Looking into getting a Viper Series 980nm 400mW IR Laser Pointer and my biggest concern is the spread of the beam.
From what I'm understanding is to get a farther "focus" point I could buy a expander which would multiply the distance at which the focus point is.
But I wonder if I can address the problem from a different angle. IE can I change the collimation tube (the collimation lens) to achieve better, and quite possibly far better results? I'm figuring Light -> Base laser lens (sets the focus point) -> expander.
So if I can change said lens would it be logical? Or do people go beam expanders purely because either changing the first lens has little to no effect, or the price difference is just logical to add more glass to the laser.
Thanks in advance,
Lostman
PS. if my stupidity on the subject of laser physics is why I've over looked a major concept as to why I shouldn't even ask these questions, just point it out!
From what I'm understanding is to get a farther "focus" point I could buy a expander which would multiply the distance at which the focus point is.
But I wonder if I can address the problem from a different angle. IE can I change the collimation tube (the collimation lens) to achieve better, and quite possibly far better results? I'm figuring Light -> Base laser lens (sets the focus point) -> expander.
So if I can change said lens would it be logical? Or do people go beam expanders purely because either changing the first lens has little to no effect, or the price difference is just logical to add more glass to the laser.
Thanks in advance,
Lostman
PS. if my stupidity on the subject of laser physics is why I've over looked a major concept as to why I shouldn't even ask these questions, just point it out!