Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Laser Measurements



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 05-12-2014, 05:41 PM #1
Junior Member
 
Join Date: Nov 2010
Posts: 10
Rep Power: 0
Thinkcat is on a distinguished road
Thinkcat Thinkcat is offline
Junior Member
 
Join Date: Nov 2010
Posts: 10
Rep Power: 0
Thinkcat is on a distinguished road
Default How powerful are 5 mW eBay pointers in reality?

Hello

After getting six "5 mW" pen pointers, two 405 nm (violet), two 635 nm (orange), one 532 nm (orange) and one 650 nm (red) I wonder if these really are all 5 mW pointers.

The red one is misaligned, and in addition to the dot, there is a semi-arc around it. The two orange ones were equally bright and good for presentations. One of the violet pointers has an awful lot of divergence, the other one is fine.

What concerns me most is the green pointer. There is a glitch in its power button. It is as if there were two power levels coming up randomly, and rubbing your finger back and forth while pushing the button will get you the higher power unless you already have it.

I have two questions. First one is, has anyone done measurements with these cheap 13-in-a-dozen pen pointers? What have been the results?

And the second one. Is it possible to determine the emitted power of the green pointer with any accuracy, maybe to 10 or 20 percent, by measuring the current it draws from the batteries?



Last edited by Thinkcat; 05-12-2014 at 05:42 PM.
Thinkcat is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 05-12-2014, 05:56 PM #2
ChaosLord's Avatar
Class 2M Laser
 
Join Date: Feb 2013
Location: Louisville, KY
Posts: 763
Rep Power: 212
ChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond repute
ChaosLord ChaosLord is offline
Class 2M Laser
ChaosLord's Avatar
 
Join Date: Feb 2013
Location: Louisville, KY
Posts: 763
Rep Power: 212
ChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond reputeChaosLord has a reputation beyond repute
Default Re: How powerful are 5 mW eBay pointers in reality?

Yes, cheap chinese pointers have been measured from ebay and other places. There are a few rather recent threads on these. The 532nm almost always are > 5mW.

As far as measuring output based an current draw, you can get an estimate, but actual output will vary. Diode efficiency, crystal quality/alignment/efficiency, lens quality, ect. All effect final output power.
__________________
405nm SkyLaser PL 300-500 - ~500mW (523mW);| SkyLaser LP 5-80 - 5mW
405nm SkyRay 12X S06J w/450mA microboost - 485mW :|: BDR-209 16X w/700mA microboost 2X in ZeroLasers SkyRay and Chunk hosts
445nm ZeroLaser 2x18650 host 9mm w/2.3A X-drive - 2.8W :|: Trustfire A8 9mm w/2.4A X-drive - "The Sentinel" ~3W
445nm JetLasers PL-E - ~1.25W (1.32W) :|: 445nm 9mm w/2.4A X-drive Kryton "the Terminator" :|: Blord 501B build - 2.1W
450nm Osram PLTB450 in SL S4 host - 1.48W :|: 450nm Osram PL450B with ~280mA microboost in C6 host - 235mWBuild here
462nm 9mm diode in ZeroLasers chunk w/1.8A X-drive :|: M462 in sinner Cypreus-II w/microboost
473nm CNI lab 40mW
520nm NDG700 @1.8A in Cypreus-IIb - 1.04W :|: PL520 w/300mA x-boost in S4 host - 102mW Build here
532nm JetLasers Ti-B - 100mW (151mW)
589nm Dragonlasers Spartan 50mW
638nm Mits in SL C6 host custom build - 677mW :|: Opnext single mode 290mA x-drive in SL Steel C6 host w/ext. copper HS - 230mW
650nm copper module in C6 host - ~300mW (230mW) Build here
650nm module in custom host - ~300mW (224mW) "LiL Red Eye" Build Here

Radiant X4 3.7W LPM
Nospin 5W LPM
ChaosLord is offline   Reply With Quote
Old 05-12-2014, 08:22 PM #3
Junior Member
 
Join Date: Nov 2010
Posts: 10
Rep Power: 0
Thinkcat is on a distinguished road
Thinkcat Thinkcat is offline
Junior Member
 
Join Date: Nov 2010
Posts: 10
Rep Power: 0
Thinkcat is on a distinguished road
Default Re: How powerful are 5 mW eBay pointers in reality?

Tested my green pointer. It draws about 390 mA. How does this sound?

One of my violet pointers draws 150 mA. The one with too much dispersion. The other is 210 mA.

Orange one 45 mA. Red one 90 mA.

