whats the big difference with wire grid polarizers? i notice the RS1/2 and VW60 have them, not sure if the VW40 does. Is this just more marketing than anything?

Check out this link. It is about midway down the page.

http://www.jvcdig.com/AVAD/RS1/avadRS1.htm

do all lcos units use this then? specifically the VW40?

do all lcos units use this then? specifically the VW40?
Yes, both Sony and JVC use wire grid polarizers and the WV40 uses them.

Another question for the forum.
LCD had two weaknesses in long term stability
organic compounds in the panels
unstable polarizer

The solution is two fold.
1 Inorganic alignment layer from the D6 generation
2 However do any LCD maker use the metallic wire grid polarizers?

Yes, both Sony and JVC use wire grid polarizers and the WV40 uses them.

Having asked this question re the VW40 when the threads first emerged, I've yet to see a confirmation of this. Do you have a source?

ted

We peaked under the hood and the light path looked very similar to the Sony's other SXRD projectors. However, since it wasn't our projector we did not completely dissemble it and hold the wire grid polarizers in our hand.

[QUOTE=mdputnam;13365945]We peaked under the hood and the light path looked very similar to the Sony's other SXRD projectors. However, since it wasn't our projector we did not completely dissemble it and hold the wire grid polarizers in our hand.[/QUOTE
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I doubt very much that even if you were holding the polarizers in your hands with a magnifying mirror you'd be able to see the "wire grids" considering that they're measured in nanometers....
It would be nice to get some confirmation from a knowledgeable source from Sony about this question, though; Its hard to believe that after R&D for polarizers with wire grid in its SXRD chips and introducing them in its lower-end VW-60 projector as well as the higher-end model VW-200, Sony would make sure to use its previous line of SXRD chips (which did not have the same technology) in the VW-40 projectors simply to differentiate one line from another while continuing to manufacture and assemble the "older generation" chips; I don't think that would be cost-effective...
On the other hand, it could be that after cancelling its line of SXRD RPTVs Sony simply had so many "older generation" chips available that someone in the home-theater division had the bright idea of using these chips in an even lower-priced line of home projectors to compete against this current onslaught of 1080p listing for less than $3.000, hence the VW-40 !
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Marcos

[QUOTE=mdputnam;13365945]
I doubt very much that even if you were holding the polarizers in your hands with a magnifying mirror you'd be able to see the "wire grids" considering that they're measured in nanometers....
Marcos
No you can't see the wire grids, however regular polarized glass and glass with wire grid polarizers do look different, at least the ones we have in our optics lab do. But, like I said we didn't remove the polarizers so it still is open to some question.

Having asked this question re the VW40 when the threads first emerged, I've yet to see a confirmation of this. Do you have a source?

ted

I checked this out with a Sony engineer at the Sony Open House, and he said that yes, all current SXRD projectors use wire grid polarizers. The VW100 was the first in the lineup to use them and all subsequent SXRD projectors have used them.

I checked this out with a Sony engineer at the Sony Open House, and he said that yes, all current SXRD projectors use wire grid polarizers. The VW100 was the first in the lineup to use them and all subsequent SXRD projectors have used them.
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Thanks for the info, Marc...So, can we expect the VW-40 to have the same native contrast ratio as the VW-60 with the major differentiation between them being the pixel-adjustment that is available on the VW-60 as well as some other minor "tidbits" ?
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Regards >>> Marcos

Not sure about that as there could be other internal differences. Also, both of these projectors use a dynamic iris making this pretty much moot. The dynamic iris in the VW60 is more advanced, giving it much higher overall contrast ratio compared to the VW40.