[AG-TECH] Projection screens

[Markus Buchhorn]

G'day y'all

A quick question: What are you using for projection *screens* ? I'm looking 
at a range of options for some rooms here, and some scenarios require 
different things. For front projection I have seen a variety of wall 
surfaces, but I'm looking at rear-projected systems (tidier, quieter, 
easier-to-maintain, etc.). So, what is out there and what should I look for 
or avoid? It seems like most sites use either a vinyl screen, or other 
plastic, or a special glass - but I have no good details on any of them.

As an additional twist, one site is looking at (natural colour) stereo 
displays for large groups. This means one high-frequency projector and 
shutter-glasses, or two normal projectors with polarisation filters in 
front of them and users wear sunglasses :-) I have heard it said that you 
can't do this with rear-projection systems as the screens scatter too much 
and screw up the polarisation. I don't know if that is the main problem, or 
that these systems usually have mirrors to fold the optics, and it is the 
mirror that causes the problem.... <shrug>

I'm guessing some of the CAVErs on this list have also looked at these 
kinds of issues?

Any comments, advice, suggestions, etc, greatly appreciated!

Cheers,
	Markus
Markus Buchhorn, Faculty of Engineering and IT,          | Ph: +61 2 61258810
email: markus.buchhorn at anu.edu.au, mail: CSIT Bldg #108  |Fax: +61 2 61259805
Australian National University, Canberra 0200, Australia |Mobile: 0417 281429