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Thread: Who has 445 diodes for sale?

  1. #1
    Join Date
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    Default Who has 445 diodes for sale?

    Looking for 2. (The 1W, not the 500mW) Preferably from an A-140/150. Thx!

  2. #2
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    Nottingham, UK
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    Default

    If he still has them available:
    2x A130's... http://www.photonlexicon.com/forums/...856#post185856
    - There is no such word as "can't" -
    - 60% of the time it works every time -

  3. #3
    Join Date
    Sep 2008
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    I've got too many (A-140) on hand. I'm going to have to run a sale

    $50 each with first class shipping. If you want/need priority or express, it will cost more. I'm in So. California - US (91744)

    Peace,
    dave

  4. #4
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    Default

    PM sent..
    Thx you-all.

  5. #5
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    Knutsford, UK
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    Default

    PM sent if you still have any spare.

  6. #6
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    Sep 2008
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    Default

    Quote Originally Posted by dilbert View Post
    PM sent if you still have any spare.
    I have plenty on hand

    Peace,
    dave

  7. #7
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    Question

    Does anybody know where to find the O-like glass ashperic lenses (405-G-1 or G-2) that are the popular choice to use for collimating the beam from these 445 diodes?
    Thx

  8. #8
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    Sep 2008
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    The O-Like (and AixiZ) are NOT the same as the G-1 or G-2 lenses. The G lenses give more output, but leave the beam more elongated. O-Like and Aixiz are available from several sources (including O-Like and AixiZ )

    The O-Like and AixiZ run <$10. I have a few of these on hand @ $10.

    The G lenses are more like $50. Pop me a PM if you are interested in the G lenses. I do not carry them, but the source that I know of is not active in this forum.

    AixiZ at 30 feet
    Click image for larger version. 

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    405-G-1 lens at 30 feet
    Click image for larger version. 

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    Peace,
    dave

  9. #9
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    Default

    Thanks for the info, Dave. How much loss are we talking here? (The difference between the two)

  10. #10
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    Sep 2008
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    Here is a representative comparison (Thanks Jayrob)

    * 445nm diode
    * 640mA's
    * passive cooling heat sink
    * 405-G-1 glass lens - 608mA's
    * AixiZ 405 glass lens - 530mW's

    Be warned about the O-Like/AixiZ lenses. There are at least two different "models" floating around. One gives a more "brownish" reflection from the AR coating than the other. These "more brown" ones have about a 4% higher loss than the more "yellowish" ones. Your loss may be a bit more than this example if you get one of the more brownish ones. It is very difficult to discern this color difference, visually, unless you have them side-by-side

    Also, we have sometimes received lenses that were supposedly "broad spectrum" AR coated that actually showed a blue tinted reflection from the AR coating! I did not make the effort to quantify the additional loss with these. Once I saw that they were giving less output, I simply had them replaced. Of course that was after overcoming their argument that their "engineers" assured them that they were coated for 445nm

    Another "interesting" tidbit I had to deal with for one of them. [ First know that the O-Like/AixiZ lenses are a triple-element lens as opposed to the single (aspheric) lens design of the G type lens.] The "interesting" thing about one of the lenses I've had was that the middle lens was reflecting blueish while the two outside lenses were reflecting brownish

    Peace,
    dave

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