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Thread: my first home made dual red

  1. #1
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    Default my first home made dual red

    my first dual red made with diodes and cube from the doctor
    diodes set axisz housings set in ali blocks 3mm beamand good
    divergence i think dont know to much about that side of it dont know how to work it out but the beam spot is about 100mm at 300m and are being driven light with two die4drives at 180ma each guessing at 280mw output
    hoping pic attaches ok not done it before



    http://www.photonlexicon.com/forums/...1&d=1198781662

    http://www.photonlexicon.com/forums/...1&d=1198784421

    http://www.photonlexicon.com/forums/...1&d=1198784551
    Attached Thumbnails Attached Thumbnails DSCI0279.JPG  

    kerrys camera 015.jpg  

    Last edited by badger1666; 12-27-2007 at 10:43.

  2. #2
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    Default

    100mm spot at 300m is about .3mR - very nice! The link seems broken though

  3. #3
    Join Date
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    Central Florida
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    Thumbs up

    Nice. I see you are using the die4Drive. That top link is invalid. What are you measuring off that beast?
    Love, peace, and grease,

    allthat... aka: aaron@pangolin

  4. #4
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    Default first red

    hey andy sussed out how to upload to photonlexicon directley
    thanks for your help anyway if anyone going to uklem can bring a power meter i would like to check the output power

  5. #5
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    Default first red

    had trouble with one driver when i first powerd it up one of the transistor started glowing and smoking so i turned it off and back on and it worked ok still its a bit black but works how long for i dont know i may ask robin to change that transistor, dont know why it happened wiring was fine

  6. #6
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    Sheepsville, Wales, UK
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    Default

    Hi Badger
    Nice work - If no one else helps you out I will be bringing my lasercheck to the UK meet.
    See you there

    Rob
    If you need to ask the question 'whats so good about a laser' - you won't understand the answer.
    -----------------------------------------------------------------------------------------------
    Laserists do it by the nanometre.

    Stanwax Laser is a Corporate Member of Ilda

    Stanwax Laser main distributor of First Contact in UK - like us on Facebook http://www.facebook.com/FirstContactPolymerCleaner
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  7. #7
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    Default

    If these are the rohm diodes at 180mA each you are getting about 85-95mW each.

  8. #8
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    Default first red

    how much do you think i can crank em up to and still get maybe a 800-1000 hrs life

  9. #9
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    Default

    You might have seen my post about this, I am making a quad set up currently (waiting on the diodes). However, I will be using one Die4Driver. Since they are the same diodes they can be driven together. I talked to Robin about this and he said just to put a 2.2ohm resistor in line with each diode. And since the diodes I have are rated at ~200mA I have a bit of headroom on the driver. 800mA total, and I will probably push them to about 900-950mA.

  10. #10
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    Default another pic


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