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Thread: 140 mW 640 nm

  1. #1
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
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    Default 140 mW 640 nm

    Has anybody got their gready little hands on mitsubishies 140 mW 640 nm diodes yet?

    Steve

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    Optnext. I believe Mr. P1t8ull had a couple of samples of the optnexts.
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    I have bought 5 Mitsubishi ML520G51 diodes 150 mW 636 nm diodes, Steve.
    (Very expensive) :/

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    I have a couple of Opnext HL6385DG's (150mw/642nm) sitting here, haven't had a chance to plug them in yet. With 9/17 degs of divergence they should be a lot easier to tame than the equivalent Mitsi ML520G51's 7/40 degs.
    Even with that spread, it sounds like steve-o has managed to get a usable beam from them with some persistence though.

    I'll try and get one of the HL6385DG's running for the UKLEM in August

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    are they the same that are inside these ?

    http://www.medialas.de/showlaser/redlaser_e.htm

    the divergence looks ok and the beam less than 3.5mm

    but it seems its only a single diode @ 400mW

    if its not the same ... anyone know what they are


    all the best .... Karl

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    Even with that spread, it sounds like steve-o has managed to get a usable beam from them with some persistence though.
    Yes, I have tamed them down, but I dont know how much power I've lost..
    _____________________________________
    RE:Medialase
    This was in the tech specs:

    Adjustment
    The laser optics comes preadjusted from factory. If, for any reason, you experience two dots
    or double beam after distance, the optical mount needs to be slightly readjusted. This can be
    done externally without opening the unit. For this adjustment, two hex wrench keys are necessary

    Might indicate 2 diodes are used in the units. Wonder how much they ask for them. You have to fill out a personal info page to get a pricelist... :\
    Last edited by steve-o; 07-02-2008 at 07:39.

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    ahhhhh ... thanks steve ... i missed that

    seeing that medialas do a 350 and 400 version ... it may be 2 Mitsu diodes pushed to their max..

    just looked at the tech info ...... it says that 0v the output is off ... and at 4v output is on which implies that its TTL but the main page does
    state its analogue modulation or it might mean that full brightness is achieved at 4v ?

    all the best ... Karl
    Last edited by Banthai; 07-02-2008 at 09:14.

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    Yeah, Karl, I noticed they say analogue mod. too, I didnt see the 4 volts though...that's is strange. I also didnt look for or see a MTTF figure... hmmm..

    OK,
    I just re-checked and-

    Operating hours
    (at 10 h / day) Typ. > 5.000 h

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    They are 1090 euros for the 400mw, i was looking into buying one

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    cheers Andy ....

    thats quite a price ..... but they are quite comprehensive and are tec cooled .... so im guessing its a bit more than just a couple of diodes also if medialas are buying them in, everyone has to make their margin and you will get a decent warranty etc ...

    but still a bit pricey for me

    all the best .. Karl

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