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- เผยแพร่เมื่อ 25 เม.ย. 2021
- I have been asked in several comments about printer settings for the diffuser in the Nanoleaf replica project. In this video I attempt an experiment to show how different filaments types and diffuser thickness' can affect the amount of light diffusion and transmission. You can use the same experiment to determine the right settings and design for your projects.
Diffuser Test Printable Files:
www.thingiverse.com/thing:483...
Prusa Printers:
www.prusaprinters.org/prints/... - วิทยาศาสตร์และเทคโนโลยี
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man i searched for “3d printing led diffuser” and yours is the first video that has a great breakdown of experiments. thank you!
Great video and thank you for providing files to try for ourselves!
Great video! Exactly what I was looking for.
you're a lifesaver! thank you
You're welcome!
Add "No. Of LEDs/length" as a parameter (like 60 LEDs/m, 144 LEDs/m). This might help with better light distribution. Good experiment btw :)
A really interesting experiment / test. I had the same challenge when I was designing my 3D printed multi-segment LED displays.
In my case, I’m just using a white PLA (with some translucency), for the diffuser.
My solution, for obtaining a relatively even visual diffusing effect, was to have a 0.4mm raised and chamfered circular area (on the diffuser) directly above each LED. This provided a way to reduce the directly viewed LED brightness, whilst providing relatively less opacity in the spaces between the LEDs (for a visually even spread of lighting). To work as intended the diffuser is placed relatively close (in my case around 5mm) above the LEDs, with the diffuser 1.2mm thick and the circular chamfered areas raising the thickness above each LED to 1.6mm.
Depending on your LED's & filament, your diffuser & raised area thicknesses will need adjustment. But perhaps this gives you another option to explore. :-)
I was thinking about the same thing when watching the video. Why 1.2mm thick though? In his video, it seemed .3-.4mm would've been a good lens thickness with the rest being 0.2mm. Were you using brighter than avg led strip?
@@Jaze2022 It was a long time ago, but I was using WS2812B 5050 RGB SMD LED's on my own PCB design. The thicknesses I arrived at would have been related to the opacity of the particular white filament I was using, in order to achieve the appropriate diffusion effect / brightness that I wanted. It was more the approach that I had taken, which I thought others might have found useful, as opposed to the specific measurements I used (although the ratios might provide some starting point for experimentation).
Would it be possible to combine the transparent and white filament and make a fresnel/diffusion lens before using the white diffuser?
Thank you
Have you sanded the surface of nanoleaf diffuser?
I experimented with arround 10 different white pla/petg plastics until i got the right one for a led matrix lamp (like the one you did from Ikea) what i didn’t try was using 2 layers with an air gap. Probably when using a tiny layer right on top of the led strip, than an air gap and than the outer diffuser it may be possible to get the smallest spacing while still getting the brightest homegenetic light (no hotspots). Just a thought though….
Hmmm like that idea, so say like for my IKEA lamp LED core then have a cylinder (vase mode) quite close to LEDs and then a second cylinder about 5mm away?
@@smartroadbiker I'm also considering this approach, with a twist. To use your example, a cylinder with one or more LEDs at its axis could be printed as a solid object using concentric infill to create several, spaced-apart, walls of one wall thickness each. The diffusion could be increased by increasing the infill %, which adds more concentric walls and automatically maintains even spacing between them.
I know it depends on application and thickness available, but wouldn't you achieve a better effect if instead of pointing the LEDs towards the diffuser you position them so that they point at 90 degrees either down or up? you could use a white filament to produce the holder bracket or even lay it with an aluminum foil to even out the light spread. I think the effect could be much better using smaller LEDs this way on their full power with thinner diffusers.
I wonder what would happen is you printed a pyramid diffuser. So that the point of the pyramid is on top of the led. This way the most direct light has the most material to go through and the sides further away from the led would have less material and more diffuse. Just a random thought I had watching this video :)
Nice. But you should change your design. Not thicker, but with some kind of light guiding filaments from the actual LED spots to the gaps between that LEDs. On top of that a diffused/rough sanded diffuser. The light "rails" will take maybe 40% of the light to the gap areas and let the other portions light through.
What I find great for my project is to make black suroundings around led. and then on top I put, very thin, print of white. That way each LED is declarer a lot and there is no fusion of light.
I don't understand what you are saying here. Can you try and re-phrase it? Sounds interesting but I can't figure out what you're describing here.
Good job Brother. Can i talk to you via Whatsapp or any way?