Thank you so much, Allie! That's all I needed for now.
Allie, I think I was typing my response at the same time as you! Thank you, that's exactly what I was looking for. Looking forward to learning more about how the glasses are chosen for MIL fitting, but your response will get me what I need for now. You have a great weekend, and a Happy Halloween, Bella
Thanks for your answer, David. I should clarify, though. If you look up MIL Number Glasses in the Zemax documentation, you can see how they're described as a refractive index and Abbe number. The example I gave above: 377571. This number shakes out to a refractive index at 588 nm of 1.377 with Abbe number of 57.1. My guess for how Zemax churns this value is it puts a pin in the glass map and tries to find the closest match (this map doesn't even go down to 1.377 for index, but you get the idea): My guess is that they then use the Sellmeier (or Cauchy, or whatever) fit to that glass's data to estimate what your material will act like at whatever specific wavelength you want to use. My use case here is that I would like to plot the dispersion curve they're getting from the MIL number from my model, or at least be able to access the refractive index they're assuming for these materials at the wavelengths I'm interested in. Further, I am wondering if
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