just salvaged a blu ray laser - first time noob

I have been reading through the forums and would like to build my own laser from a blu ray diode. But I still have some questions. I pulled the blu ray diode and the red diode from a magnavox blu ray player.

-how do I identify positive and neg? the red has four legs and the blu has 3

-I am looking at building my own driver from the spec sheet posted here by Daedal. Will this driver work for both red and blu ray laser diodes? This circuit doesn't specify an input voltage, so what should it be and what do most people use as a source? (battery wise?)

-is a lens required? or are people just using the straight diode, with nothing in front of it? If using a lens, what are most people using?

Thanks!

pin out bluray :http://www.google.com/imgres?imgurl...Y3XCA&esq=1&page=1&ndsp=21&ved=1t:429,r:2,s:0
and btw dont use the IR diode

for blu ray you will need a power source of at least 7-8 v ..

a lens is required so u can focus your beam...
just use a normal aixiz module with a acrylic lens( already comes with one)

Thanks for the reply. Why not use the IR? Now what do you mean it already comes with one?

Order this:
HighTechDealZ - Aixiz Laser Module - Blank

And a lot more stuff, since shipping is free and seller is awesome

Anyhow, this little machined piece is meant to hold your diode and lens in place,
You pressfit the diode into the socket, and thread the lens from other side.

Lens already come with this housing. That's what he meant

Good luck! Tell us how your build goes, if there is any trouble, feel free to PM me with questions!
:beer:

The 4 pin diode is actually a red/ir combo. But since it is just a reader it really isn't worth making anything out of. It wont be any better than a dollar store pointer.

The blu-ray diode will need to be put in an axis module. You have to press it in but just do a search and you will find plenty of threads about how to do it.

I guess since this is a reader i would suggest about 25 ma of current. For probably somethin near 5mw. You are using an lm317 so this means you need 50ohm resistor for Rsense. I suggest just using a resistor and no potentiometer.

Your voltage source just needs to be greater than 6v, a good and easy source would be a 9volt battery.

I am running a bluray diode from a samsung player at 115ma and getting about 70mw. I would probably go a little lower if I had it to do over again, when I made the build I thought all bluray player diodes were the same as PHR diodes.

Wow I assumed your diode was more along the lines of a ps3 diode or so. At that current don't expect a long life.

benmwv said:

Wow I assumed your diode was more along the lines of a ps3 diode or so. At that current don't expect a long life.

Click to expand...

Yea I am surprised it is still alive as well. I made it last march before I know all bluray player diodes are not PHR diodes. But I have run it though many batteries and it is still going strong.

Came out of a player that looked like this