Is it possible for Zemax to input a measured Power Map. The Power Map has been measured on a NIMO TR1504. I would like to assess the difference between the best fit using zernike polynomial power map and the as measured Power Map.
The measured power map is a 2d array of dioptres power values and the x,y coordinates for each can be calculated from pixel number and pixel size.
I've done something similar to this using ZPL. The macro reads in all the data, then generates a line-by-line merit function with all the tabular values as CONS target values. Your Zemax-generated values are next. The macro then generates DIFF lines between your table values and Zemax-generated values. You're using Zemax as a 2D curve fitting routine, and it can do that very well.
Mike’s method works great.
The overall problem is that OpticStudio expects surface sag as input, and you have curvature data. I can see two approaches to using your data:
Outside of OpticStudio, or using ZPL or ZOS-API, integrate your curvature (power) data to get the surface sag. It’s not a simple integration as curvature uses the first and second derivatives of the sag. It’s possible that the makers of your mapping equipment have such a function.
Inside of OpticStudio, use a series of SCUR operands for each pixel location. Enter the measured curvature as the target of each operand, set a weight of 1, and use a Zernike or other freeform-ish surface to set the surface curvatures at each pixel location.
Remember power at any point is (n2-n1)C. For mirror surfaces n2=-n1 so the power is -2C.
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