 |
|
|
|
|
|
|
|
|
|
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
 |
 |
 |
 |
 |
 |
 |
 |
Digital 3D Systems
Polarisation Filter System
Supplier: RealD
An active polarisation filter is places in front of the D-Cinema projector's lens. This filter aligns the light waves of the stereoscopic subframes in a different way. The lenses of the passive 3D glasses are polarised accordingly so they let only pass the right pictures or the left eye pictures. As a conventional matte white screen would neutralise this polarisation, a silver screen is required.
Filter Wheel System
Supplier: Dolby
A rotating filter wheel assembly integrated in the D-Cinema projector slightly dislocates the position of the light waves for the RGB primary colours of the right eye and left eye pictures. The filter lenses of the corresponding passive 3D glasses are tuned to the resultant colour shift, so each eye can only perceive one of the two projected 3D subframes.
Shutter Glasses System
Supplier: XpanD (NuVision)
The D-cinema projector signals a special sync box whether a right eye or a left eye picture is projected at the moment. The sync box controls the active shutter-glasses by infrared communication, dimming their lenses alternately so only one eye at a time can look at the screen. If the picture for the left eye is projected, the right glass becomes opaque, and vice versa.
Stereoscopic projection: How 3D Cinema works
