Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Laser rifle V.2

Reallifelaserguns

New member
Joined
Feb 21, 2019
Messages
16
Points
3
My new laser rifle burning newspapers. The red point is the aiming laser. The 3rd paper is too wet to catch on fire, but as you can see dry papers catch on fire almost immediately.

Video of the laser in action:
 



RedCowboy

Well-known member
Joined
Jul 10, 2015
Messages
8,815
Points
113
Nice packaging, is that a 20w tube ?
Next you need a beam expander that you can zoom to distance.

 

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
17,188
Points
113
Yikes! $450.00 for an "as is" beam expander, even if it is for a CO2 laser sounds like more questions should be asked before pulling the trigger on that one. Interesting CO2 potable build. We've seen a few of these, but they aren't that common. Nice job.
 

Encap

Well-known member
Joined
May 14, 2011
Messages
5,361
Points
113
Good Job. Nice result. Looks the part--the illusion was worth the effort. (y)
 

Anthony P

Well-known member
LPF Site Supporter
Joined
Oct 7, 2018
Messages
386
Points
63

Not $450.00
 

RedCowboy

Well-known member
Joined
Jul 10, 2015
Messages
8,815
Points
113

Not $450.00
Those are not made to zoom to distance, made for marking at a set distance. Maybe use the word " Adjustable " along with beam expander in your search and for co2 you will need an adjustable beam expander with ZnSe lenses as normal glass will absorb the energy and shatter.
 
Last edited:

Reallifelaserguns

New member
Joined
Feb 21, 2019
Messages
16
Points
3
I used 4 ZnSe plano convex lenses trying to make my own beam expander. But the amount of precision involved in making it work is very hard. Also I wonder if making a beam expander is even possible when using only plano convex lenses.
 

RedCowboy

Well-known member
Joined
Jul 10, 2015
Messages
8,815
Points
113
You need a concave 1st to expand your beam then a convex to focus it to it's tightest point at your target, the concave will be fixed ( stay put ) and your convex will move fore and aft to adjust your focal point.
 
Last edited:

Reallifelaserguns

New member
Joined
Feb 21, 2019
Messages
16
Points
3
You need a concave 1st to expand your beam then a convex to focus it to it's tightest point at your target, the concave will be fixed ( stay put ) and your convex will move fore and aft to adjust your focal point.
Thank you very much! I'll take a look into it.
 




Top