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 > Safety & Legal Issues



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



Reply
 
LinkBack Thread Tools Display Modes
Old 12-23-2011, 09:29 PM #1
Junior Member
 
Join Date: Nov 2011
Posts: 5
Rep Power: 0
SilverOne is on a distinguished road
SilverOne SilverOne is offline
Junior Member
 
Join Date: Nov 2011
Posts: 5
Rep Power: 0
SilverOne is on a distinguished road
Default Pointing an 8MW against a window at an angle

Hello!

I've bought a little 8mw green laser from optronics, i'm wondering if pointing this at an angle to a window will reflect some of the light back to me and be dangerous.

Thank You!
Best Regards


SilverOne is offline   Reply With Quote







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







Old 12-23-2011, 09:55 PM #2
InfinitusEquitas's Avatar
Class 4 Laser
 
Join Date: Mar 2011
Location: 20 Minutes from NYC.
Posts: 16,004
Rep Power: 10341
InfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond repute
Send a message via AIM to InfinitusEquitas Send a message via MSN to InfinitusEquitas Send a message via Yahoo to InfinitusEquitas
InfinitusEquitas InfinitusEquitas is offline
Class 4 Laser
InfinitusEquitas's Avatar
 
Join Date: Mar 2011
Location: 20 Minutes from NYC.
Posts: 16,004
Rep Power: 10341
InfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond repute
Send a message via AIM to InfinitusEquitas Send a message via MSN to InfinitusEquitas Send a message via Yahoo to InfinitusEquitas
Default Re: Pointing an 8MW against a window at an angle

Pointing an 8MW (MegaWatt) laser at anything is a bad idea. An 8mW (milliwatt) laser is a difference story lol. Specular reflection from an 8mW laser is not an issue.

To anwer your question, angle of incidence is equal to the angle of reflection...



http://lukewest.edublogs.org/2009/09/24/reflection/

Last edited by InfinitusEquitas; 12-23-2011 at 09:57 PM.
InfinitusEquitas is offline   Reply With Quote
Old 12-23-2011, 10:04 PM #3
ShortyInCanada's Avatar
Class 2M Laser
 
Join Date: Mar 2011
Location: Beautiful British Columbia
Posts: 617
Rep Power: 552
ShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond repute
ShortyInCanada ShortyInCanada is offline
Class 2M Laser
ShortyInCanada's Avatar
 
Join Date: Mar 2011
Location: Beautiful British Columbia
Posts: 617
Rep Power: 552
ShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond reputeShortyInCanada has a reputation beyond repute
Default Re: Pointing an 8MW against a window at an angle

IF it were truly a 8mw AND you were to hold it at the perfect angle a little of the beam might bounce back and if you stare at it you could cause some mild problems but it would be so unlikely that you could dismiss it.
However, I am interested to know where you got a 8mw 532nm laser from.
Is it a properly tested overpowered 5mw ? Usually the "5mw" ones are much more than just 8mw. more in the order of 15- 35mw I believe is more likely.
So if you are playing with a much higher power instrument then OF COURSE the dangers will be so much greater. What are you pointing through a window at ? If you are worried about the reflected beam then you are pointing it at something the same height as you are at and that means that it could be falling well within eye level of others on the other side of the window.(Unless you are in a multi-story building.)
More importantly is that if you aim it perfectly the bounce back beam could feed directly back into the laser and overpower it causing damage. Pfffft. It's gone.
But a low power laser wouldn't have much of an issue with reflection.

Geez Infinitus. Respond faster than me why don't ya ?
I'm feeling older all the time.

Last edited by ShortyInCanada; 12-23-2011 at 10:05 PM.
ShortyInCanada is offline   Reply With Quote
Old 12-23-2011, 10:08 PM #4
InfinitusEquitas's Avatar
Class 4 Laser
 
Join Date: Mar 2011
Location: 20 Minutes from NYC.
Posts: 16,004
Rep Power: 10341
InfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond repute
Send a message via AIM to InfinitusEquitas Send a message via MSN to InfinitusEquitas Send a message via Yahoo to InfinitusEquitas
InfinitusEquitas InfinitusEquitas is offline
Class 4 Laser
InfinitusEquitas's Avatar
 
