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Does laser safety goggles filter out the blue light wavelengths of LEDs?

Hassel

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I'm very sensitive to the blue light wavelength of LEDs. I bought the Eagle Pair laser safety goggles called EP-1-10 to block the wavelengths 190-540 nm in my computer display.

I do still see objects of blue colors in Windows operating system at my laptop display though I'm wearing the goggles. I thought that the goggles should reduce the blue light by 99,999 % (OD=5) so that I would only see the Red and Green wavelengths of the three light diodes (RGB) in the display.

Why do I see objects of blue colors in Windows operating system at my laptop LCD-display if the goggles are blocking the wavelengths of blue according to the specifications of the goggles?
 



Cyparagon

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Wow, man. There's just... SO much to unpack here. Um... Christ. let's try an itemized list maybe.

1) What makes you think a computer monitor emits light in the 190nm range?
2) What definition are you using that lists 190nm as blue?
3) What definition are you using that lists 540nm as blue?
4) Why are you trying to block (what you've erroneously called) blue?
5) We perceive light on a logarithmic scale. Full sun is upwards of 200,000 lux. If we block 99.999% of that, we have 2 lux. But 2 lux is still brighter than moonlight. This raises the following question:
6) How much blockage is acceptable?
7) How have you determined the figure in 6 above?
8) What makes you think modern monitors have three "light diodes"?
9) What wavelength do YOU think green is, since this is evidently purely subjective.
10) What makes you think this phenomenon is exclusive to the windows operating system?
11) Have you considered altering... I don't know... the display settings instead?
12) Are you aware that a blue photon generated from an LED is IDENTICAL to that of a blue photon generated from any other light source, including candles, incandescent lamps, fluorescent lamps, and the sun?
13) Are you a flat-earther as well?
14) If not, can I have some of what you're smoking?
 

Alaskan

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I edit this out due to Cyp's complaint.
 
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Hassel

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Thank you Cyparagon for answering my question. I do promise that I'm absolutely serious. I realize that the members of this forum suppose that I'm a troll but I do promise you that I'm asking you seriousley. I have read about how LCD display, lasers, visual light spectrum, color space, e.t.c. work but I'm not an expert as I suppuose that several members of this forum is. Please do have patience with me.

Now I'll try to answer your questions.

"1) What makes you think a computer monitor emits light in the 190nm range?"

I should have explained myself in a better way. I really don't think my computer monitor emits light in the UV spectrum. I do think my LCD monitor emits light in the visual spectrum with a tilt towards the blue light in the 450-495 nm. I bought the Eagle Pair laser safety goggles called EP-1-10 because the 450-495 nm is within the 190-540 nm range.

" 2) What definition are you using that lists 190nm as blue?"

I don't think that 190 nm is blue light. I know that 190 nm isn't in the visual spectrum and I do know that LCD monitors doesn't emit UV light (I have actually red that the LED panel in the LCD monitors do emit very little UV but that the UV light never affect the computer user because it's blocked inside the monitor).

"3) What definition are you using that lists 540nm as blue?"

540 nm isn't blue. It is within the green wavelengths. I bought the Eagle Pair laser safety goggles called EP-1-10 because they Protect within the range 190-540 nm and because the blue light is within that range (450-495 nm).

"4) Why are you trying to block (what you've erroneously called) blue?"

I try to block the blue light of my computer LCD monitor because I do suffer from really severe sleeping problems and because the blue light has got the most energy of all colors (wavelengths) in the visual light spectrum. I have tried computer goggles that is told to block blue light but they really don't work. There are several test on the Internet that prove that those goggles only block a small amount of blue light that it really doesn't matter if one got severe problems. I've also tried the computer software f.lux and Iris but they don't work either. The only thing that has been working so far is the Dasung Paperlike e-ink display. The display is very expensive though and it won't protect my eyes against the light of all the computer displays that is almost everywhere in the society nowadays. Therefore I got thinking of laser safety goggles. I thought laser safety goggles would filter out the blue light so that my eyes only will be hit by light of wavelengths larger than blue. And maybe they do but I'm curious why I still can see the blue colors on my computer display wearing the Eagle Pair EP-1-10 laser safety goggles.

