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Thread: laser prices

  1. #11
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    Quote Originally Posted by mccarrot View Post
    But blocking 1/2 the beam is blocking 250mW, this is tranfered into heat. your collimator wil get hot very fast!
    ...assuming the clipping is done within the collimator, and not after using a heat-sunk aperture/iris thing.

  2. #12
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    Default beam

    well my plan was this, find a lens that gave least divergence and 6mm beam cut the beam in halfwith a mirror, then fold the rest of the beam back around on its self and knife edge the two back together again should end up with a 3mm x 4mm beam @1.2 mrad
    it might suffer a bit of loss on one of the beams but for cost it proberly my best option
    and it leave it open to do the same with a second diode and pbs cube together the two diodes

  3. #13
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    You seem to be forgetting that these diodes have two very different axis.
    The way you want to do things will result in the following:

    • Near field: - (rectangular with the horizontal side widest, or if you clip the whole thing, square/round)
    • Far field: | (with or without clipping)

  4. #14
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    Wink

    HEY! You guys are drifting a bit... Keep those comments in the lense thread. This thread if for "How are we going to get those 642 prices down?".

  5. #15
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    Quote Originally Posted by allthatwhichis View Post
    HEY! You guys are drifting a bit... Keep those comments in the lense thread. This thread if for "How are we going to get those 642 prices down?".
    Well how about some suggestions on the most economical reds and greens to accompany these blues? Other than the Opnexts, can anyone suggest some 640 single/multi mode diodes with adequate performance that would require only a couple of to combine with the Casio blue?

  6. #16
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    Mitsubishi 638nm's look interesting, but not sure what the beam profile would be like. I read somewhere they are available up to 500mw now, though not cheap

    http://japantechniche.com/2010/01/15...ishi-electric/

    http://global.mitsubishielectric.com...10/mel0772.pdf
    Last edited by m0f; 06-08-2010 at 05:59.

  7. #17
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    Default almost

    Quote Originally Posted by allthatwhichis View Post
    HEY! You guys are drifting a bit... Keep those comments in the lense thread. This thread if for "How are we going to get those 642 prices down?".
    thats not quite what i mean look again
    it was can we expect to see a price rise in the red and green's
    because manufactures blue sales have taken a knock.
    but i will settle for your suggestion
    group buy after all this blue stuff settles down

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