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From: jeh@cmkrnl.com
Newsgroups: sci.electronics
Subject: Re: Blue LED's
Message-ID: <1993Apr25.181845.1882@cmkrnl.com>
Date: 25 Apr 93 18:18:44 PDT
References: <Zw6F3B1w165w@inqmind.bison.mb.ca> <C5yqDE.Cq0@ecf.toronto.edu> <1993Apr24.061136.13741@phx.mcd.mot.com>
Distribution: sci.electronics
Organization: Kernel Mode Systems, San Diego, CA
Lines: 14

In article <C5yqDE.Cq0@ecf.toronto.edu> gladman@ecf.toronto.edu (GLADMAN AVIV) writes:
>That's why you
>don't find blue LEDs or, for that matter, some other colour of LEDs. That
>is not to say that blue LEDs can't be found.  I've seen 'blue' LEDs sold,
>but they were just your typical visible light LED in a blue plastic covering.

No.  The blue LEDs sold down the street are in milky-white plastic.  

And, fyi, putting a filter on a "typical visible light LED" (presumably meaning
a non-blue one) won't produce blue light.  A filter can only block light, it
can't generate wavelengths that aren't there to start with.  

	--- Jamie Hanrahan, Kernel Mode Systems, San Diego CA
Internet:  jeh@cmkrnl.com  Uucp: uunet!cmkrnl!jeh  CIS: 74140,2055
