Is there a way to iterate through a list of zbf as input for POP? Could this be done in Macro? Any examples to refer to?Thanks very much.

I think I am not understanding something about how the optimization operands OPTH and/or OPDC are calculated.For example, if I set up a first OPTH to calculate for the image surface and Py = 1, then a second OPTH also for the image surface but with Py = 0, then shouldn’t the difference between the values of those two operands, when divided by the wavelength (with the conversion from microns to millimetres), give the same value as an OPDC operand with Py = 1?

I am attempting to create an array of Grid Sag lenses in NSC. I employed the Array Object and designated a single Grid Sag lens as the parent object. However, even with a minimal number of lenslets, there is a significant slowdown in performance. Additionally, I encountered an issue with the Array Object positioning the parent object not as the central lenslet but utilizing it as the coordinate origin, placing the other lenslets in only one direction. This poses challenges when defining the position of the array in relation to my other components. Are there more efficient methods for generating an array from a large GRD file?

Good Morning,In the NSC group of a mixed mode system, I uploaded a file .step regarding a lens having mirror property. It is highlighted by the orange color in the figure below:   I was wondering if someone knows why I see only the rays passing through the hole present in the lens surface, but I am not able to visualize the rays reflected by the lens itself. They should be back reflected and focused on the lens focus. Thank you for your answer. Best Regards,Aniello

In the past when importing CAD objects as *.stp the colors were shown also in Zemax. In the latest version CAD objects are shown in gray.  Is there something changed or are there new setting to get the colors of *.stp back aging?

When I try to run MTF analysis, I get a Zemax error message:Cannot compute MTF for zero weight,What is the reason for the error?  Where is the zero weight?All my field weights are 1.Thanks.  

Hello,I’m currently dealing with a partially afocal system in Non-Sequential mode, where a pair of rod lenses focus light from a gaussian source onto a detector. I’ve been observing a series of lines that I cant explain. They appear after passing through a cylinder lens, and are not present in if I put a detector next to the sourceI initially thought it was a sampling issue, but more rays simply made these structures more apparent. I’ve tested two ways of making the cylinder lenses (toroidal lens & cylinder object), no difference. I’ve tested a second source type (two-angle) and got the same result. I’ve also tested removing all elements, and the structure only appears with the cylindrical lenses.Any idea what could be causing this?

Is it possible to include the sequential option to ‘Scatter Rays” to the “Line/Edge Spread” analysis feature? I’m guessing the answer is yes since this is a geometric analysis. If so, this would be a feature request.Thank you,John

When I use the polarization ray tracing function of OpticStudio or the POLTRACE function of ZPL, I get parameters such as polarization ellipse and Jones vector. If I need to calculate parameters such as IPS, I need to get the Stokes vector. Is there any way to get the Stokes vector in OpticStudio?

Hi,I have a circular STL file with shapes in. I would like to use this as a mask in front of a simple telescope (I am using one of the example files (schmidt-cassesgrain.zmw)). I have entered a NSC surface and set the face to absorb, however, while the rays look correct on the 3D layout I cannot get the MTF or image simulation to work.Any help or advice would be very helpful!

Dear All,I am attempting to replicate a Dyson spectrometer design that was reported in this paper: https://www.mdpi.com/2304-6732/9/11/865 and I tried the design you see in the attached *.zar file. I introduced a fold mirror after the slit just to fold the beam.This the optical layout from the paper:and this is the my optical layout I attempted:  It is a known issue that the slit position is very close to the camera position in Dyson design. However, I could see that in the optical layout reported in the paper, there is quite some space between the slit entrance and the camera. To separate the two rays, I could adjust the grating grooves (by increasing it) but it will complicate the design etc. The grating grooves reported in the paper is 13 lines/mm and I have set it to 100 lines/mm (0.1 in the lens data editor) because it just gave me a reasonable design.My question: What could possibly went wrong in my attempt? How could I make that nice separation between the slit entrance and imag

Hello guys,  I am designing a wide-angle diffuser using micro-lens array (Light source: VCSEL array).The problem is the resulting shape in the polar diffuser.In my knowledge, the distortion of the MLA Diffuser should appear as a barrel.However, the result is pincushion distortion.When setting up the polar detector, is it possible to change the photometry ies type or other conditions?Sicerely

I am trying to tolerance a Zernike for irregularity. I noticed that for other rotationally symmetric shapes, you can use the TEZI operand to introduce irregularity tolerance. This converts the rotationally symmetric shape to a standard zernike surface and introduces the tolerances. But my design has a zernike surface already and I was wondering if there is a way to use the TEZI directly. If not, is there a work around to it? Extension of the above question : How do you tolerance any freeform surface (extended polynomial, chebyshev etc..) for irregularity? Does zemax have any inbuilt tolerance operand to do the same?Thanks in advance.

