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FrozenGate by Avery

Just ordered a Lazerer Rifle445 nm-1W

Completely normal when you completely defocus the laser.

Bubbles are imperfections in the die or optics.
 





InfinitusEquitas said:
Completely normal when you completely defocus the laser.

Bubbles are imperfections in the die or optics.
Click to expand...

if you had a higher quality lens, say glass AR coated or G2, would there still be imperfections such as these?
or would there be minimal "bubbles"?
:thanks:
 
^^^You would still see some artifacts. Defocused you would see a rectangle with somewhat rounded sides, wish splash around that.

A better lens is always... better... but you will find imperfections like that with all lasers.

Basically with an aixiz or g1, you will see a long rectangular shape to the dot. Sometimes a larger much rectangle around that.

Don't worry about it.

Here, Dave did a very nice sticky on this a while back: http://laserpointerforums.com/f65/there-something-wrong-my-beam-spot-59400.html
 
The 445 diode creates a rectangular shaped dot because it's a multimode diode, and the imperfections appear from my experience to be contaminants on the lens, possibly from being touched while it was installed...
 
Ra1nfade said:
The 445 diode creates a rectangular shaped dot because it's a multimode diode, and the imperfections appear from my experience to be contaminants on the lens, possibly from being touched while it was installed...
Click to expand...

I don't think it's only from the diode window/lens, or from being touched. If that were the case a decanned diode with a perfect aixiz or g1 lens would produce an ideal rectagle. Some of the imperfection has to come from the die.
 
Last edited:
Some of the cloud around the 445 is from imperfection, the lens I was referring to was the collimating lens :p
 
bubbles can also mean you need to clean your lens happens alot clean it with a qtip that's how i do it
 
bennett326 said:
bubbles can also mean you need to clean your lens happens alot clean it with a qtip that's how i do it
Click to expand...

Using a qtip is not a good idea for cleaning lenses. Depending on the coating you can damage it.

Qtips also leave behind fibers, and using only a qtip does not remove contaminants, but just pushes them around.

A lens cleaning kit is best. If that's not at hand, rubbing alcohol, or acetone, and a lint free mircrofiber cloth would work best.
 
Well i try to clean the lens with a small piece of microfibre with special degreaser for electronic, and after dry with clean air, and i go to ignit the rifle, but bubbles are here again...:yabbem:
Not a problem of dirt :thinking: then surely imperfections...
 
Patoche91 said:
Well i try to clean the lens with a small piece of microfibre with special degreaser for electronic, and after dry with clean air, and i go to ignit the rifle, but bubbles are here again...:yabbem:
Not a problem of dirt :thinking: then surely imperfections...
Click to expand...

Focus it to infinity and don't worry about it:p
 
InfinitusEquitas said:
Using a qtip is not a good idea for cleaning lenses. Depending on the coating you can damage it.

Qtips also leave behind fibers, and using only a qtip does not remove contaminants, but just pushes them around.

A lens cleaning kit is best. If that's not at hand, rubbing alcohol, or acetone, and a lint free mircrofiber cloth would work best.
Click to expand...

ok thanks for the advice but ive seen allot of people recommend qtip and acetone. looks like i need to invest in a lens cleaning kit any recommendations?
 
My lens cleaning kit consists of 91% isopropyl alcohol and a whole bunch of microfiber lens cleaning cloths I picked up a long while back on meritline, or dx, to me honest I don't remember:)
 
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