Technology
Large Format Film
IMAX Cameras
IMAX Screens
IMAX Projectors
IMAX Sound
IMAX DMR
How IMAX Works
IMAX 3D |
IMAX 3D
IMAX 3D technology is the most advanced 3D film technology in the world and
is based on human vision. When you look at an object, each of your eyes sees
a slightly different view. Through a process called "stereopsis" your brain
brings the two views together into a single three dimensional image.
IMAX 3D CAMERAS AND FILMS
IMAX 3D cameras incorporate two identical lenses that are precisely spaced
to match the distance between your eyes. This interocular distance allows
each lens to "see" both left and right views exactly as your eyes would see
them. This helps to facilitate realistic 3D images once projected.
During shooting, the images register on two separate rolls of 15/70 film
that run through the camera at the same time and speed.
IMAX 3D PROJECTORS AND FILMS
The IMAX 3D projector uses Rolling Loop technology to run two separate rolls
of film simultaneously past twin projection lenses. To enable the 3D effect,
the lenses are carefully aligned to project both left and right eye views
onto the giant screen.
To see images in 3D, the audience wears either polarized glasses or a
headset that includes electronic liquid-crystal shutter (E3D) glasses. While
they have different technologies, both types of 3D glasses work with the
IMAX 3D projector to provide stunning 3D images.
IMAX 3D WITH POLARIZED GLASSES
To enable the 3D effect, polarized glasses worn by the audience are
precisely matched with the polarizing filters of the projector's twin
lenses. While the lenses superimpose separate left and right eye views onto
the screen, the glasses make sure that each eye sees the appropriate image,
allowing your brain to create a single 3D image.
IMAX 3D WITH ELECTRONIC GLASSES
Instead of superimposing images, two sets of shutters within the 3D
projector switch back and forth at 96 times per second to project alternate
left and right eye images on the screen. During the presentation, E3D
glasses sense a signal from the projector. In response to this signal, the
left and right eye shutters in the glasses alternately open and close in
conjunction with the projector shutters to make sure each eye sees the
appropriate image, ultimately creating the 3D effect. |
