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Hi all, I am trying to desing an imaging imaging lens for single color, 19:16, microdisplay. Got good enough mtf in both geometric and FFT. However, when using the extended scene analysis>>image simulation, it seems like the mtf is much worse(Checked against the cooke triplet, attched bellow also). I tried to change the sampling in both the pupil, psf etc. but still get blurry image. What am I doing wrong? Many thanks, Nadav EDIT: With only one color at the image simulation it's much better. I assume this is the problem?
Can I pull from multiple glass catalogs during glass substitution?
When you put a 'Substitute' solve on a material it will ask for a catalog. If you would like to pull from multiple catalogs, just leave this blank and put your catalogs of interest in your 'Catalogs to use' section of the System Explorer.
Cannot compute when chief ray cannot be traced
Hello! I keep getting the error message: 'Cannot compute when chief ray cannot be traced!' during optimization using least squares method. The optimization interrupts and resumes once I click 'ok' or 'X' on the message pop-up window. Any ideas how I could interrupt at the point where the error-message pops up to investigate the cause? Are there any options to automatically ignore this message and resume the optimization without having to click the message away manually? I am using the damped least squares optimization to optimize the shape of the example UD surface 'us_multizone_asphere' with two zones. I already tried different merit function operands without success. As it did not occur with simpler surface structures, I assume that some geometric surface constraints are required. Any ideas how to approach this (e.g. setting appropiate geometry constraints...)? Thank you! Simon
Hello, I'm using one of your examples from here: https://my.zemax.com/en-US/Knowledge-Base/kb-article/?ka=KA-01355 I want to use 1550 nm as a wavelengh however, the dispersion diagram for the materials don't have data for that wavelength - graph below. Is there anyway to overcome this? Thank you, Narciso
System transmission using detectors in non sequential mode
For modeling the transmission of a system I put sensor at the input and another sensor at the output, but I get a transmission which is not compatible with measurement values (it is much lower). For understanding what is go on, I build the following configuration: One ray as source, which incide in a BK7 cilinder at zero degrees, and put the detectors before and after the BK7, the first detector records the 100W of the input, but the second record 91.7W , getting 91.7% instead the 96% I expected. Indeed, at 'Coating-Transmsision vs angle ' I see that the transmisison for the BK7 is 0.957 at zero degree ( I used 590nm wavlength). But at the original model I need the overall transmssion integrated over all angles. What I made wrong with the detectors? There is it a more efficient form to establish the transmission of the system than my detectors aproach?
"Axis break" in NSC 3D layout
Is it possible to somehow create an axis break in the 3D layout when working in non-sequential mode? For example, if in my layout I have a beam source that hits an object that is a very long distance away, with no other objects along this path. I want to be able to see everything in the layout without having to zoom out so much that I can't see any of the details in the layout. Is there a way to create a sort of axis break that hides a large portion of the path?
Optimizing Folding Angle in Ring Enhancement Cavity
Hello, I am trying to optimize a basic four mirror ring cavity in a bowtie configuration. I am looking to optimize the system for the following traits in order of highest to lowest importance: 1. Folding angle of the mirrors to minimize distortions and abberations 2. Minimize the gaussian beam waist at a particular surface (currently set to a detector rectangle) Additionally if possible, I would like to see how much enhancement we achieve in the cavity upon reaching the cavity's steady state behavior. The system is designed in nonsequential mode. I have set the variables, but I not sure how to correctly use the merit function editor. How can I optimize for the two traits above, while keeping the variables within my physical constraints? Ring resonantor image from https://www.rp-photonics.com/ring_resonators.html
Why is my Ideal coating not working
A user asked why the Ideal Coating I.99999999 applied on an interface between two glass materials does not eliminate the surface reflection as expected. If you are applying this coating on a boundary shared between two objects, for the coating to work properly, it needs to be applied on the face that belongs to the object that’s defined later in the NSC Editor. For example, in the plot below, I have two glass plates where the back face of the front glass plate overlaps the front face of the back glass plate. In this case, to eliminate reflection at this interface, the I.99999999 coating needs to be applied on the front face of Object 3 because Object 3 is defined later in the NSC Editor. This is due to the Nesting Rule of object placement in Non-sequential mode. This is explained in the Help File at The Setup Tab > Editors Group (Setup Tab) > Non-sequential Component Editor > Non-sequential Overview > Object Placement In this case, if you apply the coating on the ba
Hello, I want to calculate for a scanning pulsed laser parameters like peak power, power of a single pulse and average power for eye-safety purposes. Is there a way of calculate these parameters for a particular setup using Zemax or does Zemax has sime kind of features for eye-safety calculations? Thank you, Narciso
Grazing Incidence in Sequential Mode
I am in the process of tyring to model grazing incidence toroids and ellipsoids for xray beam lines. What seems to be causing the most trouble is the sequence of rotations/decenters to achieve ~87 degree AOI on a surface. I have tried both tilting just the individual element, and also decentering a surfurce such that proper AOI is achieved (both using coordinate breaks) but nothing has worked. Is there something fundamentally different one has to do when dealing with such large AOI angles? Would this task be better achieved in non-sequential mode? Any advice or help would be greatly appreciated.
Adding company logo
I have a minor feature request. In all layouts and plots we can add the company name and other information.  It would be nice for presentation purposes to add an image in a box which could be a company logo.  You often see this on mechanical drawings. OK it's low priority I know!
Spot Size VS Spectrometer Slit Width
Hello I am trying to build a spectrometer and I’m interested in the spot size at different wavelengths and at different slit-openings. However, when using the RMS/Wavelength plots the slit width do not seem to affect the RMS spot size, while the spot diagram says otherwise. Is there any way to measure the spot size (preferably the width along the Y-direction) which takes the slit width into account? 0.7 mm slit width 10 mm slit width 0.7 mm slit width 10 mm slit width Hope you can help Best regards Mads Larsen
For some unknown reason, 'save' (as in save the current ZMX file) lost its shortcut assignment. In the shortcut assignment menu, I don't see a 'save' function to assign a shortcut, only 'Save As'. I don't know exaclty when this started, maybe with the latest version? How do I restore my 'save' shortcut? I tried resetting my settings, but that did not have an effect.
Tilt and wedge tolerance
I would like to request an improvement to tolerancing. I always find it annoying that Zemax wants theta-x and theta-y for tilt and wedge when a drawing will have simply 'wedge' or parellelism of a spacer. And wedge is usually quoted in arc minutes. I would like to specify wedge (eg 0.5') and have Zemax randomly choose the orientation around the axis and then automatically define theta-x and theta-y which gives that wedge in that direction. For backwards compatibility you could allow the choice of surface tilt or element wedge like you can choose S+A irregularity or Zernike irregularity. You would have to define which surface needed to have the wedge error or course.
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