BIOS lights look amazing on the graph!



  • [Title]. They are great at 5000K and I'd like to see 7000K and the like for cloudy days. What I don't agree with is using the cyan spike in the warmer 3000K bulbs. I think that's the opposite of what would be expected and desired in a warmer light source. Do you think the spike is enough to delay sleep noticeably in the warmer lights?


  • f.lux team

    You want lights like this in the office.

    More "day signal" per watt.



  • @herf Cool, so the warmer lights would just be for color preference maybe? They'd still keep you alert?

    It would be cool if they would combine all four and transition them for a sunset so it gives workers a chance to wind down before they leave, especially in the later fall and winter months. Summer, this wouldn't be very useful I guess.



  • Yeah, the intent is to provide as much melanopic flux for any given color temperature. Trends are going towards 3000K and 3500K in the office (especially now with the AMA report on street lighting), and that could make it hard to biologically delineate the difference between daytime lighting and nighttime lighting. If you're going to put 3000K in your office for daytime use, you might as well try to get as much melanopsin stimulation as you can.



  • @rsoler Wow, I thought the trend would be higher color temperatures. Shit. I understand the want for lower colors, but why not swap back to those in the later hours, and keep bright white during the day? I've thought that would be the best way to go. Most fixtures have 3-4 lights, so have 2 for daytime and one, or the remaining for warm white, without as much cyan or blue spike.


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