Recherche de galvanomètres

Hello!
 
Here are attached the powerpoint (hope you'll understand a bit of french) we're gonna show to our teachers and a picture of the whole system working.
Yesterday when we were showing our project we had a response time of 2.6ms because our power supply wasn't powerful enough.
Because of the lack of power we didn't have straight lines, even if our galvo control was fine (we had better curves than the ones showed in the powerpoint).
You will see in the powerpoint that we were projecting moving 3D shapes (picture of a "E" in the powerpoint).
I'll try to have better pictures of our displayed shape because in the ones i gave you the camera obturation time was either too long (blurry shape) or too short (only a few lines).
 
Thanks a lot for your help, without you it would have been an impossible mission. It was really hard to make the whole system work in only 2 weeks and a half but thanks to your help we managed to make it work!!