We are using external diffusers as well, with little improvement.

Andy









"Bennett, Matt" <Matt.Bennett@ANDREW.COM> on 06/26/2000 02:10:09 PM

Please respond to pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU>








 To:      PICLIST@MITVMA.MIT.EDU

 cc:      (bcc: Andrew Kunz/TDI_NOTES)



 Subject: Re: [OT]: 3 colors from an LED








I have not seen any device that mixes the colors perfectly- I can always see
where the green die is and where the red die is.  You might have some luck
if you use a light-pipe, which should mix the colors a bit more.  Also a
more opaque, less focused package could help too.

Matt Bennett

-----Original Message-----
From: Andrew Kunz
Sent: Monday, June 26, 2000 12:49 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: 3 colors from an LED
Importance: Low


I need to generate Red, Amber-ish, and Green from a single LED body
(standard
T1.75 size).

I am limited to a common-cathode device with two anodes to select the
desired
color.

The P391 from Digi-Key doesn't blend the colors well when both LEDs are
turned
on, it's obviously a red and a green LED in the same package.

Anybody have any experience with LEDs that _will_ work well?  Vendors?

Thanks.

Andy