"5) We perceive light on a logarithmic scale. Full sun is upwards of 200,000 lux. If we block 99.999% of that, we have 2 lux. But 2 lux is still brighter than moonlight. This raises the following question:
6) How much blockage is acceptable?"
7) How have you determined the figure in 6 above?"

I don't know how much blockage is acceptable but I do want to block as much blue light as possible. I want to block 100 % if it were possible. The Eagle Pair EP-1-10 has an OD value of 5 so I do think that they would block 99,999 % of the blue light. My answer to question 7 is that I don't really know the figure but I know that I do want to block as much as possible.

"8) What makes you think modern monitors have three "light diodes"?"

The liquid crystal display in LCD monitors do not produce light by themselves they need illumination (ambient light or a special light source) to produce a visible image. This is done either by a panel of LEDs or by fluorescent "lamps". The liquid crystal display is between the light panel and the computer user. The LCD display have pixels that are divided into red, green and blue (RGB) sub-pixels. The liquid crystal display block (by polarizing the light from the LEDs in the light panel behind it) so that different amount of light will go through the red, green and blue sub-pixels. It really doesn't matter if the monitor does have three light diodes (red, green and blue) or if it does have single LEDs that emits blue, green and red light. The matter is that the artificial light from LEDs is created by a method called the additive method that combines red, green and blue to achieve the "white" light. Therefore the LCD display will emit light of blue wavelengths especially if the operating system shows blue colors I think.

"9) What wavelength do YOU think green is, since this is evidently purely subjective."

I do think that the 520–565 nm is green wavelengths. I can't see how it matters if the green light would be in 500-545 nm, 550-594 nm or any other range because I'm trying to block out the blue light. It would be great to block out the green wavelengths too but I'm mostly interested in blocking the blue light because it has the most energy.

" 10) What makes you think this phenomenon is exclusive to the windows operating system?"

The phenomenon isn't exclusive to the Windows operating system at all. If it were then I should have solved my problems long ago by changing to OSX or Linux. I did mention Windows as that is what I'm using right now but I'm really sure that the operating system is not the matter in this case. I've tried a lot of things to solve my severe sleeping problems and I have found out that I sleep well by using a Dasung display together with avoiding modern computer and smartphone displays. I must stay at home all day to avoid modern computer and smartphone displays and I want to find a solution that gives me the opportunity to expose myself to all displays in the society.

" 11) Have you considered altering... I don't know... the display settings instead?"

Yes. I have tried using the "warm" setting of the display and I've tried using computer software as Iris and f.lux. They are worthless to me.

" 12) Are you aware that a blue photon generated from an LED is IDENTICAL to that of a blue photon generated from any other light source, including candles, incandescent lamps, fluorescent lamps, and the sun?"

Yes I'm aware of that. The difference is that the "white" light of LEDs is tilted to the blue light. There are more blue light in the "white" LEDs than in the "white" light of the sun. The LEDs do also flicker though is is said that the flickering of modern LEDs isn't detectable by the human eye. The light of the LEDs is also affecting us in an unnaturally way during the day because we are affected by the light of LEDs when it should be darker according to our "biological clock" while the sun and our daily sleeping do match. The "light polution" in modern societies is increasing. No doubt about that. I cannot turn off the LEDs in the society in the evening so I do need to find a solution so that I could spend time outside in the evening too. And I do want to have the possibility to use LCD display and not only my e-ink display.

"13) Are you a flat-earther as well?"

No I'm absolutely not. I know that the earth is approximately spherical although it is not perfectly round as some people do believe.

"14) If not, can I have some of what you're smoking?"

