3 ms·
My "suggestion" is not quite a suggestion. It is actually how galvos for big laser projectors are driven! I'm told that the position feedback is not really some
by exmadscientist 6y ago
My "suggestion" is not quite a suggestion. It is actually how galvos for big laser projectors are driven! I'm told that the position feedback is not really something you can get away without, though I haven't tried myself.
Galvos are not quite predictable enough devices that you can usefully model them. The resonant frequencies to be filtered out have to be tuned individually for each one. (At least, for the projector I'm familiar with, which is one of the very big, very nice, very expensive ones. They're low-volume and hand-tuned.)
- dreamcompiler 6y agoDidn't know this about the prepackaged projectors. My experience is with low-end, cobble-it-together-yourself galvos where the highest quality output is not a factor. Thanks.
- Animats 6y agoYes, here's what optical bench quality galvos look like and cost. [1] My comment on the drive electronics was simply about how to fix the drive circuit cheaply so it had enough current capacity to not overheat and burn out. [1] https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=3770 https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=37...