Done that! I find blue LEDs incredibly annoying day or night.

Hi,

A blue LED is something you really like when you first see it, then soon you wish it would disappear. It's almost like it is a sad color or something. Maybe way back in time we learned to dislike blue because that was synonymous with going out in the daytime (with blue skies) which meant more danger from predators. As our neighboring cavemen and cavewomen were killed because of that, blue became a sad color to us. In music we have the "Blues". Or maybe from the blue ocean, where we lost friends due to drowning while fishing for food.

I am so sick of seeing blue LEDs that when I see a product that has a *different* color LED I buy it even if I can't use it ever

 

Is it just the blue light or the intensity of blue light that's the issue?

 

Is it just the blue light or the intensity of blue light that's the issue?

For me it is the blue light, but it's the high saturation blue not light blue or aqua which is more pleasing.
If the high sat blue is very bright though, that's an added detriment, at least for me, especially when it is shinning right in your eyes when you are trying to watch TV or something.
Aqua can be pretty nice if not too bright, but I grew to like yellow displays and LEDs. Funny because yellow would be every primary color except blue, and blue is every color minus yellow (which is red and green).
Dark green is nice too. Some people like orange, and I like it a little too.

Maybe it's also because a lot of products have been using blue LEDs now.

 

Think about how we normally use bright blue light. The flashing bright blue color is reserved for emergency/danger use just about everywhere in the world. It grabs our attention.

The scattering effect (the intensity of scattering is based off of the inverse of the wavelength of light along with Chromatic Aberration) in the atmosphere make blue light appear less intense but it also makes harder to focus and human eyes have fewer blue cone's (fovea center focus area is under 5% blue cones). Our eyes have evolved to handle blue light in the natural environment.

https://en.wikipedia.org/wiki/Fovea_centralis

The fovea has a high concentration of the yellow carotenoid pigments lutein and zeaxanthin. They are concentrated in the Henle fiber layer (photoreceptor axons that go radially outward from the fovea) and to a lesser extent in the cones.[23][24] They are believed to play a protective role against the effects of high intensities of blue light which can damage the sensitive cones. The pigments also enhance the acuity of the fovea by reducing the sensitivity of the fovea to short wavelengths and counteracting the effect of chromatic aberration.[25] This is also accompanied by a lower density of blue cones at the center of the fovea.[26] The maximum density of blue cones occurs in a ring about the fovea. Consequently, the maximum acuity for blue light is lower than that of other colours and occurs approximately 1° off center.[26]

IMO that's the main problem for me (poor vision since birth so I have read a little about the eye), the constant focusing when viewing small bright blue light sources. The older you get, the harder it gets to focus on blue. It's distracting and causes eye strain.

 

My external drives have blue lights. My WiFi's notification led icon is blue. Not that they are very bright, but I sit in the dark. Should I be concerned. I will make a note to look into this further.

 

My external drives have blue lights. My WiFi's notification led icon is blue. Not that they are very bright, but I sit in the dark. Should I be concerned. I will make a note to look into this further.

Hi,

I am not sure really, but yes look into it. Does the light bother your eyes though when they blink on and off a lot?

 

Does the light bother your eyes though when they blink on and off a lot?

No, I just want to get to the top of this. My lights are beautiful in the dark and I don't mind them.

 

No, I just want to get to the top of this. My lights are beautiful in the dark and I don't mind them.

You need to get out more.

 

This guy is proof.
View attachment 272801

Yes I do know that wasn't caused it.

https://en.wikipedia.org/wiki/Paul_Karason
The picture is an example of silver in the body. I cannot say intoxicated with silver because silver is not toxic, but it is irreversible.

 

With the utmost apologies, as they are simple things for you, I will remind them.

Damage processes occur daily in the cells of our body.

Fortunately, there are repair processes in the cells that will repair the damage.
If the cell cannot be repaired, then the mechanism of apoptosis is activated, i.e. programmed cell death.

It will turn into nutrients that will circulate for other cells.
But if the mechanism of apoptosis is affected by damage, then it will multiply indefinitely and it is very bad.

 

Unfortunately, the cellular repair mechanisms will decrease in intensity with aging. Senescence.
The first signs of aging appear after 25 years, in normal people, in children with progeria they appear much faster.

And the rate of accumulation damages remains relatively constant, it is clear that they will accumulate dasnages.

We say that the radiation becomes ionizing from blue, ultraviolet, upwards as photon energy.
That is, it can break the chemical bond, damaging the biological structure.

You can calculate the energy of the light quantum and the energy of the weakest bond in the biomolecule.

 

I am now writing from an old laptop with an LCD monitor and white LED backlight.

The white LED starts from ultraviolet (UV) light, which is even more dangerous, and the phosphor transforms it into white light.

The LED being a diode can emit only monochromatically, given by the jump of electrons from one energy level of the semiconductor to another.

And white cannot be monochromatic.

Fluorescent lamps, the same thing, emit a lot of UV.
" Fluorescent lights can cause health problems due to the mercury they contain and the ultraviolet light they emit. Long-term exposure can lead to skin irritations, eye problems, and "
https://blog.feslighting.com/are-fluorescent-lights-bad-for-you

I am waiting for the technology to become cheaper to buy an E-ink monitor.

 

I broke an old monitor trying to make it transparent like in this video and light it from behind with something else. But I will try again.
Or to find a reflective LCD with natural light with an acceptable resolution. Pixel QI is no longer produced.

 

I've notice that a type of fluorescent lighting in large warehouses have a light that would bother me if I stared at it like a bug.

 

That may be the flicker, which is also a problem with LEDs. You can't quite detect the flicker under normal use but it's there in your peripheral vision and it's very tiring.

Fun fact, if you are approaching a faint, the flicker becomes VERY obvious. A quick dose of natural light can turn you around. Been there.

 

The flicker must be a pulse of some profile. With a pulse there is a very high production of energy. I will have to make a little recorder and see what I can find.

 

LEDs are fully dark during a part of the AC sine wave - they don't glow once power is removed. So the flicker is potentially worse than for fluorescent bulbs which do make some light on the off part of the cycle. But the pulsing of fluorescents is a definite problem.

 

I imagine a color CCD sensor with not video, but 3D FFT spectral display.

Update: I don't see any CCD sensors with a fast enough response time and the photodiodes are hundreds of dollars.

 

https://www.bbc.com/news/articles/cg7zz5eml0no
Villagers say LEDs have left them in the dark

 

Some science to illuminate the issue

https://theconversation.com/how-muc...-your-sleep-relax-its-just-2-7-minutes-236066

... our research indicates the light from devices such as smartphones and laptops is nowhere near bright or blue enough to disrupt sleep.

There are many factors that can affect sleep, and bright, blue screen light likely isn’t one of them.