Join Date: Mar 2011
Location: 20 Minutes from NYC.
Posts: 16,004
Rep Power: 10341
InfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond repute
Send a message via AIM to InfinitusEquitas Send a message via MSN to InfinitusEquitas Send a message via Yahoo to InfinitusEquitas
Default Re: Pointing an 8MW against a window at an angle

Quote:
Originally Posted by ShortyInCanada View Post
Geez Infinitus. Respond faster than me why don't ya ?
I'm feeling older all the time.
Sorry buddy, I type fast
InfinitusEquitas is offline   Reply With Quote
Old 12-23-2011, 10:19 PM #5
Bluefan's Avatar
Class 3R Laser
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Bluefan Bluefan is offline
Class 3R Laser
Bluefan's Avatar
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Default Re: Pointing an 8MW against a window at an angle

8mW is above what is safe, I'd recommend to treat it as the class 3b laser that it is. I think 5mW is pushing the limit, pushing it to 8mW is a bad idea. Of course there are safe situations, but don't think you're always safe because it's only 8mW, that would be very wrong.
__________________
Highlights of my laser collection:
Big Sky Er:YAG - HP 8168D 1480-1570nm tunable laser source - Spectra Physics 3800 modelocked Nd:YAG - lots of IR diodes and bars - LPC-815 200mW 650nm - DL 6353TL 635nm 5mW - HP5501A stabilized HeNe - 2x Melles Griot 05-STP-910 stabilized HeNe - Spectra Physics 3500 Dye laser - REO 30536 543nm 2mW - Coherent DPY315-100 532nm 100mW SLM DPSS - Lexel 85 - 3x B&W tek 10mW 473nm - 445nm 3W Bluefan Sabre module - SF-AW210 150mW 405nm - DPSS inc 355nm 100mW Q-switched

Power meters:
Laser precision RkP-575 w/ RK-5710 - Ophir 10A-V2-SH - Ophir OEM 20C-A - HP 8152A w/ 2x 81521B - Coherent 212 - Anritsu ML93 w/ MA98A - 2x laser precision AM-400 - Leader LPM-8000

Bluefan is offline   Reply With Quote
Old 12-23-2011, 10:52 PM #6
Junior Member
 
Join Date: Nov 2011
Posts: 5
Rep Power: 0
SilverOne is on a distinguished road
SilverOne SilverOne is offline
Junior Member
 
Join Date: Nov 2011
Posts: 5
Rep Power: 0
SilverOne is on a distinguished road
Default Re: Pointing an 8MW against a window at an angle

Thank you all for your responses

I bought the greenie from jack at optotronics.com, so we can be reasonably sure it's outputting 8mW, instead of the 8 MW i told you

i was pretty sure it was reasonably safe but i wanted to be completely sure. and i'm also sure there is no one on the other side of the window because i like in a pretty tall building, and yes i'm always looking out for airplanes!

since this is a window, i believe it would reflect back less than 50% of the light, meaning it would still be under 5mW. i would of course blink.

Best Regards
SilverOne is offline   Reply With Quote
Old 12-23-2011, 11:13 PM #7
Omnipotent
 
Join Date: Jul 2008
Location: Bangor Pennsylvania Untited States
Posts: 1,121
Rep Power: 439
joeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond repute
Send a message via AIM to joeyss
joeyss joeyss is offline
Omnipotent
 
Join Date: Jul 2008
Location: Bangor Pennsylvania Untited States
Posts: 1,121
Rep Power: 439
joeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond reputejoeyss has a reputation beyond repute
Send a message via AIM to joeyss
Default Re: Pointing an 8MW against a window at an angle

Windows are 10%-20% reflective.
__________________
Chrome 12x 405nm pen @ 475mw by Ra_pierce
~30mw newish 532nm Pen
~100mw IQS 532nm Pen
50mw 660nm DX pen
"5mw" overspec IQS Blu-ray does around 50mw
Spartan 589nm 50mw likely higher no lpm to test but skin feels warm.
3.107 watt 445nm zero laser
473nm labby peak at 34 mw
808nm over a watt from a 400mw green that came loose and lost the crystal set
980nm with weak cyan line focousable
joeyss is offline   Reply With Quote
Old 12-24-2011, 02:04 AM #8
InfinitusEquitas's Avatar
Class 4 Laser
 
