@herf Every OLED device uses PWM currently. Windows phone, samsung, motorolla all the rest. It's terrible.

Yes! I was so happy to see it, she really nailed all the stuff I wanted to say.

I can't pick the HTC One M9, is the color temperature is WAY the hell up there, at 8114K according to "phone arena", which I appreciate them taking the time to measure!
EDIT, it really looks completely normal in the photos, so I'm not sure how accurate the data is. Oh it's accurate, youtube just proved that.

That's great, and here's the chart: http://www.phonearena.com/reviews/HTC-One-M9-Review_id3956

Yeah, that's rediculous, and so I've been adding phone to that list in the chart, and the only two that I've found in the ballpark of where I want the color temp is the HTC Desire 626, and the Nexus 5. I'll have to look around some more, there were others as well, the M8, at ~7110K, was decent.

I'll try to generate a list for you in the chart... and that isn't easily possible, haha, maybe there's code in the chart I can save or something fancy, anyway I think I've got an idea.

I'm not sure of your familiarity with PC gaming, or the Reddit "PC Master Race". Well now they have come up with the PC Master Race curator which is a list of PC worthy / well coded PC games. I was thinking we could start the 6500K Master Race! We could go out, and find data on which phones have a color temperature close to 6500K, and have the list available for everyone to view. I understand that this is what the fluxometer does, but for a quick list, I think people might like it.

Currently, I cannot filter the list of phones in the fluxometer by color temperature, but on the website I have linked, I can, and that is amazing. Hmmm, maybe just link to that chart!

@herf said:

As a single wavelength, cyan/aqua is the exact color of the peak response.

So it's most likely extremely close to the effect of slightly higher blue?

Thanks so much guys/girls!

This info is great.

Much appreciated. I'll look into getting some of that film. It could be a good idea for tvs at night!

The calibration on fluxometer is based on "phase shift" which is usually 40% higher than melatonin suppression, but they both are adjusted to have the same "zero" point.

You probably want to be looking at the melanopic "SI units" in the "details" tab, if that's not what you're doing already. Some experiments will report total spectral power, but it's not as useful unless the experiment is exactly the same kind of light source. The "actinic" spectrum should be quite a bit more transferable across light sources.

Love to know where you found the 0.35 number - sounds about right to me. When I use the parameters you specified (4100K at 30%) I get:

Melanopic: 1.36 µW/cm2

Indeed. Why do i suffer from insomina ? Now, my wife: when she goes to bed ( as she says to go to sleep ) her head is about 5 inches away from her pillow and she is sound asleep.

@timpster said:

Yeah I know what you mean, thanks for explaining though, it does help!

Yeah I won't do that again it would really confuse the shit outta me too!

hehehehe yeah it was so bad I had to run to the bathroom. hahaha Get it? :)

@lorna Thanks, that's very interesting -- do you think it's because of the longer day length?

Also, I'll try not to nap a lot this winter!

Aw, I don't want a flat spectrum. That probably won't be what I was looking for. Also the whole heat issue, I guess that's why they didn't take off for consumers.

I've learned so much from you two, it's just so cool! Thanks I'll stick with LED, and have you seen the new LED panel?

Fall weather comes later here anyway, but this summer has been a record-breaker (like in many places). And we're probably about to get whacked with an El Nino year which brings hot humid air and many storms:

http://www.nytimes.com/2015/08/14/science/signs-of-a-historic-el-nino-but-forecasters-remain-wary.html?_r=0

@timpster said:

O.K., good, you made it seem like you changed it every day / night, good stuff.

I was just trying to be clear for Chuck-Jones while stating it as simply as possible.

Thank you for posting! This is a wonderful study. Mobile devices aren't going away anytime soon, and kids especially need protection from alerting light at night.

Here is the link to fulltext for anyone interested: http://press.endocrine.org/doi/pdf/10.1210/jc.2015-2775

Wow. That looks like quite a read. I'll have to take a nap either before or immediately after this one!

Yeah, it's going to be decades, if not centuries, before we humans evolve to that point. We humans are just now barely beginning to wake up to lots of things, such as what we are discussing here. When you really think about it, you realize that we are actually still very primitive. However, we've sort of made this illusion that we're quite advanced. Think about it though! We're still quite primitive.

Anyway, I don't think it's that people aren't really paying attention, but it's that it truly doesn't bother some people as bad as others. Refer back to that Psychology Today article on the "Pupillary flutter". They talk about individuals with Autism, and, well, I have Asperger's Syndrome which today is just being called "Mild Autism". So, I'm not surprised that I have a problem with fluorescent lights and even LEDs. I'm not surprised that I strongly prefer natural light and incandescent light.

The only reason why I prefer LED lights over fluorescent though is, they're cheaper and they don't create "dirty electricity", and also that true incandescents are pretty much not worth trying to find anymore. Well, Aero-Tech has the best incandescents, but they don't make a good old-fashioned 3-way. Their only 3-way from what I can tell is a full spectrum bulb.

Awesome! I'm going to purchase a few in the future (very near future). Will they dim properly with the plug in wall dimmers from Lutron?

Oh good lord, this again.