Photomasks as optics testing tool

Everything relating to microscopy hardware: Objectives, eyepieces, lamps and more.
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Joined: Mon Feb 22, 2021 7:44 pm
Location: Estonia/EU

Photomasks as optics testing tool

#1 Post by tpruuden » Sat Jan 28, 2023 5:24 pm

I stumbled recently on this and similar items on Ebay:

Seems to be quite decent way to evaluate microscope optics, I assume those are manufactured by electron litography.

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