Join Date: Mar 2011
Location: 20 Minutes from NYC.
Posts: 16,004
Rep Power: 10341
InfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond repute
Send a message via AIM to InfinitusEquitas Send a message via MSN to InfinitusEquitas Send a message via Yahoo to InfinitusEquitas
InfinitusEquitas InfinitusEquitas is offline
Class 4 Laser
InfinitusEquitas's Avatar
 
Join Date: Mar 2011
Location: 20 Minutes from NYC.
Posts: 16,004
Rep Power: 10341
InfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond reputeInfinitusEquitas has a reputation beyond repute
Send a message via AIM to InfinitusEquitas Send a message via MSN to InfinitusEquitas Send a message via Yahoo to InfinitusEquitas
Default Re: Pointing an 8MW against a window at an angle

Quote:
Originally Posted by joeyss View Post
Windows are 10%-20% reflective.
I've never been able to measure higher than 10% personally.
InfinitusEquitas is offline   Reply With Quote
Old 12-24-2011, 05:38 AM #9
AAlasers's Avatar
Class 1M Laser
 
Join Date: Jul 2010
Location: Alberta, Canada
Posts: 190
Rep Power: 11
AAlasers is just really niceAAlasers is just really niceAAlasers is just really niceAAlasers is just really nice
AAlasers AAlasers is offline
Class 1M Laser
AAlasers's Avatar
 
Join Date: Jul 2010
Location: Alberta, Canada
Posts: 190
Rep Power: 11
AAlasers is just really niceAAlasers is just really niceAAlasers is just really niceAAlasers is just really nice
Default Re: Pointing an 8MW against a window at an angle

One pane of perfectly clean and perfectly flat glass should reflect 8% light (without optical losses in the glass), in two very closely grouped dots. Each side of the window pane will reflect 4%. If it's a double pane window, it can reflect 16%, but there would be an optical loss in passing through the glass. Essentially, you have little to worry about. I've shone several-hundred milliwatt lasers at glass, simply being careful or where it might reflect (although I wouldn't do this if you are clumsy or inexperienced, and even then you always want to be wary of reflections off anything). You would not have to worry about this with an 8mw laser, but perhaps with a >500mw or class IV laser (this is where the risk would become quite significant, but you should exercise the caution you would have with a class IV laser, with any laser that is perhaps >50mw).

I am not disregarding laser safety, but I believe many over react in saying an 8mw laser is dangerous; it's not.

Thanks,

AAlasers
__________________
Wavelengths -

403nm
405.9nm
438.8nm
441.5nm
452.3nm
468.5nm
520nm - soon
531.8nm
532.2nm
532.54nm

637.6nm
641.4nm
648.3nm
658.7nm
663.95nm
780nm
808nm
1064.4nm
1322.5nm

Last edited by AAlasers; 12-24-2011 at 05:52 AM.
AAlasers is offline   Reply With Quote
Old 12-24-2011, 10:38 AM #10
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,784
Rep Power: 42214
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 online now
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,784
Rep Power: 42214
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: Pointing an 8MW against a window at an angle

Quote:
Originally Posted by AAlasers View Post
I am not disregarding laser safety, but I believe many over react in saying an 8mw laser is dangerous; it's not.

Thanks,

AAlasers
We are not all experienced Laser Technician/Engineers/Gurus....
and to say we overreact when it comes to Laser Safety pointed
to a Laser Noob is just plain irresponsible.

It is always better to be TOO safe than not safe enough when
dealing with Lasers... even 8mW Lasers...


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; 12-24-2011 at 10:39 AM. Reason: Spelling errors
lasersbee is online now   Reply With Quote
Old 12-24-2011, 11:40 AM #11
borgqueenx's Avatar
Class 3R Laser
 
Join Date: Jun 2008
Location: Netherlands
Posts: 1,664
Rep Power: 183
borgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond repute
Send a message via MSN to borgqueenx
borgqueenx borgqueenx is offline
Class 3R Laser
borgqueenx's Avatar
 
Join Date: Jun 2008
Location: Netherlands
Posts: 1,664
Rep Power: 183
borgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond repute
Send a message via MSN to borgqueenx
Default Re: Pointing an 8MW against a window at an angle

