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


























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

LPF Database of Laser Pointer Companies






Reply
 
LinkBack Thread Tools Display Modes
Old 05-19-2015, 03:04 AM #33
BowtieGuy's Avatar
Class 3R Laser
 
Join Date: Oct 2012
Location: S.E. Michigan U.S.A.
Posts: 2,483
Rep Power: 4741
BowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond repute
BowtieGuy BowtieGuy is offline
Class 3R Laser
BowtieGuy's Avatar
 
Join Date: Oct 2012
Location: S.E. Michigan U.S.A.
Posts: 2,483
Rep Power: 4741
BowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond reputeBowtieGuy has a reputation beyond repute
Default Re: Get Some Safety Goggles Now!

Hey Pi, I think you are correct on your math.
I think a quality pair of OD 4 would be fine.


__________________
405nm Solarstorm S3 (1.09W) • W/L Sonar (264mW)
405nm Custom JETLASERS Ti-B (1.08W)

445nm DIY Build "Ole Blue" (2.8W+)
445nm 1.3W JETLASERS PL-E (1.5W)
445nm Chrome pen (1.4W)

450nm Custom JETLASERS Ti-B (327mW)
462nm Solarforce T2 (2.1W)-link-
466nm "Maraxus" (2.3W)
515nm 30mW Ehgemus titanium (84mW)
520nm S.S. build (250mW) •50mW JETLASERS Ti-B (73mW)
520nm Ehgemus Custom (1.45W) •Coleman Jr. (234mW)
-link-
532nm 1.5W Goldenstar lab (3W)
532nm 500mW JETLASERS PL-E (754mW)
532nm 100mW JETLASERS Ti-B (161mW)
532nm 5mW "Eclipse" mints tin (54mW)

589nm 80mW CNI PGL-III-C (154mW)
589nm 50mW Dragonlasers Spartan (124mW)

594nm L/G Rigel-6 "LPF Anniv. Ed." (6.7mW)
635nm 20mW JETLASERS Ti (30mW)
638nm Custom JETLASERS Ti-B (232mW)-link-
638nm "Coleman Special" (260mW)-link-
638nm Build in sinner's "MS-SSW Stubby" (1.25W)
650nm W/L E2 (89mW) • Laserbtb PL-650 1000 (1W)
674nm 501B/Melles Griot U/K Build 20mW (Incoming)

LK-3D Projector

5W Ophir/dmm LPM

Last edited by BowtieGuy; 05-19-2015 at 03:10 AM.
BowtieGuy is offline   Reply With Quote








Old 05-19-2015, 03:05 AM #34
bobo99's Avatar
Class 1M Laser
 
Join Date: May 2011
Location: Ottawa,Canada
Posts: 128
Rep Power: 13
bobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to behold
bobo99 bobo99 is offline
Class 1M Laser
bobo99's Avatar
 
Join Date: May 2011
Location: Ottawa,Canada
Posts: 128
Rep Power: 13
bobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to beholdbobo99 is a splendid one to behold
Default Re: Get Some Safety Goggles Now!

Quote:
Originally Posted by Pi R Squared View Post
I think your math is off by two zeros, someone correct me if I am wrong, doesn't OD 4 reduce the light to 1/10000th and OD 5 to 1/100000th, I am sure I read this somewhere. Or am I off by one zero?

Anyway OD 4+ is good enough for a 3.2W laser, at least for viewing the dot up close, but at 3.2W I wouldn't trust just any glasses to protect from a direct hit.

Alan
Something seemed off. I was using the equations from here:

Certified Laser Safety Glasses

Confused the 0.001% with actually reducing it by 1/10,000th when it fact,
OD5 reduced by a factor of 0.00001, 1/10,000, 0.001% or a 3.2W laser to 0.032mW or safe levels. It's one of those days.
__________________
1.2W 445nm
100mW Waterproof 532nm
5 mW 532 nm x 4
300mW DD Elite 532 nm
275mw Small Police Host 650nm from lazerer!
DIY 800 mA 635 nm http://laserpointerforums.com/f40/2n...avy-70708.html
bobo99 is offline   Reply With Quote
Old 05-19-2015, 09:36 AM #35
Bionic-Badger's Avatar
Class 4 Laser
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,474
Rep Power: 1134
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: 5,474
Rep Power: 1134
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: Get Some Safety Goggles Now!

The equation is:

I_out = I_in * 10^{-x}

where Iin is the input power, Iout is the output power, and x is the OD.

OD 4 --> 10^-4 = 0.0001. I_in = 1W --> I_out = 0.1mW

For green lasers, the OD of goggles such as ARG-type goggles may seem really high (OD7), but it makes it a lot easier to work with for aligning and stuff.
__________________
You must spread some Reputation around before giving it to <person> again.
Bionic-Badger 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


LinkBacks (?)
LinkBack to this Thread: http://laserpointerforums.com/f53/get-some-safety-goggles-now-75799.html
Posted By For Type Date
Frankenstein Laser Engraver - 17 This thread Refback 01-25-2017 11:18 AM
15. Links &#8211; Capotexl This thread Refback 11-11-2016 02:09 PM
Frankenstein Laser Engraver &#8211; Capotexl This thread Refback 10-29-2016 09:05 PM
?????? ???????? ?????? «????????????» ? ????? 2 | ????????? This thread Refback 12-24-2015 05:13 AM
Frankenstein Laser Engraver - All This thread Refback 10-22-2015 06:55 PM
Lasers and dogs : lasers This thread Refback 06-07-2015 05:31 PM
Frankenstein Laser Engraver - Todo - Español This thread Refback 01-16-2015 10:06 AM
Frankenstein Laser Engraver - 17 - Deutsch This thread Refback 12-18-2014 02:48 PM
Frankenstein Laser Engraver - Todos - Português This thread Refback 12-16-2014 12:57 PM
15. Links | Capotexl This thread Refback 11-30-2014 07:54 PM
Frankenstein Laser Engraver - 17 - Español This thread Refback 11-23-2014 06:53 PM
Frankenstein Laser Engraver - 17 - Español This thread Refback 11-17-2014 02:34 PM
Frankenstein Laser Engraver - Alle - Deutsch This thread Refback 08-03-2014 05:19 PM
Stanwax Laser Safety Goggles? This thread Refback 03-17-2014 11:22 PM
ORDER PLACED - Its on its way - The Aiptasia incinerator This thread Refback 09-02-2013 09:54 AM
newest submissions : lasers This thread Refback 06-26-2013 09:30 PM
Frankenstein Laser Engraver This thread Refback 06-15-2013 09:47 PM
top scoring links : lasers This thread Refback 05-29-2013 01:39 AM
Links and files This thread Refback 05-14-2013 08:48 PM
Links and files This thread Refback 05-14-2013 06:59 PM
Frankenstein Laser Engraver This thread Refback 05-14-2013 06:15 PM
overview for yzhfdrfg This thread Refback 05-08-2013 06:16 PM
overview for dsmkam This thread Refback 05-08-2013 03:12 AM
all subreddits This thread Refback 05-07-2013 03:57 PM
Reddit - Lasers This thread Refback 05-07-2013 09:29 AM
Before you get into the more powerful lasers ~50mW, Purchase Laser Goggles. : lasers This thread Refback 05-05-2013 11:06 PM
rising submissions : all This thread Refback 05-05-2013 08:47 PM










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 08:11 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