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 > Blue, Yellow, & Other Colored Lasers



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



Closed Thread
 
LinkBack Thread Tools Display Modes
Old 09-30-2010, 06:59 AM #1
Junior Member
 
Join Date: Sep 2010
Posts: 12
Rep Power: 0
Trajork is on a distinguished road
Trajork Trajork is offline
Junior Member
 
Join Date: Sep 2010
Posts: 12
Rep Power: 0
Trajork is on a distinguished road
Default Slightly crazy 980 nm laser experiment

I've recently gotten into cheap lower-powered lasers, and I'm interested in the limits of human vision. To that end, I just bought a 5 mW 980 nm laser off the Internet. As I understand it, looking directly into lasers of that power for a time on the order of a few seconds should be fairly safe. If I do this with the laser I just bought, what do you think will happen?

Possibilities:
-I see a red light when I shine it into my eye.
-980 nm is totally invisible, and I see nothing.
-I fry my eye, due to some difference between the 650 nm lasers that are virtually harmless and 980 nm light at the same intensity


Trajork is offline  







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







Old 09-30-2010, 07:03 AM #2
Class 1M Laser
 
Join Date: Oct 2007
Location: Cleveland Heights, OH
Posts: 106
Rep Power: 13
x101xtreme is just really nicex101xtreme is just really nicex101xtreme is just really nicex101xtreme is just really nice
x101xtreme x101xtreme is offline
Class 1M Laser
 
Join Date: Oct 2007
Location: Cleveland Heights, OH
Posts: 106
Rep Power: 13
x101xtreme is just really nicex101xtreme is just really nicex101xtreme is just really nicex101xtreme is just really nice
Default Re: Slightly crazy 980 nm laser experiment

If I were you, I would not point a laser of any power directly into my eyes. The truth is that even if the laser is advertised as 5mw, there's really no way to be sure. Especially since it's 980nm, it probably won't be that visible. If I were you, I'd point the laser at a sheet of paper and see if the dot is visible. No point in risking your eyesight.
__________________
Lasers:
200mW CNI GLP
168mW Optotronics Premium Pen Laser
50mW o-like custom green
30mW Ebay greenie

80mW Altoids PHR laser
600mW Pioneer 12x laser

1.6 Watt 445nm Jayrob Solarforce L2P Laser

330mW Custom Built LPC-815 Red Laser
x101xtreme is offline  
Old 09-30-2010, 07:08 AM #3
StridAst's Avatar
Class 2 Laser
 
Join Date: Oct 2009
Location: Utah
Posts: 364
Rep Power: 31
StridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond repute
StridAst StridAst is offline
Class 2 Laser
StridAst's Avatar
 
Join Date: Oct 2009
Location: Utah
Posts: 364
Rep Power: 31
StridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond reputeStridAst has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

5mw is safe for visible lasers because the blink reflex kicks in to protect your eyesight. It can still damage the eyes, permanently. It just does it slower then the typical human blink reflex kicks in. With 980, if you can't see it well, or at all, then the blink reflex won't be kicking in. Perhaps it's less damaging to the retina then higher wavelengths, perhaps it won't still fry a small hole in your retina. Then again, perhaps not. You really want to take the risk? Remember, even a small hole in the retina will cost you a chunk of vision. Forever. And if the retina detaches, it can cost you all of that eye's vision. Forever.
__________________
StridAst

90-100mW green module in modified Dorcy
PHR @ 120mA
GGW @ 200mA in a labby style "wax pen"
12X 545mW in a sterling silver host.

445 in a steampunk gun setting @ 1600ma
StridAst is offline  
Old 09-30-2010, 07:18 AM #4
Junior Member
 
Join Date: Sep 2010
Posts: 12
Rep Power: 0
Trajork is on a distinguished road
Trajork Trajork is offline
Junior Member
 
Join Date: Sep 2010
Posts: 12
Rep Power: 0
Trajork is on a distinguished road
Default Re: Slightly crazy 980 nm laser experiment

Thing is, I've looked up examples of vision damage from 650 nm lasers and it seems that the only way people have ever damaged their vision from those is by forcing their eyes open and staring at them for minutes on end, and even then literally every one of them recovered full vision within a few weeks. I'm aware of the blink reflex issue, but it looks like it has to be overridden for visible light to cause damage, so I don't know why IR would be any more dangerous based on that. By the way, what's the maximum permissible exposure to near-infrared light? Maybe I could calculate the longest safe exposure time, assuming it's really 10 mW instead of 5, and limit myself to that? (and the experiment won't happen if I get some result <1 sec or so)

edit: The first thing I'll try will be to see if the dot is visible on paper or a wall; this more dangerous experiment will happen if I don't see anything from a diffuse reflection.

