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3264 Topics
hahapypy
hahapypySingle Emitter
asked in Got a question?
How to convert CodeV Decenter type "Global Coordinates' into Zemax

I have a surface “OBJ_EP’’ in Code V. Its thickness is 7.049 and the decenter of it is below What I did in Zemax: create 3 coordinates breaks ahead of the surface as image below. The first one is coordinate return Orientation XYZ to the global reference surface “ILL_IMS” as CodeV. The second is YZ shift. The final one is tilts (I am aware of that the tilts sign is opposite b/w CodeV and Zemax)However the convert result does not look right. Can anyone help? thanks  

401
hahapypy
15 days ago
Thaniga
ThanigaInfrared
asked in Got a question?
Basic lens with 6:1 ratio curvature

Hi , I tried to design a simple bi-vex lens with a curvature ratio of 6:1. I used CVVA, CVGT, CVLT and ABSO operands, but I couldn't match the desired 6:1 curvature ratio. Could you please guide me on how to achieve this specific curvature ratio using these lens design techniques?I attached the design as well. Thank you Regards,Thanigachalam P

843
Berta.Bernad
Zemax Staff
15 days ago
Corkas
CorkasSingle Emitter
asked in Got a question?
non-sequential mode: hyperhemispherical object

Hi there,I try to model a hyperhemispherical object in the non-sequential mode, however, Zemax won’t let me to do so. I get an error saying “cannot create object because there are too many faces in the source objects”. I tried to use the Boolean operation and substracted a zylinder object from a sphere. This works for truncated spheres until a hemisphere results. If I shift the zylinder further and the result would be a hyperhemispheric object the error occurs. Is there another possiblity to create a hyperhemispherical object? Many thanks for your help! :) 

685
Berta.Bernad
Zemax Staff
15 days ago
Flurin Herren
Fully Spectral
Flurin HerrenFully Spectral
posted in People & Pointers
Image plane in a STOP analysis workflow

The STAR Module in Ansys Zemax OpticStudio allows users to import FEA datasets and analyse their impact on optical performance. In some optical systems, the load cases on the image plane can significantly affect this performance. For example, a lateral shift of a detector or receiving fiber due to the expansion of the housing in an optomechanical system may have a considerable influence. I`d like to briefly demonstrate how this can be addressed within a STOP workflow using Ansys software packages:On the left, as a starting point, we have an optimised optical system for a transceiver. These types of optical transceivers are widely used in fiber optics communication systems. The geometry is then exported into a CAD environment, where the housing for the transceiver is designed. At this stage, we also design the initial section of the receiving fiber, which represents our optical image plane, as a physical geometry (labelled as Ip in the graph above). The diameter of this geometry should

190
Flurin Herren
Fully Spectral
15 days ago
Kel.P
Kel.PSingle Emitter
asked in Got a question?
OpticStudio crashes when using the tilt/decenter feature in the lens data editor

I have a sequential model that already contains quite a few coordinate breaks. Today, when trying to use the “Tilt/Decenter Elements” button, the software simply closed without an error message after I clicked “OK” on the pop-up window. I now can’t use the function at all without the software crashing. I have tried:- docking all windows- removing all analysis windows so that only the Lens Data Editor is open- removing all solves- using a variant of the same model saved as a separate file (worked for the first element I tried, then crashed after I tried tilting/decentering a few more elements).It seems to work if I create a simpler lens model that has fewer surfaces and coordinate breaks, or if I create coordinate breaks by adding new surfaces and changing the surface type.I have checked Windows Task Manager and saw that the CPU usage and memory don't increase during the crash.I am using version 2023 R1.

713
Kel.P
15 days ago
Masato.Aketagawa
Masato.AketagawaSingle Emitter
asked in Got a question?
How to set the lens aperture in non-sequential mode

I noticed that there is no option to set the aperture when creating a lens in non-sequential mode. Please teach me how to set the aperture.

955
David.Nguyen
Luminary
15 days ago
Jonathan C
Jonathan CSingle Emitter
asked in Got a question?
How do you perform Lambertian scattering in IR with a UV source in NSC?

