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True 3D Display
croxis
I am the walrus
in Zocalo v2.0
[url]http://www.aist.go.jp/aist_e/latest_research/2006/20060210/20060210.html[/url]
Comments
So it's finally invented. A true hologram as we've seen for so long only in the science fiction world.
This is one of the most remarkable inventions of all time in its own field. This invention I've been waiting for a long long time. Now they just need to develope it further and make it an AFFORDABLE commercial product for all.
Next antigravity and artifical gravity! :cool:
- PJH
Holograph:alndance:
Does that mean there are a bunch of little balls hanging on strings that the laser illuminates using the focus?
I wonder if an RGB TV like principle would work here given that there is a 3d space and you could look at the "dots" from several angles....
It's a real thing and first ever created. So far all those other inventions have been fake trying to imitate a real 3d image in air with very poor success. They've all used somekind of glass ball, plate or whatever being far away from a true floating 3d image, or even true floating 2d image in air.
I just wish there was a video going around it showing it better.
- PJH
[B]"Plasma Luminous Body?"
Does that mean there are a bunch of little balls hanging on strings that the laser illuminates using the focus?
I wonder if an RGB TV like principle would work here given that there is a 3d space and you could look at the "dots" from several angles.... [/B][/QUOTE]
As far as I can tell, it's simply forcing gasses out and using a laser to superheat them into a plasma state, causing a flash which stays in our visual system long enough to be easily noticed...just like a CRT and its scanning beam illuminating the phosphors, but in 3d. :P Or something that makes sense.
Jake
Wonder if a new term will be invented for the 3D pixels... trixels? ppixels (plasma pixels)?
And actually I believe that a proper choice of lasers to ionize specific gases might even give the capability for RGB trixels... full color capabilities!
And this would finally explain how Draal projected his hologram into B5... selective ionization of air molecules.
However the scifi movie motif of people passing through a holographic projection might hurt a little bit with this system...
[B]at 60hz? I even find 85 to be less than optimal. Gah. Old-style fluorescent lighting systems which were prone to flickering drive me insane...though more recent varieties have save me the pain by using higher frequencies within the tubes. I'd be quite happy at 95-110 hz...but not many 19" screens can do that at 1280x1024. [/B][/QUOTE]
This is true, and I find it quite annoying. My Philips 109S4 is doing 1280x1024 at 85Hz, and that's the highest it goes. At the same time, I'm getting 1280x1024 at 100Hz out of the 21" Trinitron I use as my primary.
Do LCD have refreshrates, or what prinicples do they run off of?
As for LCDs, they don't involve an electron gun bombarding phosphors on the entirety of the screen area nearly one hundred times per second. They simply switch the state of a polarizer to allow light from an always-on backlight to pass through.
I shoudl get an LCD screen. Damn saving up money :(
[B]75 is best for me, but I can tolerate 70.
Do LCD have refreshrates, or what prinicples do they run off of? [/B][/QUOTE]
No, LCD's are either on or off pixels, they have no refresh rate. For compatibility reasons the video card still feeds it at a set refresh rate but what you see has nothing to do with that,
[B] Gah. Old-style fluorescent lighting systems which were prone to flickering drive me insane...though more recent varieties have save me the pain by using higher frequencies within the tubes. . [/B][/QUOTE]
Most modern flourescent systems use 2Khz frequencies so the flicker issue is well, no longer an issue.
[B]No, LCD's are either on or off pixels, they have no refresh rate. For compatibility reasons the video card still feeds it at a set refresh rate but what you see has nothing to do with that, [/B][/QUOTE]
LCDs [i]do[/i] have a refresh rate. It's not the same as a CRT, where the electron gun is scanning over a grid and the magnetic field has to be altered to direct the stream at each individual pixel, but it's similar. The pixels in an LCD display are addressed using a matrix of connectors. During a refresh, one row is turned on. For that row, each column where a pixel needs to be on is also activated. Then that row is turned off, the next row is turned on and the columns for each pixel in that row that need to be on are turned on. The same thing happens for every row in the display, then the process is repeated for the next refresh. The refresh rate is how long it takes to do all the rows in the display.
Btw, I was visiting my parents today and mentioned to my dad about this invention and he said that he just saw a moment earlier something about a new hologram device invention on the TV news. I guess it had to be about this same device. Too bad I didn't see it myself.
I was already wondering why an invention of this significance hadn't been on the news yet.
- PJH
[B]Most modern flourescent systems use 2Khz frequencies so the flicker issue is well, no longer an issue. [/B][/QUOTE]
Thus my mentioning :-D However, I've found a lot of places running standard fresnel-covered flushmounted fluorescent lighting still run at the lower frequencies. I have yet to see a parabolic assembly that was headache-inducing, and don't think I ever will. And every year, I'm seeing less and less of those damned fresnel lights. They lasted too long, anyway.