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Correction Technique Adds 'Warmth' to Dimmable LED Light
1/15/2013

Using a correction technique, NXP engineers say they can produce a dimmable LED color that lies between amber and white.   (Source: NXP Semiconductors)
Using a correction technique, NXP engineers say they can produce a dimmable LED color that lies between amber and white.
(Source: NXP Semiconductors)

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Ann R. Thryft
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Re: Great innovation
Ann R. Thryft   2/6/2013 2:52:20 PM
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Those white LED bulbs can cause eyestrain over long periods--they're just too harsh, although ideal for short periods of intense scrutiny when looking at fine detail.

Gorski
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Warm LED Light
Gorski   2/9/2013 3:44:01 PM
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I think this is a step in the right direction. Dimmable LED lights that are "warm" would be a great product for the home, much less cars. I have many dimmable lights in my home. Alas, all are incandescent. The dimmable LEDs available have a very narrow "dimming range."

 

GORSKI PE

Jack Rupert, PE
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Re: Great innovation
Jack Rupert, PE   2/25/2013 3:45:11 PM
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I intend to do something similar, Charles.  At the moment, I'm in a temporary location, but when if the lighting is similar when I get a permanent home, I expect to be getting myself a desklamp that will throw some warmer light on my work area.  My previous company actually supplied halogen desklamps for that purpose and one of the part-time student admins who works for me already brought in an incandescent light for this purpose.

Charles Murray
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Re: Great innovation
Charles Murray   8/27/2013 6:12:33 PM
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I agree, Ann. Are those LEDs bright? Yes. Pleasant? No.

Ann R. Thryft
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Re: Great innovation
Ann R. Thryft   8/28/2013 12:20:28 PM
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I don't remember the details, but I have seen ads about better, more naturally-colored LED-based light bulbs recently, so there's hope.

tekochip
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Re: Great innovation
tekochip   8/28/2013 3:32:39 PM
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That's a really clever technique.  I worked with a pinball company (OK, there's really only ONE pinball company), and their solution was to mix additional colors in with the white LEDs to make them look a little less ghostly.  Reflectors were also used to warm the white LEDs up a little bit.  As you can imagine there are quite a few bulbs in a pinball machine and finding a solution was really important.
 
White LEDs did make great replacement for flashers, which was really a 12V bulb hit with 24V, as you can imagine, they wear out pretty fast.


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