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Hello Everyone, I have a little 445nm a140 LD in an aixiz housing with an acrylic lens. I have about 900milliamps goin to it. I have seen posts where people say anything over 300mw Must have a glass lens. But I have not had serious issues with it. I do feel that the quality of the beam is not...

Hello Everyone, This is my very first completed laser project :D I got an A140 diode already installed in an Aixiz module from Danglasers. I made a LM317 driver with a one ohm resistor to bring it to near max current. The whole thing is crudely mounted on a 9V battery holder. It was getting...

Hello Everyone, I've successfully made a postive voltage regulator with the LM317, for a red 200mw diode. I am a tad bit confused about something, and I was hoping someone here would have the knowledge to clear it up. When I was testing for voltage, I noticed that as I increased the...

Hello Everyone, I recently purchased a 200mw laser from chinavasion. It came DOA. I tried to communicate with them, but basically it was a whole lotta nothing done. Eventually I just bit the bullet and decided to try to fix this myself. I believe that the driver circuit is blown, and I want to...