Three new laser builds from npr :D RGB

Well i haven't upload or posted anything for a few months. Here are some quick pictures of my recent builds.

This is my Osram pl515 30mw green laser with driver in a stainless steel host from survival lasers. This diode is one out of the three that are on the market by Osram.
you can get the module here
515nm 20mW diode based Laser Module 12x30mm, AixiZ

Laser not on.


Laser on.



The beam profile is a single mode which hardly diverges.


Next laser is my Mitsubishi 500mw 635nm red in an red anodized aluminum heat-sink.



Last but not least, My 2+ Watt Nichia 445nm 9mm diode in an extended copper heat sink and module for the best thermal conductivity when driven at 1.8A. Only if I could find a copper host...


These are some of my most successful builds as of today. Thanks for viewing.
BTW, i got the red and blue diodes from DTR off of amazon. Thanks to him otherwise I'd have to deal with paypal. -_-

Nice!
One question...why are the modules sticking out of the heatsink so far...? The point of heatsinks is to contain the module, and transfer heat away from the diode...With what you have, the only path for heat to get away from the diode is through the thin walled module.

You do realize that the back part of the module unscrews and we all throw them away. They have 0 use in laser builds and unless the host is designed to take the back part, is completely useless and will cause the module to stick out.

FYI those lasers are not heatsinked at all when the laser module sticks out that far. It needs to be flush with the heatsink in order to be effective

EDIT: the 445nm is the only one that looks correct. Its a simple fix so dont think im bashing you. Its just if you continue to use them as is, you will kill your diodes from heat

Livinloud said:

You do realize that the back part of the module unscrews and we all throw them away. They have 0 use in laser builds and unless the host is designed to take the back part, is completely useless and will cause the module to stick out.

FYI those lasers are not heatsinked at all when the laser module sticks out that far. It needs to be flush with the heatsink in order to be effective

EDIT: the 445nm is the only one that looks correct. Its a simple fix so dont think im bashing you. Its just if you continue to use them as is, you will kill your diodes from heat

Click to expand...

Yea that's what i was saying...and I think I actually have a full module in my 638. Doesn't change anything about the laser, I just didn't bother taking it off

First thing I do is rip that stupid thing off. IMO its only good for when DTR ships a diode with a driver attached, it protects the solder joints of the diode I have a drawer filled with these module "caps" or whatever they are called. Never throw them out since idk if I could find a use for it else wheres.

crazyspaz said:

Nice!
One question...why are the modules sticking out of the heatsink so far...? The point of heatsinks is to contain the module, and transfer heat away from the diode...With what you have, the only path for heat to get away from the diode is through the thin walled module.

Click to expand...

That is a good question, unfortunately, the driver pill doesn't allow much room for the driver to go in all the way, i may fix this later by ordering some blank boards with the open cavity so it gives the extra 2ish centimeters to fit in. But for now the red and green laser is going to have to look funny. The blue laser looks fine though.