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03-22-2008, 01:41 AM #1
 Class 2 Laser Join Date: Dec 2007 Posts: 309 Rep Power: 16
cbrian4
Class 2 Laser

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Divergance problem

Well i received my rma'd x125 laser about a week ago and i am able to pop balloons up to 17 feet away but when i tried matches, i can't light them from more than a foot and a half away. This struck me as abnormal considering that most x100's can light matches from about 3 feet and my laser is an x125. Well i did several divergence tests using pseudo's calculator, and found the divergence to be at least 2 mRad. My most accurate measurements were .0625inches at 1 foot and exactly .25 inches at 8 feet. I have already returned one laser to nova, should i contact them again?

03-22-2008, 01:46 AM #2
 Class 3B Laser Join Date: Mar 2006 Location: Utah Posts: 3,859 Rep Power: 1427
Razako
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Re: Divergance problem

Quote:
 Originally Posted by cbrian4 Well i received my rma'd x125 laser about a week ago and i am able to pop balloons up to 17 feet away but when i tried matches, i can't light them from more than a foot and a half away. This struck me as abnormal considering that most x100's can light matches from about 3 feet and my laser is an x125. Well i did several divergence tests using pseudo's calculator, and found the divergence to be at least 2 mRad. My most accurate measurements were .0625inches at 1 foot and exactly .25 inches at 8 feet. I have already returned one laser to nova, should i contact them again?
Are you sure you didn't mess up the divergence calculation? If it can pop a balloon 17 feet away it can't be that bad. Try using other matches. Some matches just suck.
__________________
700mw 405nm Sanwu Challenger(782mw peak 730ish mw average)
Sanwu Spiker Series 3W 445nm
2W O-like 450nm(2.2W average/2.25W peak) and Ebay 450nm THOR M II laser(1600mw average/1700 mw peak)
1.4W Jetlasers PL-E Pro 462nm(average 1490mw)
5.05W 465nm build by AlienLaser and 3.5W 465nm Jetlasers PL-E pro.
50mw 515nm challenger(85mw average) and 5-30mw penlaser
1W 520nm Sanwu Spiker series with beam expander
800mw 532nm Jetlasers PL-E Pro (850mw average, 988 mw peak) and 450mw laserglow Hercules with X10DR beam expander
8mw
561nm project box build(8-9mw average 10 mw peak)
589nm Dragon Lasers Spartan 50(51mw average/70mw peak)
593.5nm 2-5mw CNI penlaser(2-3mw average)
638nm Sanwu Spiker series(860mw average) and 500mw O-like 638nm pointer
639nm Sanwu Silver Series Tribeam(1700mw average/1800mwpeak)
1W 650nm Jetlasers PL-E Pro(1038mw average 1087mw peak)
671nm 100mw Red DPSS labby from LillyElectronics
685nm box pointer with laserlands 15mw module.

Meters:
Laserbee 3.7W usb LPM

03-22-2008, 01:53 AM #3
 Class 2 Laser Join Date: Dec 2007 Posts: 309 Rep Power: 16
cbrian4
Class 2 Laser

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Posts: 309
Rep Power: 16
Re: Divergance problem

i did multiple calculations one at 30 feet measured around .75 inches, which matches the numbers calculated from the measurements in my first post. Plus im using diamond matches which, im pretty sure are quality matches.

03-22-2008, 01:57 AM #4
 Class 3B Laser Join Date: Mar 2006 Location: Utah Posts: 3,859 Rep Power: 1427
Razako
Class 3B Laser

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Re: Divergance problem

Quote:
 Originally Posted by cbrian4 i did multiple calculations one at 30 feet measured around .75 inches, which matches the numbers calculated from the measurements in my first post. Plus im using diamond matches which, im pretty sure are quality matches.
Looks like it's time for another RMA
__________________
700mw 405nm Sanwu Challenger(782mw peak 730ish mw average)
Sanwu Spiker Series 3W 445nm
2W O-like 450nm(2.2W average/2.25W peak) and Ebay 450nm THOR M II laser(1600mw average/1700 mw peak)
1.4W Jetlasers PL-E Pro 462nm(average 1490mw)
5.05W 465nm build by AlienLaser and 3.5W 465nm Jetlasers PL-E pro.
50mw 515nm challenger(85mw average) and 5-30mw penlaser
1W 520nm Sanwu Spiker series with beam expander
800mw 532nm Jetlasers PL-E Pro (850mw average, 988 mw peak) and 450mw laserglow Hercules with X10DR beam expander
8mw
561nm project box build(8-9mw average 10 mw peak)
589nm Dragon Lasers Spartan 50(51mw average/70mw peak)
593.5nm 2-5mw CNI penlaser(2-3mw average)
638nm Sanwu Spiker series(860mw average) and 500mw O-like 638nm pointer
639nm Sanwu Silver Series Tribeam(1700mw average/1800mwpeak)
1W 650nm Jetlasers PL-E Pro(1038mw average 1087mw peak)
671nm 100mw Red DPSS labby from LillyElectronics
685nm box pointer with laserlands 15mw module.

Meters:
Laserbee 3.7W usb LPM

03-22-2008, 02:11 AM #5
 Class 3B Laser Join Date: Jan 2008 Location: Sweden Posts: 3,042 Rep Power: 400
FireMyLaser
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Re: Divergance problem

cbrian4, did you see my thread?
http://www.laserpointerforums.com/fo...num=1206043572
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03-22-2008, 03:12 AM #6
 Class 3B Laser Join Date: Oct 2007 Posts: 2,631 Rep Power: 142
amkdeath
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Re: Divergance problem

would this help?

