Originally Posted by curtishd
I may have asked this before but I still have not gotten a straight answer: Is there any internal polarization in the Panasonic PT AR100U? If so are all the colors polarized the same? If I buy it and make a dual passive unit I will want to do all: circular, linear and omega so I can have the best off all worlds.
Not sure on the AR100U. The Panasonic AE series (2D) is non-polarized but that may not apply to the AR100U. If you have access to one, just put a linear polarizer (polarized sun glasses work) in front of it, rotate the polarizer, and see what happens. If the image darkens or changes colors as you rotate the filter, the projector is polarized.
You can't do all three methods of 3D at once. You need to choose one - circular polarization, linear polarization, OR
Omega. If your projector has all three colors polarized the same, the best choice is linear polarization. Rotate one projector polarization 90 degrees with a retarder (and a polarizer to clean the beam up). It gives you better channel separation than circular.
If some colors are polarized differently than others, it's a whole different game and you need a special retarder that's been mentioned in this forum earlier.
The Omega system doesn't care much about polarization but uses a different set of filters entirely. It's downside is some color differential between channels that might need correction, but crosstalk is virtually non-existent. Also, the filters are very angle sensitive and any tilt will affect performance.
Omega filters can go in the projector internally, but polarizers are only good in front of the lens. They (polarizers) won't take the heat or intense light.