Last edited by Thinkcat; 05-12-2014 at 08:43 PM.
Thinkcat is offline   Reply With Quote
Old 05-13-2014, 10:11 PM #4
Antharak's Avatar
Class 2M Laser
 
Join Date: Apr 2013
Location: New Haven CT USA
Posts: 541
Rep Power: 2244
Antharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond repute
Send a message via Skype™ to Antharak
Antharak Antharak is offline
Class 2M Laser
Antharak's Avatar
 
Join Date: Apr 2013
Location: New Haven CT USA
Posts: 541
Rep Power: 2244
Antharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond reputeAntharak has a reputation beyond repute
Send a message via Skype™ to Antharak
Default Re: How powerful are 5 mW eBay pointers in reality?

I've metered ebay pens on my LPM from 1mw to 170mw. You really can't tell what the output is without a LPM. Any other method is just not accurate.
Ed
__________________
SAFETY FIRST, LAST AND ALWAYS
http://laserpointerforums.com/f53/la...lpm-83409.html
Cheap Ebay glasses, burn through test.
http://laserpointerforums.com/f53/ch...ugh-83419.html

All you could ever want to know about batteries
www.batteryuniversity.com

Cheap Charger danger
http://laserpointerforums.com/f44/fy...ail-82217.html

Get some safety goggles now
http://laserpointerforums.com/f53/ge...now-75799.html

How healthy is your battery
http://laserpointerforums.com/f67/ho...nce-57576.html

My first build
http://laserpointerforums.com/f51/my...ild-85283.html


Lasers
MSD 303 808nm 256mw/converted 532nm
M who knows 405nm 15mw
Qtech 405nm 95mw with Pmans focus mod
Ebay 405nm 135mw and 12mw pens
405nm Pman special 35mw made from parts he sent me.
Fast Tech 405nm 107mw
Rick Trent 445nm 2.7w Grey host
1st build 450nm PLT450B C3/ YZ-C55 145mw
NDB7675 462nm 1.8 w
515nm 130mw NDG4216
Pman special 532nm 114mw
Ebay 532nm 12mw and 13mw pens
635 ebay pen 5 mw
Qtech 650nm 100mw with Pmans focus mod
SFCR-200 650nm 290mw
Melles Griot P-50 632.8 nm 1mw HeNe
Melles Griot LHR-201-372 632.8 8mw HeNe
405nm BDR-209 800mw custom heatsink and focus by FP
GPT Laser-gard goggles
Noir ARG #60 goggles
Chargers Opus BT-C3100 V2.2 Nitecore Intellicharger i4
LPM Bluefan high range.
Antharak is offline   Reply With Quote
Old 05-13-2014, 10:48 PM #5
Junior Member
 
Join Date: Nov 2010
Posts: 10
Rep Power: 0
Thinkcat is on a distinguished road
Thinkcat Thinkcat is offline
Junior Member
 
Join Date: Nov 2010
Posts: 10
Rep Power: 0
Thinkcat is on a distinguished road
Default Re: How powerful are 5 mW eBay pointers in reality?

Quote:
Originally Posted by BubonicCronic View Post
If you want a real 5mW pen look here.

Laserglow Technologies
Quote:
Originally Posted by Antharak View Post
You really can't tell what the output is without a LPM. Any other method is just not accurate.
Ed
I assume my best bet would be an LPM and a good handful of random pen lasers. Then I would have much choice with brightness and power and beams and I wouldn't have to spend more than 50 dollars (price plus postage) to get a single good pointer.

Question is, how to get a good enough LPM without spending a fortune? I am not yet so much into this that I would want to invest more than what is absolutely necessary. What about Bauer's HLPM II?
Thinkcat is offline   Reply With Quote
Old 05-14-2014, 08:39 AM #6
BurningLaserGuy's Avatar
Class 2 Laser
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
BurningLaserGuy BurningLaserGuy is offline
Class 2 Laser
BurningLaserGuy's Avatar
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
Default Re: How powerful are 5 mW eBay pointers in reality?

Usually they are overspec. 635nm pen?! Nice, that shouldn't be too overspec.
__________________
532nm@15mW Laser Pen(dead)
532nm@~20mW Laser Pen


"What we can not speak about we must pass over in silence" (Ludwig Wittgenstein)...at least it supposed to be

Must read!!!:http://laserpointerforums.com/f44/co...ead-82066.html

Sometimes I'm so motivated to make a project that I could break wallnuts with a leaf. Sometimes.

Last edited by BurningLaserGuy; 05-14-2014 at 08:40 AM.
BurningLaserGuy is offline   Reply With Quote
Old 05-14-2014, 08:42 AM #7
BurningLaserGuy's Avatar
Class 2 Laser
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
BurningLaserGuy BurningLaserGuy is offline
Class 2 Laser
BurningLaserGuy's Avatar
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
Default Re: How powerful are 5 mW eBay pointers in reality?