Quote:
Originally Posted by Bluefan View Post
8mW is above what is safe, I'd recommend to treat it as the class 3b laser that it is. I think 5mW is pushing the limit, pushing it to 8mW is a bad idea. Of course there are safe situations, but don't think you're always safe because it's only 8mW, that would be very wrong.
meh, id just say anything below 20mW is not dangerous, unless you point it directly to your eye. Reflections from mirrors are a bit on the dangerous side okay, but nothing to wild.
And reflections from glass is not dangerous at all, when dealing with <20mW.

but well.....act as an adult when holding a laser.
__________________
Me against China: I have a LPM and i'm not afraid to use it!

My Photonic Collection:
600mW 532nm Jetlaser Pointer(Peak 667mW)
2.5W RGB Projector
6,9W 445nm Burning Monster.

Last edited by borgqueenx; 12-24-2011 at 12:48 PM.
borgqueenx is offline   Reply With Quote
Old 12-24-2011, 12:04 PM #12
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,784
Rep Power: 42214
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 online now
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,784
Rep Power: 42214
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: Pointing an 8MW against a window at an angle

Quote:
Originally Posted by borgqueenx View Post
meh, id just say anything below 20mW is not dangerous, unless you point it directly to your eye. Reflections from mirrors are a bit on the dangerous side okay, but nothing to wild.
And reflections from glass is not dangerous at all.

but well.....act as an adult when holding a laser.
Pray tell... did you pull these nuggets of wisdom out of your A$$....

To post that is so irresponsible that you should be ClueByFoured
right here on LPF....

Seems like you have learned absolutely nothing about Laser
Safety even with all the Thread questions that you have asked
since joining the Forum...


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; 12-24-2011 at 12:21 PM. Reason: Spelling errors
lasersbee is online now   Reply With Quote
Old 12-24-2011, 12:44 PM #13
borgqueenx's Avatar
Class 3R Laser
 
Join Date: Jun 2008
Location: Netherlands
Posts: 1,664
Rep Power: 183
borgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond repute
Send a message via MSN to borgqueenx
borgqueenx borgqueenx is offline
Class 3R Laser
borgqueenx's Avatar
 
Join Date: Jun 2008
Location: Netherlands
Posts: 1,664
Rep Power: 183
borgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond reputeborgqueenx has a reputation beyond repute
Send a message via MSN to borgqueenx
Default Re: Pointing an 8MW against a window at an angle

Quote:
Originally Posted by lasersbee View Post
Pray tell... did you pull these nuggets of wisdom out of your A$$....

To post that is so irresponsible that you should be ClueByFoured
right here on LPF....

Seems like you have learned absolutely nothing about Laser
Safety even with all the Thread questions that you have asked
since joining the Forum...


Jerry
i have learned alot, but also experienced alot. shining at stuff usally increases divergence as well when it bounces back, plus how long you get the beam in your eye also counts ect ect ect, you know this yourself as well.
I said it is dangerous pointing it directly to eyes. but heck that is even dangerous with a 1mW pointer. who knows if the guy cant have sudden light changes?
but with <20mW its my opinion that it cant be a real dangerous laser.

please, be a bit nicer to me the next time, and ask why im saying that, instead of voting for a ban immediatly.

this "wisdom" is pulled by experience, not by only making calculations.

Oh and you marked "And reflections from glass is not dangerous at all." red.
i ofcource ment this with a <20mW pointer. NOT globally.
sorry about that, will edit the post.
__________________
Me against China: I have a LPM and i'm not afraid to use it!

My Photonic Collection:
600mW 532nm Jetlaser Pointer(Peak 667mW)
2.5W RGB Projector
6,9W 445nm Burning Monster.

Last edited by borgqueenx; 12-24-2011 at 12:48 PM.
borgqueenx is offline   Reply With Quote
Old 12-24-2011, 01:59 PM #14
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,784
Rep Power: 42214
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 online now
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,784
Rep Power: 42214
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: Pointing an 8MW against a window at an angle

If you can GUARANTEE that anyone will not make a mistake
and inadvertently shine a reflected 19mW (<20mW)laser beam
into their eye for less time than it could cause any eye damage
under any circumstances... then I could possibly agree with your
understanding of Laser safety practices.

