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Hardware

3-D LCD screens 36

Posted by CmdrTaco from the wouldn't-it-be-nice dept.
KoNfUzEd writes "EETimes has this artcile about how 2 artists have possibly solved, cheaply, how to display 3D images without glasses and with almost no additional cost to existing LCD screens. " I'm pretty sure we mentioned this before, but this is a nice followup piece. I think this would be great. But I think I have a 3d fettish.
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3-D LCD screens More

3-D LCD screens

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  • Mass (Score:1)

    by volsung ( 378 )
    CRT's are very heavy and bulky, so LCD screens will hopefully take over the desktop computer in 5 years (or less, technology estimates are always wrong). No one wants to design a technology that relies on another tech on its way to the graveyard.
  • >Devices like that are very useful for certain scientific and visualization applications [...]

    I disagree. If you're doing work like that you'll want to spend the extra money for a better system. This is too viewpoint-dependent to spend a significant time working with, a slight move of your head and the perspective gets screwed. Better to use LCD shutter glasses, along with a system that guarantees the frame-switching will always be done. (You need to guarantee that the right image is displayed every shutter switch, difficult without a real-time OS or some sort of hardware to do it.)
  • Personally I would say that's two good reasons... ;-)
  • The unfortunate thing is the fact that such "gender neutral" phrases still have a default setting. And it is not NULL. It is, in the majority of cases, male. And for people to whom it does not have the additional setting of male, the effect can be quite jarring and distract from the composition of your text. Personally, I have a preference towards hideous abuse of the plural.
    "They found that it did not help them to use gender neutral terms with default settings."
    Unfortunately, sometimes this requires using the plural with singular grammar, but it's the closest to neutrality our current version of the english language currently supports.
  • and that is the sense in which I meant it. I apologize for any ambiguity, even though it could only be interpreted as such through undue paranoia.

  • How can I get Apple to put these on their next series of PowerBooks that are coming out in fall?

    I would LOVE to play Quake with this!!! Can you imagine how cool this would be??!?!?!

    And all this for FIVE stinkin' BUCKS!!!! This is simply too cool. Damn, I dont' care if the 3D is somewhat limited, for five dollars, it is unbelievably cool!

    Not to mention how cool it would be for something like a GameBoy! Pocket 3D! Excellent!

    Obviously the coolest applications are for games, but I can even see this going into medical fields, etc!

    WOW WOW WOW!!
  • Yeah, I realize that I won't be getting an LCD monitor for 5 bucks. I'm saying that for only 5 bucks, you get holographic technology. I understand that LCDs cost much more than five dollars.
  • The future of games and many 3D applications will likely be with cheap high-quality head-mounted displays. Those displays really do allow you to around and have the environment do the right thing; the fact that they also give you stereopsis is almost secondary.

    Yeah, and remember that one day, computers may weigh less than 2 tons.
  • The reason American television scans at 60 Hz vertical (and European TV at 50, where the power line frequency is 50 Hz) is to avoid having the TV picture "beat" against the 60 Hz pulsation of AC powered lighting(or vice versa), so at 75 Hz you're seeing a 15 Hz flicker and a 25 Hz flicker at 85 Hz and at 60 Hz a 0 Hz flicker; the flicker is there, but it's standing still.
  • Oh please, there's got to be a better use for this than staring at Jeri Ryan's breasts.
  • I work daily in 3D, by viewing two identical molecules side by side with one being rotated slightly along the y axis by a few degrees. It would be nice to have the ability to pop the monitor into 3D mode. Then guests could experience the stoke I have when I view molecules in 3D.

    Computational chemists mouths will water when they hear of this information.

    Chalk one up for Apple, these two people really did think different.

    -b
  • Your explanation is correct as far as it goes, but there is one more detail. With the LCD screen they are able to redirect the light before it passes through the pixel elements, and it passes through without changing direction. In a CRT display the light is produced diffusely by the pixels, so it would be quite a challenge to collimate it and redirect it.
  • Right now, it's not really a disadvantage, but some time in the future I see that only having sight out of one eye could become a real impediment for computer people.

    At least I'm in good company. Jeff Minter has monocular vision also...

  • Nevermind sending an evaluation version to Silicon Graphics...I want ID to get one!
  • As a former optical engineer (if there was ever such a thing), I have to point out a few facts to my fellow readers.

    This tech. is not holographic. Holographic image
    contains all 3D information of its object, which means when your head shifts, you will be able to see the left side, front and right side of the object in image, continously. Instead of this article claims, only your head is in dead center will you see a 3D illusion.

    The 3D trick mentioned in this article will reduce the horizontal resolution of your monitor by half. When you set your LCD to be 1280x1024, you will only see image resolution of 640x1024. Because 2 vertical lines is need to represent 1 "3-D" line.

    In order to achieve holographic, the resolution of the image has to be close to the wavelength of visible light, ( 1 micrometer). No LCD display to date can come near to that yet.

    So hold your horses, we are not in 2500 A.D. yet.

    But it sure makes a good sales pitch, doesn't it?

  • Essentially, the technology is extremely simple. It redirects the odd scanlines to your left eye and the even scanlines to your right eye, allowing your two eyes to view slightly different images at the same time (the sole requirement for being able to display images "in 3d"). Since this is done with a permanent lens, the lens must line up with the pixels on the screen EXACTLY. On an LCD display, the pixels never move, so this is easy to do. On a CRT display, the pixels are not always in the same spots, so creating such a lens would be much more difficult. It's really a simple concept, and I'm surprised no one thought of it before. Regardless, I can't wait for the day I can play Quake 3 in 3d.
  • This could be an incredibly cool application of holographic displays, but why was this not obvious to someone earlier? They're performing operations similar to what other 3D displays do - interlacing two images, here over different sets of horizontally striped holographic optical elements (HOEs) pointed in slightly different directions. It also has to be viewed "more or less directly in front of the screen." So no one can watch...

    What's with these artists? I hear it was an artist that taught the navy how to cast acrylic in 6ft bubbles for undersea exploration...

    d

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