passive glasses 3dtv filter technologies

Discussion in '3D TVs' started by milkkart, May 28, 2010.

  1. milkkart

    milkkart New Member

    Joined:
    May 28, 2010
    Messages:
    2
    Likes Received:
    0
    from what i've read about passive 3dtv (specifically the LG LD950) it uses a filter polarised in alternating directions on each line with left/right images interlaced. this means a max of 1080i instead of the 1080p you can get with active glasses

    why not place a circular polarising liquid crystal filter (like those used for some 3d cinema projectors) over the screen? this would allow the same alternate frame display system as for active glasses TVs but moves the filter from the glasses to the TV.

    supposedly the need for a filter aligned with the horizontal rows of pixels on the screen results in the current passive glasses TVs being more expensive than active glasses based ones. not sure what the difference in manufacturing cost between this system and the one LG are currently using would be but it would at least allow 1080p 3d without expensive active glasses.
     
    milkkart, May 28, 2010
    #1
  2. milkkart

    Ian Administrator Staff Member

    Joined:
    Jul 31, 2009
    Messages:
    177
    Likes Received:
    2
    Welcome to the forums milkkart :).

    Yes, that is possible and some smaller monitors use this - although I've not seen a large TV do this yet. IIRC, it's the recent batch of Zalman 3D monitors that use circular polarization.

    Perhaps we'll see this rolled out on to larger displays in the future.

    Good to have another 3D TV enthusiast on the forums! :D
     
    Ian, Jun 1, 2010
    #2
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads

  1. Sky 3DTV in 2010

  2. 5 New Technologies That Will Change Everything

  3. 3DTV finally in the home!

  4. Active vs Passive 3D Glasses

  5. stereoscopic interlaced polarised filter

  6. World's First Hybrid Active/Passive 3D Glasses by Volfoni

  7. iPONT's Showcases 3DTV without glasses as part of BBC's Wimbledon 3D Experiment

  8. LCD or Plasma active or passive Glasses?

Loading...