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



Laser Pointer Store

Cajunlasers 400mW 532nm (Pics) EDIT: REMOVED THE WATERPROOFING LENS

Joe Mo

New member
Joined
Jan 4, 2012
Messages
320
Likes
17
Points
0
Re: Cajunlasers 400mW 532nm (Pics) EDIT: WITH LENS MOD(SORT OF) - on page 2

My lens is a little dirty, I need to clean it. I have to go get some canned air to keep on hand now. BEWARE of lens scratches/dust if you remove the waterproofing lens!
 

2100

New member
Joined
Apr 9, 2011
Messages
107
Likes
0
Points
0
Very nice. It does show a noticeable increase on the lux meter after taking it out. It's quite slight, maybe 10% at most. It's not like LEDs which is much more stable.

If yours doesn't focus to infinity after taking it out, just make sure that center silver thingy holding the lens is not completely screwed in, probably just half or 1 full turn would do it. So the lens is actually closer to the diode than before.

I am not going to do any close-up burning with this (that belongs to the 445 league), so no issue with the IR.

The original lens is not an IR filter anyway....i just viewed it with the camera with a IR remote. I broke my O-like 100mW with beam expander, i mean i dropped it and the brass "pill" with the crystal dropped out. Purchased some silicone based thermal glue from dealextreme and so i need to stick it back in. I guess it's a blessing because it's built in such a way that it can easily break.... so that i can easily glue it back in. If it were a solid contraption/module with no way to access the front lens/crystal assembly, i am sure the laser would be a straight toss into a the bin.
Alignment shouldn't be an issue, just need some patience and steady hands. Should be 100% new (originally it was just a wee bit crooked so with the expander lens defocused, i get some "coma". So i get to collimate it now, like in astronomy in telescope.

The broken laser is cool, it is pretty bright on the camera with 1064nm radiation, even though it is unfocused.
 
Last edited:

2100

New member
Joined
Apr 9, 2011
Messages
107
Likes
0
Points
0
BTW, someone mentioned to use a washer in place of the lens to make up for the thickness difference. What i do in HIDs (to focus the bulbs because sometimes it is not easy to get the correct sized washers) is to use a small piece of copper wire flashioned like a ring, actually half of that works too.

I guess in this application which has next to no heat, rubber bands can do as well.
 




Top