Orange super-bright LEDs

[John Larkin]

On Mon, 28 Nov 2016 08:39:50 +0000, Andy Bennet <andyb@andy.com>
wrote:

On 25/11/2016 09:21, Mr. Man-wai Chang wrote:

Are they true orange LEDs?

Is "orange" the same as "amber"

Not-so-bright orange is the new black.

Four LEDs (R, G, B, D) can synthesize any color, including black.


--

John Larkin Highland Technology, Inc

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

 

[default]

On Sun, 27 Nov 2016 02:50:58 +0800, "Mr. Man-wai Chang"
<toylet.toylet@gmail.com> wrote:

On 25/11/2016 10:49 PM, default wrote:

So how do they make LEDs to shine a certain color?

Your Google is broken?

Was expecting a few sentences as answers from you....

Not being in the manufacture of leds I can only offer opinions.

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters.

AND absolutely no one seems able to make a good amber LED.

 

[George Herold]

On Wednesday, November 30, 2016 at 12:30:26 PM UTC-5, default wrote:

On Sun, 27 Nov 2016 02:50:58 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 25/11/2016 10:49 PM, default wrote:

So how do they make LEDs to shine a certain color?

Your Google is broken?

Was expecting a few sentences as answers from you....

Not being in the manufacture of leds I can only offer opinions.

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters.

AND absolutely no one seems able to make a good amber LED.

Define "good", there are hundreds listed on digikey.
I bought some cree through hole ones a few years ago..

George H.

 

[Mr. Man-wai Chang]

On 1/12/2016 1:30 AM, default wrote:

Not being in the manufacture of leds I can only offer opinions.

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters.

AND absolutely no one seems able to make a good amber LED.

A research topic that could earn you a Ph.D?

 

[George Herold]

On Thursday, December 1, 2016 at 1:17:28 PM UTC-5, default wrote:

On Thu, 1 Dec 2016 07:01:35 -0800 (PST), George Herold
gherold@teachspin.com> wrote:

On Wednesday, November 30, 2016 at 12:30:26 PM UTC-5, default wrote:
On Sun, 27 Nov 2016 02:50:58 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 25/11/2016 10:49 PM, default wrote:

So how do they make LEDs to shine a certain color?

Your Google is broken?

Was expecting a few sentences as answers from you....

Not being in the manufacture of leds I can only offer opinions.

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters.

AND absolutely no one seems able to make a good amber LED.

Define "good", there are hundreds listed on digikey.
I bought some cree through hole ones a few years ago..

George H.

Wavelength - what they like to call amber is really yellow.

Have you been to the digikey site? They list led's by wavelength too.
What wavelength do you want?

George H.

 

[Mr. Man-wai Chang]

On 1/12/2016 11:01 PM, George Herold wrote:

Define "good", there are hundreds listed on digikey.
I bought some cree through hole ones a few years ago..

Talk to photographers and camera-men?

 

[default]

On Thu, 1 Dec 2016 07:01:35 -0800 (PST), George Herold
<gherold@teachspin.com> wrote:

On Wednesday, November 30, 2016 at 12:30:26 PM UTC-5, default wrote:
On Sun, 27 Nov 2016 02:50:58 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 25/11/2016 10:49 PM, default wrote:

So how do they make LEDs to shine a certain color?

Your Google is broken?

Was expecting a few sentences as answers from you....

Not being in the manufacture of leds I can only offer opinions.

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters.

AND absolutely no one seems able to make a good amber LED.

Define "good", there are hundreds listed on digikey.
I bought some cree through hole ones a few years ago..

George H.

Wavelength - what they like to call amber is really yellow.

 

[default]

On Thu, 1 Dec 2016 10:27:23 -0800 (PST), George Herold
<gherold@teachspin.com> wrote:

On Thursday, December 1, 2016 at 1:17:28 PM UTC-5, default wrote:
On Thu, 1 Dec 2016 07:01:35 -0800 (PST), George Herold
gherold@teachspin.com> wrote:

On Wednesday, November 30, 2016 at 12:30:26 PM UTC-5, default wrote:
On Sun, 27 Nov 2016 02:50:58 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 25/11/2016 10:49 PM, default wrote:

So how do they make LEDs to shine a certain color?

Your Google is broken?

Was expecting a few sentences as answers from you....

Not being in the manufacture of leds I can only offer opinions.

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters.

AND absolutely no one seems able to make a good amber LED.

Define "good", there are hundreds listed on digikey.
I bought some cree through hole ones a few years ago..

George H.

Wavelength - what they like to call amber is really yellow.

Have you been to the digikey site? They list led's by wavelength too.
What wavelength do you want?

George H.

620 mounted in a 1157 auto lamp replacement.

