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Thread: SMC coruse, lens surfacing question.

  1. #1
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    SMC coruse, lens surfacing question.

    Hi all,

    Got a question, looked over my notes and i cant seem to find an example question to follow.

    1. Given a ring tool cutter with a diamter of 50mm and a cutting head diamater of 8mm. If rotated 12 degrees, what surface power will this rotation create if the machine is calibrated for 1.523 and the media is also 1.523.

    2. What angle would the head have to be angled at to produce the same powers as in Q1 but using a high index glass where n=1.7?

  2. #2
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    If you are generating a concave surface.


    or


    where







  3. #3
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    cheers

    Thanks very much

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