Old 08-13-2009, 10:17 AM #1
Class 1M Laser
 
Join Date: Sep 2008
Posts: 230
Rep Power: 10
LiveRock is on a distinguished road
LiveRock LiveRock is offline
Class 1M Laser
 
Join Date: Sep 2008
Posts: 230
Rep Power: 10
LiveRock is on a distinguished road
Default Safety Google for a 40 watts DPSS 808 nm Laser

does OD rating make any sense for a high power laser like above?


LiveRock is offline   Reply With Quote


















Old 08-13-2009, 06:22 PM #2
Grix's Avatar
Class 3R Laser
 
Join Date: Dec 2008
Location: Norway
Posts: 2,204
Rep Power: 21897
Grix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond repute
Grix Grix is offline
Class 3R Laser
Grix's Avatar
 
Join Date: Dec 2008
Location: Norway
Posts: 2,204
Rep Power: 21897
Grix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond reputeGrix has a reputation beyond repute
Default Re: Safety Google for a 40 watts DPSS 808 nm Laser

afaik 1 OD makes the laser a thousand times weaker, so you need at least OD 10+ to be safe with such high powers
__________________
LasershowGen: Freemium laser show editor: http://pages.bitlasers.com/lasershowgen/
2nd place in ILDA Fenning Awards 2015

Helios - Open source, low cost Laser Projector DAC:
http://pages.bitlasers.com/helios/
Grix is offline   Reply With Quote
Old 08-13-2009, 06:59 PM #3
Jimmymcjimthejim's Avatar
Class 3R Laser
 
Join Date: Apr 2008
Location: South Florida
Posts: 1,543
Rep Power: 1193
Jimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond repute
Jimmymcjimthejim Jimmymcjimthejim is offline
Class 3R Laser
Jimmymcjimthejim's Avatar
 
Join Date: Apr 2008
Location: South Florida
Posts: 1,543
Rep Power: 1193
Jimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond repute
Default Re: Safety Google for a 40 watts DPSS 808 nm Laser

DPSS 808nm laser..?
OD1 reduces power by a factor of 10, OD2 reduces by a factor of 100, OD3 reduces by a factor of 1,000, and so on. You want to have at most 5mW going through the goggles, so you want to get at least OD4.
__________________
Current Lasers:
8??nm: 1050mA DIY Micro Sized
658nm: 2mW keychain pointer - DIY 80mA/350mA switchable in Altoids tin - 300mA DIY Micro Sized
632.8nm: 10mW Hughes HeNe - 15mW Melles Griot HeNe - 1mW Melles Griot bare tube
612nm: 5mW Meredith Instruments HeNe
594.1nm: 4mW Meredith Instruments HeNe
543nm: 2mW Melles Griot HeNe - <1mW Multimode 6" HeNe (He's cute!)
532nm: 5mW Lyra-G5 - 70mW DIY by Wannaburn
473nm: 5mW Lab Style
445nm: DIY 650mA in Sonar II Host
405nm: DIY LG 10X at 330mA with Ehgemus host and Microboost - CNI GLP-405 70mW

Last edited by Jimmymcjimthejim; 08-14-2009 at 01:28 AM.
Jimmymcjimthejim is offline   Reply With Quote
Old 08-13-2009, 07:29 PM #4
Class 4 Laser
 
Join Date: Nov 2008
Posts: 5,728
Rep Power: 3030
ElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond repute
ElektroFreak ElektroFreak is offline
Class 4 Laser
 
Join Date: Nov 2008
Posts: 5,728
Rep Power: 3030
ElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond repute
Default Re: Safety Google for a 40 watts DPSS 808 nm Laser

I HIGHLY recommend indirect viewing when using very high power diodes. Use a video camera, they work great. Do not look at the laser spot without the camera, expecially if you will be using it to pump crystals. A reflection from an uncoated portion of the crystal or from its surrounding metal mounts will be very dangerous.
__________________
Laser Resources (for n00bs and veterans alike!)

Sam's Laser FAQ (The Laser Bible)

http://www.repairfaq.org/sam/laserfaq.htm

RP Photonics Encyclopedia of Laser Physics and Technology

http://www.rp-photonics.com/encyclopedia.html

ULTIMATE DIY PROJECTOR REFERENCE

http://nqlasers.com/scannerreference...itle=Main_Page

SUCCESS is the best revenge.
ElektroFreak is offline   Reply With Quote
Old 08-13-2009, 07:31 PM #5
Prototype's Avatar
Class 3B Laser
 
Join Date: Jun 2009
Posts: 2,712
Rep Power: 3309
Prototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond repute
Prototype Prototype is offline
Class 3B Laser
Prototype's Avatar
 
Join Date: Jun 2009
Posts: 2,712
Rep Power: 3309
Prototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond reputePrototype has a reputation beyond repute
Default Re: Safety Google for a 40 watts DPSS 808 nm Laser

At LaserGlow's site, their OD5 Glasses have the wavelength and up to 500W. Others say up to 500mW, so I'm not sure if this is a typo, or the different wavelengths have different ratings or something.