Quote:
 Originally Posted by murrat [quote author=FireMyLaser link=1206043572/0#0 date=1206043572]I got it today with the goggles . I must say that it is a really elegant laser. It's bright, looks good and feels nice. Peak output power: 143.9mw Average output power: 140.7mw, Novas measurement. But the dot is about 25mm in diameter at 15 meters :-/. I calculated that it is 2.8mRad (did I make that right?) by using pseudonomen137's mRad calculator (good one there ). Nova's specs say <1.2mRad. I'm a bit concerned about it. What do you guys and gals think?
I think your calculation is wrong.
As the beam diameter is 1mm at the aperture and 25mm at 15meters the calculation would be;

Not so bad for a CNI.
Just try to pop a balloon. If you can pop a balloon (black one please) from 3meters do not send it back.
Just keep it and play all day

[/quote]
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03-22-2008, 04:09 AM #7
 Class 2 Laser Join Date: Dec 2007 Posts: 309 Rep Power: 16
cbrian4
Class 2 Laser

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Posts: 309
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Re: Divergance problem

Has anyone ever had to rma a nova laser twice?

03-22-2008, 04:11 AM #8
 Class 3B Laser Join Date: Oct 2007 Posts: 2,631 Rep Power: 142
amkdeath
Class 3B Laser

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Posts: 2,631
Rep Power: 142
Re: Divergance problem

Quote:
 Originally Posted by cbrian4 Has anyone ever had to rma a nova laser twice?
I doubt anyone has... They are a reputable company...

hope ya get ur laser fixed...
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03-22-2008, 05:18 AM #9
 Super Moderator Join Date: Oct 2007 Location: Houston Posts: 1,932 Rep Power: 462
spyrorocks
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Re: Divergance problem

CNIs usually have rather bad divergence, but I have found that there are matches that are hard/refuse to light.
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03-22-2008, 05:28 AM #10
 Class 3B Laser Join Date: Mar 2006 Location: Utah Posts: 3,859 Rep Power: 1427
Razako
Class 3B Laser

Join Date: Mar 2006
Location: Utah
Posts: 3,859
Rep Power: 1427
Re: Divergance problem

Quote:
 Originally Posted by spyrorocks CNIs usually have rather bad divergence, but I have found that there are matches that are hard/refuse to light.
I noticed that when burning some matches with my RPL. They were really old paper matches and my laser was actually burning black pits into them without lighting them. Good wooden matches light almost instantly at close range(1-3 feet) and it usually takes 15+ seconds if they are over 10 feet away.
__________________
700mw 405nm Sanwu Challenger(782mw peak 730ish mw average)
Sanwu Spiker Series 3W 445nm
2W O-like 450nm(2.2W average/2.25W peak) and Ebay 450nm THOR M II laser(1600mw average/1700 mw peak)
1.4W Jetlasers PL-E Pro 462nm(average 1490mw)
5.05W 465nm build by AlienLaser and 3.5W 465nm Jetlasers PL-E pro.
50mw 515nm challenger(85mw average) and 5-30mw penlaser
1W 520nm Sanwu Spiker series with beam expander
800mw 532nm Jetlasers PL-E Pro (850mw average, 988 mw peak) and 450mw laserglow Hercules with X10DR beam expander
8mw
561nm project box build(8-9mw average 10 mw peak)
589nm Dragon Lasers Spartan 50(51mw average/70mw peak)
593.5nm 2-5mw CNI penlaser(2-3mw average)
638nm Sanwu Spiker series(860mw average) and 500mw O-like 638nm pointer
639nm Sanwu Silver Series Tribeam(1700mw average/1800mwpeak)
1W 650nm Jetlasers PL-E Pro(1038mw average 1087mw peak)
671nm 100mw Red DPSS labby from LillyElectronics
685nm box pointer with laserlands 15mw module.

Meters:
Laserbee 3.7W usb LPM

03-22-2008, 07:46 AM #11
 Class 3B Laser Join Date: Oct 2007 Posts: 2,631 Rep Power: 142
amkdeath
Class 3B Laser

Join Date: Oct 2007
Posts: 2,631
Rep Power: 142
Re: Divergance problem

Quote:
 Originally Posted by Razako [quote author=spyrorocks link=1206150083/0#8 date=1206163108]CNIs usually have rather bad divergence, but I have found that there are matches that are hard/refuse to light.
I noticed that when burning some matches with my RPL. They were really old paper matches and my laser was actually burning black pits into them without lighting them. Good wooden matches light almost instantly at close range(1-3 feet) and it usually takes 15+ seconds if they are over 10 feet away.[/quote]

DX black tipped matches are the best
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03-22-2008, 09:03 AM #12
 Class 2 Laser Join Date: Dec 2007 Posts: 309 Rep Power: 16
cbrian4
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Posts: 309
Rep Power: 16
Re: Divergance problem

maybe i did get a bad batch of matches. They don't work for anything. I've tried match rockets, bolt bombs, and even the tennis ball bomb with these and neither worked. Come to think of it, when i had book matches they lit easily from two feet. I think im being to picky. When i did laserglows test, i came to a more reasonable 1.58mRad still bad, but pseudo says its typical of cni's. It does everything its supposed to do and pops balloons from quite aways so im happy

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