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Thread: SunLike LED inside the home, studio, streetlights...

  1. #31

    Join Date
    Jul 2013
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    Queensland, Australia
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    348

    Re: SunLike LED inside the home, studio, streetlights...

    A question for those with a greater knowledge of lighting than myself, which should prove to be most of you, has anyone ever tried the black compact fluorescent bulbs to reproduce an adequate light source for alternative printing techniques??

  2. #32
    Drew Wiley
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    Sep 2008
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    SF Bay area, CA
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    11,597

    Re: SunLike LED inside the home, studio, streetlights...

    It's been done many times.

  3. #33
    Randy Moe's Avatar
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    Dec 2011
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    9,620

    Re: SunLike LED inside the home, studio, streetlights...

    Not a good example, but Youtube often has more info than we share.

    Here's A DIY

    https://youtu.be/emFCCGlzjnQ

  4. #34

    Join Date
    Jul 2013
    Location
    Queensland, Australia
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    348

    Re: SunLike LED inside the home, studio, streetlights...

    Thanks Randy, they are more like the ones used in the softboxes, but I have never seen them used in a uv exposure box. Thought perhaps somebody may have experimented with them
    Click image for larger version. 

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  5. #35
    Drew Wiley
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    Sep 2008
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    Re: SunLike LED inside the home, studio, streetlights...

    Normally used as a bank of tubes, not screw-in bulbs.

  6. #36

    Join Date
    Sep 2004
    Location
    Chicagoland
    Posts
    468

    Re: SunLike LED inside the home, studio, streetlights...

    Quote Originally Posted by Randy Moe View Post
    Not on market yet, but soon.

    http://www.seoulsemicon.com/en/product/SunLike/

    Look at the spectrum in the datasheets.


    97 cri 5000K
    Randy,
    Yuji is using violet in their VTC series, scroll to the bottom to see where it is mentioned. I don't have enough knowledge to know if we are comparing apples with apples.
    https://www.yujiintl.com/high-cri-led-lighting

  7. #37
    Led Stadium
    Join Date
    Mar 2018
    Location
    CHINA
    Posts
    2

    Re: SunLike LED inside the home, studio, streetlights...

    Thank contact as soon as possible.

  8. #38

    Join Date
    Jun 2018
    Posts
    1

    Re: SunLike LED inside the home, studio, streetlights...

    Quote Originally Posted by chris_4622 View Post
    Randy,
    Yuji is using violet in their VTC series, scroll to the bottom to see where it is mentioned. I don't have enough knowledge to know if we are comparing apples with apples.
    https://www.yujiintl.com/high-cri-led-lighting
    Hi, lurker here also interested in "sun-like" LEDs. Came across Waveform Lighting - looks like they also have "violet" in their LEDs - anyone tried their products?

  9. #39
    Andy Eads
    Join Date
    Jul 2001
    Location
    Pasco, Washington - the dry side of the state
    Posts
    218

    Re: SunLike LED inside the home, studio, streetlights...

    Quote Originally Posted by Drew Wiley View Post
    Gary, I been using 98CRI 5000k tubes for the last 30 years. The came from Germany and cost a bundle, but have also been exceptionally reliable. Not one has burned out yet (old hold-down starters, not quickie ballasts). I installed them not only in critical applications in my lab, but at color matching stations at my ole workplace.
    Drew, I ran a small printing business catering to graphic artists and their clients. I installed the highest CRI lights as close to daylight color temp as I could get. In a very short time, they paid for themselves. An unexpected benefit was that my employees said they felt better and less fatigued by the end of the day. I would be cautious to see the CRI and spectral output of any LED before installing it for a critical application...or even my home for that matter. - Andy

  10. #40
    Drew Wiley
    Join Date
    Sep 2008
    Location
    SF Bay area, CA
    Posts
    11,597

    Re: SunLike LED inside the home, studio, streetlights...

    Yes, lighting affects mood, and our physiology is geared to real sunlight. I'm skeptical about LED's having "arrived" yet... Pasco? My uncle had a ranch near there. But he was overseas as a Peace Corps engineer most of the time in third world countries, but returned in his 90's to work the ranch and got a sunstroke - stubborn fellow; but that's what it takes to get officially inducted into Explorers Club like he was. When I was young my Dad took me out of school every Fall for long geology drives throughout the Northwest, which included that area. But I need my truck AC replaced before taking any drives up that way again.

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