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Cheap 3D LCD

 Turn up the brightness and wiggle your head from side to side.
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Make a sheet of transparent plastic so that it is flat on one side but moulded into facets on the other.

Design the facets so that they act as a lens array, or set of light pipes, making certain pixels only visible from certain directions.

Group those pixels into blocks so that the upper right of the block is visible from the lower left of the screen and so on.

Attach the plastic to a conventional LCD display so that the pixels line up with the light pipes in the sheet of plastic.

Write a video driver so that generates the appropriate amount of perspective views and send pixels of each view to the appropriate pixels of the LCD display.

Turn up the brightness and wiggle your head from side to side.

Say, "Ooh! Ahh," in the manner of someone watching a firework display.

Think, "I can't believe nobody has done this before."

Google madly.

__________

Say you have a 1024x768 pixel screen and want 8 horizontal views and 4 vertical. You would have a total of 32 views of 128x192 (non-square) pixels. Each groups of 8x4 pixels would show one pixel of the 3D image.

—st3f, Feb 24 2003

Sharp's 3D LCD http://web.archive....te/news/020927.html
[krelnik, Oct 05 2004, last modified Feb 17 2005]

3D display developed by NYU http://www.mrl.nyu....rojects/autostereo/
Works really well (got a demo of it the other day) [ilyar, Oct 05 2004, last modified Oct 17 2004]

3-D TV That Actually Works http://www.wired.co.../news/2006/08/71627
Philips' WOWvx technology places tiny lenses over each of the millions of red, green and blue sub pixels that make up an LCD or plasma screen. The lenses cause each sub pixel to project light at one of nine angles fanning out in front of the display. [xaviergisz, Aug 21 2007]

QP Made Easy http://www.rambles....chton_timeline.html
[Giblet, Aug 23 2007]

tablet-sized device with a 3D display by Texas Instruments http://www.pcmag.co...2817,2359931,00.asp
The 3D display uses a standard 120-Hz LCD with a special overlay film from 3M that can direct images either towards your left or right eye. By flickering two images very quickly – running at 60 frames per second rather than the usual 30 – the display transmits a different picture to each eye, creating a simulated 3D image. [xaviergisz, Feb 18 2010]

Toshiba to launch no-glasses 3D TV this year in Japan http://www.goodgear...s_3d_tv_year_japan/
Toshiba's new TVs have a thin sheet of small lenses in front of the display. Behind this lens screen is a custom-developed LCD (liquid crystal display) panel. Each screen has 8.29 million pixels -- four times the number of pixels in a conventional "full HD" television -- organized into groups of nine pixels of each color. The nine lenses split light from each bank of pixels and send it to nine points in front of the TV. [xaviergisz, Oct 05 2010]


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Annotation:







       damn. :o)
—st3f, Feb 24 2003
   

       // Halluciongens //   

       Spanglish?
—RayfordSteele, Feb 24 2003
   

       At some level this strikes me as similar to Sharp's new 3D LCD panel technology. They don't do the 8x4 views, just one for your left eye and one for your right for fixed viewing. But its the same concept of taking pixels and directing the light so they can only be seen from certain angles. Soon to be in a laptop near you. See link.
—krelnik, Feb 24 2003
   

       Thanks for the link, krelnik -- it sounds like similar technology. I'd have been surprised if nothing came up.   

       DrCurry: What?
—st3f, Feb 24 2003
   

       I've seen the Sharp display in person and, well, it's okay. You have to be in the sweet spot both side-to-side and distance-wise before it really locks on. Even so I think it too blurry for my tastes.   

       One thing that was interesting is that they had this display that showed you how the technology worked (a physical version of the diagram in [krelnik]'s linked article) with glasses that you could look through to see two images derived from one common source. That was helpful in understanding how they pulled it off.
—bristolz, Apr 29 2003
   

       Philips have done the same thing - looked pretty crappy.
—(o)-(o), Jul 15 2004
   

       just have two very tiny LCD screens, that fit into a "Viewmaster©"...instant 3D. I still have my Viewmaster© from when I was 12 years old....loved it...still do.
—Blisterbob, Aug 21 2007
   

       Strangely enough it reminds me of Michael Crichton's explanation of seeing multiple dimensions and quantum physics in timeline.   

       See Linky.
—Giblet, Aug 23 2007
   

       Great idea, but very baked. Google "Lenticular Display". I've seen the Synthagram display that works on this principle. The current displays are not that great, due to the fact that having "N" different viewpoints divides the resolution of each viewpoint by "N". You've probably seen some high-res 3D postcards made with the same technology, though.
—cowtamer, Feb 19 2010
   

       But was it baked seven years ago? I remember them from maybe five years back, but not before that.
—nineteenthly, Oct 05 2010
   


 

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