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3D-printable mirror array capable of reflecting light into arbitrary patterns

  • 1056 points
  • β€’ 9 days ago

  • @agmm
  • Created a post

3D-printable mirror array capable of reflecting light into arbitrary patterns


@xmonkee β€’ 9 days

Replying to @agmm πŸŽ™

This is so adorable

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@nazgul17 β€’ 9 days

Replying to @agmm πŸŽ™

Fantastic! I love the creativity that went into this.

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@zw123456 β€’ 9 days

Replying to @agmm πŸŽ™

Archimedes would be proud! And you should be too!

Congrats, and thank you so much for sharing this, it totally made my day.

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@bmsleight_ β€’ 9 days

Replying to @agmm πŸŽ™

Wow how wonderfully geeky romantic. Did he say yes ? [Edit the sand said yes!]

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@matteosb β€’ 9 days

Replying to @agmm πŸŽ™

This reminds me of company called Leva.

Check out this project https://www.leva.io/projects/kinetic-wall

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@tarikozket β€’ 9 days

Replying to @agmm πŸŽ™

hats off

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@jhgb β€’ 9 days

Replying to @agmm πŸŽ™

I'm wondering if a similar effect couldn't be done using a continuous surface and just silvering it. I saw something similar done with refraction but can't remember the URL now. 3D printers definitely have higher resolution than mirrors of this size.

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@jcmontx β€’ 9 days

Replying to @agmm πŸŽ™

Cool af! Congrats

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@blunte β€’ 8 days

Replying to @agmm πŸŽ™

Nice. Now step 2: individually articulated mirrors :)

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@colinmegill β€’ 9 days

Replying to @agmm πŸŽ™

Congrats! Wonderful!

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@jstanley β€’ 9 days

Replying to @agmm πŸŽ™

Excellent. I wonder how practical it would be to put each mirror on a servo so that you can change the image in real time?

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@wopsahl β€’ 9 days

Replying to @agmm πŸŽ™

Has anyone seen the mirror array that was built with ~2"X2"stainless steel mirrors that are attached to a sheet of blue spring steel that was laser cut as a compliant mechanism for each mirror so when an offset wheel on a threaded bolt behind the mirror is turned it progressively tilts the mirror from a minimal angle to a maximum angle? Each bolt was then driven using a single stepper motor(one mirror adjustment motor for the whole array, kind of a budget build, instead of one motor per mirror)on a belt driven x-y frame. The mirror array was positioned horizontally 2' off the floor of a museum with works of art, a camera is then pointed at an angle near eyelevel probably 20' away from the array. Then you choose an art work and the mirrors are rotated through their angles and when that pixel(mirror) reflects the color back to the camera that matches the art work you chose it stops moves to the next mirror and then repeats until there is a full image made of reflected light. Obviously the final image is pixelated but roughly resembles the original work. I saw this years ago and can no longer find any of it online. I've tried every search combination I could think of. Some of these details might be wrong but I'm just going off memory here. Pls help

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@nikkinana β€’ 9 days

Replying to @agmm πŸŽ™

That's sweet except he's a faggot.

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@dcroley β€’ 9 days

Replying to @agmm πŸŽ™

This idea looks like something you could commercialize!

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@_Microft β€’ 9 days

Replying to @agmm πŸŽ™

I might be getting old but this is the sort of magic by technology I would like to see more of in the world instead of using tech to try putting people into fake worlds in some metaverse.

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@ape4 β€’ 9 days

Replying to @agmm πŸŽ™

The wedding is going to be over the top

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@CTDOCodebases β€’ 9 days

Replying to @agmm πŸŽ™

Such a cool idea. Now you have a momento to remember the day that can be hung on a wall.

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@mrfusion β€’ 9 days

Replying to @agmm πŸŽ™

I was going to suggest you could use it as a home decoration to make a message everyday but it would only work one day a year?

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@totetsu β€’ 9 days

Replying to @agmm πŸŽ™

Now how could we achieve the same thing with just origami? https://jwst.nasa.gov/content/features/origami.html

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@tomaskafka β€’ 8 days

Replying to @agmm πŸŽ™

At a risk of spoiling a startup idea, I'd love a set of motorized mirrors I could put on a roof of a house on the other side of the street from me, that would send sunlight to the eastern side of my flat during the afternoon :).

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@YXNjaGVyZWdlbgo β€’ 9 days

Replying to @agmm πŸŽ™

I would love an array of them in the style of old airport signages could be an amazing effect. Great work.

