Old 04-25-2016, 10:07 PM #1
Junior Member
 
Join Date: Apr 2016
Posts: 1
Rep Power: 0
JW233 is on a distinguished road
JW233 JW233 is offline
Junior Member
 
Join Date: Apr 2016
Posts: 1
Rep Power: 0
JW233 is on a distinguished road
Default Retinal Irradiance for Dummies

Hey all, thank you for taking a second to help me with my question.

I'm trying to create a sort of layman's chart that equivocates degrees of retinal irradiance to something that people are familiar with.

i.e.
10 W/cm^2 = staring at the sun
0.001 W/cm^2 = staring at a lightbulb
and so on and so forth

Is anyone familiar with something like this already existing, or has enough knowledge to help me fill in indicators for 0.01, 0.1, and 1 W/cm^2?

Thanks!


JW233 is offline   Reply With Quote


















Old 05-02-2016, 09:00 AM #2
Omnipotent
 
Join Date: Jul 2008
Location: Bangor Pennsylvania Untited States
Posts: 1,120
Rep Power: 12921
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: 1,120
Rep Power: 12921
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: Retinal Irradiance for Dummies

I read looking at the sun in the sky=the same as a 1 mw laser.

can anyone confirm this?
__________________
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 05-02-2016, 11:13 AM #3
olympus mons's Avatar
Class 3R Laser
 
Join Date: Nov 2014
Location: Portland, Oregon
Posts: 1,285
Rep Power: 220721
olympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond repute
olympus mons olympus mons is offline
Class 3R Laser
olympus mons's Avatar
 
Join Date: Nov 2014
Location: Portland, Oregon
Posts: 1,285
Rep Power: 220721
olympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond reputeolympus mons has a reputation beyond repute
Default Re: Retinal Irradiance for Dummies

Quote:
Originally Posted by joeyss View Post
I read looking at the sun in the sky=the same as a 1 mw laser.

can anyone confirm this?
I have heard this too but I would guess it refers to the amount of light or photons hitting your eye of equal area. Its hard for me to put it into words but I will try.
Maybe its meant that if the circumference of the spot of a 1mW laser was 1 mm it would be the same as looking at the sun through a 1mm hole punched through a piece of black paper. The amount of light from the sun coming through that hole is the same as the amount of light from a direct hit of a 1mW laser?

It would be surprising and hard to believe that a 1mW laser in your eye would be the same as looking at the entire sun. If that was the case then pointing a 1mW laser at a solar panel would produce equal power as the entire sun hitting the same panel. Doesn't seem right to me.
But someone more knowledgeable than I will chime in and explain hopefully.
__________________

lllllll--------------o---||||||||]_
_________________________
lllllll-o----------------||||||||]

Last edited by olympus mons; 05-02-2016 at 11:14 AM.
olympus mons is offline   Reply With Quote
Reply

Tags
graph, irradiance, retinal





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 12:14 PM.


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