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ArcticMyst Security by Avery

5mW keychain red laser has no diode?

Joined
Jun 21, 2010
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7
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Hello,
This is my first thread and it's been about a month since i've started to take interest in lasers.
Well I've bought 3 2dollar keychain lasers for some taking-apart, and i've noticed they had no "diode" in them. At the place where there is supposed to be a diode, there is a flat chip with something tiny sticking out of it.
what do these lasers use to make the laser without having a diode?
 





daguin

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Joined
Mar 29, 2008
Messages
15,989
Points
113
Hello,
This is my first thread and it's been about a month since i've started to take interest in lasers.
Well I've bought 3 2dollar keychain lasers for some taking-apart, and i've noticed they had no "diode" in them. At the place where there is supposed to be a diode, there is a flat chip with something tiny sticking out of it.
what do these lasers use to make the laser without having a diode?

That "flat thing" IS the diode. The diode is not in a CAN like you are used to seeing. That's all.

Peace,
dave
 

Benm

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Joined
Aug 16, 2007
Messages
7,896
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113
Indeed, i've seen the laser diode chip soldered/mounted directly on the circuit board in really cheap pointers. Because their little power, they don't need much cooling and this setup suffices.
 
Joined
Nov 14, 2009
Messages
756
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I disassembles a DVD drive and thew it out because I did not know what to do with it. Is there something like a aixiz blank to focus the beam and hold the laser?
 




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