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Riding the coattails of your comment to ask the hive mind: any reason I shouldn't try to build the simpler version from the tutorial using a more powerful (100W
by monktastic1 6y ago
Riding the coattails of your comment to ask the hive mind: any reason I shouldn't try to build the simpler version from the tutorial using a more powerful (100W) LED from Amazon?
https://www.amazon.com/dp/B07T8RDF8F https://www.amazon.com/dp/B07T8RDF8F
Might not be as awesome as a $60k CoeLux, but for 1000x less cost, maybe it's worth a shot?
(Edit: come to think of it, with an 8x10 fresnel lens, it might be way too bright for the size.)
- jtanderson 6y agoYou'd still have to deal with the glare and chromatic aberration from the mirror sheets. Also the area covered would still be confined to the size of one sheet and you'd have to make a "bank" of them to cover any reasonably large area.
- db48x 6y agoDon't forget that the volume of the device has a cost too. The video shows the construction of a really really nice, but takes up the whole hallway outside that room. Most of the time you'd probably prefer to use your hallway for walking in. On the other hand, maybe your house has an attic above one of your rooms that; there will be a lot less opportunity cost to using up that volume.
- jankotek 6y agoIt is much easier to take broken lcd screen and remove diffuser. https://m.youtube.com/watch?v=8JrqH2oOTK4 https://m.youtube.com/watch?v=8JrqH2oOTK4
- numpad0 6y agoThat’s the same guy as this article link. This one is supposed to be an improvement over that.
- ecef9-8c0f-4374 6y agothe point of the parabolic reflector/fresnel versions are the parallel rays
- ecef9-8c0f-4374 6y agomaybe I should look at things first before commenting ..
- Animats 6y agoUse Fresnel lenses with a shorter focal length and reduce the depth. It would be useful to start with a standard home-type window from, say, Home Depot, and build a unit about 120mm deep using multiple shorter focal length Fresnel lenses.[1] Then, in a basement or windowless room, mount some of these into a wall. Add curtains. Nice if your home office or workshop is in a basement. This has commercial applications. Houses have few windowless rooms, but commercial structures have many. [1] https://www.alibaba.com/product-detail/Fresnel-lens-plastic-fresnel-lens-magnifier_1779572983.html https://www.alibaba.com/product-detail/Fresnel-lens-plastic-...
- Acinyx 6y agolenses cause chromatic abberations though, the red/yellow halo around the beam you see in his cheaper version at the end.
- faceplanted 6y agoI have a chromatic film on my actual windows because I like the effect so there's technically a market for it , especially if it makes it cheaper and smaller
- kristiandupont 6y agoI am really curious about this -- do you have it just for the effect? What does it look like?
- DanBC 6y agoDIY Perks has previously shown how to do that, and it looked pretty good. Turning Smashed TVs into realistic daylight panels: https://www.youtube.com/watch?v=8JrqH2oOTK4 https://www.youtube.com/watch?v=8JrqH2oOTK4
- EricE 6y agoKeep watching the video - he builds Fresnel lens versions at the end of the video. The satellite dish is more dramatic so I don't blame him for leading with it :)
- imhoguy 6y agoI would advise to use some brass chassis for hot elements as fire accident may be more costly.