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There are plenty of high-CRI LEDs available at reasonable prices. Bridgelux [0] and Yuji [1] are a couple of examples off the top of my head. So I don't believ

by Youden 4y ago

There are plenty of high-CRI LEDs available at reasonable prices. Bridgelux [0] and Yuji [1] are a couple of examples off the top of my head. So I don't believe it's the LEDs that are the problem. And yes, by modern standards they can suck some juice but even a large ARRI Skypanel only draws 1500W [2], which is similar to a small air conditioner. [0]: https://www.bridgelux.com/ https://www.bridgelux.com/ [1]: https://www.yujiintl.com/ https://www.yujiintl.com/ [2]: https://www.arri.com/en/lighting/led/skypanel/s360-c#F0.00S360C https://www.arri.com/en/lighting/led/skypanel/s360-c#F0.00S3...

MengerSponge 4y ago
I added some Sunlike LED bulbs (the GE "sun filled" brand) to my office a few months ago. They aren't expensive, and they are nowhere near as bright as true daylight, but they do the trick. Sunlike LED elements are available in different formats around the world: http://www.seoulsemicon.com/en/technology/sunlike/casestudy/ http://www.seoulsemicon.com/en/technology/sunlike/casestudy/
onion2k 4y ago
And yes, by modern standards they can suck some juice but even a large ARRI Skypanel only draws 1500W [2], which is similar to a small air conditioner. Why would you compare it to an air conditioner though? Those aren't equivalents. You need to compare it to an alternative light source. A bright LED bulb uses about 13W. You could have 10 of them and still be using less than 1/10 of the energy...
- klodolph 4y ago
  The reason you'd compare it to a small air conditioner is because it's an amount of power that you can get from a branch circuit at home. Normal indoor LED lighting is almost a rounding error on your electricity bill these days. Daylight simulation uses much more power.
  - thrashh 4y ago
    But why would you compare when the goal is not to maximize your power usage before tripping a breaker. It is to get light.
    - klodolph 4y ago
      Yes, the goal is to get light. And since these lights only use 1500W, you can plug them into an ordinary house electrical outlet in the US.
      - onion2k 4y ago
        Yes, the goal is to get light. Therefore a valid comparison is to measure it against other sources of light, and not air conditioners. But anyway, saying it's "only" 1500W is incredibly odd. If your goal is just to "get light" then using 115* more energy than a 13W LED bulb is completely stupid. I understand that you might want more light than one bulb gives you, but even scaling up to 10 bulbs you're still a huge margin away from a Skypanel. If you're running an art gallery or a showroom where the quality, color, and coherence of the light makes a difference then it makes some sense. If you're at home and you just want 'some light' then it's utterly ridiculous to use that much energy.
        klodolph 4y ago
        > Therefore a valid comparison is to measure it against other sources of light, and not air conditioners. I would definitely say that this is a false statement. > If your goal is just to "get light" then using 115* more energy than a 13W LED bulb is completely stupid. The goal is to get artificial sunlight. A 13W LED bulb doesn't do that. An air conditioner doesn't do that either. However, it's nice to know how much power these lights use, so we compare them to other devices which use a similar amount of power. Air conditioners and space heaters use a similar amount of power. > If you're running an art gallery or a showroom where the quality, color, and coherence of the light makes a difference then it makes some sense. I don't think a SkyPanel makes sense in those applications. If you are just running an art gallery or showroom, get some ordinary high-quality lighting.
- HeyImAlex 4y ago
  The skypanel is really really bright. The link says the 360 gets 80 lumens per watt, which is right around what LED bulbs get.
- joe-collins 4y ago
  Typical LED lighting is approximately free, or close enough to zero that calculating a percentage change in cost isn't especially, ah, enlightening. The goal of the comparison is to attempt to contextualize the absolute rather than relative cost, relying on the monthly cost of air conditioning (approximately "a lot", or at least noticeable) being a more familiar value than the monthly cost of 100 light bulbs (which are individually so cheap as to vanish into noise).
modeless 4y ago
If you're running 1500 watts in your office all day long you'll probably need a small air conditioner too!
- baq 4y ago
  not so small in the summer, too

by Youden 4y ago

MengerSponge 4y ago

I added some Sunlike LED bulbs (the GE "sun filled" brand) to my office a few months ago. They aren't expensive, and they are nowhere near as bright as true daylight, but they do the trick. Sunlike LED elements are available in different formats around the world: http://www.seoulsemicon.com/en/technology/sunlike/casestudy/ http://www.seoulsemicon.com/en/technology/sunlike/casestudy/

onion2k 4y ago

And yes, by modern standards they can suck some juice but even a large ARRI Skypanel only draws 1500W [2], which is similar to a small air conditioner. Why would you compare it to an air conditioner though? Those aren't equivalents. You need to compare it to an alternative light source. A bright LED bulb uses about 13W. You could have 10 of them and still be using less than 1/10 of the energy...

klodolph 4y ago
The reason you'd compare it to a small air conditioner is because it's an amount of power that you can get from a branch circuit at home. Normal indoor LED lighting is almost a rounding error on your electricity bill these days. Daylight simulation uses much more power.
- thrashh 4y ago
  But why would you compare when the goal is not to maximize your power usage before tripping a breaker. It is to get light.
  - klodolph 4y ago
    Yes, the goal is to get light. And since these lights only use 1500W, you can plug them into an ordinary house electrical outlet in the US.
    - onion2k 4y ago
      Yes, the goal is to get light. Therefore a valid comparison is to measure it against other sources of light, and not air conditioners. But anyway, saying it's "only" 1500W is incredibly odd. If your goal is just to "get light" then using 115* more energy than a 13W LED bulb is completely stupid. I understand that you might want more light than one bulb gives you, but even scaling up to 10 bulbs you're still a huge margin away from a Skypanel. If you're running an art gallery or a showroom where the quality, color, and coherence of the light makes a difference then it makes some sense. If you're at home and you just want 'some light' then it's utterly ridiculous to use that much energy.
      - klodolph 4y ago
        > Therefore a valid comparison is to measure it against other sources of light, and not air conditioners. I would definitely say that this is a false statement. > If your goal is just to "get light" then using 115* more energy than a 13W LED bulb is completely stupid. The goal is to get artificial sunlight. A 13W LED bulb doesn't do that. An air conditioner doesn't do that either. However, it's nice to know how much power these lights use, so we compare them to other devices which use a similar amount of power. Air conditioners and space heaters use a similar amount of power. > If you're running an art gallery or a showroom where the quality, color, and coherence of the light makes a difference then it makes some sense. I don't think a SkyPanel makes sense in those applications. If you are just running an art gallery or showroom, get some ordinary high-quality lighting.
HeyImAlex 4y ago
The skypanel is really really bright. The link says the 360 gets 80 lumens per watt, which is right around what LED bulbs get.
joe-collins 4y ago
Typical LED lighting is approximately free, or close enough to zero that calculating a percentage change in cost isn't especially, ah, enlightening. The goal of the comparison is to attempt to contextualize the absolute rather than relative cost, relying on the monthly cost of air conditioning (approximately "a lot", or at least noticeable) being a more familiar value than the monthly cost of 100 light bulbs (which are individually so cheap as to vanish into noise).

modeless 4y ago

If you're running 1500 watts in your office all day long you'll probably need a small air conditioner too!

baq 4y ago
not so small in the summer, too