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John.Hygelund
Fully Spectral
John.HygelundFully Spectral
asked in Got a question?
Chromatic Focal Shift Design Challenge

A prism sensor is designed to image concurrent visible light and near infrared with  1mm of chromatic focal shift between green and NIR using a 1mm z offset for the separate NIR sensor. The significant chromatic focal shift comes from an endoscope. A focal length adapter is being designed to work with the same prism sensor but without the endoscope. Diffraction limited performance can be achieved with 3 elements and 50mm length. The problem is that no matter how many elements I try, I can’t “inject” the needed 1mm of chromatic focal shift without significantly degrading image quality. I designed a doublet that has the needed focal shift, but when I used it in the system the other elements correct the shift. Am I trying to do something impossible? Can anyone suggest a reference that can help me more fundamentally understand these counter acting design objectives? Thank you, John

5843
John.Hygelund
Fully Spectral
4 years ago
M
Martin.JahnMonochrome
asked in Got a question?
Path analysis and bulk scattering with wavelength shift

Hello, I'm using Zemax OpticStudio 18.4.1 Premium in the non-sequential mode. My optical system consists of a light source (source radial) with 2 wavelengths and 1e5 beams, 2 detectors (rectangular) and a bulk scatterer (volume physics -> angle scattering) with wavelength shift. So far it is working as I would expect it. But when it comes to ray analysis there are some, at least to me, miraculous things happening. I saved a ray file (polarization, scattering and ray splitting on) and tried to use filter strings in the path analysis window. At first sight it seemed to work but only on the first sight. For example, I tried to get only the beams with wavelength shift. So I used 'X_WAVESHIFT(1,2)' and I got a result. In addition I tried 'X_WAVESHIFT(1,2) & H9' (Object 9 is the one with the bulk scattering properties; the only one in the system) and I got a different result (smaller power). How is that possible? The same thing happens if I use the strings directly in the detector wi

2849
S
Luminary
4 years ago
V
Victor.Haase-CoelhoMonochrome
asked in ZOS-API
How do I insert an NS component as a surface in the LDE using the API?

70
V
4 years ago
A
Aditi.DigheMonochrome
asked in Got a question?
How do I vary the particle density in volume physics?

I am running fluorescence simulations on a liquid test sample, with a custom detector object. I am currently modelling fluorescence using Volume Physics Tab-> Phosphors and Fluorescence Radio Button -> Standard model (No Mie Scattering). I need to vary the particle density over a range, and save the power at the detector as a function of the particle density. How could I vary the particle density as well as uncheck mie scattering using a macro? Also, is there a way to visualize the detector data for a custom object made to be a detector? Thanks, Aditi  

1355
A
4 years ago
D
DusanInfrared
asked in Got a question?
ISO Drawing Problem

Hello After having opened a lens file I sometimes want to check one or the other ISO drawing, which had been created with this file in the past. I proceed as follows: in the GENERAL Tab I click LOAD, select the ISO drawing of interest and after it has opened I click APPLY. Most of the tolerances appear correct but the shape of the lens not. OK, then I go to the GENERAL tab again and select the correct start surface for that lens. Now the shape looks better BUT - the 2nd radius of curvature flipped from plus to minus. So I now have a plano-concave instead of a plano-convex lens... Of course, this can be corrected by applying "Reset from LDE" but now my manually defined AR coating for that surface, which was not input in LDE, disappears...Manually defined coating was also the reason for unclicking "Automatic" in the associated surface tab. Anybody with similar experience? Best regards, Dusan

261
Angel Morales
En-Lightened
5 years ago

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