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Not a sunlight but Mitsubishi's new synthetic-light "windows" appear to be pretty spectacular. I want one. https://www.bbc.com/news/av/technology-45827812/mits

• r00fus 8y ago
  Doesn't sound like full spectrum light. I'd live to see the CRI on those things.
  • Wistar 8y ago
    I did a little digging and, it appears that Mitsubishi and CoeLux have partnered on these artificial skylights and, although the CRI isn't listed, the CoeLux site says this: "CoeLux systems combine LED lighting that reproduces sunlight spectrum, direction and brightness with optical systems and nano-structured materials that reproduce the endless distance of the sky and sun." If it actually does reproduce the sunlight spectrum it'd have to have a very high CRI, no? Toshiba has their TRI-R LEDs claimed to be capable of 95% of the sunlight spectrum and they are rated at a CRI of Ra97. Yuji has LEDs with claimed CRI of 98, so it seems within the realm of possibility that these fake windows are very convincing.
    • nine_k 8y ago
      I have a few LED lamps with CRI 95, and they produce very natural-looking light, not noticeably different from sunlight. Not really expensive even.
• whitepoplar 8y ago
  Wow, I want one, too!