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Hi,I’m working on mixed-mode model and I would like to optimize it - both sequential and non-sequential components.Is it possible to add constrains like CVLT/CVGT in sequential optimization to NSC? Can I optimize both components simultaneously? How can I add constrains like previously mentioned to e.g. only lens radius 1?Can anyone help me with this? Do you have any tips for mixed-mode?Fabian
LED with diffuser model
I have a LED as object surface (±1mm object height) and 2mm thick Diffuser (ground glass) about 5mm away from OBJ surface. The Diffuser Surface 2 is ground glass surface with a Lambertian scatter property. I would like this surface to be the actual object surface that I can image onto to image plane. How could I model this sequentially in zemax?A schematic illustration of what I intend to design:Schematic
Optimize Configuration Pupil
Good morning everybody!I’m simulating small Keplarian Telescope (Two lens groups + focus inbetween, collimated input and output) in Optic Studio, having a movable mirror in front of it. One of my optimization goals is to have the entrance pupil of the telescope on that mirror, while the exit pupil should be on the aperture of the second lens group. The movement of the mirror is modeled by configurations.The necessary fields come by the movable mirror, so the entrance pupil on the mirror is already given through the configurations setup. But how would i ideally model the exit pupil between the configurational beams on the output?I tried to drive the centroid positions (CNPY) to zero in the MF until now, but that is unfortunately not sufficiently exact, since a very small shift of the centroid already shows a quite large shift in z-axis pupil position.Anybody having an idea how i could better optimize that?Thank you! :)Greets!Jonas
Simulate the diffraction efficiency of holographic optical element as coupler for AR waveguide
Hi all, I have a question about simulating the diffraction efficiency of holographic in-coupler for AR waveguide. I would like to mimic what Bernard Kress had did for the figure 19 (also attached below) in his paper ‘Waveguide combiners for mixed reality headsets: a nanophotonics design perspective’. He said the relfection HOE coupler with mean index 1.53, index modulation 0.03, thickness 16um, wavelength 550nm, and the construction angle 0 deg and 50 deg is able to achieve up to 17 deg (FWHM) angular bandwidth. However, when I try to reproduce this result in Zemax, I found it is only about 5 deg. I also attached the Zemax file below. I would appreciate if anyone could help me to vefiry this discrepancy. Thank you! Best,Kaden
Feature request: Fletch rays colors for forward and return path + Dynamic size on Fletch arrows relative to zoom ratio
Hello all!(These asks might be a feature request)Is there a way to define colors based on forward and return optical paths in a double-pass system? Also, how do I make the fletch arrows change shape dynamically with Zoom in a 3D / Shaded layout?Thanks
Ask An Engineer: Laser diode and Fiber coupling question
Hi expert,I want to simulate the focusing model (laser diode couple to fiber), and want to use FICL operand to optimize model.But I don’t know how to set the Object space NA in the system and Sna in the FICL. (Laser H_FWHM 18deg, V_FWHM 23deg)If I have fiber MFD value, I can use the formulas NA=2*lamda/(pi*MFD) to set the Rna. And I right? thanks,C.L
Fresnel type Projection Lens Mixed Mode Simulation
Dear Zemax community,I have been trying to design a bottom lens for a projector with a BFL of 90mm, Clear Aperture = 115 mm. We started with initial Edmund optics concentrator Sequential design except that we had to keep the second surface with Fresnel coefficients shown below. We then copied those optimized base radius and coefficients in NSC Editor and gave the desired groove frequency of -2, pitch = 10. But in mixed mode, the surface is not able to focus the marginal rays until we set the object position in the reverse direction. Is it the right approach, if yes then:why doesn’t it show correct EFFL in mixed simulation? Why is the convergence not shown in shaded model? How to use rms optimization in mixed mode?And in case it isn’t the right approach, I would like to know the right direction.
Rotation of off-axis mirror
Hi, I have been trying to rotate an off-axis mirror along the mirror surface axis (Geometric axis of the mirror). I have created an off-axis mirror in the sequential mode by decentering. When I tilt the mirror, it only rotate along the vertex of the parabola. I also tried to converted to NSC parts. However, it also rotate along the parabola vertex. I tried to created some coordinate to move the mirror to where the geometric center is, but it is quite messy. Is there any better way to do it? Thanks a lot.
Diffraction Grating Direction
Hello,What is the supported method for changing a diffraction grating’s direction? By default, the grating is ruled in the x direction. I would like to change it to the y direction. I have tried surrounding the grating by a coordinate break of 90 degrees about z, but this did not change the orientation of the diffracted light. I have also tried using 90deg rotation about z in the tilt/decenter menu to no effect.Thanks!
