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Fifty diffraction gratings are about to be delivered to Ukraine. A warm thank to the private groups from Eastern Europe who realized the importance of these free, easy to use small devices.
Sorry, this entry is only available in Français.
Based on our experience on the design of the first version of lens cap for mobile phones, we have sought to remove
This document explains, step by step, how to make a small equipment that will adapt a diffraction grating on the objective of your mobile phone.