Anyone read the article on Wired about building a 3-D theatre?
http://howto.wired.com/wiki/Build_a_3-D_Theater
Full Version: 3-D theatre
QUOTE (geeky @ Sep 1 2008, 07:44 PM) 
Anyone read the article on Wired about building a 3-D theatre?
http://howto.wired.com/wiki/Build_a_3-D_Theater
http://howto.wired.com/wiki/Build_a_3-D_Theater
thats awesome - now the $100,000 question:
How to get this working with a pj.
split design with 3 fresnels? 2 220's behind the lcds ( hmm... replace the 17" lcd's with 10.6"?) with a 330 focused on the 50/50 mirror and the the triplet?
Would it be bright enough? Would the image even project?
or perhaps to rear projection setups though that would be one big 50/50 mirror + enclosure.
QUOTE (insertname @ Nov 8 2008, 04:26 AM)
thats awesome - now the $100,000 question:
How to get this working with a pj.
split design with 3 fresnels? 2 220's behind the lcds ( hmm... replace the 17" lcd's with 10.6"?) with a 330 focused on the 50/50 mirror and the the triplet?
Would it be bright enough? Would the image even project?
or perhaps to rear projection setups though that would be one big 50/50 mirror + enclosure.
How to get this working with a pj.
split design with 3 fresnels? 2 220's behind the lcds ( hmm... replace the 17" lcd's with 10.6"?) with a 330 focused on the 50/50 mirror and the the triplet?
Would it be bright enough? Would the image even project?
or perhaps to rear projection setups though that would be one big 50/50 mirror + enclosure.
I don’t see why it wouldn’t work using projection techniques except for the obvious 50% loss of brightness.
A better approach could be the use of a reflective polariser used to combine the two images instead of the 50-50 mirror. A reflective polariser will transmit one polarisation of light and reflect the other. The output of an LCD is already polarised diagonally so it would be just a matter of using the reflective polariser as a direct replacement for the 50-50 mirror. The advantage is that more light would pass.
A commercial grade polarising beam splitting prism could be used near the triplet but they are very expensive. The other option could be to use a sheet of DBEF attached to a sheet of glass or acrylic. The success of this would be of how flat this could be made.
If it did work correctly using linear polarisation then the next step would be to convert the output to circular polarisation by simply placing a quarter wave retarder after the combined output. This would create circular polarised light for the left and right eyes with opposite directions of polarisation. The advantage of this is that head tilt wouldn’t affect the 3D effect.
DJ
QUOTE (DAZZZLA @ Nov 7 2008, 08:52 PM)
I don’t see why it wouldn’t work using projection techniques except for the obvious 50% loss of brightness.
A better approach could be the use of a reflective polariser used to combine the two images instead of the 50-50 mirror. A reflective polariser will transmit one polarisation of light and reflect the other. The output of an LCD is already polarised diagonally so it would be just a matter of using the reflective polariser as a direct replacement for the 50-50 mirror. The advantage is that more light would pass.
A commercial grade polarising beam splitting prism could be used near the triplet but they are very expensive. The other option could be to use a sheet of DBEF attached to a sheet of glass or acrylic. The success of this would be of how flat this could be made.
If it did work correctly using linear polarisation then the next step would be to convert the output to circular polarisation by simply placing a quarter wave retarder after the combined output. This would create circular polarised light for the left and right eyes with opposite directions of polarisation. The advantage of this is that head tilt wouldn’t affect the 3D effect.
DJ
A better approach could be the use of a reflective polariser used to combine the two images instead of the 50-50 mirror. A reflective polariser will transmit one polarisation of light and reflect the other. The output of an LCD is already polarised diagonally so it would be just a matter of using the reflective polariser as a direct replacement for the 50-50 mirror. The advantage is that more light would pass.
A commercial grade polarising beam splitting prism could be used near the triplet but they are very expensive. The other option could be to use a sheet of DBEF attached to a sheet of glass or acrylic. The success of this would be of how flat this could be made.
If it did work correctly using linear polarisation then the next step would be to convert the output to circular polarisation by simply placing a quarter wave retarder after the combined output. This would create circular polarised light for the left and right eyes with opposite directions of polarisation. The advantage of this is that head tilt wouldn’t affect the 3D effect.
DJ
Zalman sterio3d monitor
Scroll to the bottom - is this what your talking about? and to that point would this work in a pj? (yeah 22" is rather large, I just mean in thoery I'd like a 15.4 or 15.6 version
)quick edit iz3 check this out.
QUOTE (insertname @ Jan 8 2009, 03:45 PM)
Zalman sterio3d monitor
Scroll to the bottom - is this what your talking about? and to that point would this work in a pj? (yeah 22" is rather large, I just mean in thoery I'd like a 15.4 or 15.6 version )
quick edit iz3 check this out.
Scroll to the bottom - is this what your talking about? and to that point would this work in a pj? (yeah 22" is rather large, I just mean in thoery I'd like a 15.4 or 15.6 version
)quick edit iz3 check this out.
More like this:
Click to view attachment
It’s basically two projectors, one folded and one un-folded. The reflective polarizer allows the rear LCD to pass relatively un-altered. It will reflect the top LCD. So it effectively combines both images, each polarized independently for each eye. You could simply use conventional linear polarized glasses or add the ¼ wave retarder and use circular polarized glasses.
DJ
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