Hi Folks,
I am trying to make a small project using two lenses as shown in figure below.
I have fixed lens and another movable lens which will go forward and backwards. its movement shall adjust how large is the laser beam on the wall.
it was a nightmare to align the lenses and maintain a certain distance between them.
I have two questions,
1- how can I maintain an accurate measurements between both lenses ex. 2mm ?
2- how to align the center of both lenses ?
is there special tools for that?
I was thinking about building a 3-D module for that but doesn't have any design in my mind that would make life easier...
