Welcome to LPF! Looking for a laser pointer? Click here for the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.









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


Real 1000mW Output - THOR M II Laser Pointer

























Go Back   Laser Pointer Forums > Lasers > Safety & Legal Issues

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






Reply
 
LinkBack Thread Tools Display Modes
Old 06-11-2016, 09:30 PM #1
Philipd7's Avatar
Class 1 Laser
 
Join Date: Jun 2015
Location: Hilliard, Ohio
Posts: 89
Rep Power: 136
Philipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond repute
Philipd7 Philipd7 is offline
Class 1 Laser
Philipd7's Avatar
 
Join Date: Jun 2015
Location: Hilliard, Ohio
Posts: 89
Rep Power: 136
Philipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond repute
Default Why You Should NEVER Buy Cheap Glasses

So recently, I bought the cheapest pair of glasses I could find on ebay with free shipping, to see if they were good.

Safety Glasses 600nm 700nm Red Laser Protection Goggle with Hard Protect Box Hot | eBay

I got them today and tested them. Absolutely horrible.
Here are some pics I took while testing them. BTW, I used a 650nm 300mw build as the laser.
philipd7's Library | Photobucket

If I were not told one of the pictures has glasses over them, and not just some filter, I would not notice a difference.
So, please just pay the extra money to get good glasses.
Good Glasses: Safety Goggles

Remember, your vision is priceless.


__________________
1.5W 445nm C6
4x 532nm ebay crap ?mw
300mw 650nm LPC-826DEAD
6.5W 445nm NUBM44 Maglite
NDB7675 Ultrafire XM-L2 462nm
Philipd7 is offline   Reply With Quote








Old 06-12-2016, 08:31 AM #2
Pi R Squared's Avatar
Class 3B Laser
 
Join Date: May 2013
Location: Snohomish County Washington, US
Posts: 3,798
Rep Power: 1546
Pi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond repute
Pi R Squared Pi R Squared is offline
Class 3B Laser
Pi R Squared's Avatar
 
Join Date: May 2013
Location: Snohomish County Washington, US
Posts: 3,798
Rep Power: 1546
Pi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond reputePi R Squared has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

I have a feeling this is especially common with the blue glasses that are supposed to block the red as a couple of other people have posted something like this in the past.

I would also advise against the "Trex" blue glasses, I think they are $20 or less on Amazon although they do block much red and are very dark I wouldn't trust them to protect me from a direct hit from a 100mW red laser.

Alan
__________________
Keychain 650nm <5mW
Quartet 4-in-1 630-680nm <1mW

AtlasNova 635nm <5mW
MillionAccessories 532nm <5mW broken
M462 462nm one of a kind (in progress)
PLTB450B 450nm 1913mW G2 lens
PL520 520nm 82mW acrylic lens
S06J 12X 405nm 590mW G2 lens
C6 M140 445nm 1.5W 3 element lens
9mm 445nm with G2 lens in a stainless steel host
Radiant Electronics X4 3.7W Laser Power Meter


Everyone please post here: Countries of LPF. Where are you? <link>
___________________________________________
The light that shines twice as bright burns half as long.
Pi R Squared is offline   Reply With Quote
Old 06-12-2016, 09:02 AM #3
GSS GSS is online now
Class 3R Laser
 
Join Date: Apr 2015
Location: Fall river MA
Posts: 1,837
Rep Power: 4971
GSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond repute
GSS GSS is online now
Class 3R Laser
 
Join Date: Apr 2015
Location: Fall river MA
Posts: 1,837
Rep Power: 4971
GSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

True like PI. said, I got what looks like the exact same pair from fastech and they do absolutely nothing. I paid $9 though. Could it really be that much more to darken the tint?
GSS is online now   Reply With Quote
Old 06-12-2016, 02:56 PM #4
SyKo's Avatar
Class 1M Laser
 
Join Date: Nov 2013
Location: Victoria, Australia
Posts: 202
Rep Power: 131
SyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond repute
SyKo SyKo is offline
Class 1M Laser
SyKo's Avatar
 
Join Date: Nov 2013
Location: Victoria, Australia
Posts: 202
Rep Power: 131
SyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

those blue glasses only seem to work with 635nm.
__________________

Check out my new store at: LaserComponents Australia
Our visit our eBay: LaserComponents eBay
50mW 532nm Green Laser Modules
100mW 532nm Green Laser Modules
100mW 660nm Red Laser Modules
200mW 660nm Red Laser Modules
20mW 405nm Violet Laser diodes
100mW 405nm Violet Laser Module
1000mW 445nm Laser Modules (12mm)
Wanna see something added to our store? Feel free to contact us!