Last edited by Trajork; 09-30-2010 at 07:21 AM.
Trajork is offline  
Old 09-30-2010, 08:49 AM #5
Addonex's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: United States
Posts: 299
Rep Power: 31
Addonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond repute
Addonex Addonex is offline
Class 2 Laser
Addonex's Avatar
 
Join Date: Aug 2010
Location: United States
Posts: 299
Rep Power: 31
Addonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond reputeAddonex has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

If you are going to do something potentially dangerous like that (who knows if that pointer is really overspec 50mW?) at least try it by pointing it near your eye instead of into it. The obvious answer though is just don't do it.. You wouldn't point a potentially loaded firearm at your face would you? Lasers need to be treated with respect and caution, once you stop being afraid of their potential consequences is when your safety practices will slip and accidents will happen.
Addonex is offline  
Old 09-30-2010, 09:33 AM #6
weeba2kv's Avatar
Class 3R Laser
 
Join Date: Sep 2010
Location: The netherlands
Posts: 1,374
Rep Power: 34
weeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond repute
weeba2kv weeba2kv is offline
Class 3R Laser
weeba2kv's Avatar
 
Join Date: Sep 2010
Location: The netherlands
Posts: 1,374
Rep Power: 34
weeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

And here i come again DONT aim in your eyes even it's a 5 mW cause i used to have a 5 mW red and on 1 eye i have still see the damage it did to my right eye ( 15 years ago )
5 mW is still enough to do damage so take the sheet of paper.

Last edited by weeba2kv; 09-30-2010 at 10:54 AM.
weeba2kv is offline  
Old 09-30-2010, 12:18 PM #7
Morgan's Avatar
Class 3R Laser
 
Join Date: Feb 2009
Location: Bedfordshire, UK
Posts: 2,178
Rep Power: 243
Morgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond repute
Morgan Morgan is offline
Class 3R Laser
Morgan's Avatar
 
Join Date: Feb 2009
Location: Bedfordshire, UK
Posts: 2,178
Rep Power: 243
Morgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond reputeMorgan has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

Shining a laser into your eye? You're an idiot to even consider posting this.

I smell troll...

M
__________________
Do you want to build a laser? But, you know nothing about what is needed, right? Then you need to try the, "I Want to Build a Laser", thread! Everything you wanted to know to get started and more! An easy guide as to what you need and why!

Another good guide can be found here from goninanbl00d - "First Build Guide"
(Temporarily Unavailable)

" ... Lasing on a sunny afternoon." The Kinks.

"Lasing on a Sunday Afternoon." Queen.

" Lase-y Sunday afternoon, I've got no mind to worry... " Small Faces.

"... Yes. It died during the night... So I cooked it! It was very nice." My Dad

Assembly services, parts machined and consultations for specialist builds available. PM me if you need something. Thanks.
Morgan is offline  
Old 09-30-2010, 01:29 PM #8
bobhaha's Avatar
Class 3B Laser
 
Join Date: May 2009
Location: Sydney, Australia
Posts: 3,256
Rep Power: 360
bobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond repute
bobhaha bobhaha is offline
Class 3B Laser
bobhaha's Avatar
 
Join Date: May 2009
Location: Sydney, Australia
Posts: 3,256
Rep Power: 360
bobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond reputebobhaha has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

1. The blink reflex will not protect you from IR light, because your eyes can not see it, therefore it will not trigger the blink reflex
2. lasers do come over spec and can cause permanent eye damage even at powers less then 10mw
3. the Maximum permissible epxosure is less <5mw you idiot... its not a meaure of length of time.
4. This is idioitic, and laser pointed into the eye will cause damage one way or another. To do so is 100% not safe, and frankly quite stupid.

