Blue Light Screen Filter

[Skuzzy]

Yes, changing the color temperature will reduce the blue.  The lower the number the more the color shifts towards red, from blue.  6500K is considered the most accurate color temperature for computer monitors.

Google "color temperature" and read about it.  You will find full graphs showing how the color temperature impacts the output color of the monitor, as it pertains to the temperature of the display.

[Vraciu]

Yes, changing the color temperature will reduce the blue.  The lower the number the more the color shifts towards red, from blue.  6500K is considered the most accurate color temperature for computer monitors.

Google "color temperature" and read about it.  You will find full graphs showing how the color temperature impacts the output color of the monitor, as it pertains to the temperature of the display.

So that's literally what hits my eyes?

Okay.  I will check it out.

Meanwhile....something like this is garbage, eh?

https://www.amazon.com/PYEPYD-Monitors-Diagonal-Hazardous-Blue-Light/dp/B01CZSY1C2/ref=sr_1_1?ie=UTF8&qid=1481227323&sr=8-1&keywords=blue+light+monitor+filter+24

[Drano]

If you can change that setting, lower is a more yellow or warmer shade where higher is bluer and cooler. This is a factor in photography where you'd want a proper white balance setting for the appropriate ambient light otherwise white won't be quite white skewing the other colors too. On a monitor you couldn't very well remove blue entirely as the monitors are RGB (red, green, bkue) and without blue they couldn't reproduce colors.

Sent from my XT1585 using Tapatalk

[Vraciu]

If you can change that setting, lower is a more yellow or warmer shade where higher is bluer and cooler. This is a factor in photography where you'd want a proper white balance setting for the appropriate ambient light otherwise white won't be quite white skewing the other colors too. On a monitor you couldn't very well remove blue entirely as the monitors are RGB (red, green, bkue) and without blue they couldn't reproduce colors.

Sent from my XT1585 using Tapatalk

So, when people have blue light filtering glasses that look clear they're actually only REDUCING the blue light?

I remember blue blockers back in the 90s where everything appears yellow.   I am definitely not chasing THAT effect.  Ha ha. 

[Drano]

So, when people have blue light filtering glasses that look clear they're actually only REDUCING the blue light?

I remember blue blockers back in the 90s where everything appears yellow.   I am definitely not chasing THAT effect.  Ha ha.

Correct. Reducing certain wavelengths of the blue light band.

I don't know if the blue blocker sunglasses actually blocked the blue or if it was just a yellow lense - - but the world was a yellow place looking through them.

An easy way to see what I'm talking about is to go to any home center these days. There's usually a display of the light bulbs that show the different color of the bulbs measured by the Kelvin scale. They're not all just plain white! 2700K is soft white. It's warmer and more yellow than a 5000k daylight bulb which is a bit brighter looking but much bluer even though they may be the same wattage bulb. You'd probably use the soft white bulbs in a lamp in your living room but a daylight in your laundry room. It's a personal preference.



Sent from my XT1585 using Tapatalk

[FLS]

That study is hogwash. They list the activities that cause the issue, and then blame the light. That actually passes as science these days.

I wasn't advocating it, I was answering a question with it.

Amazon has a blue filter on some of their fire tablets to help people sleep after reading. It's a popular concept.

[Vraciu]

I wasn't advocating it, I was answering a question with it.

Amazon has a blue filter on some of their fire tablets to help people sleep after reading. It's a popular concept.

I use that setting on my iPad 24/7.

I am not worried about sleep patterns but rather my eyes.  My eye guy is the best in the business.  Blue light from all these lights and devices is bad stuff.  So, anything I can do to avoid AMD or glasses...

[Drano]

I wasn't advocating it, I was answering a question with it.

Amazon has a blue filter on some of their fire tablets to help people sleep after reading. It's a popular concept.

I use an app called lux on my phone that adjusts the brightness of the screen relative to the ambient light. Saves on battery power as the screen consumes most of your juice. There's a blue filter that you can configure to come on at certain times of the evening. The idea is to help with sleeping. Blue light signals the body to wake up so you can reduce exposure to it in the hours prior to bed time with the filter.

Sent from my XT1585 using Tapatalk

[Vraciu]

So, how valid is THIS test?


About halfway down the page....side by side images. 

[715]

Check your monitor's Color setting or Color Temperature setting menu.  On mine it has a User Color Temperature setting but it isn't really a color temperature at all, it just allows me to turn the R or G or B channels down from 100% to as low as 0%.  So, for example, I can completely remove blue light by turning the Blue channel to 0%.  This sounds like what you want, but I'm not sure you understand the ramifications.  With Blue set at 0% there is no blue light emitted, but this page, which should have a white background, ends up being a ridiculous bright yellow (which is what you get from a mixture of Red and Green with no Blue).  The game would look silly without balanced colors.  Is that really what you want?  In other words it is, by definition, impossible to have proper color rendition while also blocking all the blue light.

[Vraciu]

I want to reduce potential eye damage from blue light.  Blocking UV is easy.  If I could,achieve similar results with a filter I would be ecstatic.  I presume some wavelengths of blue are worse than others so limiting the worst parts of the spectrum would be nice. 

I know what you mean about the blue.  My iPad is hued yellow with filtering enabled. 

I was under the impression that LED monitors emit much more intense blue light than previous technologies... 

[Chalenge]

You do realize that blue light is everywhere? It's also true that significant amount of HEV blue light is good for treating seasonal affective disorder. If you live up north that might be important to you.

Fighting blue light by covering your eyes is like using hand sanitizer to protect your respiratory system.

[Skuzzy]

UV is not part of the visible spectrum of light and is also not emitted by any LCD monitor, regardless of the backlighting.

[Vraciu]

You do realize that blue light is everywhere? It's also true that significant amount of HEV blue light is good for treating seasonal affective disorder. If you live up north that might be important to you.

Fighting blue light by covering your eyes is like using hand sanitizer to protect your respiratory system.

And pounding your eyes with artificial blue light on top of what's already out there is not good for them.

[Vraciu]

UV is not part of the visible spectrum of light and is also not emitted by any LCD monitor, regardless of the backlighting.

Ah.  Not being a smart bellybutton here or anything, but I guess people writing these articles claiming monitors emit UV are misinformed?   

I spend hours staring at AH-related stuff, iPads, smartphones, glass cockpit displays, etc..   Don't wanna' be blind as a bat when I hang it up.