Led's

[filiep]

led front and back lights and interior would reduce the energie consumption.

Led's on the side would be a good idea for visability as the car will be ultra silent.

[jerrsvolt]

The use of LED's for everything but the headlights is a no-brainer. The Volt won't be produced in any significant volume until 2012. By then everybody will have LED's.

[Andy0x1]

May I ask what the recent craze in LED lighting is all about?

No offense - just trying to understand.

LED's have a rather terrible color rendering index about them.

They are good at 'pure' monotones and low latency on-off switching however.

Brake lights / turn signals? Sure... But Cabin lighting? Ish....

[pdt]

Originally Posted by Andy0x1

May I ask what the recent craze in LED lighting is all about?

Sorry if this is too obvious, but...

1) efficiency
2) lifetime
3) No Hg

I saw a good talk from a scientist from Philips Lumileds about LED technology. LED technology has progressed dramatically. Color spectrum is getting better as they develop better phosphors. One of the interesting things about the lifetime is that the LED devices themselves have very long life, but in actual products lifetime is determined by other components.

I like the LED backlight in my laptop. The new LED backlit LCD TVs consume much less power.

[hermperez]

vibration resistance..

[Herto]

Plus they need less space than a bulb, but usually need different command (pwm)
And, it may be an advantage or not, their light is quite directionnal.

[Andy0x1]

Originally Posted by pdt

Sorry if this is too obvious, but...

1) efficiency
2) lifetime
3) No Hg

I saw a good talk from a scientist from Philips Lumileds about LED technology. LED technology has progressed dramatically. Color spectrum is getting better as they develop better phosphors. One of the interesting things about the lifetime is that the LED devices themselves have very long life, but in actual products lifetime is determined by other components.

I like the LED backlight in my laptop. The new LED backlit LCD TVs consume much less power.

LED's produce such a terrible spectrum that yes, phosphors are used on UV LED's to improve the spectrum. The wider the spectrum, the less efficient things typically get.

Surface-conduction Electron Emitter Displays (SED's) Field Effect Displays (FED's), Plasma's (PDP's), and in some cases the Cathode Ray Tubes (CRT's) are the benchmark of display quality.

Last I heard the best LCD Display you could buy was backlit using an array of locally dimming LED's to improve contrast performance. Purportedly this particular display was the closest LCD has come to dethroning the current king the Pioneeer Kuro Plasma Display.

OLED displays (not to be confused with LED backlit LCD displays) offer very good image quality as well, however the phosphors die at drastically different rates, and as a result the display doesn't age well.

The Kuro consumes power like no other, but perfromance has its cost.

Display tech and lighting however do not go hand in hand, as the real world has an infinitely wider color gamut.

[Andy0x1]

Originally Posted by Herto

but usually need different command (pwm)

Do you have any idea what your talking about or are you just using words you read with random syntax?

[hermperez]

the scary part is that understand what he said.

[Herto]

Sorry guys...
I meant lightning command for LEDs is usually a little bit more complex than the on used for incandescent light bulb.
Pulse-width modulation is often used to control lightning.
Then I wrote LED's light is not omnidirectional whereas incandescent light bulb's light generally is. That can be a drawback for an application and value for another.

I hope this message is more understood.