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 09-08-2008, 07:57 PM #1
Ryo Ryo is offline
Class 1M Laser
 
Join Date: Aug 2008
Posts: 134
Rep Power: 10
Ryo is on a distinguished road
Ryo Ryo is offline
Class 1M Laser
 
Join Date: Aug 2008
Posts: 134
Rep Power: 10
Ryo is on a distinguished road
Default Safety Question: KES-400A <10mW

I just built up a KES-400A bluray laser, FlexDrive set to 30.4 mA (I changed out a 8k resistor for a 25k resistor to put the FlexDrive to 30mA-40mA current limit).

(Based on a chart made by DrLava) I'm estimating my output power to be around 9 mW.

How much risk is there for eye damage if I accidentally hit a reflective material? *When I say reflective I'm talking about white paper, or even a license plate, not a mirror. *The beam seems really bright to me so I wasn't sure if it's due to my eye adjusting to the wavelength or if I need to dial the laser down in power.

I'm just playing extra safe since my eyes are very important to me.

Thanks for you help!

edit: Just figured out the load circuit didn't give me a accurate current limit.. was actually at 36mA current draw, so output power was above 10 mW. Readjusted to 30.3 mA current limit.
This means I was looking at 11mW of power at too close for comfort.


__________________
Laser Built:
Red 150 mW Burner Laser
Violet (blu-ray) 10 mW Laser
Ryo is offline   Reply With Quote







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







Old 09-08-2008, 08:17 PM #2
thesk8nmidget's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Location: Eugene OR
Posts: 1,415
Rep Power: 92
thesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond repute
Send a message via MSN to thesk8nmidget
thesk8nmidget thesk8nmidget is offline
Class 3R Laser
thesk8nmidget's Avatar
 
Join Date: Jul 2008
Location: Eugene OR
Posts: 1,415
Rep Power: 92
thesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond reputethesk8nmidget has a reputation beyond repute
Send a message via MSN to thesk8nmidget
Default Re: Safety Question: KES-400A <10mW

at a power level that low you will have a much better chance at not having serious eye damage! but it still can happen

so take all the precautions you can.

a very quick reflection from say glass may hit your eye and your body should blink fast enough to not cause damage.

but dont go trying that out.
__________________
-Josh
thesk8nmidget is offline   Reply With Quote
Old 09-08-2008, 08:19 PM #3
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 8,042
Rep Power: 40065
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: 8,042
Rep Power: 40065
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: Safety Question: KES-400A <10mW

11mW of Violet can't be all that bright :-? It shouldn't be much brighter than a 5mW red . Anyway, you probably will be safe from specular reflections with 10mW i.e. reflections from paper or other white surfaces, although a direct beam exposure may cause damage.

-Adam
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 09-08-2008, 09:54 PM #4
Ryo Ryo is offline
Class 1M Laser
 
Join Date: Aug 2008
Posts: 134
Rep Power: 10
Ryo is on a distinguished road
Ryo Ryo is offline
Class 1M Laser
 
Join Date: Aug 2008
Posts: 134
Rep Power: 10
Ryo is on a distinguished road
Default Re: Safety Question: KES-400A <10mW

Thanks guys.
This is good.. since I was also thinking of making this for a pointer in presentations. Was wondering if the reflective nature of a projector pull down screen would cause issues.
__________________
Laser Built:
Red 150 mW Burner Laser
Violet (blu-ray) 10 mW Laser
Ryo is offline   Reply With Quote
Old 09-09-2008, 01:43 AM #5
Class 2M Laser
 
Join Date: Feb 2008
Posts: 797
Rep Power: 76
iewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond repute
iewed iewed is offline
Class 2M Laser
 
Join Date: Feb 2008
Posts: 797
Rep Power: 76
iewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond reputeiewed has a reputation beyond repute
Default Re: Safety Question: KES-400A <10mW

I believe that Dave (Daguin) uses 405nm pointers for presentations, if you have any concerns you should send a him a pm.
iewed is offline   Reply With Quote
Old 09-09-2008, 03:33 PM #6
Ryo Ryo is offline
Class 1M Laser
 
Join Date: Aug 2008
Posts: 134
Rep Power: 10
Ryo is on a distinguished road
Ryo Ryo is offline
Class 1M Laser
 
Join Date: Aug 2008
Posts: 134
Rep Power: 10
Ryo is on a distinguished road
Default Re: Safety Question: KES-400A <10mW

I'll do that. Thanks for the suggestion
__________________
Laser Built:
Red 150 mW Burner Laser
Violet (blu-ray) 10 mW Laser
Ryo 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











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 02:08 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