I would like to return the geometric (not RMS) spot radius in the merit function editor. I wasn’t able to locate this in the documentation. Thanks for any help,John

I would like to compare light sources to a perfect Lambertian source. This could be done by having a checkbox that makes a Lambertian distribution show up on the polar directivity plots. Similar to what is shown in the knowledge base article image, see below.Even better if it also showed a RMS deviation from the ideal Lambertian distribution source on the plot.https://support.zemax.com/hc/en-us/articles/1500005490001-Light-sources-used-in-illumination-design.  

Hi everyone!I am looking for the quickest and most efficient way of converting the surface data in Zernike Standard Sag form to Extended Polynomial. Any help is appreciated!Regards.

Hello everyone, When searching for affordable alternatives to produce a homogenous illumination, I came across a document from THORLABS called Multimode Fiber Beam Lab Fact. In Slide 7, they describe the spatial light distribution profile at the output of a multimode fiber as a function of the input source angle. Furthermore, they show that by having a small, 11 degree, input source angle, it is possible to flatten the spatial light distribution profile at the output. Here is a screenshot from Slide 7:I thought it would be interesting to model this light profile in OpticStudio. I’ve started to document my approach in this notebook, but for those who are not interested in the details, I made a Source DLL that mimics the super Gaussian profile documented by THORLABS. This is the result for a 200-um diameter core and 0.39 NA with the 11 degree input source angle:You can find my source code and the DLL in this repository, I’m also attaching an archive of a demonstration model, which will i

Hello,Is it possible to design a freeform surface on a grating ? Thank you for your answers

For a large NA optical system, the performance of the system needs to be analyzed through polarization ray tracing. I need to analyze transmittance apodization, diattenuation and phase retardation across the entire pupil range for each field of view, which constitute the Jones pupil. However, zemax doesn't seem to have a function for this purpose directly. I want to achieve this through Zemax Programming Language and passPOLTRACE Hx, Hy, Px, Py, wavelength, vec, surfImplement polarized ray tracing. But the problem is that the results returned by the keyword POLTRACE do not include transmittance apodization, diattenuation and phase delay.Is there any way I can achieve my goal?And, is there a way for zemax to directly implement Jones pupil? The polarized pupil function doesn't seem to serve my purpose. 

Может ли Земакс работать с частично поляризованным светом? Я создаю системы, использующие ПВО и неполяризованный свет, и теоретически  отраженный свет  должен стать частично поляризованным после ПВО. Но Хьюгенс PSF показывает, что свет не приобретает никакой поляризации. Почему это происходит?

Hello everyone.I analysed 5 systems. I obtained intensity distribution from Huygens PSF and summed it up for each of them. After that I multiplied them by data spacing squared and obtained 3.6*10^-9 for each system. What does this number mean?

I’m trying to run a tolerance analysis on how the beams from two different sources overlap in my optical system. Is there a method to quantify the overlap of my 2 beams. I tried looking into the string filters but cant find anything that would help. I would like to get filter the area where they overlap and extract any RMS spot size and centroid location.  

Hello,Does anyone have an easy way to export a wavefront map (from OpticStudio’s wavefront analysis) as a .dat file that can be loaded into Zygo’s Mx software? Ideally I would like to do this without using external software such as MatLab.Thank you!

Hello Community,I am trying to optimize a lens that comes after the STOP. When I try to optimize the lens for maximum performance and minimum distortion the STOP gets vignetted as the diameter of the lens is fixed. The clear semi diameter of this lens is fixed and already at its maximum and cannot be increased. The vignetting for the rays from the maximum field is in such a way that the rays from the top half of the STOP are completely avoided and the rays from the bottom half of STOP is only considered. How can this be controlled. Which operand can be used to make sure that at least some of the rays from the top half of the STOP are always used.  I cannot use the option “clear set vignetting” and set new vignetting factors as the initial vignetting values of the STOP cannot be changed. Please see the pictures attached below. Only the rays from the maximum field are shown in the layout.    

Hi Everyone,I try to implement off-axis prabolic mirror (Diameter 300 mm, focal length 1500 mm and off-axis angle ~10 deg [off-axis distance 262 mm]). In the classic way it is quite easy and well describedhttps://support.zemax.com/hc/en-us/articles/1500005486541-How-to-model-an-off-axis-parabolic-mirrorbut when I try use new feature in OS realease 21.3 I can’t achive good results at first time.Sandrine Auriol from Zemax team help me with my problem. So together we decide to create new topic. We think it will be helpful for other users.If we have a look at this sketch from the help file, the Off-axis Conic Freeform is defined in the new (x’,z’) coordinates:So we need to add the tilt -9.98 degrees. In the Off-Axis Conic Freeform, it is half this value.We add this angle as a fold mirror. This tilt is actually easy to calculate.The angle is = atan(sag(Yo)/Yo)Sag(Yo) = curvature * Y0^2 (no bottom term as it is a parabolic with a conic constant of -1)So angle = atan(curvature * Y0^2/Yo) = at