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Do you have any suggestions for prisms or lenses?

Ok, so any help with the kind of lens or whatever optics I need to focus it?

So I tried the 300mw IR and it focuses fine. That means the diode is just really weird I guess. :undecided:

Yes, I've put the lens closer and farther away from the diode and it only focuses a few cm away from the lens regarding the distance the lens is from the diode. I have a 300mw IR but I replaced it with the 1W cuz the 300mw was to weak. I'll try powering up my 300mw IR when I get the chance and...

Also, I'm using a driver that specs for 100-500mw diode. It will just keep the diode from going full power right? Would it have any other affect on the diode?

I have it in a module like this o-like one: 9mm diode housing w/glass lens for red laser or 808nm | eBay I tried using the lens it came with and this lens: 660nm/808nm Glass Collimating Lens/M9P0.5 Metal Frame | eBay The problem it not that it doesn't burn at a distance but that it doesn't...

Yea I have safety goggles for most of the wavelengths. Any ideas concerning the topic?

I just built a 1W 808nm IR laser. It works really well and burns nicely but only at about 5cm. No matter what distance I put the lens at it's focused only to one point. :confused: I tried 3 different lenses that I had but they all do the same thing. I've built a green, red and violet laser...

Thanks Dave, Yea, I noticed the driver and diode spec as well but since the diode is only $4 I bought another one. I didn't get to try it out yet, will be doing that soon. If it doesn't work I guess I'll just have to buy a different driver.

I have a 300mw 808nm laser diode w/driver and this lens: 660nm/808nm Glass Collimating Lens/M9P0.5 Metal Frame - eBay (item 260724564678 end time Jun-18-11 05:24:39 PDT) I looked at vids and pics and everyone has a pinkish dot but I have a dim red dot. do I need a special lens or something to...

Are these good? $30 Protection Glasses for 808nm~850nm Infrared Laser I might get them if I can't find anything cheaper.

I don't have goggles for it. I was thinking of getting some before starting the project but I looked on ebay and they're expensive. I got 405nm-532nm goggles for $20 but the lowest I found for 808nm was $40. Any place I can get a pair for cheap?

I really don't think there is a point in getting a 500mw for $22 when I can get a 1W for $12. If I put either one together with that driver I'll get the same amount of power out and maybe a bit more out of the 1W. But I'm thinking just for starters, since I've never built an 808nm, I'll get one...

I don't have the diode yet but I'm thinking of getting something like this: 808nm diode | eBay I need about 1.2A for max power so I guess it wont work. What would I need to build my own driver? I have a basic idea of how to do it but have never built one.

Will this 808nm driver work with a 808nm 1W diode. It says 100mw-500mw so I'm not sure. 808nm 100-500mw Laser Diode Driver Reverse Protection | eBay

Hmm..I wonder how it got fried so easy. oh well, good thing it's only $4. I'll order it again and be more careful next time. I'm using the AA size lithium ion batteries. I don't think I'll be able to get pics up, but I know I hooked it up exactly by the instructions and polarities that came...

I bought a brand new laser diode: new 150mW 650nm Burning Red Laser Diode profession | eBay and put it together with a new driver: 200mW red laser diode driver /150-350mA adjustable | eBay but when I hooked it all up the diode seemed really dim. I have to put it like 1inch away from something to...

Hmm..that's a bit of a problem. :thinking: Do you think draining the battery to a lower voltage is a good idea? It says on the package that a fully dead battery is 2.4V so I think I should be ok. Since the diode is already running at full power, I guess the diode is just too weak for burning...

I might have figured it out. Can the laser dim because of overheating? cuz if I take it out and cool it really fast and put it back in it becomes bright again. so it's not a battery problem.

Ok, so I put together a green laser using 532nm 100mw Green Laser Diode Module DIY/Lab/Industrial | eBay and 1 14500 lithum ion battery to power it up. it says 100mw with 10% tolerance so that means it's ganna be lower, but it's unable to burn anything at all. I can kinda see the beam inside...