How can I calculate exact center thicknessof a lens? Available datas are exact front curve, approximate back curve, lens power, lens index, tool index, diameter and edge thickness.
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How can I calculate exact center thicknessof a lens? Available datas are exact front curve, approximate back curve, lens power, lens index, tool index, diameter and edge thickness.
Google lens thickness calculator and go to the opticampus website that pops up. Here is a url http://64.50.176.246/tools/thickness.php
Thanks for the reply. I had checked the website earlier . But what I need is the formula for measuring accurate thickness.Quote:
Originally Posted by bta89
Quote:
Originally Posted by gsmahesh
I learned in the old days how to measure a lens thickness, one used the gauge and not a formula.