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Invisibility Cloak made with lasers

Curiously_Coherent

Curiously_Coherent

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Hi Folks,

Here's a link to BBC News that describes an invisibility "carpet" capable of hiding a bump from light in 3 dimensions. They use lasers to manufacture the optical matrix responsible for the effect, so it's a pretty interesting read.

It also raises the question: If such a "cloak" is tuned for random light in the wavelengths the eye perceives, would it also affect coherent light? Might one be able to penetrate it and illuminate the hidden item using an IR laser?

Discuss

BBC News - Invisibility cloak created in 3-D

Cheers, CC
 





HaloBlu

HaloBlu

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Research like this is always interesting even if any applications may be a far ways off.
Curiously_Coherent said:
It also raises the question: If such a "cloak" is tuned for random light in the wavelengths the eye perceives, would it also affect coherent light? Might one be able to penetrate it and illuminate the hidden item using an IR laser?

Discuss
Click to expand...
I feel like I'm in class. :poke:
 
Bandanna

Bandanna

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I'll be afraid if invisibility cloaks are actually created.
If those fall into the wrong hands.. *whistles* I'd hate to be a gas station clerk. *kapow*
 
HIMNL9

HIMNL9

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Uhm, wasnt this already made from long times ? ..... as the invisibility mantle in Harry Potter film ?





..... oh, right, that was just a film ..... nevermind, then (J/K :p :D)
 
chipdouglas

chipdouglas

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in the wrong hands...hmmm. the name we shall not speak. LoL they already have made invisibility cloaks using meta material. although it isn't perfect but it does "seem" to bend the light. from what i have read.
 
cmak

cmak

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a great cheap (all in relativity) way to create a basic "invisibility cloak" is to setup a system with two screens (possibly projection or better yet, OLED) and two cameras, with each screen constantly projecting the camera on the other side... k well basically I saw a T-Shirt for sale somewhere that had this kind of a thing setup and it looked pretty cool. It doesn't make you invisible but it does look like you have a nice gaping hole through your body :wtf:

now trying to find it again...

peace & thanks
-cmak
 
chipdouglas

chipdouglas

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cmak said:
a great cheap (all in relativity) way to create a basic "invisibility cloak" is to setup a system with two screens (possibly projection or better yet, OLED) and two cameras, with each screen constantly projecting the camera on the other side... k well basically I saw a T-Shirt for sale somewhere that had this kind of a thing setup and it looked pretty cool. It doesn't make you invisible but it does look like you have a nice gaping hole through your body :wtf:

now trying to find it again...

peace & thanks
-cmak
Click to expand...


your idea only works for front and back. what about top and sides? the meta material idea is "3d"
 
randomlugia

randomlugia

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But it sounds like it only looks like a mirror, and you cant see through it.

"It's like a carpet mirror," he continued. "If you hide an object under it, there is a bump, so you see a distortion in the reflected image.

"We put the carpet cloak on top of that bump and it bends the light so that the distortions disappear.

"You have the impression that the mirror you're looking at is flat."
Click to expand...
 
lazyazzz12

lazyazzz12

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Invisibility seems like a real pain in the ass to make. I hope I will be able to see it.
 
Crazy Jay

Crazy Jay

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was it actually called an invisibility cloak? In Harry Potter I believe that's what it was actually called :p

peace & thanks
-cmak[/QUOTE]

I had to look it up cause I forgot.

They called it the thermal-optical camouflage

It doesn't bend light it displays an image of the surrounding environment or something like that. That would be cool though.

EDIT: I guess that's not similar at all. Except that they both can be made as a cloak for the user.
 
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