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



Laser Pointer Store

Concave lens

Joined
Jul 18, 2008
Messages
36
Likes
0
Points
0
its just i read up you can make the beam the size of a hair, which is perfect for burning,
 

diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,447
Likes
1,321
Points
113
then you want the top one, a conex which focuses the beam down to a point, but it wont burn with 15mW ;D
 
Joined
Jul 18, 2008
Messages
36
Likes
0
Points
0
Yeah, ive got one of them, its just i was told the collimator makes it tiny, if you used two convex lenses that might be better
 

FireMyLaser

Well-known member
Joined
Jan 12, 2008
Messages
3,059
Likes
144
Points
63
Go to the dump and find an old camera. ;)

I'm not so sure about webcams, but disposable should work, or any other camera.
 

diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,447
Likes
1,321
Points
113
I use the lens assembly ( the focusing one ) from an old projector to focus my laser beam down, it burns like hell when I do, focuses it to a tiny point , only works if I shine it in the right end though :p
 

diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,447
Likes
1,321
Points
113
yeah, was an old philips, was a nightmare to open, didnt have the proper screw drivers you see  :-[ Theres loads of cool optics in them, theres 3 diffraction gratings, a huge beam splitter type thing, loads of polarized glass slides, some block green laser light really well, others block red, theres also loads of other lenses, and a few other cool things  :p
 

diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,447
Likes
1,321
Points
113
;D The projector still worked, it was just slightly 'wonky' at the edges, it was just one my dad had lying around his work so he brought it home for me, and I used it for a while for gaming, then thought what the hell lets take it apart :D
 

diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,447
Likes
1,321
Points
113
It was awesome, I had it on the floor pointing above my bed so I could lie in bed and look up while gaming :D It was awesome
 

diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,447
Likes
1,321
Points
113
I've got 4, two Romisen L-C030s / L-030 they are both the same, 1 Romisen L-A030 and a 35mW labby that does about 50-60mW, all from DX
 




Top