Full color spectrum LEDs

Here is an example

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The primary colors are at the apexes of the triable. All those colors that are inside the triangle can be generate by RGB. These generated colors include yellow, violet and even white.

Reply to
upsidedown
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Yes. This is exactly it. Electron backlit phosphors and LEDs are BOTH subtractive color mixing schemas. Meaning when all three are lit, the result should be white. In additive schemas, opaques are used and mixing red green and blue together forms black.

LEDs are also typically of a very narrow emission window. So. like with an old CRT TV, the industry began making LED "color displays" by using an "RGB" layout of three LED per "pixel element" of their display.

I think a huge one exists at Churchill Downs or Keenland horse tracks.

The problem is to work correctly throughout the color gamut, the intensity of each olor pixel element needs to be also ajustable. LEDs are not only narrow banded color band output, but they are also not very good at providing a wide illumination intensity range.

So such displays usually have several issues from the standpoint of a video afficionado grading it as a proper display.

Reply to
DecadentLinuxUserNumeroUno

This article might be of interest: "The Evolution of LED Backlights" The basic problem with LED color arrays is that the different LED's decrease in output at different rates. Red lasts the longest, while blue decreases more rapidly. In order to get a decent "white" background from multiple LEDs, some LED TVs or monitors have filters and photo sensors built in to correct for the drop in output.

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Jeff Liebermann     jeffl@cruzio.com 
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Reply to
Jeff Liebermann

Aircraft with multi-specral cameras

Both are available, leds modules with individual color control ("neopixels" for computer control)

and strings with R, G, and B channels for analogue control, whole string one colour - could be connected to DMX etx.

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Reply to
Jasen Betts

plainly it does not include violet. It includes purple which is similar.

NT

Reply to
tabbypurr

that simply has nothing to do with reality.

Reply to
tabbypurr

You're a goddamned idiot. Are you a member of the Trump family, boy?

Tri-LED display pixel setups have ALWAYS had a problem recreating the full gamut and the reason very much so IS the fact that one cannot control LED intensity well enough to cover the entire gamut.

Fuck you, you characterless bastard. YOU have nothing to do with reality.

Reply to
DecadentLinuxUserNumeroUno

put the mirror down. plonk.

Reply to
tabbypurr

You're expecting reality from AlwaysWrong?

Reply to
krw

It's well known that colors have various emotional effects on people. In your case, I suggest you remove red and yellow colors from your working environment. Red: "Can intensify anger" Yellow: "Too much yellow can be overpowering and make you feel angry" A good substitute would be Green: "Is a soothing and relaxing color"

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Jeff Liebermann     jeffl@cruzio.com 
150 Felker St #D    http://www.LearnByDestroying.com 
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Reply to
Jeff Liebermann

I think it's called "institutional green".

Reply to
krw

I think black would be better. Complete total blackness. A good long stretch of that might make him rethink his relationship with other people. You never know.

NT

Reply to
tabbypurr

Hello AlwaysWrong

You get additive and subtractive mixing mixed up.

In addition, in subtractive mixing yellow, cyan and magenta is usually used.

Use PWM in addition to linear control to vary the intensity.

For a scanned display adjust the LED current normally, but for 50 Hz signals, use a high frame rate, such as 300 Hz but activate the pixel for one, two up to 6 frames to drop the intensity to 1/6, 2/6 to 6/6 of the minimum linear intensity.

Reply to
upsidedown

Oh looky folks... The immature little bitch retard proves yet again just who the true idiot is.

Hint, tabbytard... it isn't the target of your munge stupidity, it's you.

Reply to
DecadentLinuxUserNumeroUno

PLONK

Reply to
oldschool

I see you've met DimBulb.

Reply to
krw

Here, ya plonktard asshole:

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Put that in your field of view and smoke it.

Reply to
DecadentLinuxUserNumeroUno

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