Gas pressure effect on lens to affect focus

Discuss laser machine here freely.

Moderator: baker

Post Reply
Robertlago
Posts: 1
Joined: Sun Jun 28, 2015 8:32 am

Gas pressure effect on lens to affect focus

Post by Robertlago »

Just food for thought -
Has anyone tested or run the numbers to see how far a lens might deflect under high gas pressure?
And, how far would that deflection move the focus point?

I wonder if that would help explain some of the rules of thumb regarding focus height when cutting various materials.
Seems like most materials that 'want' a low focus are also being cut at high pressure.

Obviously, lens diameter and thickness would affect the focus change at a given pressure.

Regards
Robertlago
Post Reply