Now I want to make a fake window for my bathroom, what have you done OP? Just when I finished my DIY window-fitted planter.
Someone should probably start a bright home lighting company (2019)
21–30 of 294 posts
Re: Someone should probably start a bright home lighting company (2019)
#22There are many aquarium lighting companies that make these types of fixtures, because this intensity of lighting is exactly what people want to (and do) simulate over their aquariums (though generally at spectrums that are bluer than daylight)! I think in terms of cost what the OP is not realizing is that when you are talking about hundreds of watts of LEDs, that is a lot of heat that is very concentrated . It takes…
Dont forget you also cannot read you monitor/laptop anymore.
Re: Someone should probably start a bright home lighting company (2019)
#23I think bright room lighting is a very promising avenue for SAD and circadian rhythm issues.
Last year, for my house plants, I suspended a pair of 100w full spectrum grow lights in my living room. Throughout the winter I've been using my kitchen table as a workspace and I swear this is the first time in my life that I've completely avoided SAD and my circadian rhythm has been sufficiently advanced that I'm now a morning person. In my configuration the lights are suspended behind me, the glare from having them in direct eyesight is problematic.
Has been absolutely wonderful and can definitely recommend giving it a try, the "quantum board" full spectrum lamps are getting really affordable.
Re: Someone should probably start a bright home lighting company (2019)
#24It’s not that crazy of an idea especially in winter when SAD is worst and any extra power you waste in your house heats it so it isn’t really wasted. One of my favorite places on earth is my marijuana grow and the incredible amount of beautiful light they grow under. I’ve contemplated a scaled down version in my house. I could grow plants all over the place under the lighting like being outside, no matter what the se…
SAD, as in being “very sad”?
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Re: Someone should probably start a bright home lighting company (2019)
#25I've installed eight of these[1] CRI 98+, 5000K, 752 lm strips for a total of ~6000 lm, and during the day I use them in addition to about 3000 lm from two light bulbs, one of which is a nice CRI 90 2700K. I'm very happy with the quality of the light from the strips, though I probably should've gone for a few more. Another pair directly over the computer desk would be nice.
I generally find them uncomfortable when night starts to fall, at which point I just leave the dimmer yellow lights on.
[1] https://www.ledrise.eu/led-strips-modules/led-strips/multiba...
Re: Someone should probably start a bright home lighting company (2019)
#26This is pitched as (1) a treatment for SAD and (2) something people would like. And that's great, but I want to consider something else -- one of the best theories of civilization-caused myopia is that it's caused by insufficient exposure to sunlight. And the table in the post is certainly circumstantial evidence supporting that theory: > Direct sunlight shines 100k lux > Full daylight (indirect) is more than 10k lux…
There seems to have been a fair amount of research into this based on the COVID lockdowns around the world. One such study:
https://pubmed.ncbi.nlm.nih.gov/33443542/
Re: Someone should probably start a bright home lighting company (2019)
#27I wish they'd talked about running costs as well as the price of parts in the 'costs' section. It's the electricity bill that puts me off. Unless it can be... solar powered?
Re: Someone should probably start a bright home lighting company (2019)
#28Having grown up in Korea and lived in America, Canada, and the UK, one thing I consistently noticed about all those Western homes is how dark they are.
Most homes where I come from have a large, flat lamp in the center of the ceiling of each room that evenly illuminates the entire room. Large spaces may have more than one such lamp. In the past, this was accomplished with a bunch of fluorescent tubes arranged to look like a single large lamp. These days, it's all LED. People also put lamps on the bedside table, above the dining table, and other places they want to accentuate, but it's always in addition to, not instead of, the large ceiling lamp.
Most of the American/Western homes I've been to don't have a single bright light in the living room or any bedroom, relying more often on several low-temperature lamps scattered around the space. It looks really nice, it's perfect for watching movies, and it may have been more energy-efficient in the past. But it's just so damn dark, especially if the room doesn't face the sun.
Re: Someone should probably start a bright home lighting company (2019)
#29I made some notes about this in 02013 https://dercuano.github.io/notes/10klux-led.html and 02017 https://dercuano.github.io/notes/illumination-cost.html which may be of interest to anyone trying this, but Eliezer and Raemon tried the experiment and published their notes before I published Dercuano in 02019.
Why put leading zeroes in years?
To feel special and prompt people to ask about their funny hat
Re: Someone should probably start a bright home lighting company (2019)
#30One thing they are missing is collimation. You might want the light rays to be parallel, to simulate the far away sun and to get sharp shadows. I tried to come up with a solution to do this in a flat package, but optics is not my strong suit.
Generally, you always have a trade-off here: If you want to get rid of the harsh point-like light sources, you have to add a diffuser, and then you get indirect light. But too diffused, and you get the feeling of sitting in a studio or in a bright cave. I think having a window or a skylight with parallel, non-diffused light and letting the reflections on the walls diffuse it is probably the most natural-looking solution.