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Projection Screen Hologram

J

jrbryner

[H]ard|Gawd
Joined
Feb 6, 2001
Messages
1,530
Here's what I want to do, was hoping ya'll could throw me some ideas, or anything you know on the subject.

What I have is a conference room with a long table. At the end of the table I want to project my computer output into a hologram. Not necessarily '3D', obviously, but I want to give the illusion that the screen is 'floating' there.

I understand it can be done with glass, maybe a special coating on it, or a scrim, with a LCD projector projecting the image onto the material.

custom-c-table-19.jpg


I've looked around and found a couple places, but I couldn't find exactly what I was looking for. I did a science project doing something like this, projecting an image onto a piece of glass, using projectors and mirrors inside a dark box. But this is a little past that. I thought I remembered hearing about a company that was doing something similar for remote conferencing?

Anyway, any links, info, ideas, please let me know.
 
he dosn't mean holigraphic... but the deal like in the science stores were it look like a penny is there.. but you go to grab it and the penny or pig is down inside the big mirriored thing
 
Sounds like you want to do the same thing that presidents and other speakers use to display their speeches. Its a clear piece of glass that sits in front of them, off to the right and left. The image is projected onto it from either below or above and the glass reflects it so that the speaker can see the writing, yet people in the audience can see through the glass like its not even there.

Your projector would sit on the floor or hang from the ceiling directly below or above the glass (acrylic for a cheaper/more durable solution). The screen then would be tilted at a 45 degree angle at a level with the heads of your audience. I would think you would want something like a one way mirror type screen, but perhaps just a tinted piece would give the effect you want. It would be easy enough to experiment with.

As for holograms, they have been invented, but are extremely expensive. I'll need to search for the link as I recently lost all of my favorites. BRB.

EDIT: I cant find the link. Im sure it was posted here though. Someone has it. It was a box that displayed a 3d earth above it. The video had a guy passing his hand through the image.
 
I remember something like that on front page [H] sometime back. They were throwing the image onto steam, I believe. Try to search the front page (at least that search works)
 
Originally posted by ClayDo
he dosn't mean holigraphic... but the deal like in the science stores were it look like a penny is there.. but you go to grab it and the penny or pig is down inside the big mirriored thing
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YEAH! I REMEMBER THAT!, we had one in my 8th grade science class, i put a crumpled up dollar bill and watched people try to grab it, then i laffed at them:D
 
Originally posted by Shadowspawn
Your projector would sit on the floor or hang from the ceiling directly below or above the glass (acrylic for a cheaper/more durable solution). The screen then would be tilted at a 45 degree angle at a level with the heads of your audience. I would think you would want something like a one way mirror type screen, but perhaps just a tinted piece would give the effect you want. It would be easy enough to experiment with.
Click to expand...

Would there be a way to do it so the glass is hanging straight, say from the ceiling? What if the projector was at a 45 degree angle the glass?

On another note... do ya'll remember that big arcade game by Sega? It was a large white box, with a half dome over it, and the game was holographic. It looked like you reach inside and touch the characters.

http://www.klov.com/game_detail.php?game_id=10124
http://www.digitalleisure.com/prttdvd_screenshots.html

How did that work? Not for this application, but something with the same idea might look good around the office.
 
OMFG I used to play that game back in the day i was like 11 or something lol. The game was kinda wack, and like $1 to play (which was alot in 1991), but the effect was so tight ppl used to line up to play.

Fun stuff.
 
Ahhh time traveler the worst profitable arcade game ever. Even Sega admits it.
 
Would there be a way to do it so the glass is hanging straight, say from the ceiling? What if the projector was at a 45 degree angle the glass?
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Thats an idea. If the projector was mounted up above the ceiling (if its one of those hanging ceilings), with just a hole for the lens to poke out of. Hang it at an angle but leave the glass vertical.

If you have the projector then play around with it, acrylic is cheap.
 
If you get HBO check out "Real Time with Bill Maher" At the begining of each show he has a screen that does the very thing you are describing. the screen is in front of the audience and it is a bit translucent when images are displayed, but nearly invisible when nothing is displayed. Quite interesting to see it in action.
 
Originally posted by bonzanego
If you get HBO check out "Real Time with Bill Maher" At the begining of each show he has a screen that does the very thing you are describing. the screen is in front of the audience and it is a bit translucent when images are displayed, but nearly invisible when nothing is displayed. Quite interesting to see it in action.
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I don't get HBO. I looked around to see if by chance someone was sharing a capture of it, no luck. Can someone get screenshot or something of that? I would really appreciate it.
 
what kind of budget are we talking here? there are several companies that make custom laser programs for light shows that can get you software to control several laser boxes. these can be projected on a "wall" of fog. The down side is that fog won't be invisible and has to be maintained thick enough to catch the lasers. The upside is that the fog can be dropped from anywhere like a long thin slot in the ceiling and the lasers can be mounted anywhere so you could get a hologram of sorts. You may just have to start contacting specialists in the field of light/laser projection and see what they can offer.
 
Originally posted by marked
http://www.proscreeninc.com/holo.htm
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Now that is pretty damn close to what I'm looking for. I'm guessing that it doesn't have to be mounted like the way they have theirs, like it could be suspended from the ceiling.

Now if I could find out the exact polymer film they use and make my own. Budget's not really a problem, so I could get one of theirs, but I'd like to customize the sizes... an idea around the office is to have a holographic person greeting customers as they come in the office. We're thinking a full life size 'secratery', more along the lines of that chick from the Final Fantasy movie saying "Hi, Welcome to ......, please come on it" just to impress the hell outta the clients, or scare em to death.
 
If you've never held a piece of glass (hell, go get one from a picture frame) next to a TV at a 45 degree angle, you'll see it's pretty much what you want. The next step is just getting the angles/mounting correct.

Don't go spending $6000 on that stuff above :)

$12 in Acyrlic (if that), a good projector, and you're set.
 
That Sega game was horrible, I never played it because the delay was so long. It was run off of a laserdisc, if you guys remember what those are. ;)


To do it in a manner of reflection, you would absolutely NEED to set that hanging piece of glass at an angle. Otherwise your projection would have to come from the same angle (ie. all the way down the table, or some such deal). It's impractical unless you can magnify the image enough for everyone to see well, which would be very hard.

Think about it this way, each time you relfect an image, it is getting further and further away... by the time you hit the 3rd plane (the final reflection pane), you'd need the original to be 3-4 times as large as the size you'd like to display. You could probably manage some sort of magnification relfection, but then you'll run into viewing distance problems.


IMO, your best bet to set something like that up would be to lower a large flat screen (plasma, lcd, etc) from the cieling. Otherwise, might as well stick with a plain screen and projector. Though a motorized screen and projector could be equally as cool, if done right.
 
You know what'd be pimp... do that to a window on a PC and use that as your monitor. Like have it project from above your head.
 
holographic TV's are in the making right now, theres a few prototypes out there of different designs..they actually work yes!
 
Originally posted by marked
http://www.glassvu.ca/
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I can't figure out if these display the black.

Black should be projected if the projector is calibrated correctly, right? So everything black should be invisible when it's projected onto one of these screens. But in the images, it's black.
 
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