| Author | Message | ||
     Anonymous Rating: N/A |
Can someone please explain to me why shutter glasses do not work with LCD screens? Is it because they are not fast enough (which will not be an over time) or are they inherently different to the point a whole new technology would have to be developed to support it? | ||
| David C. Qualman Rating: N/A |
Two problems - they are not fast enough, and they are polarized. They are not fast enough, so the image that is shown for the left eye is still on the screen when the shutter for the right eye is open. This makes it impossible for the left eye to only see the left image, and the right eye to only see the right image. Then, even if they were fast enough, LCD screens provide polarized light. But, the shutter glasses are also polarized. This means, that they can be blocking each others effect. Of course, it is possible to use different polarization techniques on the glasses vs. the LCD's, such as circular polarization and linear polarization. But, if you don't know what the LCD is using, you would just guess about what to use for the glasses. | ||
| Anonymous Rating: N/A |
Thanks for the reply David. So the first problem seems like something that will be fixed sometime in the future. What do you think the odds are that the polarization will be standardized or the glasses will have the ability to use different techniques by pressing a button, like switching modes? Thanks again. | ||
| David C. Qualman Rating: N/A |
Actually, I am unsure as to the future of the technologies. I am confident that the LCD display guys have a very low interest in modifying their products for the needs of stereoscopy users. They may get their speed up fast enough for gamers, but that only needs to be about 60 Hz. This is not fast enough for shutter glasses, which should run at 100Hz or more. I don't think that it is possible to hit a button and change polarization technique. My understanding is that the polarization technique - circular or linear - is built into the LCD. Maybe you have an opportunity to invent a solution :-) | ||
| M.H. Rating: N/A |
Hi. I am a chemist + crystallographer. I know a bit more how LCD work. The Liquid crystals are just to slow moving for what we need, it is impossible to do that. The solution could be plasma flat display... | ||
| Giorgio Bogoni Rating: N/A |
I think, in the next future, LCD displays will be used with passive polarized 3D glasses and interlaced stereo stuff. We only need that an LCD manufacturer rotates light polarization of the even lines and we'll have a 2D+3D stereo LCD display. Giorgio. | ||
| M.H. Rating: N/A |
Giorgio> Yes. It colud be done by using different polarizers in diferent raws or cullmos ... This technique will requre non-standard LCD panels and it will be even more complicated than existing experimtns with 3D autostereoscopic displays ... In adition both brightness and resolutinon will go down ... In aditoin evrybody familar with polarized stero knwo the 5 angle horizontal head rotation limit nessesery for not losing stereo - very uncomfortable. |
