Aspheric Terms – Insert Lens dialog

Question 2

I am entering aspheric terms in the Insert Lens Element dialog, how do the parameters correspond to the Sag Equation (as shown in the TracePro User’s Manual and Help)?

Synopsis

Aspheric Terms – Insert Lens dialog

Solution

The relationship between the variables in the sag equation in the User’s Manual (Lens Element section on Page 2.8) and Help (Asphere) to the variables in the Insert Lens Element dialog is as follows:

  • C (curvature) [equation] = 1/R (radius) [dialog]
  • K (conic constant) [equation] = Conic [dialog]
  • Aj terms [equation] = R1, R2, etc terms in the aspheric tab [dialog]

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