If you do help me solve my severe sleeping problems by helping me find a solution to block the blue light of modern computer displays then you will have the recipe. ;) Honestly I don't even smoke cigarettes and I promise you that I'm not trolling this forum. I'm trying to find a solution to my severe sleeping problems and I have come to the conclusion that there is something in modern computer displays that affects me badly. I do think it has to do with the flickering or the light, especially the blue light, of LEDs.
 
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steve001

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I'm very sensitive to the blue light wavelength of LEDs. I bought the Eagle Pair laser safety goggles called EP-1-10 to block the wavelengths 190-540 nm in my computer display.

I do still see objects of blue colors in Windows operating system at my laptop display though I'm wearing the goggles. I thought that the goggles should reduce the blue light by 99,999 % (OD=5) so that I would only see the Red and Green wavelengths of the three light diodes (RGB) in the display.

Why do I see objects of blue colors in Windows operating system at my laptop LCD-display if the goggles are blocking the wavelengths of blue according to the specifications of the goggles?
There's a possible easy solution you should have tried first. And that solution is stop using any device that you think emits blue light, such as a mobile phone, pc, tv a few hours before going to bed. This will allow melatonin to accumulate within your brain.
P.S. I've read even moonlight can have a very slight affect.
 

Hassel

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There's a possible easy solution you should have tried first. And that solution is stop using any device that you think emits blue light, such as a mobile phone, pc, tv a few hours before going to bed. This will allow melatonin to accumulate within your brain.
P.S. I've read even moonlight can have a very slight affect.
It works if I stay away from blue light and only expose myself to the blue light from the sun all day but I is not good enough to just avoid mobile phones, PC, TV only a couple of hours before going to bed. I've tried your solution and I know that I need to somehow block blue light (and maybe even green light) all the day. Then I'll sleep well. My solution don't work if I want participate in the society. Then I need to somehow get the artificial blue light out of my life, I think.
 

Hassel

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Wow, man. There's just... SO much to unpack here. Um... Christ. let's try an itemized list maybe.

1) What makes you think a computer monitor emits light in the 190nm range?
2) What definition are you using that lists 190nm as blue?
3) What definition are you using that lists 540nm as blue?
...
I did answer all of your questions in a saparate post. Please see another post above.
 
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trephanation

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Check out the app called f.lux, it filters out blue light exactly how you want. I use it myself, but set it to kick in when the sun sets. You can configure it however you want.
 

Hassel

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Check out the app called f.lux, it filters out blue light exactly how you want. I use it myself, but set it to kick in when the sun sets. You can configure it however you want.
Thanks for your advice but I have already tried f.lux (and Twilight and Iris) and they don't solve my problem. I think they don't get rid of enough of the light that disturbs my sleep.
 

steve001

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It works if I stay away from blue light and only expose myself to the blue light from the sun all day but I is not good enough to just avoid mobile phones, PC, TV only a couple of hours before going to bed. I've tried your solution and I know that I need to somehow block blue light (and maybe even green light) all the day. Then I'll sleep well. My solution don't work if I want participate in the society. Then I need to somehow get the artificial blue light out of my life, I think.
Since we aren't doctors go to your's. He or she can point you to a sleep clinic.

Just for curiosity. Are you saying your social life is so active that you can't avoid devices that emit blue light just prior going to bed say two hours?
 

Hassel

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Since we aren't doctors go to your's. He or she can point you to a sleep clinic.

Just for curiosity. Are you saying your social life is so active that you can't avoid devices that emit blue light just prior going to bed say two hours?
No I'm saying that it doesn't help to stay away from blue light several hours before I go to bed. My sleep will be disturbed even if I only expose myself to blue light in the morning long before going to bed. But if I stay away from blue light all day then I will sleep as normal. The blue light from the sun doesn't disturb my sleep but the the sun is not active in the evening as LEDs are. I do have to find a way to protect my eyes from blue light of LEDs all day long, especially from the large amount of blue light that computer displays emit. Is is hard to participate in the society when one cannot avoid artificial light, especially not all the displays that is beginning to pop up everywhere in the modern society.
 

