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Thread: eBay Mitsubishi 300mW 635nm

  1. #11
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    Quote Originally Posted by Stoney3K View Post
    audiences don't care if you have fat beams being scanned through ping pong bats. They just want the show to be BRIGHT.
    well remember brightness is not just more mW but power density too...

    but i use a pair of 650 flashlights along with my 642nm kvant flashlight in my projector and they work pretty well

  2. #12
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    Power density is important to me and I'd like my beam shows to have beams with as little fringing as possible.

  3. #13
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    I might actually pick up a pair of these. I am working on a lumia to go along side my 1.2W projector... old school Laserium style! Green, I have about 220mW of. Blue.... everyone has! :P . Red though, hard to get decent power. I was looking at a 500mW 635nm c-mount, but I don't want to spend $510 for it, then have to spend time and money on fabrication. I could just throw a couple of these into my brass mounts and run them through a PBS. After running through a couple of lumia wheels, who cares about beam specs!
    If you're the smartest person in the room, then you're in the wrong room.

  4. #14
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    I've had my hands on them. Unless you want a lumia, dont waste your time. Its much fatter then the data sheet reads. Or more correctly READ the definitions on the data sheet. 20-30% of the power will not even make it to the collimation lens.
    These are VIDEO diodes, and they are excellent for video projectors.

    Steve

  5. #15
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    but what about using telescope style optics to get the beam profile better.
    Ive seen it done before with a setup of reds but i never knew what the optics were called to buy them.
    If you could do a quad setup or a 8 setup with the right optics you could get a beam profile around the size of the 445nm lasers beam profile right?
    I think the only problem we will have is from what i have seen there is a weird second dot, but i think if you were to knife edge it you could cut it off.

  6. #16
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    Default Emitter size

    From another thread:

    Originally Posted by Garoq

    According to the distributor, the emitter size is 2µm x 40µm for both 638nm 300mW (CW) LD ML520G71 and 500mW (CW) ML501P73 series.

  7. #17
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    I didn't see this posted anywhere on PL yet. My apologies if I've just missed it and this is redundant (in fact, I'm sure it MUST be here somewhere).

    http://laserpointerforums.com/f50/he...tml#post971012

    Synopsis - These "300mW" Mitsubishi 635s can hit 1W+ and handle 1.5A current. DTR and Cyparagon deserve all the credit for testing these like crazy.

  8. #18
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    Yep, it's over here on this thread (page 2):

    http://www.photonlexicon.com/forums/...492#post207492

  9. #19
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    I finally was able to install two of these 300mW Mitsubishi 635nm red diodes in my projector. Even though the beam is a bit wider than the two LPC-815's I was running before, they appear to be at least 3-4 times brighter than the old ones. As a test I put 2.30 amps through both of them wired in parallel and was getting just under a full watt of light AFTER losses from the PBS cube - Amazingly bright!

    See attached photos...

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  10. #20
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    how much of it misses the scanners?

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