Instructables

hologram technology

holograms are the most popular sci-fi device ever thought up but no one has made a actual entity that can stand in front of you. hologram progectorsfit in pockets in movies why don't they have them now.
the closest thing i could find was a video; http://www.youtube.com/watch?v=pLa1rdfu6Bg

my idea was to have multicoler lazer diodes that target dust particals in the air and reflect off of them to create an image or perhaps millions of nonobots that position themselves in the air obove the projecter for a more precice image.

what do you think?

Picture of hologram technology
holo handheld.JPG
yoda.JPG
holo cell.JPG
tinker2343 years ago
what about http://www.amazon.com/Mirage-3-D-Instant-Hologram-Maker/dp/B0002W3J7M
DehLeprechaun (author)  tinker2343 years ago
ha!! i have one of those they're really fun and very convincing! If anyone has ideas about how this could be used for a hologram display POST IT!!!
uh knone yet
mistaken3 years ago
i always thought you could make a hologram by having lasers targeting water particles from a modified mist or fog machine.
DehLeprechaun (author)  mistaken3 years ago
i was thinking that wud work but the problem is that the lasers would pass through/hit other particles not intended...
There are 3D "fog" displays. Part of the trick is to use multiple beams -- you end up with the whole field glowing slightly (from the effect you describe), but you get bright spots where multiple beams intersect.

These aren't technically "holograms" (they aren't produced from a recorded or generated 2D interference pattern), but they can still be pretty cool.
I think holograms are useless, there are better ways of doing the things that holograms would do.
So you've never tried to create a light beam with orbital angular momentum. A little bit of research might help you to sound like you know what you're talking about.
What im saying, is that holograms are not as efficient or advantageous as some other methods of conveying what holograms would try to convey.
But you also seem to be unaware that holograms are also used significantly not for "conveying," but for manipulating the physical properties of light, which cannot be done by other methods.
Oh - I thought u referring to a starwars-esc type where you would see the projection of a person.

I do see a great many applications of the method you described.
>A little bit of research might help you to sound like you know what you're talking about.
...

I'm totally for informing n00bs and all, but I don't think this particular comment merits quite this much condescension. Yes, there are applications of holograms that he (along with I and 95 % of the general population) knows nothing about, but I highly doubt he's talking about what you are. My guess would be he's talking about a hypothetical Star Trek hologram (or worse, the stupid CNN "hologram"), and saying it is his opinion that those are not ideal for the purposes they (would) serve. Yeah, as a physicist you're aware of real-life applications of holograms that he has no idea about, but that doesn't mean he can't have a valid opinion about the type of pop cultureish hologram that (judging from the pictures) this thread seems to be discussing.
This was the fifth or six comment in exactly the same overgeneralized vein, all thrown out there within an hour or so. Making an absurdly broad statement like "holograms are useless" doesn't, to my mind, deserve a carefully nuanced response.
I've seen several of his/her other posts, and agree they aren't the most inspired. However, be that as it may, I still say you two are talking about totally different things - he's thinking of the holodeck, and you're thinking about Real Life Holograms, which he (almost certainly) has never even conceived of before.
dimitrisa103 years ago
What about volumetric projectors
:) saw a good instructable on that
DehLeprechaun (author)  dimitrisa103 years ago
where?
http://www.instructables.com/id/MAKE-a-VOLUMETRIC-PROJECTOR-from-JUNK/
and
http://www.instructables.com/id/Make-a-volumetric-display/
DehLeprechaun (author)  dimitrisa103 years ago
iv seen a clock that works on this principle but the problem is if you touch you could ruin it or it could ruin you
kelseymh3 years ago
http://www.sciencenews.org/view/generic/id/65026/title/Coming_soon_Holographic_Skype
MadProAudio3 years ago
Or, you could suit-up and enter a really dark room with black curtains and a cylindrical screen made out of some really nice technology in the middle of it about 3' in diameter with a whole slew of simple projectors vectored into this can from your really black walls. You're webbed-up with sensors that put you at any point in that room and allow the projectors to individually compensate for the lack of projection from another location. . I have absolutely no clue.?!:)
DehLeprechaun (author)  MadProAudio3 years ago
theres actually tech toward this but not sure were to find it or how expensive
probably really expensive;P
oobi073 years ago
There must be a container for the floating particles. Something like a cylindrical or a square container of fluid or air mixture. Then 3 or more usb lasers of different colors are attached on the base to fire scanning lights on the medium.
DehLeprechaun (author)  oobi073 years ago
you could also have a cube of glass that would have many lcd screens sandwiched between layers and then it would light up in cut sections and depending on how many screens u hav the mor hi def the shape is