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Thread: how much brighter is 473 over 457 or 405?

  1. #1
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    Default how much brighter is 473 over 457 or 405?

    1 lets say 180mw of 405 = roughly what in 473?

    1watt 457 = roughly what in 473?

    i know its subjective im just looking for a rough estimate.



    2 also some green lasers are wired to red ilda why is this?


    3 differential advantages/disadvantages over single ended
    especially thru about 40m of ilda cable linked to 3 lasers using splitters or ilda passthru on the projectors.

  2. #2
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    1. Use chroma and look at luminosity values
    2. Ilda standard states that monochrome lasers should be wired to the red input
    3. Differential receivers are a great way to eliminate noise picked up trough your cables ...

  3. #3
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    Quote Originally Posted by FourDee View Post
    2. Ilda standard states that monochrome lasers should be wired to the red input
    I've mine wired to the intensity output.

  4. #4
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    Quote Originally Posted by FourDee View Post
    2. Ilda standard states that monochrome lasers should be wired to the red input
    I don't think this originates from ILDA. At least, I don't think it's discussed in the ISP doc. I suspect some projectors are wired like this so that they will still work with software and/or DAC that only implements RGB output (no intensity).

    Quote Originally Posted by jeejeedr View Post
    I've mine wired to the intensity output.
    Yeah, if you're using reasonable software and a DAC that implements intensity output, I think it makes sense to connect your monochrome projector intensity to... uh... intensity.

  5. #5
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    In the Laser Faq
    Laser Visibility and Color
    http://www.repairfaq.org/sam/laserioi.htm#ioilvs



    --john

  6. #6
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    Quote Originally Posted by jeejeedr View Post
    I've mine wired to the intensity output.
    The problem I have seen when wiring the laser to the intensity output is you cannot control the brightness of the laser and it will be full power when on.

    I have tested this with my QM.net and livepro.

    Now I have connected my green to the green instead of intensity and made a green color pallet for it and I have brightness control with livepro.

  7. #7
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    Quote Originally Posted by mccarrot View Post
    The problem I have seen when wiring the laser to the intensity output is you cannot control the brightness of the laser and it will be full power when on.

    I have tested this with my QM.net and livepro.

    Now I have connected my green to the green instead of intensity and made a green color pallet for it and I have brightness control with livepro.
    It sounds like Pangolin uses the intensity signal as some LASER on/off signal, instead of for intensity modulation. I connected my modulation to the intensity signal and got full depth of modulation with both HE-Laserscan and the Zoof software. Unfortunately the ILDA standard is not perfectly clear on this point, so I guess everybody has to do what works with their software.

  8. #8
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    Quote Originally Posted by mccarrot View Post
    The problem I have seen when wiring the laser to the intensity output is you cannot control the brightness of the laser and it will be full power when on.

    I have tested this with my QM.net and livepro.

    Now I have connected my green to the green instead of intensity and made a green color pallet for it and I have brightness control with livepro.
    I do not know how mamba does it. My laser is TTL (100mw). I'll know what mamba does in 1 week as I just bought a new toy a minute ago (1W cni).

  9. #9
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    If I remember well the easy-lase does have analog intensity control with Mamba

  10. #10
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    Quote Originally Posted by Speculative Lasers - Dan View Post
    1 lets say 180mw of 405 = roughly what in 473?

    1watt 457 = roughly what in 473?

    i know its subjective im just looking for a rough estimate.

    .
    1W 405 nm = 3.18 lm
    1W 445 nm = 28.95 lm
    1W 457 nm = 37.44 lm
    1W 473nm = 70.77 lm

    according to the nice Chroma program

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