Quote:
Originally Posted by BubonicCronic View Post
If you want a real 5mW pen look here.

Laserglow Technologies
Well, Laserglow have quality items, but they aren't kow for low prices as well.

Sorry to mods for posting this in a diferent post
__________________
532nm@15mW Laser Pen(dead)
532nm@~20mW Laser Pen


"What we can not speak about we must pass over in silence" (Ludwig Wittgenstein)...at least it supposed to be

Must read!!!:http://laserpointerforums.com/f44/co...ead-82066.html

Sometimes I'm so motivated to make a project that I could break wallnuts with a leaf. Sometimes.
BurningLaserGuy is offline   Reply With Quote
Old 05-15-2014, 04:27 AM #8
BurningLaserGuy's Avatar
Class 2 Laser
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
BurningLaserGuy BurningLaserGuy is offline
Class 2 Laser
BurningLaserGuy's Avatar
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
Default Re: How powerful are 5 mW eBay pointers in reality?

Quote:
Originally Posted by BubonicCronic View Post
Laserglow is one of the rare places you can buy an actual 1-5mW pen laser. Optotronics is another.
What about CNI?
__________________
532nm@15mW Laser Pen(dead)
532nm@~20mW Laser Pen


"What we can not speak about we must pass over in silence" (Ludwig Wittgenstein)...at least it supposed to be

Must read!!!:http://laserpointerforums.com/f44/co...ead-82066.html

Sometimes I'm so motivated to make a project that I could break wallnuts with a leaf. Sometimes.
BurningLaserGuy is offline   Reply With Quote
Old 05-15-2014, 05:09 PM #9
BurningLaserGuy's Avatar
Class 2 Laser
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
BurningLaserGuy BurningLaserGuy is offline
Class 2 Laser
BurningLaserGuy's Avatar
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
Default Re: How powerful are 5 mW eBay pointers in reality?

Yep I didn't noiteced that
__________________
532nm@15mW Laser Pen(dead)
532nm@~20mW Laser Pen


"What we can not speak about we must pass over in silence" (Ludwig Wittgenstein)...at least it supposed to be

Must read!!!:http://laserpointerforums.com/f44/co...ead-82066.html

Sometimes I'm so motivated to make a project that I could break wallnuts with a leaf. Sometimes.

Last edited by BurningLaserGuy; 05-15-2014 at 05:10 PM.
BurningLaserGuy is offline   Reply With Quote
Old 05-16-2014, 12:55 AM #10
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,437
Rep Power: 18095
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,437
Rep Power: 18095
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: How powerful are 5 mW eBay pointers in reality?

Quote:
Originally Posted by Thinkcat View Post
Hello
What concerns me most is the green pointer. There is a glitch in its power button. It is as if there were two power levels coming up randomly, and rubbing your finger back and forth while pushing the button will get you the higher power unless you already have it.
If the vendor intended these lasers to be actually 5 mW (which could be the case, or also just a matter of complying with ebay or customs rules), the direct-diode ones are mosty likely to be sort of accurate.

The green is a different story. Due to the way these work their output depends on factors like ambient temperature, and could be far under or over what is specifed. If it draws 390 mA of current it probably is well over specification, or very inefficient. Such current draw is typical of 532 laser modules with output powers in the range of 50 to 100 mW.
Benm is online now   Reply With Quote
Old 05-16-2014, 11:45 AM #11
Cel's Avatar
Cel Cel is online now
Class 2M Laser
 
Join Date: Jan 2012
Location: Croatia
Posts: 738
Rep Power: 1724
Cel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond repute
Cel Cel is online now
Class 2M Laser
Cel's Avatar
 
Join Date: Jan 2012
Location: Croatia
Posts: 738
Rep Power: 1724
Cel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond reputeCel has a reputation beyond repute
Default Re: How powerful are 5 mW eBay pointers in reality?

But how much of that power is IR?
Cel is online now   Reply With Quote
Old 05-16-2014, 04:17 PM #12
BurningLaserGuy's Avatar
Class 2 Laser
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
BurningLaserGuy BurningLaserGuy is offline
Class 2 Laser
BurningLaserGuy's Avatar
 
Join Date: Jul 2013
Location: Romania
Posts: 328
Rep Power: 73
BurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond reputeBurningLaserGuy has a reputation beyond repute
Send a message via Yahoo to BurningLaserGuy
Default Re: How powerful are 5 mW eBay pointers in reality?

