Last Updated: Oct 07, 2016     Views: 26

I'm sorry for the long delay in answering your question. I have checked the MacBeth Evans archive and found blueprints for fresnel lenses but not for first order. I can scan and send you copies of the ones I found (mostly 4th and 5th order, some bivalve, also, I believe).  If that would be useful to you, let me know and I will send that out tomorrow. I can also continue to look, if only a blueprint for a 1st order fresnel lens is of interest. Again, apologies for the inexcusably long time in getting back to you.



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