Hello,I have a source that emits ultraviolet light. The light passes through an optical fibre and then hits a material that emits infrared light in a Lambertian manner.How can I ensure that only the rays emitted by the excited surface of my cylinder are all infrared? As you can see in the image below, my source emits infrared light, which is not the case. The small disc above is a detector with which I want to see only the infrared rays of my cylinder.I tried do this according to this tutorial but I don't understand what I am doing wrong.https://support.zemax.com/hc/en-us/articles/1500005575642-How-to-model-fluorescence-using-bulk-scattering 

412
Jonathan C
16 days ago
S
Shaojie. ChenInfrared
asked in Got a question?
Export .stp file without beam showing

Hi,I’m trying to export a .stp file that includes both optical components and beams for the opto-mechanical design. However, despite trying different settings a few times, I still haven’t been able to include the beams. The layout is shown below.Has anyone had experience with this or suggestions on how to resolve the issue? 

754
Keke.Zhu
18 days ago
DavidV
DavidVSingle Emitter
asked in Got a question?
Including scatter in sequential merit function

Hi All,I’m attempting to model a system where the detector surface essentially acts as a Gaussian scatterer.  My merit function is comprised mainly of GENF operands to determine, after the effective scattering, the ensquared energy as seen by the detector.  I know in the geometric enclosed energy analysis there is a toggle to include scattering, but I cannot find a way to get the Merit Function Editor to include the scattering into the results.  This scattering has a huge impact on the ensquared energy, so I really need to figure out a workaround.  Does anyone have any suggestions? Thanks,Dave.

200
DavidV
18 days ago
Mubeen Mahmood Puthiyangadi
Mubeen Mahmood PuthiyangadiMonochrome
asked in Got a question?
Problem while converting to Blackbox

Hi all,I am encountering a problem while i convert design to black box. Design is with multi configuration. Is it possible to convert the design having multiconfiguration ino blackbox? 

343
David.Nguyen
Luminary
19 days ago
yuan.chen
Zemax Staff
yuan.chenZemax Staff
asked in Got a question?
Why I got the message Failed to locate OpticStudio when trying to run an extension

   

2935
yuan.chen
Zemax Staff
19 days ago
Yang.Yongtao
Ultraviolet
Yang.YongtaoUltraviolet
asked in Got a question?
How to set a wavelength bandpass filter in sequential mode?

Hi Zemaxers  In sequential mode, how to set a filter like below? or is it possible to set such a layout in sequential mode?The filter has two parts, the upper area blocks 500nm and below, and the other half is OK for all wavelengths. Best regardsYANG

1247
Yang.Yongtao
Ultraviolet
19 days ago
dkominsky
dkominskyMonochrome
asked in Got a question?
Soft criteria in Non-sequential merit function

I’m looking for suggestions on how to achieve soft criteria in a merit function (particularly in non-sequential mode).  For example I’ve got two optical elements, and I’m trying to optimize the system for a tight focus, and one of my variables is the distance between the two objects.  I’ve got a hard criterion (NPZG) in there that says that the space between the two objects must be large enough to ensure they don’t overlap.  What I’m trying to figure out is how to instruct the merit function that, all else being equal, I want that distance minimized as much as possible, but not at the cost of sacrificing focal spot size. I know that I can set the weighting of a particular operand to be very small, but trying to achieve the balance of that against all the other operands, especially when the unit systems can be so radically different seems prone to problems.  

381
David.Nguyen
Luminary
19 days ago
anurag316
anurag316Dark Energy
asked in Got a question?
Parallel rays approximation in Polarization Pupil Map

In the polarization pupil map help, there is a warning "WARNING: The polarization pupil map assumes the rays are close to parallel to the z-axis and only uses the Ex and Ey components of the electric field to calculate the polarization ellipse. If the rays have a significant angle relative to the z-axis, this approximation will be invalid.” I am trying to understand the following 1) Up until what angles is this approximation valid? Is it similar to small angle paraxial approximation where sin(θ) ≈ θ? 2) When rays are not parallel to the z-axis, there is going to be Ex,Ey and Ez components. Is the PPM reporting the projection of this on the x,y plane? i.e. is it reporting Ex and Ey components and ignoring the Ez component? If that’s the case, we should be able to calculate Ez using k.E = 0 since we can get the ray direction.

