Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





One laser store meets all your needs

Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Safety & Legal Issues





Reply
 
LinkBack Thread Tools Display Modes
Old 01-28-2016, 02:35 PM #1
Class 2M Laser
 
Join Date: May 2009
Posts: 956
Rep Power: 2276
LSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond repute
LSRFAQ LSRFAQ is offline
Class 2M Laser
 
Join Date: May 2009
Posts: 956
Rep Power: 2276
LSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond repute
Default Giving Intentional illuminations the NODD

New One...

Nominal Ocular Dazzle Distance....

Much different then Nominal Ocular Hazard Distance..

Much harder to calculate.....................

Discuss....

Steve


__________________
Career highs and lows:

255 nm to 2100 nm Tunable.
2100 nm to 11 uM tunable.
50 Joules, 700 Picoseconds 1064
32 Joules, 700 pS Green.
Nanosecond, Picosecond, Femtosecond.
HeCad, HeNe, CuBr, Krypton, Argon, N2, Dye, Ti:Saph,
Nd:YLF, Nd: VANDATE, ND:GLASS, OPG, SFM, RAMAN SHIFTED, DFG, OPA,UV Argon Ion, UV and IR (752/799) Krypton Ion
2,3,4th Harmonics of Yag. 13 lines of Mixed Gas, 575 Kr. 690 Kr . 18 lines of HENE. NEW FOR 2016! "Blue OPSL" and Raman Shifted Hene 651 ... New for 2017, Green OPSL, Coming Soon, Yellow OPSL Yet I've flipped Burgers, too.

"I'm from Akron, I know what the Polymers Taste Like"
LSRFAQ is offline   Reply With Quote


















Old 01-29-2016, 02:45 PM #2
Class 2M Laser
 
Join Date: May 2009
Posts: 956
Rep Power: 2276
LSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond repute
LSRFAQ LSRFAQ is offline
Class 2M Laser
 
Join Date: May 2009
Posts: 956
Rep Power: 2276
LSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond repute
Default Re: Giving Intentional illuminations the NODD

Nominal Ocular Dazzle Distance is a new concept by Craig Williamson of DSTL_Porton Down and Leon McLin of the US Air Force 711th Human Performance Wing.

Most PLers and LPFers view optical disruption of vision by the damage threshold, Nominal Ocular Hazard Distance, NOHD, and some advanced ones who have read into the matter calculate the Sensitive and Critical Zone exposure distances used in aviation laser safety for laser shows. Others just go by the basic laser classification system of class I to IV. What NODD does different is it helps estimate what the laser "Dazzle" does to visual acuity off axis to the laser strike.

The proposed concept, gives a more accurate view of what happens when performing a task while a portion of the eye is laser illuminated, and while the fluid in the eye and surface of the retina is scattering laser light. This scattered light can greatly affect visual acuity elsewhere in the eye.

NODD is also dependent on the angle of beam entry to the eye, as well as the angle to the viewing target such as a runway threshold.

The results of this calculation might surprise most of the naysayers who think even low power pointers cannot possibly interrupt a pilot's task during approach or at high altitude flight. This paper is the first published means to help determine a qualitative level of visual field disruption in a meaningful way.

Stray Light and Veiling Glare matter....

More to come.

Steve

Reference Citation:

Craig A. Williamson and Leon N. McLin, "Nominal ocular dazzle distance (NODD)," Appl. Opt. 54, 1564-1572 (2015)
__________________
Career highs and lows:

255 nm to 2100 nm Tunable.
2100 nm to 11 uM tunable.
50 Joules, 700 Picoseconds 1064
32 Joules, 700 pS Green.
Nanosecond, Picosecond, Femtosecond.
HeCad, HeNe, CuBr, Krypton, Argon, N2, Dye, Ti:Saph,
Nd:YLF, Nd: VANDATE, ND:GLASS, OPG, SFM, RAMAN SHIFTED, DFG, OPA,UV Argon Ion, UV and IR (752/799) Krypton Ion
2,3,4th Harmonics of Yag. 13 lines of Mixed Gas, 575 Kr. 690 Kr . 18 lines of HENE. NEW FOR 2016! "Blue OPSL" and Raman Shifted Hene 651 ... New for 2017, Green OPSL, Coming Soon, Yellow OPSL Yet I've flipped Burgers, too.

"I'm from Akron, I know what the Polymers Taste Like"

Last edited by LSRFAQ; 01-29-2016 at 02:56 PM.
LSRFAQ 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
















Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 02:16 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