Comming soon, a place to buy and sell laser diodes, modules, hosts, drivers, lenses and more with ease...
SyKo is offline   Reply With Quote
Old 06-12-2016, 04:51 PM #5
Philipd7's Avatar
Class 1 Laser
 
Join Date: Jun 2015
Location: Hilliard, Ohio
Posts: 89
Rep Power: 136
Philipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond repute
Philipd7 Philipd7 is offline
Class 1 Laser
Philipd7's Avatar
 
Join Date: Jun 2015
Location: Hilliard, Ohio
Posts: 89
Rep Power: 136
Philipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

Quote:
Originally Posted by SyKo View Post
those blue glasses only seem to work with 635nm.
That's too bad because most beginners get 650nm lasers, then go and buy these glasses.
__________________
1.5W 445nm C6
4x 532nm ebay crap ?mw
300mw 650nm LPC-826DEAD
6.5W 445nm NUBM44 Maglite
NDB7675 Ultrafire XM-L2 462nm
Philipd7 is offline   Reply With Quote
Old 06-12-2016, 04:57 PM #6
SyKo's Avatar
Class 1M Laser
 
Join Date: Nov 2013
Location: Victoria, Australia
Posts: 202
Rep Power: 131
SyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond repute
SyKo SyKo is offline
Class 1M Laser
SyKo's Avatar
 
Join Date: Nov 2013
Location: Victoria, Australia
Posts: 202
Rep Power: 131
SyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond reputeSyKo has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

yep, i wouldve gotten a pair of those a little more than 3 years ago and upon using them was immediately thinking ' This bright red dot is still bright...' wasnt until recently i tried them with a ~30mW 635nm and it seemed to do its job perfectly, nothing but a faint red circle.
__________________

Check out my new store at: LaserComponents Australia
Our visit our eBay: LaserComponents eBay
50mW 532nm Green Laser Modules
100mW 532nm Green Laser Modules
100mW 660nm Red Laser Modules
200mW 660nm Red Laser Modules
20mW 405nm Violet Laser diodes
100mW 405nm Violet Laser Module
1000mW 445nm Laser Modules (12mm)
Wanna see something added to our store? Feel free to contact us!


Comming soon, a place to buy and sell laser diodes, modules, hosts, drivers, lenses and more with ease...
SyKo is offline   Reply With Quote
Old 06-12-2016, 05:13 PM #7
GSS GSS is online now
Class 3R Laser
 
Join Date: Apr 2015
Location: Fall river MA
Posts: 1,837
Rep Power: 4971
GSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond repute
GSS GSS is online now
Class 3R Laser
 
Join Date: Apr 2015
Location: Fall river MA
Posts: 1,837
Rep Power: 4971
GSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond reputeGSS has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

Quote:
Originally Posted by SyKo View Post
yep, i wouldve gotten a pair of those a little more than 3 years ago and upon using them was immediately thinking ' This bright red dot is still bright...' wasnt until recently i tried them with a ~30mW 635nm and it seemed to do its job perfectly, nothing but a faint red circle.
I find it hard that 15nm or actually 12nm if they rate these reds at 638nm can make such a difference but stranger things have happened. I waited 3 1/2 weeks for delivery to find out in 5 seconds these glasses were garbage. This was the only time I was dissapointed with fastech as they refused a refund or credit because they said the glasses came unbroken. Even for the sake of it I tried them to see if the worked like sun glasses or at least helped. "Hey I wanted them to do something at this point". Not even a thing
GSS is online now   Reply With Quote
Old 06-12-2016, 05:48 PM #8
Philipd7's Avatar
Class 1 Laser
 
Join Date: Jun 2015
Location: Hilliard, Ohio
Posts: 89
Rep Power: 136
Philipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond repute
Philipd7 Philipd7 is offline
Class 1 Laser
Philipd7's Avatar
 
Join Date: Jun 2015
Location: Hilliard, Ohio
Posts: 89
Rep Power: 136
Philipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond reputePhilipd7 has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

That would be really frustrating

Isn't it funny how specific these generic glasses are with their wavelength compatibility...?
__________________
1.5W 445nm C6
4x 532nm ebay crap ?mw
300mw 650nm LPC-826DEAD
6.5W 445nm NUBM44 Maglite
NDB7675 Ultrafire XM-L2 462nm
Philipd7 is offline   Reply With Quote
Old 10-05-2016, 04:23 AM #9
Junior Member
 