260
anurag316
20 days ago
Tiago117
Tiago117Monochrome
asked in Got a question?
How to circularize an elliptical beam

Hello,I'm trying to take an elliptical beam (example from a laser - 26deg in X and 37deg in Y) as defined by the POP settings, using Gaussian Angle, and use a polynomial lens to circularize it.My problem is that I get a better fiber coupling efficiency using a standard circular aspherical lens than what the optimization wizard gives me for the polynomial lens.Are my assumptions wrong from the start or am I simply doing something wrong with the software?In steps:I define in the POP settings a Gaussian beam with an elliptical profile:In one simulation, I select an Even Asphere and using the POPD merit function, I get 93% mode coupling efficiency from a lens initially designed for a circular beam. The initial optimization wasn't even for the elliptical beam. It was for a circular one.But when I change the lens surface to a Polynomial one and set the different X and Y coefficients to variables, the simulation seems to only give me below 90% mode coupling efficiency. It never seems to reall

754
Tiago117
21 days ago
Sean Turner
Ultraviolet
Sean TurnerUltraviolet
posted in Got a question?
Zemax.com will be moving to Ansys.com

What does this announcement on the front page of www.zemax.com mean for this community forum and knowledgebase?I hope the forum will stay open, but in the case it gets shut down, will there be an equivalent forum on the Ansys website? Will legacy Zemax users have access without a license for an Ansys product?   

57219
Nicholas Herringer
Zemax Staff
21 days ago
C
Chris.SvecInfrared
asked in Got a question?
Code V and OpticStudio under same roof -- what should users expect?

I’m interested in a statement about the path forward with the aquisition of Ansys by Synopsis -- now Code V and OpticStudio will be owned by the same company.  What can users expect? 

11938
Andrew_Davies
21 days ago
whit2452
whit2452Monochrome
asked in Got a question?
How to model atmospheric dispersion

Hello there, how do you model atmospheric dispersion in Zemax? I have been searching online and can only find papers publishing the results of dispersion, no directions on how to implement it into my design. According to a source, “ZEMAX has a built-in atmospheric model to simulate the effects of refraction through Earth’s atmosphere. Six parameters control the model: observed zenith angle, ambient temperature, atmospheric pressure at the observer, relative humidity, height of the observer above sea level, and latitude of the observer.”How do I model this? I can adjust temperature and pressure in the environment window. Clarification would be greatly appreciated!

642
Sean Turner
Ultraviolet
23 days ago
Hui Chen
Zemax Staff
Hui ChenZemax Staff
posted in People & Pointers
Jitter Series Part 2: Using OpticStudio STAR module to analyze high frequency jitter impact on PSF and MTF

IntroductionOptical systems in aerospace industry often experience random vibration excited by internal and external forces, ranging from engine noises, scanning motions, cryogenic cooling in airborne systems to gravity, winds, and other disturbances in ground-based systems. These random motions cause optical elements to shift position therefore impact system imaging performance and lead to Line-of-Sight (LOS) jitter and loss of image quality. Vibration jitter analysis is often required in such systems to help quantify performance degradation due to jitter and help guide optomechanical design and accurate system error budgeting. In addition to the Aerospace & Defense industry, jitter is also an important topic in imaging systems used in Automotive, LiDAR, and Consumer Electronics. In general, any imaging systems experiencing random vibration may see jitter impact on system MTF performance.   There are two types of LOS errors that are typically considered: Drift or DC pointing error

4052
Mark.Nicholson
Luminary
23 days ago
Hui Chen
Zemax Staff
Hui ChenZemax Staff
posted in People & Pointers
Jitter Series Part 1: Using OpticStudio STAR module to analyze drift of Line of Sight due to temperature variation

IntroductionOptical systems are often subject to random vibrations due to internal and external disturbances. This causes elements to shift position and as a result the formed image also moves around on sensor. This movement of the beam is referred to as the Line-of-sight jitter. Jitter due to vibration can lead to system performance degradation, specifically line-of-sight error, image distortion, and loss of image resolution. In a sense any optical systems operating under field conditions are likely to experience some levels of structural vibration. But jitter analysis is particularly important for applications in the Aerospace & Defense and Automotive industries, for example, a head-up display mounted in a car driving on a bumpy road, a camera mounted on an aircraft in flight, a space telescope launched in orbit observing earth or other celestial objects. Vibrations exist in these systems and degrade the system performance. In an imaging system where image registration and resolu

5213
Great_Dr_Park
24 days ago
Vlad I
Vlad IDark Energy
asked in Got a question?
Single Mode Source Diode

I am looking at parameters list for a source diodeParameters 7 - 9 are divergence anglesParameters 16 - 18 are Gaussian widths of the spatial distribution But doesn’t Gaussian widths define divergence for the Gaussian beam at its waist ?Should be parameter be connected for M2=1?    

