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Old 03-19-2010, 02:12 PM #1
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Exclamation Invisibility Cloak made with lasers

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


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Old 03-20-2010, 06:24 AM #2
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Default Re: Invisibility Cloak made with lasers

Research like this is always interesting even if any applications may be a far ways off.
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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
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Old 03-20-2010, 06:34 AM #3
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Default Re: Invisibility Cloak made with lasers

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*
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Old 03-20-2010, 01:26 PM #4
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Talking Re: Invisibility Cloak made with lasers

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 )
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Old 03-22-2010, 07:01 PM #5
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Default Re: Invisibility Cloak made with lasers

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.
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Old 03-22-2010, 09:30 PM #6
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Default Re: Invisibility Cloak made with lasers

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

now trying to find it again...

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Old 03-22-2010, 09:37 PM #7
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Default Re: Invisibility Cloak made with lasers

Quote:
Originally Posted by cmak View Post
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

now trying to find it again...

peace & thanks
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your idea only works for front and back. what about top and sides? the meta material idea is "3d"
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Old 03-31-2010, 02:08 AM #8
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Default Re: Invisibility Cloak made with lasers

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

Quote:
"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."
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Old 03-31-2010, 07:01 AM #9
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Default Re: Invisibility Cloak made with lasers

Invisibility cloak... just like in Ghost in the Shell
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Old 04-01-2010, 08:24 PM #10
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Default Re: Invisibility Cloak made with lasers

Invisibility seems like a real pain in the ass to make. I hope I will be able to see it.
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Old 04-01-2010, 08:27 PM #11
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Default Re: Invisibility Cloak made with lasers

Everything uses lasers these days.
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Old 04-01-2010, 10:52 PM #12
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Default Re: Invisibility Cloak made with lasers

Quote:
Originally Posted by Scotty 757 View Post
Everything uses lasers these days.
good point... lol
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Invisibility cloak... just like in Ghost in the Shell
was it actually called an invisibility cloak? In Harry Potter I believe that's what it was actually called

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Old 04-02-2010, 03:40 AM #13
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Default Re: Invisibility Cloak made with lasers

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

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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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Old 04-02-2010, 08:47 PM #14
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Default Re: Invisibility Cloak made with lasers

I herd about this too! Pretty nifty
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Old 04-02-2010, 08:51 PM #15
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Default Re: Invisibility Cloak made with lasers

this isnt a detailed video but ive seen others on it and its sortof like a coating that can really pick up light behing objects idk i cant explain it but if you find a better video you might get it. YouTube - Optical Camouflage (Invisible Cloak)
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Old 04-03-2010, 03:16 AM #16
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Default Re: Invisibility Cloak made with lasers

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this isnt a detailed video but ive seen others on it and its sortof like a coating that can really pick up light behing objects idk i cant explain it but if you find a better video you might get it. YouTube - Optical Camouflage (Invisible Cloak)
I guess that's what it would look like for the first prototype. I recognize the song ... It's from Chrono Trigger
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