If not... then I would err on the side that shows me a safer
way to handle Lasers Safely and especially to new members
that are looking for advice to keep their eyesight undamaged...

BTW... you are allowed to handle your lasers in any way you
want... They are your Eyes are not mine...


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; 12-24-2011 at 02:00 PM. Reason: Spelling errors
lasersbee is online now   Reply With Quote
Old 12-24-2011, 05:05 PM #15
AAlasers's Avatar
Class 1M Laser
 
Join Date: Jul 2010
Location: Alberta, Canada
Posts: 190
Rep Power: 11
AAlasers is just really niceAAlasers is just really niceAAlasers is just really niceAAlasers is just really nice
AAlasers AAlasers is offline
Class 1M Laser
AAlasers's Avatar
 
Join Date: Jul 2010
Location: Alberta, Canada
Posts: 190
Rep Power: 11
AAlasers is just really niceAAlasers is just really niceAAlasers is just really niceAAlasers is just really nice
Default Re: Pointing an 8MW against a window at an angle

Quote:
Originally Posted by lasersbee View Post
We are not all experienced Laser Technician/Engineers/Gurus....
and to say we overreact when it comes to Laser Safety pointed
to a Laser Noob is just plain irresponsible.

It is always better to be TOO safe than not safe enough when
dealing with Lasers... even 8mW Lasers...


Jerry
Very true, but you seem to be ignoring the rest of what I said, in my last post. I was referring to dealing with reflections from windows, and other reflective objects. I never said to be a complete idiot with a laser, as you insinuate, or to completely disregard laser safety.
I am very well aware that not everyone who owns a laser is experienced in it's safety, and of course there is a certain level of respect to be had for lasers, but a laser of such a low power level, perhaps <20mw as borgqueenx suggests, is not anything you must worry extensively about.

That being said, it is probably more wise to suggest that one would assume all lasers to be highly dangerous, no matter the power level; that way they will develop good habits in dealing with lasers. Additionally, one might make the mistake of assuming a high powered laser as having a lower power then it does, which is a truly grave mistake in the guise of safety. Considering all do not have the experience and judgement regarding laser safety that you or I might have, I ought to agree with you and say all lasers are to be treated as dangerous devices - particularly directed to the inexperienced.

My apologies if I seemed a little irresponsible in my last post, I had no intention of causing hard feelings, or making the inexperienced regard laser safety to a lesser degree.

Thanks,

AAlasers
__________________
Wavelengths -

403nm
405.9nm
438.8nm
441.5nm
452.3nm
468.5nm
520nm - soon
531.8nm
532.2nm
532.54nm

637.6nm
641.4nm
648.3nm
658.7nm
663.95nm
780nm
808nm
1064.4nm
1322.5nm

Last edited by AAlasers; 12-24-2011 at 05:06 PM.
AAlasers is offline   Reply With Quote
Old 12-24-2011, 05:45 PM #16
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,784
Rep Power: 42214
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 online now
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,784
Rep Power: 42214
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: Pointing an 8MW against a window at an angle

Quote:
Originally Posted by AAlasers View Post
Very true, but you seem to be ignoring the rest of what I said, in my last post. I was referring to dealing with reflections from windows, and other reflective objects. I never said to be a complete idiot with a laser, as you insinuate, or to completely disregard laser safety.
I am very well aware that not everyone who owns a laser is experienced in it's safety, and of course there is a certain level of respect to be had for lasers, but a laser of such a low power level, perhaps <20mw as borgqueenx suggests, is not anything you must worry extensively about.

That being said, it is probably more wise to suggest that one would assume all lasers to be highly dangerous, no matter the power level; that way they will develop good habits in dealing with lasers. Additionally, one might make the mistake of assuming a high powered laser as having a lower power then it does, which is a truly grave mistake in the guise of safety. Considering all do not have the experience and judgement regarding laser safety that you or I might have, I ought to agree with you and say all lasers are to be treated as dangerous devices - particularly directed to the inexperienced.

My apologies if I seemed a little irresponsible in my last post, I had no intention of causing hard feelings, or making the inexperienced regard laser safety to a lesser degree.

Thanks,

AAlasers
No apologies needed... No hurt feelings here...
Can't agree more....
I was leaning towards exactly that...

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 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








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 06:04 PM.


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