260
Vlad I
25 days ago
D
En-Lightened
Don DickinsonEn-Lightened
posted in Licensing and Installation
Zemax software compatibility with new Apple M1 computers

Hello! Apple recently introduced a Macbook with a new “M1” CPU, rather than the usual Intel CPU. This new CPU requires that any software written for standard Intel or AMD processors has to either be re-written for the new CPU or emulated via virtual machine software such as Virtualbox, VMware Fusion, or Parallels. Zemax products (OpticStudio, OpticsViewer, and OpticsBuilder) are WIndows based rather than native Apple applications, so they will not be rewritten for the M1 CPU.  Zemax software has worked fine with virtual machines on Apple computers in the past. However, as reported by some Zemax customers, it appears that Parallels is still in Beta on this platform, and that there is also a “preview edition” of Windows 10.  Zemax uses Thales (formerly Sentinel) licensing technology which does not support preview or beta editions of Windows 10. This means even if Opticstudio installs, you cannot access a license (either a black USB key red key , green key, or software-based (softkey) lic

321116
D
En-Lightened
25 days ago
E
Zemax Staff
Erin.ElliottZemax Staff
posted in People & Pointers
Setup tips in nonsequential mode: An off-axis parabola example

Objects in nonsequential mode can be used as reference points, and set so that they don’t interact with the rays.  This is useful for setting up folded systems, Boolean objects that are combinations of other objects, and systems with CAD parts referenced to a mechanical coordinate system.  Also, Source Rays can be used with optimization to automatically position parts along a gut ray. An off-axis parabola (OAP) created as a Boolean combination of two other objectsI’ve created an off-axis parabola (OAP) file that illustrates those techniques.  The mirror is a Boolean combination of two objects: a parabolic “lens” and a cylinder volume.  I’ve placed spheres at the origin of each part by referencing the Sphere to its object in the Ref. Object column of the Nonsequential Component Editor (NSCE).  I’ve also color-coded rows and objects to display in the same color using,Properties / Type / Row Color and Properties / Draw / Object Color. NSCE with reference spheres, axes, and source rays use

1460
E
Zemax Staff
26 days ago
David.Nguyen
Luminary
David.NguyenLuminary
asked in Got a question?
How to explain the location of the object principal plane in a thick plano-convex lens

From reading this interesting discussion below.I went down a rabbit hole when I was figuring out where the object principal plane of a thick plano-convex lens is. I’ve been taught to find the principal planes like its described at RP Photonics, that is:extrapolate the ingoing and outgoing rays such that they meet in a planeHowever, when rays parallel to the optical axis enter through the plane face of the lens, the ingoing and outgoing rays will meet exactly along the convex face, which is not a plane.Therefore, I believe the principal plane is defined as the plane coincident with the convex surface vertex. At least, this is what I’ve taken away when I used OpticStudio (surface 1 is the convex surface).I also found this information here:Plano-convex and plano-concave lenses have one principal plane that intersects the optical axis, at the edge of the curved surface, and the other plane buried inside the glass.I can accept this definition, but I was curious, from a teaching perspective,

1414
Jeff.Wilde
Luminary
26 days ago
whit2452
whit2452Monochrome
asked in Got a question?
How to make Reflective Slit

Hello there, the question is as the title states. I want to design an assembly where there is a reflective slit, how do I enable some of the rays to pass through the aperture and the other ryas to be reflected at an angle into another camera? I’ve seen resources on multi-configurations, but that is not quite what I am doing. Any resources or examples of others doing this greatly appreciated. I know it is possible, just not sure how. 

381
David.Nguyen
Luminary
27 days ago

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