[sdiy] Diffused LEDs tip

[Bert Schiettecatte]

Thanks for the tip. I knew about EL but never looked into it since I'm
looking for a way to mix red, green and blue light to create any colour
I want.. I haven't found an EL material that does all three colours? 
Also, somebody told me EL is not very bright? I'm trying to make a
visual effect in the dark so maybe the level of EL is adequate...


-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of J. Larry Hendry
Sent: dinsdag 27 juli 2004 14:03
To: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Diffused LEDs tip


All Electronics often has an assortment of these electroluminescent
strips (EL).  I see they have one now that is 3" x 3.1" catalog # EL-8.
That's not much bigger than 6cm (where's my calculator?). 1-800-826-5432
www.allelectronics.com One thing you have to watch with them. They are
surplus.  If you find what you want, but all of them you need.  You
cannot always count on them having them later. Larry

----- Original Message -----
From: <mikael at mikmo.dk>
Or what about those light panels used to illuminate backlit notebook
monitors, sometimes they are really cheap at the electronic goldmine,
right now i just can't remember what they are called, and maybee they
are a little on the large side for a 6 cm x 6 cm panel.
www.goldmine-elec.com

Citat "Metzger, Michael A" <MAMETZGER at partners.org>:

> Best way I've seen to evenly illuminate a panel is to is to.....place 
> it
in
> front of an illuminated panel. For 6cm x 6cm I'd suggest about frosted

> 4 LED's behind a frosted panel. Then on top of that place the panel 
> you want to
light
> up. It works best if the final panel is frosted or has a pattern on it
(photo
> transparency, etc).
>
>
> ----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl 
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Bert 
> Schiettecatte
> Sent: Sunday, July 25, 2004 5:22 PM
> To: synth-diy at dropmix.xs4all.nl
> Subject: RE: [sdiy] Diffused LEDs tip
>
>
> I tried something like that a while ago... Seems to work, but it is 
> not easy to really do a uniform lighting. Most of the time you still 
> see the light pattern thrown by the LED lens...
>
> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl 
> [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of Tim Heffield
> Sent: zondag 25 juli 2004 23:05
> To: Synth-Diy
> Subject: RE: [sdiy] Diffused LEDs tip
>
>
> You might try putting polished aluminium foil on three sides and the 
> bottom (assuming it is clear acrylic)and then light it from the one 
> side edge without the foil.  You could lightly sand the top side or 
> spray it with the "Glass Frosting" spray to evenly diffuse the light.

> You would have to play with how many LEDs it will take to evenly light

> it.
>
> --Tim
>
> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl 
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Bert 
> Schiettecatte
> Sent: Sunday, July 25, 2004 4:38 PM
> To: synth-diy at dropmix.xs4all.nl
> Subject: RE: [sdiy] Diffused LEDs tip
>
>
> Now that we're on the topic, anyone got experience designing and 
> implementing light guides for LED lighting? I've been trying to find a

> cheap way to light a piece of acrylic 6cm x 6cm in a uniform way using

> LED(s). Sort of a light tile ...