Picture of Diffuser (Polarizer) Glasses
As curious as I am, I opened up the LCD screen of an old laptop that would have been thrown away otherwise.

What I found inside seemed to be the most interesting material ever! There were multiple sheets of plastic that looked to be metallic and shiny, but reflected and diffused light in strange ways. 

Trying to come up with a fun project, I settled on diffuser glasses. 
--I honestly do not know what to call these things, polarizers or diffusers. Whatever they may be, please let me know, so I can put up the correct information!

I'll take you step by step to make these fun, yet disorienting glasses.

Note: I will not be responsible for broken monitors or concussions! :)

What it looks like:

 Thank you to my friend for the idea!

Step 1: Materials

Picture of Materials
There is a fairly short list of materials

1. An old laptop or some spare sheets of this diffuser stuff. Old cellphones or anything with an LCD should work.
2. RealD 3D Glasses! (I got mine from Avatar, but really any fairly large glasses without lenses are fine)
3. Flat and phillips head screwdrivers
4. Small pocketknife, or anything with a thin blade that gives you good leverage
5. Scissors
6. White paper
7. Pencil
8. Scotch tape
1-40 of 42Next »
PierreF3 years ago
Hi, your glasses are very nice! Theses sheets diffract the light in a funny way.
But this thin plastic stuff isn't a fresnel lens or a polariser,

but a diffraction grid!

This grid is used in lcd screens to separate colors from the white light, in order to have Red, blue or green pixels! This explain why you can see some "rainbows" with your glasses :)
mhassan53 years ago
Do they effect your eyesight?
rix_1014 years ago
I can't get the two layers apart :/ Any tips?
bilham5 years ago
I tried to make one, but i couldn't put the two pieces back together. Should I glue them? Maybe I damaged the plastic?
louieaw (author)  bilham5 years ago
Yeah. I ended up putting a little bit of glue between the two pieces because they would occasionally come apart. You may have chipped off a small piece of the plastic, but glue would fix that.
LDDR5 years ago
 an old big screen T.V. with the plastic for the screen works awesome as well
davej66945 years ago
dude i made a pair and they are so awesome! thanks man :o
milkywaybar5 years ago
you might be able to find out what it's called here:

Vulcanator5 years ago
i made mine a year ago and brought them into school and played dodgeball while wearing them. it was crazy.
you're using a fresnel lens which is practically a huge powerful magnifying lens. they use those in lighthouses and flatscreen tvs. you take that out on a hot or sunny day, you could melt pennies, concrete and sand. i've actually tried it before and it was awesome. nut i dont recommend to use them as sunglass lens though.
wow awesome, seriously?
yeah, try it on a hot sunny day. i live in southern california so this isnt a problem but if it is a problem, do it during summer
nice,  i'll try sumtime, ty dude
Sorry, but not (necessarily) true. The Fresnel principle does not imply any specific optical design. It just means an optical element is 'chopped up', to fit on a sheet, car fixture or light house. it can be a positive, negative or neutral element. In this case it is a prism.
louieaw (author)  world_domination5 years ago
:-/ not good... haha
geeklord5 years ago
Holy crap!, I made these just a couple months ago out of some safety glasses and the sheets of whatever it is from a camera LCD! I brought mine to school and let a bunch of people try them on; even a teacher tried them on. I got them taken away in 3 of my 5 classes though...
louieaw (author)  geeklord5 years ago
 Haha. Sorry, but yeah. I let some friends use them at school. Everybody loved them, especially trying to walk down the hallways. Big hit!
I got mine taken away because it was distracting to other students, not because of me, really.
uldics5 years ago
When I was a kid, I had a little game clock (Nu pogodi) with the only game being a wolf catching eggs from forur corners , four chicken, dropping them faster and faster. It had approximately 5x7cm screen, monochrome, which only could show some distinct figures at their places. With time the screen faded out, probably from sun or aging, not sure. But I took it apart and took out of the screen, the polarizer sheet.
I had also at the time (80ties) a hand watch, it was called Elektronika 5. It had same type screen, where I took the polarizer sheet out. I screwed my large game polarizer sheet to the inside of my sunglases. Now I could see my watch alone - my friends were amazed.
spstromberg5 years ago
Don't wear these outside. None of the materials used block UV light. The lenses block visible light so your pupils will dilate letting in more UV light than normal and can do damage. It doesn't look like something you would wear for more than a minute with all the distortion. But don't start wearing around RealD glasses just because they look super nerdy, you will damage your eyes.
norsehorse5 years ago
These are like the "drunk goggles" that simulate heavy intoxication. The local police department brought them to our school and a few volunteers got to try to pass the "walking a line" test while wearing them. Nice job!
What is even harder then walking drunk goggles is trying to drive a golf cart through an obstacle course with the strongest ones on.
 Hey BobS, that first microscope shot seems to shrink as I look at it, spooky !
mikeasaurus5 years ago
can you include a shot taken through the lens so we can see what it looks like when wearing them?
louieaw (author)  mikeasaurus5 years ago
 I've tried, but it doesn't really come out the way it looks. I can say that you don't see anything clearly, you run into things, but it's really fun. 
Try either the macro setting on your camera (flower), or the infinite focus setting (landscape/mountains) to see if that helps overcome the autofocus having a poop-fit with this extra lens :D
louieaw (author)  frollard5 years ago
 I updated the instructable. There's a video up now of what it looks like. 
The problem will be that the camera only has one lens, but the effect i spartly down to looking through both lenses at once.
Ceiling cat5 years ago
You can also get the same thing out of the LCD in an old cell phone.  Easier to find and also much cheaper.(sometimes free)
lemonie5 years ago
What fun!

frollard5 years ago
I was just gonna say (as bob points out) that these are basically fresnel lenses that increase the viewing angle of the lcd - which has a poor angle - by spraying a focussed image out in all directions.

The lenses you took OUT of the real3d glasses WERE polarized - you can tell if they're polarized if they change transparency as you change the angle of two layered sheets...try it with the lenses you took out!
dchall85 years ago
Whatever you do don't show this Instructable to any potential new girlfriends.  Wait until at least the 3rd date and she already knows something about you ;-)
BobS5 years ago

Here is a picture taken through my microscope; 100x, of the material you have used. The bars are tiny prisms. Just like a fresnel lens, used in the old overhead projectors to gather light, the sheet behaves like a prism to refract the light left and right, so you can watch a movie together with your girlfriend... 
louieaw (author)  BobS5 years ago
 Whoah! That's very cool. I assumed there was something like that going on, because it refracts the light at an angle
BobS5 years ago

And another picture, looking through the material (which is almost as tough as sheet metal!!!).
RelaxedSoup5 years ago
I recently made a tracing table out of the backlight from and old LCD monitor, and was entertained by the shiny diffusers as well.  I assume their purpose is to gather the light and focus it in one direction, similar to a Fresnel lens.
BobS5 years ago

You beat me on using the materials inside a display!!!  Right now building/ working on an instructable! If all goes well I can publish in about a week!
Doctor What5 years ago
 Migraine inducer!
louieaw (author)  Doctor What5 years ago
 There we go! And nausea as well.
jakebaldwin5 years ago
 This is perfect because my LCD screen is cracked, and I'm getting a new one. I'm looking for things to do with the old screen, and this is perfect! :)
1-40 of 42Next »