ZRaffleticket

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A doctor visit may help. Though I have a few questions,

What do you do in the hours after using the device and going to sleep? I can't help but think there's another factor in this. Why do you think it's the blue light from your monitor?

Like is everything in your life stable? What's your attitude toward social media if you participate in it? What do you do on your computer? how about exercise habits, reading books, home lighting (led lighting?), TV? Is there anything you do differently day to day if you stay off the computer? Just looking for something, 2+ hours away from the monitor sounds too extreme to me to be the sole reason.
 

Hassel

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A doctor visit may help. Though I have a few questions,

What do you do in the hours after using the device and going to sleep? I can't help but think there's another factor in this. Why do you think it's the blue light from your monitor?

Like is everything in your life stable? What's your attitude toward social media if you participate in it? What do you do on your computer? how about exercise habits, reading books, home lighting (led lighting?), TV? Is there anything you do differently day to day if you stay off the computer? Just looking for something, 2+ hours away from the monitor sounds too extreme to me to be the sole reason.
I've already been consulting a doctor and the doctor diagnosed me with ME. I'm also diagnosed with Asperger's syndrome. ME and Asperger's syndrome may of course explain the problem but it doesn't solve the problem to avoid blue light in my life. That is the reason why I bought the laser safety goggles. I've also thought of another factors but the fact is that I do sleep well if I avoid lights from LEDs all day and nothing disturbs my sleep as much as computer displays. Therefore I do believe that the problem is computer monitors and LEDs light. Computer monitors and LEDs have at least one thing in common and that is that they do emit (blue) light and they do flicker (although it is said that the human eye cannot detect the flicker of modern LEDs). I have come to the conclusion that there is something in the light of LEDs that causes me to sleep bad.

"Like is everything in your life stable?"

Yes it is.

"What's your attitude toward social media if you participate in it?"

I don't really participate in social media. I do use Facebook to stay in contact with some people.

"What do you do on your computer?"

I mostly surfing the web and writing text in Word. I never play games or watch movies.

"how about exercise habits"

I did exercise at gym before I got diagnosed with ME. Nowadays I do some bicycling sometimes but not every day. That's all.

"reading books"

I do read biographies or fact books almost every day.

"home lighting (led lighting?)"

I have replaced all of the LEDs in my home by old light bulbs. That together with my Dasung computer display let me use light at the evening and use my computer until I go to bed without disturbing my sleep. Now I have to find a solution to block (blue) LED light when I spend time outside my home otherwise I've to stay at home all day long.

"TV?"

I don't have a TV and I never watch movies on the computer display either.

Can anyone please explain why I'm able to see the blue colors of images at my computer monitor when the Eagle Pair goggles shall block light of 190-540 nm at OD 5 and the blue light is within the 450-495 nm? I think it's the same question why one can see the dot of a blue laser pointer if one wears laser safety goggles that block light in 450-495 nm. How is that possible?
 
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steve001

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Can anyone please explain why I'm able to see the blue colors of images at my computer monitor when the Eagle Pair goggles shall block light of 190-540 nm at OD 5 and the blue light is within the 450-495 nm? I think it's the same question why one can see the dot of a blue laser pointer if one wears laser safety goggles that block light in 450-495 nm. How is that possible?
Because such glasses are not intended to completely block all the light.
 

Hassel

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Because such glasses are not intended to completely block all the light.
But if the OD is 5 then they should block 99,999 % of the blue light or am I wrong? Is it possible to see the color even though 99,999 % of the light is blocked?
 

steve001

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But if the OD is 5 then they should block 99,999 % of the blue light or am I wrong? Is it possible to see the color even though 99,999 % of the light is blocked?
Evidently you are.
 




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