| Author | Message | ||
     Ray Price Rating: N/A |
Da-Lite do a very good one, but it is like $6000 for 60" x 40". Wow! Anyone else know of any cheaper alternatives? I want to shoot two DLP projectors with polarizing filters onto a rear projected screen for use with polarizing glasses. | ||
| Anonymous Rating: N/A |
Rear projected screen? You can try with a bare matt glass "screen" | ||
| merkler Rating: N/A |
Hello, I've two screens (hard) for rear projection from www.screen-tech.de The size is 2.3 x 2 Meters, the price is about Euro 2000. It is not for mobil use. For mobile-use look on http://www.inition.co.uk, they have something for mobile use. You can roll the screen and put it into a tube. If you need more information please fell free in sending an email. Martin | ||
| Ray Price Rating: N/A |
Matt glass, do you mean some kind of 'frosted' glass? | ||
| Ray Price Rating: N/A |
Thanks merkler, the screen-tech screen sounds interesting although getting it to the USA in one piece may be a challenge, hahaha! Paying that kind of money though, I would really like to see it in action first ;-). I couldn't find the product you were refering to on the inition site? | ||
| ItsikW Rating: N/A |
I made a rear-projection passive stereo setup with dnp UCS material. It worked quite well. However, you must be aware that many rear-projection screens have an anti-glare layer, which normally includes a quarter-wavelength retarder. This will usually mess-up your polarization coding unless you take appropriate precautions. ItsikW | ||
| ItsikW Rating: N/A |
I recently made a polarization ratio measurement on my UCS screen. In the green color I got 13.2. The polarization ratio of the green in the projector beam is 27. So, the UCS screen reduces the ratio by approximately 50%. The UCS is a fairly complex screen. It is made of two elements, with four active optical surfaces. Among other things, it contains a Fresnel lens and a quarter-wavelength retarder. Rear projection screens vary in their optical principles, complexity and construction. I have no idea which commercial rear-projection screen is most suitable for passive stereo projection. Anonymous: Do you have any quantitative data on the depolarization properties of the matt glass that you recommended? |