Join Date: Oct 2016
Posts: 7
Rep Power: 0
Hilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond repute
Hilda200 Hilda200 is offline
Junior Member
 
Join Date: Oct 2016
Posts: 7
Rep Power: 0
Hilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

I don't go for online shopping. I had almost the same experience. Once I bought a wrist watch online. The first day was okay. Second day onwards time just stopped. I tried to repair it, but it was of no use. Just waste of money.
Hilda200 is offline   Reply With Quote
Old 10-05-2016, 04:48 AM #10
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,110
Rep Power: 7046
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,110
Rep Power: 7046
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Why You Should NEVER Buy Cheap Glasses

Quote:
Originally Posted by Hilda200 View Post
I don't go for online shopping. I had almost the same experience. Once I bought a wrist watch online. The first day was okay. Second day onwards time just stopped. I tried to repair it, but it was of no use. Just waste of money.

Usually the problem is more of a "buy cheap, pay twice thing". Not much to do with shopping online. You can get great quality stuff that works and lasts online just fine, you just need to spend the cash and do the research.
__________________


445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | For Review Awaiting arrival
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD.850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2

Last edited by diachi; 10-05-2016 at 04:48 AM.
diachi is online now   Reply With Quote
Old 10-05-2016, 05:48 AM #11
Junior Member
 
Join Date: Oct 2016
Posts: 7
Rep Power: 0
Hilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond repute
Hilda200 Hilda200 is offline
Junior Member
 
Join Date: Oct 2016
Posts: 7
Rep Power: 0
Hilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond reputeHilda200 has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

You may be right Diachi.. It's just based on lucks.. Some may get good products and some may get damaged products. Mine was not that cheap, but I don't understand what's the real problem with my watch. May be I should've been more careful while choosing a product.
Hilda200 is offline   Reply With Quote
Old 10-05-2016, 11:24 PM #12
paul1598419's Avatar
Class 3B Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 2,707
Rep Power: 4306
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 3B Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 2,707
Rep Power: 4306
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: Why You Should NEVER Buy Cheap Glasses

Just looking at those light blue glasses makes me think they are worthless. I have some inexpensive red and green glasses that do protect against 300 mW red lasers and lower power 532nm too. Never got the blue ones, though. I used the red pair to measure the amount of 808nm light left over from a 532nm and found it doesn't exists as a collimated beam in the low power greens. I used a spectrometer to measure it.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
445nm 1.75 watts SkyRay Gifted
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

445nm 2 watt SMP Copper Host
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
532nm 200mW thermostatically Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PSU New
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
LaserBee II 3.2 Watt LPM
Radiant X4 3.7 Watt LPM
Eisco Scientific Spectroscope 400nm- 700nm
paul1598419 is online now   Reply With Quote
Old 10-15-2016, 12:39 AM #13
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 6,981
Rep Power: 2976
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: 6,981
Rep Power: 2976
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: Why You Should NEVER Buy Cheap Glasses

The difference is that with safety equipment failure can result in harm.

If your watch doesn't keep time well, your mp3 player sounds awful or your smart watch turns out to be rather dumb, you're out a little bit of money.

If you rely on safety goggles you can lose an eye when they are faulty.

One bit of luck with safety goggles is that you can actually test them by shining the laser through them and measure how much dimmer the beam gets. It could be so that after a while the beam burns a hole through, but you get an idea of how long that takes and these things are usually intended to protect against brief accidental exposures (reflections and such), not for purposely staring into lasers.

It's not all about price though. You CAN get $10 goggles that will protect you at OD 3+ from 445 nm lasers and take over a minute to burn through with a couple of watts. You can also get $50 goggles that are only OD2 or so leaving brief relections from lasers that produce a few watts so bright that you cannot blink fast enough to save your eyes.

These are logarithmic scales, if you have a 2 watt laser, OD3 glasses will render them to be effectively 2 mW, dangerous but not likely to cause permanent damage. If they are OD2 instead, 20 mW will remain, too much to even blink against.
Benm is online now   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








Top 50 Laser Pointer Companies - Green Lasers Top 50 Laser Pointer Companies - Blue Lasers Top 50 Laser Pointer Companies - Red Lasers
Top 50 Laser Pointer Companies - Yellow Lasers Top 50 Laser Pointer Companies - Purple Lasers Top 50 Laser Pointer Companies - Orange Lasers
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 10:19 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