Laserglow - Protective Laser Goggles - Fit-over

EDIT: Not to say that even with the glasses, you should look at the beam, that's a no-no.
__________________
Quote:
Originally Posted by MoonShad0w
No, bird, do not bite my F7 key off

Last edited by Prototype; 08-13-2009 at 07:38 PM.
Prototype is offline   Reply With Quote
Old 08-14-2009, 01:29 AM #6
Jimmymcjimthejim's Avatar
Class 3R Laser
 
Join Date: Apr 2008
Location: South Florida
Posts: 1,543
Rep Power: 1193
Jimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond repute
Jimmymcjimthejim Jimmymcjimthejim is offline
Class 3R Laser
Jimmymcjimthejim's Avatar
 
Join Date: Apr 2008
Location: South Florida
Posts: 1,543
Rep Power: 1193
Jimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond repute
Default Re: Safety Google for a 40 watts DPSS 808 nm Laser

I don't see any typos on the Laserglow goggle page..? For the first pair it says up to 500mW because it is OD2, second pair says over 500mW because it is OD7.
__________________
Current Lasers:
8??nm: 1050mA DIY Micro Sized
658nm: 2mW keychain pointer - DIY 80mA/350mA switchable in Altoids tin - 300mA DIY Micro Sized
632.8nm: 10mW Hughes HeNe - 15mW Melles Griot HeNe - 1mW Melles Griot bare tube
612nm: 5mW Meredith Instruments HeNe
594.1nm: 4mW Meredith Instruments HeNe
543nm: 2mW Melles Griot HeNe - <1mW Multimode 6" HeNe (He's cute!)
532nm: 5mW Lyra-G5 - 70mW DIY by Wannaburn
473nm: 5mW Lab Style
445nm: DIY 650mA in Sonar II Host
405nm: DIY LG 10X at 330mA with Ehgemus host and Microboost - CNI GLP-405 70mW
Jimmymcjimthejim is offline   Reply With Quote
Old 08-14-2009, 01:36 AM #7
Class 1M Laser
 
Join Date: Sep 2008
Posts: 230
Rep Power: 10
LiveRock is on a distinguished road
LiveRock LiveRock is offline
Class 1M Laser
 
Join Date: Sep 2008
Posts: 230
Rep Power: 10
LiveRock is on a distinguished road
Default Re: Safety Google for a 40 watts DPSS 808 nm Laser

Thinking of getting these:

Laser Glasses - Near Infrared (IR) protection 750-850nm :: Laser Safety :: Dragon Lasers



Is it ok for my purpose?
LiveRock is offline   Reply With Quote
Old 08-14-2009, 02:26 AM #8
Jimmymcjimthejim's Avatar
Class 3R Laser
 
Join Date: Apr 2008
Location: South Florida
Posts: 1,543
Rep Power: 1193
Jimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond repute
Jimmymcjimthejim Jimmymcjimthejim is offline
Class 3R Laser
Jimmymcjimthejim's Avatar
 
Join Date: Apr 2008
Location: South Florida
Posts: 1,543
Rep Power: 1193
Jimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond reputeJimmymcjimthejim has a reputation beyond repute
Default Re: Safety Google for a 40 watts DPSS 808 nm Laser

Those are only OD3. If that laser somehow gets through the goggles, then the reduced beam will be 40mW. Which can cause damage to the eye, particularily because you can barely see 808nm.
__________________
Current Lasers:
8??nm: 1050mA DIY Micro Sized
658nm: 2mW keychain pointer - DIY 80mA/350mA switchable in Altoids tin - 300mA DIY Micro Sized
632.8nm: 10mW Hughes HeNe - 15mW Melles Griot HeNe - 1mW Melles Griot bare tube
612nm: 5mW Meredith Instruments HeNe
594.1nm: 4mW Meredith Instruments HeNe
543nm: 2mW Melles Griot HeNe - <1mW Multimode 6" HeNe (He's cute!)
532nm: 5mW Lyra-G5 - 70mW DIY by Wannaburn
473nm: 5mW Lab Style
445nm: DIY 650mA in Sonar II Host
405nm: DIY LG 10X at 330mA with Ehgemus host and Microboost - CNI GLP-405 70mW
Jimmymcjimthejim is offline   Reply With Quote
Old 08-14-2009, 11:50 AM #9
dr-ebert's Avatar
Class 2M Laser
 
Join Date: Mar 2009
Posts: 713
Rep Power: 32
dr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond repute
dr-ebert dr-ebert is offline
Class 2M Laser
dr-ebert's Avatar
 
Join Date: Mar 2009
Posts: 713
Rep Power: 32
dr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond reputedr-ebert has a reputation beyond repute
Default Re: Safety Google for a 40 watts DPSS 808 nm Laser

As I've mentioned before, the OD rating is pretty irrelevant in this case. Generally an OD rating is used if you want to look at the spot in comfort for focusing. IT DOES NOT TELL YOU HOW MUCH ENERGY THE GLASSES CAN WITHSTAND, so focusing (pun) on OD is a grave error.

What you want here, is PROTECTION from a nearly invisible high-power beam. For that (and with 40W), you'll most likely need glasses that have a reflective coating for the wavelength in question, which are likely to cost a bundle.

So, forget all answers that mention "OD". Check this thread for someone (AndrewGW) who may give you more relevant info.
__________________
1. Quoting in forums should cost money. There are too many people who blindly quote the immediately preceding post, including already-quoted quotes.
2. Someone who tells others to "use the Search button" without providing a set of reasonably obvious search terms that actually returns the proper answer within the first results page should get banned for a week.
dr-ebert is offline   Reply With Quote
Old 08-17-2009, 04:05 AM #10
Class 1M Laser
 
Join Date: Sep 2008
Posts: 230
Rep Power: 10
LiveRock is on a distinguished road
LiveRock LiveRock is offline
Class 1M Laser
 
Join Date: Sep 2008
Posts: 230
Rep Power: 10
LiveRock is on a distinguished road
Default Re: Safety Google for a 40 watts DPSS 808 nm Laser

Thanks guys, for the insights..
LiveRock 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

























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 08:57 AM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC