Subject:
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Re: Build your own laser-emitting brick!
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 24 Feb 2000 02:06:21 GMT
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Original-From:
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Shawn Menninga <smq@dwarfrune.IHATESPAMcom>
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Viewed:
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941 times
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At 04:48 PM 2/22/00 -0800, you wrote:
> I just finished building a laser diode into a 2x4
> brick. The parts cost about $20 total. If you're
> interested in how it's done, check my web page:
Very nice. One other thing you might want to mention on the web
page: In many cases the lens assembly also functions as a heat-sink
for the laser diode. While the whole assembly will only get mildly
warm, even in a sealed enclosure, removing the diode from the lens
assembly will probably cause it to overheat, potentially damaging
the diode, the brick, or in the extreme case even starting a fire.
I used to work for a company that made laser-diode based products,
and it was my experience that even most low-power diodes used in
laser pointers and the like generate enough heat to fry themselves
without an adequate heat-sink, so in jockeying everything around to
fit in the brick, people will need to be careful not to break the
thermal connection between the diode and the lens assembly.
> http://www.blueneptune.com/~maznliz/marius/rcxlaser.shtml
-SMQ Shawn Menninga smq@dwarfrune.com
--=--=--=--=--=--=--=--=--=--=--=--=---=--=--=--=--=--=--=--=--=--=--=--=--
"Well I've wrestled with reality for thirty-five years now, doctor, and I'm
happy to state I've finally won out over it." -- Elwood P. Dowd, Harvey
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