[sdiy] Diffused LEDs tip

[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

Mikael




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 ...
>
>
> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of
> mike:prophecysound
> Sent: zondag 25 juli 2004 22:11
> To: Tim Heffield; Synth-Diy
> Subject: RE: [sdiy] Diffused LEDs tip
>
>
> Neat! You can also fabricate 'custom' bright / diffused LEDs with the
> assistance of a grinding wheel and a steady hand. A lot of ultra-bright
> LEDs are good for projection on other objects, whereas for visibility
> it's better to have the light 'projected' onto and diffused through the
> body of the LED itself.
>
> Mike
>
>
>