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Hmmm...in return, I can tell you that any lens that claims a spatial
frequency transfer of 3000 lines per mm (the figure you mentioned 3 or 4
weeks ago)
is representing that it can transmit information on a spatial ( transverse)
wavelength of 333 nanometers, using visible light in the wavelength range
400 to 700 nanometers.
Quite a trick!
You have a reference, of course?
Sincerely
brian whatcott <inet@intellisys.net>
Altus OK