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01-07-2015, 05:06 PM #1
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
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CNI MGL MBL 4 Watt Lasers

Guys,

I need some pro and no go opinions regarding these lasers, what do you all think? Worth a risk to buy?

CNI Model MGL 4W MBL 4W High Power Green Blue Lasers with DPSSL Driver | eBay

__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

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01-08-2015, 12:22 AM #2
 Class 4 Laser Join Date: Sep 2007 Location: Wisconsin Posts: 8,852 Rep Power: 1350
Cyparagon
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Re: CNI MGL MBL 4 Watt Lasers

Risk? What risk? There's a photo of both of them running, and the PSU is included. What more do you want??

You better buy those soon, or I'm going to nab them.
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A problem well stated is a problem half solved.

01-08-2015, 12:54 AM #3
 Class 3B Laser Join Date: Jul 2012 Location: IN, United States Posts: 2,862 Rep Power: 498
crazyspaz
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Re: CNI MGL MBL 4 Watt Lasers

I second what Cyp said. I have a question for you though, you seem to be collecting quite a lot of very powerful lasers- do you use them for something? Or just collecting?

Edit: just rwalized that listing is for both lasers. If you are even considering it, buy it now- they wont be there long!

Last edited by crazyspaz; 01-08-2015 at 12:56 AM.

01-08-2015, 01:16 AM #4
 Super Moderator Join Date: Feb 2011 Location: Canada Posts: 6,987 Rep Power: 1012
ARG
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Re: CNI MGL MBL 4 Watt Lasers

Agreed with the two above. Look at the seller's feedback, doesn't appear to be any risk there.

01-08-2015, 04:38 AM #5
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
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Re: CNI MGL MBL 4 Watt Lasers

OK, he had another one I'm going to get from him, nab!

Thanks, I don't know what happens to them over time, if they loose much power or what. I just have an interest in high power lasers, I don't really have a use for them.
__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

_______

01-08-2015, 03:38 PM #6
 Super Moderator Join Date: Feb 2011 Location: Canada Posts: 6,987 Rep Power: 1012
ARG
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Re: CNI MGL MBL 4 Watt Lasers

Quote:
 Originally Posted by Alaskan I don't know what happens to them over time, if they loose much power or what. I just have an interest in high power lasers, I don't really have a use for them.
Lab lasers don't drop in power as much as handhelds due over time. The cooling in lab lasers is much better and the diodes are driven at reasonable currents.

01-08-2015, 05:05 PM #7
 Class 3B Laser Join Date: Nov 2012 Location: Rochester, NY Posts: 4,240 Rep Power: 2194
Pman
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Re: CNI MGL MBL 4 Watt Lasers

Still shows available.... thought you were buying them?
__________________
I'm not strange, I'm limited edition!

*Jayrob Star Trek Phaser*
# of Lasers - ***
# of DTR/510 laser adapters *
# of eGo/510 mods **
# of Batteries - ***
Wavelengths - 405, 445, 447, 450, 455, 462, 464, 470, 473, 473+, <515, 515, 520, 532, 589, 635, 638, 650, 660, 685, 808, 830, 980
Projector - PD2
O-Like mini red/green to yellow module
Beam Expanders - Dragon Lasers 2x & 5x with universal adapters
LPM's - Modified AW TEC, Custom 6.8W+ Ophir
Datalogger - ARG
Chargers - Ultrafire WF139, (2) Xtar WP2, Nitecore i2, UM20, (3) i4, (2) D4 , Opus BTC-3400 V2.2
Phlatlights - Jayrob PT-54 green 1000lm maglight, PT-54 red project box build, (3) PT-54 red, (2) PT-54 orange (3) PT-121 red, (2) PT-121 blue, (1) PT-121 green project work in progress 5000lm (1) PT-121 green

"Post your pics of unique builds no-one else has"
"Make your way overspec \$5 pen focusable"
"Pman special"

01-08-2015, 05:58 PM #8
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
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Re: CNI MGL MBL 4 Watt Lasers

I decided to just buy a green one on a seperate listing
__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

_______

01-08-2015, 06:33 PM #9
 Class 3B Laser Join Date: Nov 2012 Location: Rochester, NY Posts: 4,240 Rep Power: 2194
Pman
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Re: CNI MGL MBL 4 Watt Lasers

Got it
I also have no "use" for any of my lasers other than pure magical pleasure and fun building.
__________________
I'm not strange, I'm limited edition!

*Jayrob Star Trek Phaser*
# of Lasers - ***
# of DTR/510 laser adapters *
# of eGo/510 mods **
# of Batteries - ***
Wavelengths - 405, 445, 447, 450, 455, 462, 464, 470, 473, 473+, <515, 515, 520, 532, 589, 635, 638, 650, 660, 685, 808, 830, 980
Projector - PD2
O-Like mini red/green to yellow module
Beam Expanders - Dragon Lasers 2x & 5x with universal adapters
LPM's - Modified AW TEC, Custom 6.8W+ Ophir
Datalogger - ARG
Chargers - Ultrafire WF139, (2) Xtar WP2, Nitecore i2, UM20, (3) i4, (2) D4 , Opus BTC-3400 V2.2
Phlatlights - Jayrob PT-54 green 1000lm maglight, PT-54 red project box build, (3) PT-54 red, (2) PT-54 orange (3) PT-121 red, (2) PT-121 blue, (1) PT-121 green project work in progress 5000lm (1) PT-121 green

"Post your pics of unique builds no-one else has"
"Make your way overspec \$5 pen focusable"
"Pman special"

Last edited by Pman; 01-08-2015 at 06:34 PM.

