| Author | Message | ||
     oboude Rating: N/A |
HI, I`m trying to start in the world of 3d projection, so the first that I used is the anaglyph method, and make a 3m*3m projection for 200 people. Now What I want is build my own 3d polarized system, i have only the idea how make, but I really don´t know what exactly need. So if some ona can help me with infomation, I´ll thank you. I`m gone used a dual VGA port card (Geforce 4), them with 2 LCD projector, But I`m not sure if this projector have the polarized system in it, now thi first question. Have I to buy a polarized filter for the LCD?. Now lets talk about the screen, I think that I can used an aluminum screen, tell me what do you think? Do you think, that this system could be work?? PLs help me with ideas or information, I need very urgently this info. thank`s you | ||
| M.H. Rating: N/A |
Some answers: 1) Yes. You must add aditional ploarization filter to the projector. Exisitbg LCD polarize RB in diferent way than G and post-ploarization is nessesery. You can use any polarization filter, e.g. the one for photoaparates .. 2) You must use aprox. 3 times more brigth projectors than for normal projection. Light lose during polarization is about 75% (double one in glasses and in projectror polarizer) 3) This system works. It was tested by several other people. 4) You can use some aluminium spray color on any material to get some non-depolarizing screen for experiments. I suggest you to buy Stewart screen material later - better light gain, less polarization ghosting ... 5) The signals on the VGA output from all exiting dual ouptut cards are not genlocked. It mens that you can e.g. have frame 1 one one projector and something betewwen frame 1-2 on the second. Human brain can partialy compensate this ... Let me message on this board if you need more details ... | ||
| ItsikW Rating: N/A |
I developed a simple method to project stereoscopic images with standard commercial LCD projectors. See my announcement under "Cost effective stereoscopic projection system" on this board. This method is very efficient optically, it does not use polarizers. So, you get a brightness like in a single non-stereoscopic projector. I can help you to make such a system. Itsik |
