Introduction: Upside-down Glasses

Here's a quick simple pattern for making glasses that turn your vision upside down. Although this could be cut by hand, it'd be nearly impossible. All of this was designed for the Instructables laser cutter. The only things you need for materials are 4-40 machine screws, standard washers, and 4-40 nuts, four of each. You'll also need a piece of mirrored plexiglass.

Step 1: Download and Laserize

If you just want to get yourself a pair of perspective flipping goggles, all you have to do is download the file, arrange the parts to be cut (being sure to include two earpieces, they're identical, you know) and laser cut yourself a pair (mirror side down on the plastic, please.) It's pretty simple.

What those of you without laser cutters (poor souls that you are) may take away is this cool construction method I learned from puzzle maker Lee Krasnow. I measured my screws, nuts, and washers, and modeled them simply in cad. I measured the width of my plexiglass. Knowing those dimensions, I could make some tabs in the design. When the design is put together, the tabs keep the different panels aligned and square to one another. the screws fit down through the holes, and connect with the nuts in the adjacent panel. The nuts are held fixed by their tight fitting in the plastic. Putting these together is a breeze, really.

Step 2: See?

These are just a fancy version of holding a mirror underneath your eyes and looking down into it. The effect is pretty cool, but the design could use a little more tweaking to be perfect.

I went through a lot of revisions in the design, testing and prototyping the model before reaching a final product. The laser cutter made it easy to test new revisions on the spot.

Step 3: Cool.

Nes pas?

Comments

author
patriots8888 (author)2011-06-12

(: ǝsǝɥʇ
ɟo ǝuo ʇuɐʍ ı ¡ןooɔ

author

woah what happened to my coment….

author
DeveloperL (author)patriots88882017-02-19

Hello,

that text you made was incorrect.

This does not rotate 180° on the Z axis. Instead, it would invert

your Y scale from 1 to -1.

This being said, you would have to have the text in correct order, but upside down.

(For example: '¡ןooɔ' would be 'cool¡')

author
DmitriyHoh (author)2014-01-30

Nice job but a lot of extra light into your eyes and very

small field of view.

Among scientists this device is named invertoscope.

author

Check this site out it is preety cool: Upside Down Exclamation Point

author
Adum24 (author)2011-09-24

Woah, the glassses are, like, upside down or something! ;) (JK LOL)

author
Cyberscann54 (author)2011-06-11

found the real deal for $30 at http://sciencekit.com/

author
Cr4zy_Dud3_0n_F1r3 (author)2011-06-10

Cool, saw something like this on Bones today, fascinating.

author
HisDivineShadow (author)2009-10-11

What is the point of removing vids?
it ticks me off...

author
old_bass_masta (author)2008-02-24

wear them constantly for 3 days and your vision will correct it by flippin it over

author

ok i made and have been wearing for three days (much to my teachers delight) and my vision has not flipped over. you are a LIAR! LOL

author
Meie (author)duck-lemon2009-04-26

yeah, i did it too :p and it didn't flip over as well :(

author

heh, maybe you are just weird! jks jks man. My dad told me that one. and some people's vision flipped

author
bujo0 (author)old_bass_masta2008-09-07

ya, if you were them constantly, like never take them off, for long enough your mind will flip the image in your head and you'll see normal. then when you take them off, everything will be upside down until your brain resets it. they did this as a psych experiment once. i wish i had a laser cutter to make a pair and try it myself

author
old_bass_masta (author)bujo02008-09-07

if iwanted them id use my uncle's plasma cutter. i love it!

author
Meie (author)2009-04-23

check my painting i made with the glasses:

http://www.youtube.com/watch?v=XdXgoLezKnc

(btw, after some research, i found out its waaaay better to use some prisms from binoculars, much more sight and you don;t have to look down)

author
T3h_Muffinator (author)2007-12-18

Haha! Cool! Awesome attempt, Eric! You were so close! I'm just curious - where does one go to get acrylic sheets/ mirrored acrylic sheets? (Other than the Instructables Supply Shelf....)

author
prank (author)T3h_Muffinator2008-01-27

usplastics.com it's called reflective acrylic or mirror-backed acrylic. Something like that.

author
nagutron (author)2007-12-18

i think someone with a steady hand could cut these out with a small saw. You don't need all the tabs and grooves; they could just glue them together with the right angles. You might also try uploading the design to Ponoko; then people can just order them directly, from there...

author
Bubjo (author)nagutron2008-01-15

I cannot open the pdf file with instructions. I see you did it. Can you email me the instructions as attachement? Thanks in advance. Bub bub@buroojongerius.nl

author
zachninme (author)2007-12-29

Cool! Although, I think your french needs a bit of work, n'est-ce pas? ;-) Have you tried wearing them for extended periods? That sounds fun...

author
ryanzxc (author)2007-12-19

Good instructable. It reminds me of a pseudo scope. it inverts the image so the right eye sees what the left eyes sees and vise versa. It severely messes with you depth perception. Both are cool demonstrations of the brain's interpretation of vision.

author
bofthem (author)ryanzxc2007-12-24

I'd love to do a series of perception bending tricks.

author
rickharris (author)2007-12-19

better still wear them for a while - Psychological experiments show that after a while your brain does an invert of the image so you see properly. When you take them off for a while your vision is inverted until your brain re converts to normal - thus showing that vision takes place in the brain not the eye.

author
GorillazMiko (author)2007-12-18

lol, cool and funny looking! haha

author
Patrik (author)2007-12-18

Heh - pretty goofy. :-D You could also get the same effect with a set of (heavy) lenses. If you want to maintain the proper line of vision, you can rig up a similar set of glasses with three reflections, using a mirrored V suspended above a horizontal mirror. If you want to switch left-right instead of top-bottom (i.e. view the world in mirror image), you could rotate the entire light path for each eye, such that the mirrored V is now oriented vertically. You could also switch the left and right eye. As you've discovered, most of these designs will only allow a fairly narrow field of vision, and/or get very bulky. For a wider field of vision and even greater flexibility in visual distortions, get a set of VR glasses and 2 webcams...

author
ac1D (author)2007-12-18

Look cool! Can you add a video of the result ?

author
Brennn10 (author)2007-12-18

Wow, these are great! Nice job!

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