Reply To: Optic studio-zemax operand values are different from the plot (Genc and Denc)

[Elham Sarbazi]

Hi Ali,

The GENC operand in the MFE should provide the exact same results as computed by the Geometric Encircled Energy tool, as long as you set them up with the exact same parameters. 
If the system is a mixed mode system with NSC component embedded in a sequential model, then, many of the wavefront-based analysis tools may no longer work properly. So you’ll need to use geometric ray based analysis. And for the geometric encircled energy, you should not check “Multiply by Diffraction Limit”. 
In addition, because the GENC operand listed in the Merit function Editor does not provide a setting for the “Maximum Distance” computed, you’ll sometime see a small discrepancy. However, if you set the sampling very high, the discrepancy should be a very small.