445nm Firefly

[Firefly]

Hi all
i build blue laser but the dot is a big rectangular not like a true ray
http://cjoint.com/?hzolV63Wth


the module with glass lens G1
445nm 405nm Laser Module Housing- no lens 10.5 mm dia. - eBay (item 380252966243 end time Jul-28-10 23:46:36 PDT)

Help me!!!

 

[DJNY]

Nothing to worry about, even CNI´s PGL-III-A has a rectangle output
Spartan Series 1W Blue Handheld Laser, Rectangle Beam :: Blue Handheld Laser ----- 447nm Laser ----- Spartan Series Lasers :: Handheld Lasers :: Dragon Lasers
Member -dr lava- is selling correction optics, look for them.

 

[Firefly]

but the rectangular output is very big maybe 5 cm length and 2 cm width the distance on the pic between my hand and the wall is under 1 meter it's not a laser it's a flashlight :cryyy:

 

[Grix]

Have you focused it properly? Are the diode pushed all the way into the module?

 

[Firefly]

I screwed through, and see the link http://cjoint.com/?hzoZxRNhKw

 

[lasersbee]

It seems that you are not focusing the beam correctly..
or you are not getting the full beam profile through your
lens...

I get a beam that looks like this ------ and
it measures 2mm X 35mm when focused at 35 feet..


Jerry

 

[Firefly]

i can't focus more because is fully screwed http://cjoint.com/?hzpwqErymB if i unscrew the dot is much big

 

[laserdan]

Try flipping the lens around so the opposite end is facing out.

When I powered up my first module using a 405nm Aixiz lens, I had the same issue.
Upon flipping my lens around, the beam became drastically more focusable.

From my own experience, it seems the "flatter" end of the lens faces the diode and the "rounder" end faces out.

 

[daguin]

If you are using the 405-G-1 lens and you have the spring under the lens, remove it. The lens needs to be closer to the diode than the spring allows. You can either cut the spring in 1/2 or you can use a single wrap of teflon tape on the lens nut to make it more "snug."

If that doesn't work, either your diode is not pressed all the way into the pocket or you have a "Sure" brand module that does not have the threading all the way to the bottom, preventing the lens from getting close enough.

Peace,
dave

 

[Firefly]

No spring inside, http://cjoint.com/?hzvly2MJhm

 

[Firefly]

thank to all, Yeah Daguin you right i find the gray cylinder this give me more pressed in the module
http://cjoint.com/?hzwfqFxNHz

i focused a clean rectangular blue but is too much large, how i can have a really dot like a true laser ?

 

[Firefly]

here the blue rectangular at 3m http://cjoint.com/?hzwvaNqgr4
is 10.5cm x 6cm

 

[aryntha]

That STILL looks quite unfocused... Something else is going on here Firefly.. Something with your lens isn't right. It still isn't focusing as much as it should... Have you tried turning the lens around?

 

[Firefly]

it's the best focus that lens give

 

[ped]

Yes but have you took the glass lens out of the housing, turned it round and put it back in? , I , like others have had this problem, and thats what it was.

 

[Firefly]

Yes but have you took the glass lens out of the housing, turned it round and put it back in? , I , like others have had this problem, and thats what it was.

the lens is fixed on this (c) CJoint.com, 2008 and I have not removed the lens of the "screw"

when i screw or unscrew the spot disappears