[SML] Blue lighting

[Ford Sellers]

Did you all get the recent iOS updates for your iPhones?
There is an option to change the color of the display, with the time of day.
Bluer during daylight hours, and red shifted during evening, night, and early morning.
There is a huge amount of data out there about how blue/High CCT lighting makes your brain think it is daytime, so keeps you awake.

This has the potential to be a very, very interesting conversation.

-Ford
-----Original Message-----
From: Stagecraft [mailto:stagecraft-bounces at theatrical.net] On Behalf Of Jerry Durand via Stagecraft
Sent: Wednesday, August 31, 2016 5:21 PM
To: stagecraft at theatrical.net
Cc: Jerry Durand
Subject: Re: [SML] Blue lighting

A couple of things...

Many if not most "white" LEDs are now made like florescent tubes.  The plastic jacket contains a phosphor that is illuminated by a UV LED die. 
Some of that blue probably leaks out of all but the very best ones.

NASA has found that the LED lighting in the space station can change sleep patterns for the worse, color selection of LEDs (not just CRI) for constant exposure turns out to be way more important than people thought.

I would imagine in the future someone will come up with a disorder or injury that can be tracked to living/working under too much blue light. 
This isn't actually new, actinic lighting was used long ago before modern florescents were invented.  It didn't work well then, either.

On 08/31/2016 02:12 PM, tech dept via Stagecraft wrote:
> More thinking... What's to say that to get white with the blue die 
> that that blue die is of such a narrow bandwidth that there has to be 
> a whole bunch more of it for our eyes to balance to the other colors 
> in the led emitter.
>
>  
>
> Jerry, Richard comments?
>
>

--
Jerry Durand, Durand Interstellar, Inc.
www.interstellar.com
tel: +1 408 356-3886


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