Beam shape visualisation with foam


#1

This is a quick hack to visualise the real shape of the beam, using LD33 Plastazone foam, which just goes away when it sees a sniff of a beam.

The first test was with the cone still fitted. I was expecting a much more conical cut. This would actually be a usable kerf width for some projects!

https://photos.app.goo.gl/j3jkZzHTjd4sCTQG6

The second test was without the cone, so the foam could be much closer to the lens. Much more of the beam taper is visible:
https://photos.app.goo.gl/kdTqPdAAA3jgHpRw8


#2

Was looking about and found this on the II-VI lens website

Aren’t lenses fascinating.

Dominic


#3

Yes. Lenses are fancy.