RE: Led lights

["Alistair Watkins" <ukha@xxxxxxx>]

Coool!

I am just buying all the white LEDs I can find at the moment to test for
brightness, and colour and stuff.. I'm just about to move home, and I
want to use them for accent lighting in the lounge and kitchen, and
garden lighting.. But I think it will probably be Luxeons in the garden.
Also keen to find some LEDs with a nice wide 'spray' of light 10/15
degrees is a bit to short.

Anyone else attempted this kinda thing? (I have read about the kitchen
and gardens in the archive, but no one gives details of the types and
brightness's of LEDs used, as well as their supplier!)

Alistair Watkins  mail@xxxxxxx
http://www.infinitefunk.co.uk


-----Original Message-----
From: Jon Whiten [mailto:jon@xxxxxxx]
Sent: 06 February 2004 17:44
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Led lights


I believe that the White LED is a blue chip behind a phosphor coating
(like a Fluorescent tube) and it is the glowing phosphors that give the
white light.

We use a few hundred thousand 5mm LEDs here at work (Red, Amber, Green
and White but mainly red though).  If anybody is particularly interested
I could try and sort some Specs and Prices.


Regards

Jon Whiten
http://www.whiten.co.uk
-----Original Message-----
From: Kilgore, Andrew [mailto:amkilgore@xxxxxxx]
Sent: Friday, February 06, 2004 5:08 PM
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Led lights

What the hell - I'll have a guess at this one.
(Please try to hold back your laughter until the end ;o))

>From my school days, I think I remember something about light
>wavelengths.
As I recall, one end of the visible spectrum has a wavelength of ~400nm
(blue?) and the other end has a wavelength of ~700nm (red?).
I think the problem with "white light" is that it doesn't have a
set
wavelength because its a mixture of all the colours from 400nm to 700nm.
So, white light is made up of all colours - remember at school shinning
white light through a prism and it "separating" all the
colours...?

OK, that's my best guess - anyone any other ideas...?

Thanks,
Andy.



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