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@diplodocusaur β€’ 9 days

Replying to @agmm πŸŽ™

There is an artist (at least) that uses arrays of motorized parts to create a similar effect https://www.youtube.com/watch?v=kV8v2GKC8WA mesmerizing

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@thanatos519 β€’ 9 days

Replying to @agmm πŸŽ™

Awesome! It's like a giant static DLP chip!

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@Turing_Machine β€’ 9 days

Replying to @agmm πŸŽ™

Very cool.

In a less-artistic application, you could use this idea to print multiple sections that could be assembled to make a large pseudo-parabolic mirror for a solar concentrator. You wouldn't get telescope-quality imaging, certainly, but if all you needed was to concentrate a lot of light on a small space (for a steam generator, say) it should work fine.

Congrats on the upcoming wedding!

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@quickthrower2 β€’ 9 days

Replying to @agmm πŸŽ™

This made my day! Nothing technical to say sorry!

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@fgblanch β€’ 9 days

Replying to @agmm πŸŽ™

This project is soooo amazing! Congrats! Great piece of art and engineering

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@intrasight β€’ 9 days

Replying to @agmm πŸŽ™

I wonder if rather than "additive" you could do similar with "subtractive" fabrication. Take a wooden board and cnc mill and cut circles on the surface at the appropriate orientations.

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@meigwilym β€’ 9 days

Replying to @agmm πŸŽ™

> that could just bring this idea into existence from nothing but a bit of code and some basic principles of physics.

You're putting yourself down here. But congrats on the proposal!

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@Jimmc414 β€’ 9 days

Replying to @agmm πŸŽ™

I'm wondering how feasible it would be to repurpose this code for a concentrated solar power setup.

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@chilling β€’ 8 days

Replying to @agmm πŸŽ™

Absolutely mesmerizing work!

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@HarHarVeryFunny β€’ 9 days

Replying to @agmm πŸŽ™

Cool! Makes a nice object to hang on the wall too!

I wonder if there's any types of filament that could be used to print a mirror-like surface good enough to work ?

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@milofeynman β€’ 9 days

Replying to @agmm πŸŽ™

What happens if you point all the mirrors at the same spot? Fire?

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@dukeofdoom β€’ 9 days

Replying to @agmm πŸŽ™

Did you try sinking any ships with this? https://en.wikipedia.org/wiki/Burning_glass

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@jcun4128 β€’ 9 days

Replying to @agmm πŸŽ™

That's mad creative, like those solar clock things

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@jmd42 β€’ 9 days

Replying to @agmm πŸŽ™

This rocks, and congrats!

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@jonas21 β€’ 9 days

Replying to @agmm πŸŽ™

Bears a striking resemblance to the James Webb Space Telescope

https://en.wikipedia.org/wiki/James_Webb_Space_Telescope

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@ttrbls β€’ 8 days

Replying to @agmm πŸŽ™



@azinman2 β€’ 9 days

Replying to @agmm πŸŽ™

This is very cool. Perhaps I'll similarly do a writeup of my nerdy marriage trick -- I created custom 3D chocolate bars with our faces on them to hand out to guests. It required a ton of iteration and a lot of chocolate work (which is really hard!), but was really special in the end.

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@akomtu β€’ 9 days

Replying to @agmm πŸŽ™

This idea will have many unexpected applications. For example difficult to remove signs projected to flat surfaces.

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@harvie β€’ 9 days

Replying to @agmm πŸŽ™

This is future of the street art. Mount it using liquid nails to some place that is hard to access and point it somewhere where lots of people will see it during rush hour.

Eg.: You can install it in such way that parliament building will get defaced every day during lunch hours by mounting on near building or tall lamp post. Or maybe put it on your own roof, that way nobody can remove it :-)

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@alhirzel β€’ 9 days

Replying to @agmm πŸŽ™

Reminds me of Mitsuba 2; see Caustic Design at about 3 mins into the first video: http://rgl.epfl.ch/publications/NimierDavidVicini2019Mitsuba...

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@jacquesm β€’ 9 days

Replying to @agmm πŸŽ™

What an absolutely amazing piece of work, and even more incredible that it worked the first time. If I had to do something like that it would take me at least three tries to get it to work and quite possibly more than three. Math, 3D printing, love, what's not to like :)

And congratulations!

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@nayuki β€’ 8 days

Replying to @agmm πŸŽ™

Someone else's work that alters light transmission (instead of reflection): https://mattferraro.dev/posts/caustics-engineering

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@mlatu β€’ 8 days

Replying to @agmm πŸŽ™

That is so nice, thank you for sharing

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