| Author | Message | ||
     Larry Elie Rating: N/A |
I seem to remember a thread on this, but don't know if anyone has put forth the required effort yet. 25-30 years ago I did a lot of physical optics. Choppers are rotating discs with slots that are used to break up the DC signal from a optical source or detector to make an AC signal so the modern signal processing can be used on the signal. They are quite common. Princeton Applied Research (PAR) and Stanford Research Systems (SRS) are two of the many companies making choppers (the SRS is cheaper and more versital) and these have all sorts of syncing abilities and the wheel can incorporate a Polaroid disc to polarize the signal. If one placed a polarized chopper in front of a VERY BRIGHT video projector with a interlaced signal, and set the chopper to sync on say the left frame (about 15 Hz), the chopper should sequentially block one frame after the other, giving good (albiet flickering) 3D. LCD's of course are 30% or so polarized, so you have to pick the angle right and have plenty of intensity. DLP's already have a chopper spinning with a color wheel so phasing would be required making it even more flickering. But one should STILL be able to do polarized 3D on ONE projector, if the intensity is high enough. Has anyone tried this? |