What does this coating type do?!?There are several options for Coating under Surface Properties but I can’t seem to find any explanation of them.I found “Default Materials & Coatings Supplied with OpticStudio” but many on the list are not included.Could someone please point me to where details on them could be?
longitudinal aberrations for non-rotationally symmetrical systems
Hello, thank you as always.question For non-rotationally symmetrical systems, how can I deal with the problem of incorrect plotting of longitudinal aberrations? Perhaps it is necessary to use a macro to create a vertical aberration drawing macro that corresponds to the upper and lower pupil coordinates. If there is another method, or the flow (hint) of this method, could you tell me? Thank you.
Simulation of existing optical illumination system and then making it compact by reducing the size of lens in it.
I am trying to simulate an optical illumination system.Description:The main source is LED, light from it is carried out by a Multimode optical fiber cable whose end is fixed into a focusing light tube. This focusing light tube provides complete TIR to light entered into it and then focusses it into a circular spot using a plano-convex lens.Problem caused:I have set up the system in Zemax with all the specifications I have but, facing problems with focusing the light into a spot at the required working distance. The required working distance is 150mm from the position of a convex lens which is also inside a focusing light tube.My idea was to initially simulate the existing system and then replace the existing plano-convex lens with a smaller lens and adjust the system such that I can get the same spot size as the existing system. please give me your suggestions on how I can proceed further to obtain a circular spot with the existing simulation, as I attached the simulation file below. K
Zygo DAT file import for grid phase surface?
I’m trying to import a Zygo generated WFE (phase -- saved as a .DAT file) file provided by a vendor as a grid phase surface. When I select the file and click “import” I get the error “Grid files must have at least 5 rows and 5 columns.” The file appears to be a binary metropro dat format, it’s unclear how to reformat the data to make it more friendly for import. I am using version 21.2.2 Premium. Is there a way to import these files or convert them such that they can be imported?
Non sequential merit function and polar detector
Hi all!My system is a two prism system in Risley configuration:I need to find the exact prisms orientation in order to redirect light straight at the exit. I numerically calculated them, but ray trace tells me I am slightly off.In order to check it, I am using a polar detector and my goal is to have theta=0 (first column of the extracted .txt file full with power value). I have built a merit function , trying to follow what is encompassed in here and replacing the polar detector with a rectangular detector: https://support.zemax.com/hc/en-us/articles/1500005576602-How-to-optimize-non-sequential-optical-systemsMy system has become: At zero degrees incident field, the angular irradiance show 0,0 which seems to be correct: If I tilt the input beam of about 15 deg, after optimization the polar detector shows still some misalignement:What could be the problem?Thank you for your help,best,Giulia.
When I wanted to run the Standardalone file link Zemax in Python, this error message popped up when I created the StandardAlone Application.
failed to launch C:\Users\86137\Documents\Zemax\ZOS-API Projects\PythonStandaloneApplication\PythonStandaloneApplication.sln:the operation was canceled by userAnd when I run the file get. I meet the error like this.I wonder if there is something missing or something wrong.
blue screen pops up
I have OpticStudio 16 and when I try to install it, the blue screen pops up at the last minute of the progress bar and I see the message below." stop code : PAGE_FAULT_IN_NONPAGED_AREA, failure contents : hardlock.sys "There are two PCs, using Win 10, and both PCs have the same phenomenon.Can I know the cause?
problem in optimising the beam spot in spectrometer
Hello,i am Akshay, new to zemax. I designed a spectrometer with mirror transmission grating and lens system. i could not able to focus the beam spot within airy disk diffraction limit. i did optimisation added variables in the merit function editor , given weights changed them accordingly. i have seen some difference but not able to get it within the diffraction limit. source as single mode fiber as point source with entrance pupil dia , 0.0042 mmwavelengths 815,840(central wavelength),860object distance 0.022 mm calculated for 1/e2 intensity NA at 0.09parabolic mirror MPD139-M01 - thorlabsfocussing lens AC254 150B - thorlabsi attached the file here. i tried many things but cant figure it out myself , can anyone help me out , i will be grateful Thanks indeed CheersAkshay
Laser Diode Simulation - Source Diode
Dear all,I need a help from the community. I would like to simulate a laser diode in Non-sequential mode. I am attaching here the datasheet of the laser diode I would like to simulate. On Zemax: I set as Object type → Source Diode After having set the wavelength, the Layout Rays, and the power I am getting stuck on this information: X/Y-Divergence X/Y SuperGauss Number X’/Y’ Delta X/YCan someone help me having a look to the file attached (datasheet diode laser) to fill the abovementioned parameters? Many thanks in advance Gianluca
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