Re: lens 'recipes'

Richard J Kinch <kinch@xxxxxxxxxxx> wrote:

Jim Klein writes:

It would be best to build your own calibrated against either an
optical flat or a very flat metal reference plate.

My design:

http://www.truetex.com/spherometers.htm

Very nice. A truly useful entry on the internet.

Jim Klein
James E. Klein
jameseklein@xxxxxxxxxxxxx

Engineering Calculations
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