Problem with IR emittion, eyes hurts and meter is full

Hi guy!

More than couple of time i have noted that some of my lcd screens makes my face feel hot and slight burning eyeball (nothing too strong that i must stop, but i feel it)

I have an old Palm TX that i use for passing time, music and some reading in the bed.
what called my attention is that i was using my laptop and i decide to check a text i had in the PDA and the text editor started to write stuff in the screen (excactly like if i where entering ramdom keystrokes form the IR keyboard but there was no IR keyboard but the PDA was in front of the laptop'screen (12 inches away) )

i have an app called "IR monitor" in the PDA, i use it for testing IR emiting devices (remote controles, IR lights etc...) and ran the app run the meter was FULL, which mean the LCD was emittin tons of IR radiation, thats why the PDA started writing, it recognized the constant IR bombarding as an IR keyboard)

i connected the laptop to an external screen, and the meter went down, i moved the PDA closer to the screen to see at which distance it receives the radiation and and i had to approach the PDA untill one inch form the screen, i guess that is ok, but with the laptop screen, it can measure the radiation up to 1meter exactly.

i have read on the internet that the wavelength for LCD IR emittion is between 5cm and 100cm.
does this have something to do with the fact that the ir monitor detects IR from my external monitor at one inch from it and with the laptop screen (the one which causes me more fatigue and itchy eyes) up to exactly 100cm?

now, about my health, i dont know if the emissions from my screens are stronger than normal or if i am more sensible...

anyway i was looking for any IR filter for screens and i found nothing, i decide to do a little test to see what can block those IRs, and using the IR montior on my PDA, the only thing able to block the IR (neither polarized/UV/darked glasess) was a pair of old aviation glasses, those that looks like a mirror in the outside.

i want to give it a try to this:
http://www.ebay.com/itm/Starlite-IR-Filter-Shade-3-0-Safety-Glasses-Gateway-Plasma-Torch-Goggles-/290805201849?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D5271903572527471761%26pid%3D100015%26prg%3D1006%26rk%3D1%26sd%3D290805201849%26

since this was the only thing i found.

What do you guys think about all this?

Sorry for the english, if something is unclear, please ask me anything you need me to clarify!

Thanks!
Edited by Kharl - 1/31/13 at 2:21pm

Hi!
sorry, it is for Palm OS

because the sligh heat i feel in the face.

with other type of displays?

despite the sharp noise of some CRT display (i dont just can head it, i can not stand it), no, no the IR issue with other displays

mm.. i have thought about that too, i spent lot of time in front of screen (i study at home, but i am finishing lol), but sometimes i only have 5 minutes in front of the screen and i feel like i have hours; warm face and slight pain in the eyeballs and forehead... and sometimes slight headache (i am not prone to headaches)... whe i get those symptns i run the IR Monitor in my palm and there is it! a strong IR output from the screen.

BUT jut to be clear, somewhere in the time i remember to take a IR test when i feel OK with the screen (most of the time) and there is not IR output detected beyond one inch from the screen.

What i am telling you is that sometimes the IR monitor in my PDA can detect the IR emition up to one and two meters from the screen, and the other times is not detected more than one inch form screen, and coincidentally when the IRmonitor is detecting radiation at one meter or more from the screen IS when i have the symptoms

i remember this to happen maybe one time at month just to give a number,
I use the screens with the brightness at minimum

mmm.. i dont think so.

backlight control... mm... nahhh i have brightness, contrast but not backlight, neither screens

i feel those sympton more often in the laptopscreen, (i use the laptop in a dockingstation) and lot less often in the external screen, at least i could change the external screen for a LED one... but the laptop....

Hi guys

check this fact;

Today i am using my laptop, with its screen (the one which causes the symptoms...
while yesterday, the whole day was painfull to use it and the ir monitor app in my PDA showed me that it was emitting lot of IR radiation

today i am using it, i feel got and i decide to see what about its IR emissions.. and the IRmonitor only detects i up to 25cms and not up to 100cm like yesterday... is more than coincidence..

now i am behind what causes my laptop screen one day to emits lo of IR radiation and the next day is ok.

i know, the weirdest thing is that autodim is working all the time, from low to high but only once i a month is that i note that

I know it is not a precission instrument
I know that buddy,
i am not the engineer which are measuring the screen i am just the user which fell uncomfortable in front of some LCD screen and that my disconform coincide 100% the times the tiny app is registering IR beams... thats it

i use it as a reference because compared with a tomato, at least the app (designed to test IR remote controllers, [nothing too professional nor precise]) CAN received it and tell me if it is present or not,

simply like that, is not telling me the output power, the heat transfered and that kind of specific data like if were a Fluke IR Monitor... it just tells me if there is a direct beam to my face or not and when i feel the sympts there is the direct beam from the monitor (MORE than the normal)

thats it!

well thanks anyway, problem partially solved changing to a VX2451mh LED ( a low ir/uv/em radiations model, is what the manufacturer told me)
and with the laptop screen, now i have to use IR filter stuff coated glasses (like the ones for welding but without shade/dark)

thank you