Lastly GTFO troll...
__________________
Lasers!
10.6um - >40W CO2 Laser - 25W RF excited CO2 Laser*
685nm - Being built!
660nm - 250mW LOC PowerLight B50 Host - 100mW WL pulsar
635nm - 430mW C6 Host*
632.8nm - Red He-Ne laser ~1mW
593.5nm - Regal 5
542.8nm - Green He-Ne laser ~2.5mW
532nm - 620mW+ lasersman Firedragon III* - 100mW PGL-III-M from JETLASERS* - 70mW Rayfoss Host*
~~~ - 175mW Rayfoss Host - <5mW WL Core - 55mW DinoDirect review laser*

488nm - On the hoist
473nm - 2x CNI lab lasers ~40mW
445nm - 3W Big Boyz Laser - >1.1W Cree C6 Host - 650mW WL Arctic
405nm - 65mW GLP-405 Aquarius host - 160mW 6x Blu-ray MXDL Host
Total: 71,868.5 mW

Goggles!
Laser glow LSG-532-Sport protective eye goggles OD 7+ 190-532nm HIGHLY RECOMMENDED!!
Jetlasers wrap around 190-540nm OD4+ goggles*
Eagle Pair Red OD4+ goggles
Scopeguy20 Blublockers for 405nm lasers!

* indicates a review has been done, on this item.

Check out my How to Build a Selectable Dummy Load Thread!
bobhaha is offline  
Old 09-30-2010, 01:30 PM #9
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,847
Rep Power: 45397
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
lasersbee lasersbee is offline
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,847
Rep Power: 45397
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

Quote:
Originally Posted by Trajork View Post
I've recently gotten into cheap lower-powered lasers, and I'm interested in the limits of human vision. To that end, I just bought a 5 mW 980 nm laser off the Internet. As I understand it, looking directly into lasers of that power for a time on the order of a few seconds should be fairly safe. If I do this with the laser I just bought, what do you think will happen?

Possibilities:
-I see a red light when I shine it into my eye.
-980 nm is totally invisible, and I see nothing.
-I fry my eye, due to some difference between the 650 nm lasers that are virtually harmless and 980 nm light at the same intensity
Are you out of your F@#king mind...
How do you know for a certainty that that Laser is 5mW and
not >5mW...

Just pondering your question leads me to believe you don't
have the equipment to verify your Laser...

You need to do a lot of research and reading...IMO

You are either very stupid or a TROLL...


Jerry
__________________

J.BAUER Electronics Home Page

LaserBee Laser Power Meter Products meet your needs
at affordable Prices:
See them all here on LPF

LaserBee Power Meter products ALWAYS in Stock
and ready to ship

Also available on eBay:Check availability here..

Subsidary: Pharma Electronic Solutions


This banner is available to and can be copied/used FREE by any LaserBee owner
lasersbee is offline  
Old 09-30-2010, 02:05 PM #10
Kevlar's Avatar
Class 3R Laser
 
Join Date: Apr 2010
Location: Mass
Posts: 1,353
Rep Power: 101
Kevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond repute
Kevlar Kevlar is offline
Class 3R Laser
Kevlar's Avatar
 
Join Date: Apr 2010
Location: Mass
Posts: 1,353
Rep Power: 101
Kevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond reputeKevlar has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

Quote:
Originally Posted by weeba2kv View Post
And here i come again DONT aim in your eyes even it's a 5 mW cause i used to have a 5 mW red and on 1 eye i have still see the damage it did to my right eye ( 15 years ago )
5 mW is still enough to do damage so take the sheet of paper.
What is up with your avatar, are really shining that at your face?

Kevlar is offline  
Old 09-30-2010, 02:39 PM #11
weeba2kv's Avatar
Class 3R Laser
 
Join Date: Sep 2010
Location: The netherlands
Posts: 1,374
Rep Power: 34
weeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond repute
weeba2kv weeba2kv is offline
Class 3R Laser
weeba2kv's Avatar
 
Join Date: Sep 2010
Location: The netherlands
Posts: 1,374
Rep Power: 34
weeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

eh yeah it's 50mW green , maybe i should remove it change it cause people might do the same as i did once...

Last edited by weeba2kv; 09-30-2010 at 02:43 PM.
weeba2kv is offline  
Old 09-30-2010, 02:45 PM #12
Pontiacg5's Avatar
Class 3B Laser
 
Join Date: Dec 2007
Location: Ottawa, Kansas
Posts: 2,524
Rep Power: 121
Pontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond repute
Pontiacg5 Pontiacg5 is offline
Class 3B Laser
Pontiacg5's Avatar
 
Join Date: Dec 2007
Location: Ottawa, Kansas
Posts: 2,524
Rep Power: 121
Pontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond reputePontiacg5 has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

:facepalm:
Pontiacg5 is offline  
Old 09-30-2010, 04:36 PM #13
Junior Member
 
Join Date: Sep 2010
Posts: 12
Rep Power: 0
Trajork is on a distinguished road
Trajork Trajork is offline
Junior Member
 
Join Date: Sep 2010
Posts: 12
Rep Power: 0
Trajork is on a distinguished road
Default Re: Slightly crazy 980 nm laser experiment

Didn't exactly expect anybody to think this was a good idea, but believe it or not experiments of this sort have been done (Sliney et al basically tried this, and didn't hurt any of their subjects). But they obviously had much better equipment, and even a 5 mW laser appears that it would deal out easily 10+ times the MPE for an exposure even in the 0.25 s range now that I look up that information.

