Use this space to learn more about your software!
Nonsquanial GRIN lens modeling
Hi, I am trying to develop a GRIN lens model for my optical design. However, the profile of the beam output is not correct. I would like to learn how I can fix it. Below is a screenshot of the result I have from Zemax 13. As we can see, the beam only focuses on one axis (y-axis). The width in the z-axis reminds the same. I tried to run the simulation using OpticStudio 22.3, but the result reminds the same. I followed this thread to start my work. The GRIN lens I use is from Edmund #64-541. (https://www.edmundoptics.com/p/10mm-dia-810nm-dwl-00mm-wd-nir-coated-grin-lens/19253/) I imported the .step file downloaded from the website and assigned the index based on what I got from the sequential mode. I feel this issue comes from the .step file. I tried to draw a solid cylinder with 1 mm in diameter and 2.38 mm in length (the same as the dimension of the GRIN lens), but it did not work… Maybe I should not draw a solid cylinder directly. Or it was actually caused by other issues.
NSC Surface to object
I’m trying to model an anamorphic lens in non-sequential mode. The lens is planar on the incident side, and aspherical on the output side, with different asphere equations for x and y coordinates. The ‘Aspheric Surface 2’ seems to offer what I need in terms of the ability to specify different conic coefficients for x and y, but I cannot figure out how to create a volume from this. The format used in sequential mode, where the surface is preceded by a standard surface where the material is specified doesn’t work.Presumably the solution will be the same for any of the surface geometries offered in NSC mode, but all the examples and knowledgebase articles I can find apply mirror coatings to these surfaces, so they are modelled as infinitely thin shells.Any help would be greatly appreciated.
CodeV to Zemax
Hi, A colleague converted a CodeV file to a Zemax file. I am a Zemax user, the file won’t trace rays in Zemax . I get an error statement - “error in target, can’t lunch rays”. I went ahead to set vignetting in the field editor and try to trace rays again and now I get the statement - “error in target, missed surface 52”. since rays can’t be traced, no analysis can be done. What can I do to fix these errors? could this be a conversion problem from CodeV to Zemax ? Assuming the problem is from the conversion, how do I fix this? Thank you.
License Renew (No response from academic Zemax support)
Hello, Hello, My license has expired and I send an email to academic Zemax Support Team ( firstname.lastname@example.org ) a request to renew it, but I didn't receive any message.Could you help me to renew it, please?For previous my license information is below: License Number: L125433 Product: Premium Premium Subscription SUL License Expiration: Feb 21, 2023ฺBest Regards,Igor PetrucciUniversidade Federal de Minas Gerais (UFMG)
entrance/exit pupil of lenses
Hi,When reading lens parameters, I come across entrance pupil size and scan angles. Although, theoretically I know the definition of entrance/exit pupil but I am struggle with its practical application. The same with the field size parameters stated on the tube lens description. I will be grateful for some straight language explanation. Regards,Marzanna
Non-Sequential Combining a group of objects into One
Hello, I currently have a set of objects that I use fairly often in my models and instead of me creating them every time with the desired spacings, thicknesses, Etc.. I wanted to know if there is a way to create them once and somehow combine them into one. E.G. Source diode with a specific divergence angle and a rectangular volume with a specific material, X-width, Y-Width and thickness that is some distance form the source diode. Can I package these two objects into one that I can import to my different models? Thanks
objective entrance pupil
Hi,In my scanning laser setup, I use a paraxial lens as an objective f=10 mm, 20x. The entrance pupil (EP) of objective is 10 mm. How to add front and back f of the objective together with objective back focal plane ( which is the entrance pupil). Also, in “the goal” simulation ( at the bottom) scanning rays are restricted by the objective BFP, and it does not work in my simulation.Regards,Marzanna
Diffractive surface ray direction calculation
I looked at the following article.How diffractive surfaces are modeled in OpticStudio – Knowledgebase (zemax.com)I am confused about how the direction is calculated after determining the phase profile. The article says the cosine of the derivative of the phase difference is added. But that difference is not between -1 and 1 in most cases. For example, if wavelength=400, p=1, p^2 coeff = 1, the change of direction is 400/(2pi) > 1. Can someone explain where I am going wrong here?
Head up display design tools
I would like to design a HUD projector to work with a windscreen. I am wondering what the best method for doing this would be, whether to use OpticStudio or Speos. I am familiar with Zemax but have never used it for this type of application. Because I don’t even know where the HUD optics will be located in space, or what their form will be, I need a tool that allows me to define a geometry to give me roughly what I want before optimising. Unsure as to whether Zemax is the best package for that.
Cylindrical Zernike Surface
Hello,Is there a way to simulate the Zernike polynomials on a cylindrical lens? I have a cylindrical lens that is quite long, and with some Zernike terms, it gives a weird shape.This is the basic cylindrical array: But with a Zernike term, it becomes: It seems that the Zernike is applied in X and Y, but I only want it in one of these directions.
How do I set the aperture of front surface of Grid Sag lens in non-sequential editor
Dear all, I am trying to draw a Grid Sag lens in non-sequential mode. The front surface is a conic surface and the back surface is defined by a GRD file. I saw that I can define the aperture of back surface by X- and Y- half widths. However, the resulting lens looks like truncated, which reminds me of the situation in sequential editor where I didn’t set up the aperture of front surface properly. See the screenshots below. Any one has any idea how I can set the aperture of the front surface in Grid Sag lens? @David Nguyen @Csilla Timar-Fulep Regards,Jiang
How to create a combined prism in NSC
Hi, I am very new to ZEMAX, may I know how can I build a combined polygon in ZEMAX in NSC mode?For example, I need a combination of two types of material. The 1 and 3 sections use the same material but with different dimension, the second section uses another type of material.
"Gradient 4" Surface Type
Dear Community,I am trying to analyze my system (combination of primary and secondary mirror) for a given temperature gradient. For that I have setup my LDE as shown in the below screenshot… "Gradient 4" Surface is covering the whole system (PM and SM). Since I am working in Sequential mode. I have couple of questions…Is LDE shown in the screenshot is correct if I want to study the effect of temperature gradient from Secondary mirror to Primary mirror (By changing Nx1 and Nx2 Value in Gradient 4 row focus spot shape is varying)? Will the same temperature gradient be applied to the primary and secondary mirror as well, or it is restricted to the surrounding medium only?Thanks.
Already have an account? Login
Enter your username or e-mail address. We'll send you an e-mail with instructions to reset your password.