 

[George Herold]

On Thursday, December 1, 2016 at 7:31:18 PM UTC-5, default wrote:

On Thu, 1 Dec 2016 10:27:23 -0800 (PST), George Herold
gherold@teachspin.com> wrote:

On Thursday, December 1, 2016 at 1:17:28 PM UTC-5, default wrote:
On Thu, 1 Dec 2016 07:01:35 -0800 (PST), George Herold
gherold@teachspin.com> wrote:

On Wednesday, November 30, 2016 at 12:30:26 PM UTC-5, default wrote:
On Sun, 27 Nov 2016 02:50:58 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 25/11/2016 10:49 PM, default wrote:

So how do they make LEDs to shine a certain color?

Your Google is broken?

Was expecting a few sentences as answers from you....

Not being in the manufacture of leds I can only offer opinions.

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters.

AND absolutely no one seems able to make a good amber LED.

Define "good", there are hundreds listed on digikey.
I bought some cree through hole ones a few years ago..

George H.

Wavelength - what they like to call amber is really yellow.

Have you been to the digikey site? They list led's by wavelength too.
What wavelength do you want?

George H.

620 mounted in a 1157 auto lamp replacement.

Oh and you want it to run from 12V automotive power too, I assume.
I'd try an automotive place then.

George H.

 

[default]

On Fri, 2 Dec 2016 07:26:05 -0800 (PST), George Herold
<gherold@teachspin.com> wrote:

On Thursday, December 1, 2016 at 7:31:18 PM UTC-5, default wrote:
On Thu, 1 Dec 2016 10:27:23 -0800 (PST), George Herold
gherold@teachspin.com> wrote:

On Thursday, December 1, 2016 at 1:17:28 PM UTC-5, default wrote:
On Thu, 1 Dec 2016 07:01:35 -0800 (PST), George Herold
gherold@teachspin.com> wrote:

On Wednesday, November 30, 2016 at 12:30:26 PM UTC-5, default wrote:
On Sun, 27 Nov 2016 02:50:58 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 25/11/2016 10:49 PM, default wrote:

So how do they make LEDs to shine a certain color?

Your Google is broken?

Was expecting a few sentences as answers from you....

Not being in the manufacture of leds I can only offer opinions.

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters.

AND absolutely no one seems able to make a good amber LED.

Define "good", there are hundreds listed on digikey.
I bought some cree through hole ones a few years ago..

George H.

Wavelength - what they like to call amber is really yellow.

Have you been to the digikey site? They list led's by wavelength too.
What wavelength do you want?

George H.

620 mounted in a 1157 auto lamp replacement.

Oh and you want it to run from 12V automotive power too, I assume.
I'd try an automotive place then.

George H.

Did.

First set were too whimpy (wimpy) to trust my life to. Not nearly
bright enough compared to incandescent. And still yellow.

Second set were dimmer than incandescent, but marginally safe, but
still yellow and too close to headlights on low battery voltage.

Now Osram does make some that look like they could do the job, but at
2 bucks each, and dealing with surface mount parts, and 3 Watts means
serious mounting and heatsinking. I don't want to redesign the whole
front end of my truck - just replace the amber 1157's with leds...

 

On 1/12/2016 1:30 AM, default wrote:

Not being in the manufacture of leds I can only offer opinions.

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters

Hey, green is for transportation lighting, not simply 'bastard coloring' !

 

[whit3rd]

On Wednesday, November 30, 2016 at 9:30:26 AM UTC-8, default wrote:

It is my opinion that pure colors (one and only one narrow wavelength)
are much more pleasing than bastard colors like pinks and greens made
with multiple dopants and fluorescent or phosphorescent secondary
emitters.

Well, monochromatic light means your eyes' lenses aren't making blurs
at the edges when you focus. Aside from the red/blue boundary causing
you to get eyestrain trying to resolve, though, those 'pure' colors cause
dreadful illumination artifacts. An item bought under artificial light
ought NOT to have an entirely different color when seen in daylight.

Few-hours-from-noon sunlight is the "white" to aim for, and it's HARD to do.

 

[rickman]

Jim Thompson wrote on 11/26/2016 4:52 PM:

"Mr." Man-wai Chang is a known troll. Killfile and enjoy the silence

Lol! Takes one to know one!

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998

 

[rickman]

John Larkin wrote on 11/28/2016 12:43 PM:

On Mon, 28 Nov 2016 08:39:50 +0000, Andy Bennet <andyb@andy.com
wrote:

On 25/11/2016 09:21, Mr. Man-wai Chang wrote:

Are they true orange LEDs?

Is "orange" the same as "amber"

Not-so-bright orange is the new black.

Four LEDs (R, G, B, D) can synthesize any color, including black.

I'm not familiar with this. What is D?

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998