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EmmanuelSingle Emitter

asked in Got a question?

Geometric MTF in Tolerance tab producing different values than in Analyze?

Hello. I’m new to a lot of features of OpticStudio, including tolerancing, and I have a question that likely stems from my lack of understanding of what the program is doing. In the Tolerancing user interface → Criterion tab, when in Inverse Limit mode, there is a button labeled “Check” that becomes available. I was under the impression that this checks the nominal value of the specified criterion. In this screenshot I have it set up to evaluate the geometric MTF at a spatial frequency of 8 cycles per mm (I assume those are the units?), and after clicking the “Check” button I get a value of 0.087. There is no compensation in the system.Shouldn’t this value then be the same as (or at least close to) what the geometric MTF in the Analyze tab would provide? In the screenshot below it’s clear that the average for all fields at 8 cycles per mm is well above 0.087.Am I misunderstanding what the “Check” button is doing? Thanks for your time!

Hui ChenZemax Staff

posted in Got a question?

How to make 3D layout draw a cylinder with tilted back face and export it to CAD STEP?

A user is asking how to make 3D layout draw properly a cylinder with tilted back face and subsequently export this part to CAD STEP file. When I tried using Coordinate break to tilt the back face, the layout appears funny and the CAD STEP part exported follows the layout appearance, which is not the right angle circular cylinder the user expected.  In this case, there are two ways to fix this: 1. Instead of using Coordinate Break surface to tilt the back face, use Tilted surface type instead.  2. Alternatively, you can also apply Elliptical Aperture on both the front and the back face of this part. On the front face, the Elliptical aperture will have the same X and Y radius, while on the back face, the Elliptical Aperture X radius will remain the same as that of the front face X radius, while Y radius needs to be set to 'Y_radius_front face / Cos(tilt X angle)'.  Now if you run CAD export on this part, you'll see a nice right angle circular cylinder.&nbs

Giulia PanusaVisible

asked in Got a question?

Non sequential arrays as boolean operands

Hi, I am trying to make a native boolean between an annulus and a non sequential object array. It seems there is an error there, so my question is, can non sequential arrays be used as operands in boolean operations? Thank you!

Jason.GuanMonochrome

posted in Got a question?

Why the hammer doesn't change the lens

I am trying to use hammer optimzation with material substitution, I am using multiconfiguration, why my lens doesn't change with the hammer optimization? Is there something prevent from changing? Thanks a lot. 

Girish.PandeyMonochrome

asked in Got a question?

Resolution of objective lens design

Dear all,Please help me to find the resolution of objective lens design in unit lp/mrad?ThanksGirish

Ilia.GruzinovMonochrome

asked in Got a question?

Tolerance Yield analysis

How Zemax represents values to calculate Yield information? For example, I need to draw it by my own criteria which the smaller than worse and we need to show percent of systems than smaller it takes than percent of systems become higher.

Monica93Infrared

asked in Got a question?

CRVT operand: different values in multi-configuration editor and lens data editor

Dear community,I have a question about the CRVT operand. First a bit of background:I have a simple system: an optical fiber in front of a collimating lens:Fig.1 :Optical fiber in front of collimating lensI am trying to do a thermal analysis. When the min and max temperature are added under (Sytem → Make thermal), the multi-configuration editor opens and a whole list of operands are shown. One of them is CVRT: Fig.2: Snapshot multi-configuration editor. Line 11 shows CVRT value for surface 3, for the different configurations (columns). Column 2 is the default configuration of T = 20 degrees celsius. I noticed that it is not the same value as what I see for surface 3 in the lens data editor: Fig. 3: Here, for surface 3, the curvature value is -6.82901 for the current active configuration. Whereas in the multi-configuration CRVT is -0.14643 (line 11, see figure 2) When I check the definition of CRVT I read: “If the multi-configuration operand is a CRVT, then the curvature of that surface

Craig.WhitehillMonochrome

asked in Got a question?

Creating narrowband filters in NSC using transmission spectra

I am looking to create a narrow band filters in NSC mode. They are roughly a 850 nm centre wavelength with a +/- 40 nm spread (cut on at 820 nm , cut off at 900 nm).How can I define this in zemax - is it a custom coating? Or is there a simple way to do this?

Giulia PanusaVisible

asked in Got a question?

Hi everybody! I would like to model wedged prisms in Risley configuration and I would like to ask you what would be the best way to do it, if sequential or non sequential. I would go for non sequential, do you have any suggestion for me about how to set it up? (I am a new user of Zemax!)Thanks to whoever will answer me!

Fabian.KnorrSingle Emitter

asked in Got a question?

Binary 2 phase plot

Hi,I have a stub containing only one Binary2 surface. If I go to (Analyze | Surface | Phase) the plot is empty. The respective “Sag” plot shows the curvature. Why is that? If I look at the following post I would expect the phase plot to work. Where is my mistake?Cheers

shubham.sharmaMonochrome

asked in Got a question?

Matching the lens CRA with Imaging Sensor CRA

Dear all,Could someone help me with finding the CRA of the exit pupil for my lens in zemax? This is to match the CRA of my lens with the given CRA of the imaging sensor.Also, how can we find the chief ray and marginal ray angle at various surfaces? I look forward for someone to help me out. Thanks in advanceRegardsShubham

MaximizatorSingle Emitter

asked in Got a question?

Hi Everyone! Help me please to model the lens array in sequential mode. I mean some lens (no microlens) in the same plane on the circle radius.

Slava KSingle Emitter

asked in Got a question?

Critical rayset generator not working

I tried to generate a set of critical rays as in the webinar below:Designing a Microscope Objective with OpticStudio - YouTubeBut clicking the button does not do anything at all.I’m using Zemax 21.3.1

Andreas.BitzerStudent

asked in Got a question?

