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Thread: Sagital formula ???

  1. #1
    OptiBoard Apprentice
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    Confused Sagital formula ???

    hi all

    My question is how do i calculate the front saggital and back sagital of a SV lens?

    What parameters do i need to calculate them?

    i know how to calculate the front radius and initial CT what else do i need to know to get the front sagital and back sagital?

    thanks mike

  2. #2
    Master OptiBoarder
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    Mike,

    Do yourself a favor and pick up a copy of Optical Formulas Tutorial, by Stoner, Perkins, Ferguson.

    It is packed with all the formulas that you may need, it explains how to figure them out, and is a valuable tool in any optical professionals bag.

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