 0)? If not, is there any other way? I want to analyze the imaging results of a complex target surface after passing through a certain optical system. Can adding a grid phase surface after the object surface achieve my goal? if yes, How to convert the grid sag surface into the required grid phase surface?

431
David.Nguyen
Luminary
1 month ago
jesusmunozjmj
jesusmunozjmjMonochrome
asked in Got a question?
Array type on sources (NSC)

Hi, I am using Non-Sequential mode in OpticStudio, and I am trying to create a square source from a rectangular array. The problem is that the source only traces rays to a single quadrant of the optical system. I would like to create a square source without having to create four separate sources in each quadrant. Thank you in advance! Best regards,Jesús 

513
jesusmunozjmj
1 month ago
Frantisek
FrantisekSingle Emitter
asked in Got a question?
Collimating beams with lightpath lenses

I would like to ask you to help with one Zemax file.I use one Lightpath aspheric lens to collimate beam in 30 mm distance.In POP there is some Newtons circles as picture of irradianceIn don’t know, why there is no standard Gaussian distribution of beam. It is looks like some interference of sources……Is it possible, that in lens model is EVEN ASPHERE used ?Or there is some bad settings somewhere ?POP picture, setting and lens data of the lens are in files.Thanks for any answerBest RegardsFrantisek

661
Egis
1 month ago
S
Sasha.BrodskyMonochrome
asked in Got a question?
Spot efficiency for laser and focusing objective blackbox

I designed a custom objective for a laser system, and I want to compare the efficiency (including aperture clipping), and peak intensity with a catalogue objective, whose Blackbox I have.I found that Huygens PSF gives spot quality without considering efficiency, and the geometrical analysis method GIA shows efficiency but not the realistic spot size and peak intensity.Is there a standard practice for comparisons like these?Thanks in advance. 

741
S
Ansys Staff
1 month ago
rayTracer
rayTracerSingle Emitter
asked in Got a question?
What is the equivalent non sequential object type for sequential extended toroidal grating surface

Hello Zemax Community,I've modeled a freeform lens in sequential mode using the Extended Toroidal Grating Surface Type in Zemax. I defined my lens with parameters for Radius, Conic Constant, and Extended Polynomial Terms. Since the lens is an astigmatic component, it has curvature along the Y-axis while remaining flat along the X-axis, which is why I selected the extended toroidal grating surface.When I converted the sequential model to a non-sequential model using Zemax’s “Convert to NSC Group” feature, the lens appeared as a combination of Standard Surface, Grid Sag Surface, and Compound Lens. However, the performance doesn’t match my original sequential model, and I suspect the conversion process may not have fully captured the lens design.My question is:Is there an object type in NSC mode that allows me to manually enter my Radius, Conic Constant, and Extended Polynomial Terms to recreate the lens accurately? Are there recommended steps for converting this type of lens from Sequent

210
rayTracer
1 month ago
Tiago117
Tiago117Infrared
asked in Got a question?
Fidelity of aspherical lens export to .dxf

I read this article (How accurate is the CAD exchange? – Knowledgebase) and I am wondering how it applies to the 3D .dxf export.I intend to use this exported polygon in a silicon fabrication process called greyscale lithography. And now I am wondering how realistic this polygon is. I have an aspherical lens with its 4th, 6th and 8th order coefficients optimized.I'm not expecting a perfect translation as the greyscale process itself isn't perfect (and transforms this continuous shape in steps). But using as many segments the software allows (128), would you say this export is aspherical "enough"? As in, while it may not be as perfect as the modelling Zemax uses, it is still, nonetheless, an aspherical surface, similar to the one I optimized?My exported aspherical lens with 128 segments.Thank you!

250
Tiago117
1 month ago
chumphreys
chumphreysMonochrome
asked in Got a question?
Modeling a conical spatial filter in non-sequential

 I am looking to model a conical spatial filter and I am trying to figure out the best way to do this. I started with a non-sequential model and an absorbing annular volume as the spatial filter. I am specifically trying to look at the spatial frequencies being clipped by the spatial filter, the output beam profile, and how the roughness of the surface of the spatial filter can impact the output beam. I am using the detector viewers to look at the output beam but is there a way to quantify these results. Any assistance would be greatly appreciated. 

562
chumphreys
1 month ago
pepe
pepeMonochrome
asked in Got a question?
Spot size inconsistencies between the designs with the same lens

Hello,I created an optical system using Thorlabs collimator  RC08FC-P01 (90 degree reflective mirror) and AL2550M  lens. The Zemax files were obtained from Thorlabs site and modified to fit my needs.If I only use a lens as designed by Zemax engineers, the spot size for 405 nm is 0,15 microns, but if I use a collimator and then put the lens in the beam path, the spot size for the same wavelength is much larger at 55 microns.Is this due to design of collimator, software artefact or something else? I attached .zmx files of the lens and collimator+lens designs.

1083
David.Nguyen
Luminary
1 month ago
Leon
LeonInfrared
asked in Got a question?
I am confused about scattering power

Assume 5 extreme cases:1  If a surface is transparent with Scatter Fraction 1 , how much power is scattered? 2  If a surface has 0.5 reflectance with Scatter Fraction 1 , how much power is scattered and spcular reflected?3  If a surface has 0.5 reflectance with Scatter Fraction 0.5, how much power is scattered and specular reflected?4  If a surface has 1 reflectance with Scatter Fraction 1 , how much power is scattered and specular reflected?5  If a surface has 1 reflectance with Scatter Fraction 0.5, how much power is scattered and specular reflected?

