Nice! I've got to make one of these. I'm hoping keeping the ratios about the same will do the trick.
I've been experimenting with different shapes myself, and wondering about other ways of using the diffraction properties and intra/extra focus effects to best advantage, that looks like a very intelligent way to do so.
My fav mask now consist of two slits at right angles to each other.
-------------------- "Ignorant people think it's the noise which fighting cats make that is so aggravating, but it ain't so; it's the sickening grammar they use." Mark Twain
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Re: Revolutionary new way of focusing! No less!
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