So I'll propose something marginally less stupid than my original idea: glass has a reflectivity of around 4%. If I were to look at the reflection from a glass surface, I should be able to reduce the amount of power entering my eye by a factor of ~25. Granted, still probably above the MPE, but could that reduce a class IIIa laser to more like a class II? I know it'd still be really risky, but does it seem likely that that would cause injury?
Trajork is offline  
Old 09-30-2010, 04:46 PM #14
Drivinfast247's Avatar
Class 2 Laser
 
Join Date: Nov 2009
Location: Shelby Township, MI
Posts: 331
Rep Power: 50
Drivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond repute
Drivinfast247 Drivinfast247 is offline
Class 2 Laser
Drivinfast247's Avatar
 
Join Date: Nov 2009
Location: Shelby Township, MI
Posts: 331
Rep Power: 50
Drivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond reputeDrivinfast247 has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

Use a fork, its much faster.
Drivinfast247 is offline  
Old 09-30-2010, 05:05 PM #15
Toaster's Avatar
Class 3R Laser
 
Join Date: Aug 2010
Posts: 1,249
Rep Power: 0
Toaster is infamous around these partsToaster is infamous around these partsToaster is infamous around these partsToaster is infamous around these partsToaster is infamous around these partsToaster is infamous around these parts
Toaster Toaster is offline
Class 3R Laser
Toaster's Avatar
 
Join Date: Aug 2010
Posts: 1,249
Rep Power: 0
Toaster is infamous around these partsToaster is infamous around these partsToaster is infamous around these partsToaster is infamous around these partsToaster is infamous around these partsToaster is infamous around these parts
Default Re: Slightly crazy 980 nm laser experiment

You guys think every one is a troll... Maybe he is just not the brightest light bulb. you could try un focusing it as well if you do decide to do the dumb thing

I would advise not to do it. Try:
1. turn shower on hot an close door and windows and look for beam and/or dot.
2. Use incense instead and do the same.
Toaster is offline  
Old 09-30-2010, 05:06 PM #16
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,847
Rep Power: 45397
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
lasersbee lasersbee is offline
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,847
Rep Power: 45397
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
Default Re: Slightly crazy 980 nm laser experiment

Quote:
Originally Posted by Trajork View Post
Didn't exactly expect anybody to think this was a good idea, but believe it or not experiments of this sort have been done (Sliney et al basically tried this, and didn't hurt any of their subjects). But they obviously had much better equipment, and even a 5 mW laser appears that it would deal out easily 10+ times the MPE for an exposure even in the 0.25 s range now that I look up that information.

So I'll propose something marginally less stupid than my original idea: glass has a reflectivity of around 4%. If I were to look at the reflection from a glass surface, I should be able to reduce the amount of power entering my eye by a factor of ~25. Granted, still probably above the MPE, but could that reduce a class IIIa laser to more like a class II? I know it'd still be really risky, but does it seem likely that that would cause injury?
What is the actual purpose and need for you to shine
a LASER BEAM into your eye...

What will you accomplish by it...

Don't you know that your eye has a lens that will
focus the beam onto your retina...

Like was referenced above... even a pointy
stick will work if your objective is to damage
your eyesight...

To even mention wanting to shine a Laser into your
own eye on a Laser related Forum is Moronic..

If you want to look into the Laser's aperture.... Shine
the Laser into a camera and record it or watch it on
a monitor...


[EDIT]
@ toaster.....
If you have no real life Facts or experience...
I wouldn't be giving Laser Related Safety advice like that...

Quote:
Originally Posted by Toaster View Post
You guys think every one is a troll... Maybe he is just not the brightest light bulb. you could try un focusing it as well if you do decide to do the dumb thing

I would advise not to do it. Try:
1. turn shower on hot an close door and windows and look for beam and/or dot.
2. Use incense instead and do the same.

Jerry
__________________

J.BAUER Electronics Home Page

LaserBee Laser Power Meter Products meet your needs
at affordable Prices:
See them all here on LPF

LaserBee Power Meter products ALWAYS in Stock
and ready to ship

Also available on eBay:Check availability here..

Subsidary: Pharma Electronic Solutions


This banner is available to and can be copied/used FREE by any LaserBee owner

Last edited by lasersbee; 09-30-2010 at 05:13 PM.
lasersbee is offline  
Closed Thread

Tags
dumb, idiotic





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


LinkBacks (?)
LinkBack to this Thread: http://laserpointerforums.com/f40/slightly-crazy-980-nm-laser-experiment-56198.html
Posted By For Type Date
980 nm laser pointer,DealToWorld:Cool Gadgets at the Right Price - Site-Wide Free Shipping This thread Refback 06-25-2012 11:07 PM










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 01:21 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