02-08-2015, 04:53 PM #10
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
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Re: CNI MGL MBL 4 Watt Lasers

Just an update to the thread:

Photo of output on a foggy night, I only ran it for about 30 seconds outside when this photo was taken, afraid to run it much longer for two reasons, the cold and the neighbors who might object. So powerful the light from the side of the beam lights up the side of a nearby house and cars stopping on the street.... Quickly went back inside before I got reported for disturbing the peace among other possible issues which could be brought up (no need to call me out on them, I know, but I had to try it outside at night at least once). I need to take a trip out into the wild to play with it longer using a sine wave 12 VDC inverter to power it. With something like this, you can't point it at anything, only high in the sky, preferably during a foggy or low cloud deck night. This night was more like that, no fog at standing ground level, but at roof top level and above, the fog too dense to bother any airplanes with it. No, no photoshop or long exposures, this thing was bright, I was kidding earlier.

I'm itching to put a concave lens on it to expand the beam coupled with a 12 inch diameter PCX lens I have to see what it does at uber low divergence from mountain top to mountain top when I can do so, only problem is the glass lens is so damn heavy, I ordered a 300mm diameter 600mm FL Fresnel lens to give it a try with that too.

4.25W
__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

_______

Last edited by Alaskan; 02-08-2015 at 07:05 PM.

11-27-2015, 08:48 PM #11
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
Class 3B Laser

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Location: Deployed to Iraq
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Re: CNI MGL MBL 4 Watt Lasers

I bought it, had fun with it, but want to sell it now to pay for a new toy. Anyone want to help determine a good price for it for me before I list it? I'm in Anchorage, Alaska so shipping isn't cheap, probably 100 dollars.
__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

_______

11-27-2015, 08:56 PM #12
 Super Moderator Join Date: Sep 2013 Location: Central California Coast Posts: 6,160 Rep Power: 1735
Hap
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Re: CNI MGL MBL 4 Watt Lasers

Quote:
 Originally Posted by Alaskan I bought it, had fun with it, but want to sell it now to pay for a new toy. Anyone want to help determine a good price for it for me before I list it? I'm in Anchorage, Alaska so shipping isn't cheap, probably 100 dollars.
Hum...I think somewhere along the lines of \$1,200-\$1,500

-Alex
__________________
My Lasers:
650nm: laserbtb LP650-5 (peak 15mW)
635nm: Laserglow Libra (peak 4mW)
593.5nm: Laserglow Rigel-2 (peak 1mW)
532nm: Laserglow Anser (waiting for arrival)

"Open your eyes, look within. Are you satisfied with the life you're living?" -Bob Marley
“The universe is a pretty big place. If it's just us, seems like an awful waste of space.” -Carl Sagan
You are important: Pale Blue Dot

11-27-2015, 08:58 PM #13
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
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Re: CNI MGL MBL 4 Watt Lasers

That's what I was thinking too, thanks.
__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

_______

11-27-2015, 09:08 PM #14
 Class 3B Laser Join Date: Jul 2015 Location: Suburbs of Atlanta Georgia Posts: 3,662 Rep Power: 2063
RedCowboy
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Re: CNI MGL MBL 4 Watt Lasers

Well darn, I'm late to the party, it says sold.

WOW, I searched his items for laser and he has more stuff, the novalux I have heard are very temp picky, but is that 49 dollar lens a telescope...grrr I'm asking and will probably see it sold in a minute.

http://www.ebay.com/sch/m.html?_odkw...laser&_sacat=0

Is this a telescope optic, I wonder what the coating is for nm range wise?
http://www.ebay.com/itm/LASER-OPTIC-...4AAOSwBLlVOES5
__________________
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It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 11-27-2015 at 09:29 PM.

11-27-2015, 09:12 PM #15
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
Class 3B Laser

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Location: Deployed to Iraq
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Re: CNI MGL MBL 4 Watt Lasers

That ebay listing was much earlier in the year, I bought the 4W 532nm laser of the same type from the same seller which I am now wanting to sell. I just put it on Craigs List here in Anchorage hoping not to have to bother with shipping, if I can find a local buyer.
__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

_______

11-27-2015, 09:18 PM #16
 Super Moderator Join Date: Sep 2013 Location: Central California Coast Posts: 6,160 Rep Power: 1735
Hap
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Re: CNI MGL MBL 4 Watt Lasers

Quote:
 Originally Posted by Alaskan That's what I was thinking too, thanks.
You are welcome

-Alex
__________________
My Lasers:
650nm: laserbtb LP650-5 (peak 15mW)
635nm: Laserglow Libra (peak 4mW)
593.5nm: Laserglow Rigel-2 (peak 1mW)
532nm: Laserglow Anser (waiting for arrival)

"Open your eyes, look within. Are you satisfied with the life you're living?" -Bob Marley
“The universe is a pretty big place. If it's just us, seems like an awful waste of space.” -Carl Sagan
You are important: Pale Blue Dot

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