652
Leon
1 month ago
光
光儒.王Single Emitter
asked in Got a question?
Why MCSD affect the thermal analysis result?

When i make Thermal to analysis the optical performance (MTF..), the value of MCSD will affect the results.When i set the MCSD>SDIA, the thickness value of air gap will be different.Do you know how the MCSD affect the calculation of air gap thickness?

301
MichaelH
Luminary
1 month ago
Tdsorens
TdsorensSingle Emitter
asked in Got a question?
Tracing an EXPLICIT ray in Sequential Mode

Is there a way to trace an Explicit ray (defined by x, y, z, l, m, n) instead of an Implicit Ray (defined by Hx, Hy, Px, and Py) in the Single Ray Trace Analysis or Merit Function?I am trying to trace a ray from Surface 1 with (0,0,0) coordinates and direction cosines (0,0,1) through a system with tilted and decentered mirrors making it such that the ray will not pass through the center of the pupil therefore making the implicit method ineffective.

532
MichaelH
Luminary
1 month ago
SPJensen
SPJensenSingle Emitter
asked in Got a question?
Phase Errors Reconstructing .ZBF Text File

I used Matlab to write a .ZBF text file for POP.  When Zemax reads the file in the irradiance is perfectly replicated but the phase is not; when non-zero the phase looks like random noise. This is very strange because you need to write the .ZBF file using Re and Im values for the field. Unless the Re and Im values are both correct in the file you can’t get the correct irradiance values. I have done this before and it worked so I had a friend with an older version of Zemax installed (22.1.2) check the same file. His version of Zemax correctly replicated the phase. I am using version 2023 R1.03 on a windows machine. Any ideas as to why this is happening? Did the .ZBF format change? Is there now a setting I need to adjust in Zemax when I import a file? Is this a known problem that has been fixed in an update? Matlab intensity:Zemax IntensityMatlab PhaseMy Zemax Phase:Old Zemax Phase: 

301
SPJensen
1 month ago
pepe
pepeMonochrome
asked in Got a question?
TIR (total internal reflection) error during the lens optimization popping up

Hello, I use OpticStudio 15.5 SP3 and I have an issue with optimizing the design consisting of “of the shelf” components by Thorlabs, reflective collimator, and objective lens. I want to obtain the image in focus, but I get the error stating: Error in target 5. TIR at surface 7!Possible reason for this behaviour is negative thicknesses: 1. in collimator in order to get the rays reflecting of the mirror, and 2. in lens in order to make the rays go through the lens. If I change the thickness following the reflective collimator to positive (-100 to 100) then the rays reflect inwards. If I change the thicknesses of lens and air after lens from negative to positive, the rays are reflected from back surface of the lens. How do I run optimization without error?  

532
pepe
1 month ago
D
Dr. Neha.KhatriVisible
asked in Got a question?
Clarification on Using Zernike Coefficients in Zemax

I have a set of 37 Zernike coefficients that I need to input into Zemax for my project. However, I'm unsure about the correct procedure for reflective surfaces (mirror). Should I divide each coefficient by 2 and then multiply by the wavelength?Additionally, I have chosen to use the Zernike standard sag for this application. Is this the right approach? I also noticed that the peak-to-valley (PV) value in my wavefront map differs from the measurement obtained from Zygo.

2093
D
1 month ago
harshana
harshanaStudent
asked in Got a question?
Diffractive surface ray direction calculation

I looked at the following article.How diffractive surfaces are modeled in OpticStudio – Knowledgebase (zemax.com)I am confused about how the direction is calculated after determining the phase profile. The article says the cosine of the derivative of the phase difference is added. But that difference is not between -1 and 1 in most cases. For example, if wavelength=400, p=1, p^2 coeff = 1, the change of direction is 400/(2pi) > 1. Can someone explain where I am going wrong here?

7336
Jeff.Wilde
Luminary
1 month ago
J
Jonathan.EverettSingle Emitter
asked in Got a question?
Importing Zernike Fringe Sag data from MetroPro and correct normalization radius

I have measured the surface deviations of a 16mm diameter lens with a Zygo running on MetroPro and have exported a 37 term Zernike Fringe Sag data table. When I enter the Zernike Fringe Sag coefficients directly into OpticStudio the magnitude of the resulting transmitted wavefront error is appropriate to the expectation based on the surface error but the Normalization Radius was left defaulted to 100 in OpticStudio and was not set to match any corresponding radius value in MetroPro. If the Norm. Radius is changed the resulting wavefront changes but not in any way that makes sense with regards to the Zygo measurements or expectation. Is there a method to set the Normalization Radius in OpticStudio such that Zernike Fringe Sag data imported from MetroPro can be correctly used to model an as-built lens? Could the MetroPro output also assume a Normalization Radius of 100?

7144
D
1 month ago
Amy Entin
Amy EntinInfrared
asked in Got a question?
STP Export with Object Names?

Hi, I’m exporting an NSC file as a STP, and it creates the bodies and labels them by object number. Does anyone know of a way to automatically set the comment of the object as the object label in the STP file?

353
David.Nguyen
Luminary
1 month ago

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