Quote:
Originally Posted by Cel View Post
But how much of that power is IR?
Usually about 1/3, 2/5 or so at overspec 532nm ones.
__________________
532nm@15mW Laser Pen(dead)
532nm@~20mW Laser Pen


"What we can not speak about we must pass over in silence" (Ludwig Wittgenstein)...at least it supposed to be

Must read!!!:http://laserpointerforums.com/f44/co...ead-82066.html

Sometimes I'm so motivated to make a project that I could break wallnuts with a leaf. Sometimes.
BurningLaserGuy is offline   Reply With Quote
Old 05-17-2014, 12:09 AM #13
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,437
Rep Power: 18095
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,437
Rep Power: 18095
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: How powerful are 5 mW eBay pointers in reality?

It could be that much indeed - depends on how (in)efficient they are, and for low price units you cannot expect them to have an IR filter installed, although you can do that quite easily yourself if there is some room inside the unit. You could just glue it to the output aperture (preferable on the inside of the unit) if you must.

Note that the IR is -not- collimated with the green light usually. What leaks out is 808 nm pump light which usually has a much larger divergence than the green, meaning it is mostly hazardoes at close range, but at several meters range its contribution is likely to be marginal.
Benm is online now   Reply With Quote
Old 05-22-2014, 08:19 PM #14
Rifter's Avatar
Class 2M Laser
 
Join Date: May 2014
Location: Vancouver BC Canada
Posts: 572
Rep Power: 281
Rifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond repute
Rifter Rifter is offline
Class 2M Laser
Rifter's Avatar
 
Join Date: May 2014
Location: Vancouver BC Canada
Posts: 572
Rep Power: 281
Rifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond repute
Default Re: How powerful are 5 mW eBay pointers in reality?

Just tested my 2 ebay pens on my RE X4, both ebay lasers are 2xaaa units. both labeled less than 5mw power.

Red one tested 32mw peak avg around 28.

green one died during testing, made it just over 60 seconds and died, was still climbing and was at 62mw when it dies.
__________________
DIY OSRAM PL520 Camo 501B Host 520nm 80mw
DIY OSRAM PL450B Black C6 Host 450nm 180mw
Laserglow Libra 635nm 5mw
Laserglow Anser 532nm 5mw
Survival Laser S4 Host660nm 300mw
Custom Sinner Host 638nm Oclaro 194mw
Radiant Electronics X4 LPM

Last edited by Rifter; 05-22-2014 at 08:19 PM.
Rifter is offline   Reply With Quote
Old 05-24-2014, 01:05 AM #15
Bionic-Badger's Avatar
Class 4 Laser
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,478
Rep Power: 2585
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Bionic-Badger Bionic-Badger is offline
Class 4 Laser
Bionic-Badger's Avatar
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,478
Rep Power: 2585
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Default Re: How powerful are 5 mW eBay pointers in reality?

Whereas a 5mW red will last forever, even the 5mW green pens eat through batteries and warm up pretty quick.
__________________
You must spread some Reputation around before giving it to <person> again.
Bionic-Badger is offline   Reply With Quote
Old 05-24-2014, 11:30 PM #16
Rifter's Avatar
Class 2M Laser
 
Join Date: May 2014
Location: Vancouver BC Canada
Posts: 572
Rep Power: 281
Rifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond repute
Rifter Rifter is offline
Class 2M Laser
Rifter's Avatar
 
Join Date: May 2014
Location: Vancouver BC Canada
Posts: 572
Rep Power: 281
Rifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond reputeRifter has a reputation beyond repute
Default Re: How powerful are 5 mW eBay pointers in reality?

Quote:
Originally Posted by BubonicCronic View Post
Pens have nearly no heat sinking. The green DPSS lasers use IR to create the 532 wavelength. Its an extremely inefficient process. I dont know the math but the IR is in the >300mW range. Maybe more. Those pens cannot handle one minute of constant >300mW power. Thats why it died. I would not push any pen over 30 seconds unless it was true 5mW.
I was giving them the benifit of the doubt about its power rating till i tested it My laserglow 5mw green pen has a duty cycle of 90 seconds i assumed this ebay pen would be the same if it indeed was 5mw, but as we now know it was far from 5mw.
__________________
DIY OSRAM PL520 Camo 501B Host 520nm 80mw
DIY OSRAM PL450B Black C6 Host 450nm 180mw
Laserglow Libra 635nm 5mw
Laserglow Anser 532nm 5mw
Survival Laser S4 Host660nm 300mw
Custom Sinner Host 638nm Oclaro 194mw
Radiant Electronics X4 LPM
Rifter is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 02:25 AM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC