Re: Incorrect Seidel aberration calculations in lens design codes

Why would you want this, Al?

I avoid the use of the A2 term in the ZEMAX asphere polynomial because it's
non-standard. Its use makes it difficult to go between CodeV and ZEMAX and I
suspect most diamond point turning shops don't have their machines
programmed to handle the A2 term.

In addition, I've seen many different formulations of the Seidel aberrations
which include the A4 term, but I've never seen one which includes the A2
term.

James R (Jim) Lynch III


.

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