Diodo laser 1 Watt Sharp GH05C01B9G in modulo rame 12 mm con obiettivo 2-E - 520 nm

Because the Sharp GH05C01B9G laser diode is a multi-mode diode you will always get a rectangle as opposed to a dot. This is a characteristic of all multi-mode laser diodes. You want to focus it so you have the cleanest and thinnest line possible.

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