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- Oct 18, 2008
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After reading about a thousand posts, about the square LD's being useless, i will show you a simple diy flashlight laser using these.
The flashlight is a Panasonic BF-325.
I am using a heatsink for an ordinary round LD, to which i have solderet some of the copper heatsink from the drive, so that it will fit perfectly in the flashlight.
I am not using a driver, but running it directly off two AA batteries. (i don't use drivers in any of my diy lasers, and i have never burnt out a LD once it was in its heatsink) .
The lens is actually the lens, that came with the flashlight, which gives a beam diametre of about 5-10 mm, no other lenses required.
In the first picture you can see, that i had to file the hole in the middle of the heatsink square, to fit the diode. The diode is solderet to the heatsink, on the backside, to give it sufficiant cooling(do it fast, so you don't blow the LD). build the heatsink, before soldering in the LD, as too much heat will destroy the LD.
The red stuff is silicone i used to make everything stay where i want it to be - Normally i would use epoxy,but i was all out.
The flashlight is a Panasonic BF-325.
I am using a heatsink for an ordinary round LD, to which i have solderet some of the copper heatsink from the drive, so that it will fit perfectly in the flashlight.
I am not using a driver, but running it directly off two AA batteries. (i don't use drivers in any of my diy lasers, and i have never burnt out a LD once it was in its heatsink) .
The lens is actually the lens, that came with the flashlight, which gives a beam diametre of about 5-10 mm, no other lenses required.
In the first picture you can see, that i had to file the hole in the middle of the heatsink square, to fit the diode. The diode is solderet to the heatsink, on the backside, to give it sufficiant cooling(do it fast, so you don't blow the LD). build the heatsink, before soldering in the LD, as too much heat will destroy the LD.
The red stuff is silicone i used to make everything stay where i want it to be - Normally i would use epoxy,but i was all out.