Airy Disk on Camera Obscura does not work

I was trying to model a simple camera obscura in sequential mode.I wanted to check the airy disk depending on the size of the pinhole. The pinhole was simply defined by the semi diameter of the stop surface.The simulation worked correct but I became a bit confused since the airy disk was not affected when I changed the distance between stop surface and image plane.The only distance which affected the size of the airy disk was the distance between object and image plane which doesn’t make sense.Thanks for your help!

OliverInfrared

asked in Got a question?

How to keep the aperture unchanged when using a tilted surface?

Hi,I would like to simulate that light travels through a single mode fiber, and a coreless fiber, and the end of the coreless fiber is a tilted flat surface, so the light will be reflected because of total internal reflection or reflective coating. My problem is that I can not keep the aperture constant (usually the cladding of SMF and my coreless fiber is 125um) because of the titled surface, as shown below. Is there any method that is able to keep the diameter consistent (125um) ? Thank you! Oliver

Ryoji.OinumaSingle Emitter

asked in Got a question?

Physical Optics (POP) and Diffraction

Hello, everyone. I tried to use a single lens to focus the collimated ray to a single point. When I use FFT PSF analysis, I get peak with diffraction. However, when I use POP, I only can see peak without diffraction. I expected to obtain a peak with diffraction by using POP. What is the difference between FFT PSF analysis and POP. Thank you in advance.

AllieZemax Staff

published in User News & Alerts

October 2021 Community UpdatesNewsletter

WelcomeWelcome to Zemax's October edition of our monthly Community update summary. In this newsletter you will find:Featured Community posts, based on what you, the user, are searching for. So let us know what you want to learn more about! A list of Knowledgebase articles which are new or have been significantly updated in the last month. Mini interviews with our highlighted users. Each month you'll be introduced to some of these power users, so keep an eye out for them on the community!If you want to see something added to this list, reply in the comments below. This is your space, so help us to make it useful to you! Featured Community postsThe Code Exchange was introduced over the summer as part of our website revamp. Already, we have several submissions from users - both Zemax staff and non! These solutions have been vetted internally and are available for anyone who has an active, supported Zemax license. For more information about the Code Exchange, see this article. Below, we ar

Yadav.NishuMonochrome

posted in Got a question?

Optical design of omnidirectional sensor optics

HiIn optical design of Catadioptric System in CMOS camera optics. I have convex mirror and plane mirror as primary and secondary surfaces. So incoming rays will diverge when I will put on axis object at infinity. But I need them to come at plane mirror and then to CMOS optics. Vertical FOV and HFOV is given in degree and CMOS optics is given. How I can set object, aperture and field parameters for optical design in OpticStudio. I am attaching model of design. Please comment.

David.NguyenLuminary

asked in Got a question?

Message content disappears if attachment hasn't finished uploading

Hi everyone, I noticed that when I submit a reply with an attachment, and I don’t leave enough time for the attachment to upload, I get a message at the top of my browser saying the attachment wasn’t fully uploaded, and my message content is erased completely. The only thing that saved me is that by pressing Ctrl + Z in the message description, I could get it back. Then, all I needed to do is wait for a little longer, and then submit my message.Just wanted to make people aware of this issue, are you also experiencing this problem?Take care, David

Dixit.KumarStudent

asked in Licensing and Installation

regarding windows upgrade

I've my zemax opticstudio installed in windows 10 at the moment. But windows is providing free upgrade to windows 11. So if I upgrade to windows 11, will it invalidate my zemax opticstudio subscription?

KalebUltraviolet

posted in Got a question?

How to model a diffuse surface?

To model a diffuse surface in OpticStudio, you need to add a Lambertian scatter profile to the face of the object. Lambertian scattering will give the rays an equal probability of scattering anywhere in the unit circle - most diffuse surfaces are nearly Lambertian. The Lambertian scatter profile can be entered under the 'Coat/Scatter' tab in the 'Object Properties' of the object you would like to make diffuse.  Make sure you choose the correct 'Face' that you would like the scatter profile applied to. The 'Number of Rays' effects how many scatter rays will be generated.  The scatter fraction will be the amount of power from an incident ray gets transmitted into scattered refelction/transmission vs. specular reflection/transmission. For example, if the scatter fraction is 1, the specular ray will receive zero energy and will no longer be traced; and all the energy will be divided equally among the scattered rays. If the frac

Yadav.NishuMonochrome

asked in Got a question?

Designing Reflective System with One faceted surface and Plane Mirror

Hi All,I have 2 CAD files, thickness parameters of CAD files and distance between them. I want to design these with sensor. For that do I need single non sequential component in mixed mode or multiple non sequential components.

szInfrared

asked in Got a question?

Diffractive Optical Element DOE on a Cylindrical surface (Sequential)

I usually use Binary1 Surface to model DOEs (Kinoforms) in sequential mode.The Binary Surface can be shaped rotational symmetric (Sphere or Asphere) but this kind of Elements are usually produced on a Foil that only allows bending it in one dimension (Cylindrical).The (extended) toroidal grating surfaces allow this shape, but are only supporting linear gratings.Have I overseen a surface type?Is there a possibility to bend a Binary1 into a cylinder?BestSteffen

jbailygouldSingle Emitter

asked in Got a question?

How do I modulate one branch of a mach zehnder interferometer?

I’m building a laser doppler vibrometer as a senior project. To better understand how interference patterns work, I wanted to simulate this. In real life I will be using an electro optic modulator on one branch of the interferometer to heterodyne a carrier signal of