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  1. #1
    Mainecoonmaniac's Avatar
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    LED rope light for possible darkroom applicaton

    I found a cool vendor that sells LED rope lights. They come in various colors and lengths. I'm thinking of using the orange or red one rope lights in my darkroom as safelights. I'm wondering if you could coil them inside an enlarger head as a light source?

    Here's the link:
    http://www.orangetreetrade.com/shop/

  2. #2
    dehk's Avatar
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    Are they safe for safe light? I highly doubt that.
    But more interestingly, why do you want to coil them instead an enlarger head?
    - Derek
    [ Insert meaningless camera listing here ]

  3. #3
    Wade D's Avatar
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    I can't find the thread but read somewhere not too long ago that someone was using amber Christmas light strings. They claimed that the strings were safe for modern papers. Cheap too.

  4. #4
    BetterSense's Avatar
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    The red ones are probably safe for a safelight.

    I don't think coiling them inside the enlarger will work.
    f/22 and be there.

  5. #5

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    If they're LEDs they should be fine. the little bulbs in the colored glass may be a different story, though. iirc, LEDs will only give off a certain frequency of light, nothing more. the glass bulb ones are probably just regular bulbs, as in not safelights, with tinted glass over it. Unlike safelights, you don't really know how much light it filters out and at what wavelengths. it really wouldn't be much trouble to test them, though.

  6. #6
    pcyco's Avatar
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    hallo

    i use a 1watt philips ledlightbukb, in red, as safelight.
    tested for 32 minutes -> absolut nothing with kentmere vc and some other papers (mcc etc)

    at the weekend i can look for the exact name.

    analog greetings

    thomas
    --------------------------------------------------
    vfdkv (259)

  7. #7
    jp498's Avatar
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    A common paper like Ilford MG RC Warmtone cuts off hard at 550nm

    http://www.ilfordphoto.com/download....0207232634.pdf

    The red led rope light here has a 630nm peak.

    http://en.wikipedia.org/wiki/File:Re...ED_spectra.png

    shows a spectrum graph of three LEDs including a red one, pretty sharp output that should not pose a problem. I think it's a matter of either testing like Thomas has done or comparing spectrum graphs before purchasing.

    http://www.orangetreetrade.com/shop/...nch-p-666.html

  8. #8
    Mainecoonmaniac's Avatar
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    Thanks for the information

    Hi Thomas,

    Thanks for the information. I find it useful. I went through a couple of safelights already. They were old fashioned technology of incandescent bulbs and sodium vapor. I got very old Thomas Duplex that safelight that is near the end of it's life. I think the new LED technology is more energy efficient and quieter. My Thomas Duplex hums when it's on. I'll buy some orange rope lights for my darkroom soon.

    Best,
    Don

  9. #9
    holmburgers's Avatar
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    Safe light - probably, enlarger light - heck no. These rope lights get quite warm, and I think if you coiled them in an enlarger not only would the light be of terrible quality, it would probably melt itself into a huge gooey mess.

  10. #10
    pcyco's Avatar
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    hallo

    there are allways possibilitys if you want


    i will try something like this.

    there are also grower-lights with leds, i think they "must" emit uv-light

    now im going home from the office an have a beer at home

    thomas
    --------------------------------------------------
    vfdkv (259)

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