Description
3D
cinema is a motion
system that enhances the illusion
of depth
perception. Derived from stereoscopic
photography, 3D cinema employs a regular motion picture camera
system to record the images as seen from two dimensions, and
special projection hardware and a pair of 3D glasses are used to
realize depth illusion when watching movies.
3D cinema consists of the following:
Projector
The
projectors that are used to present 3D images are not normal ones
in regular movies. The frame rate of normal projectors is *0 Hz,
while the rate of 3D
projectors is **0 Hz. The proportion is doubled. This is due
to the fact that more output details are required in showing a 3D
movie. The 3D projector must also possess a resolution of at least
2k (***8x***0p) for a clearer image on a wide screen. The
most popular providers of commercial cinema projectors are Dolby 3D
and IMAX.
Screen
Silver
screens are usually used in 3D cinemas. Since plenty of light is
used in showing a 3D movie, a silver screen is needed to provide
more light for contrast. White screens, which are much cheaper,
have soon replaced silver screens in cinemas. Right now silver
screens are making a comeback in 3D movie houses.
Sound system
A 3D
cinema should not only provide a wonderful visual experience but a
great auditory experience as well. In an IMAX 3D theater, up
to *4 speakers are used to provide the viewers with surround sound.
The speakers require *2,**0 watts of electric power to ensure a
fantastic viewing experience.
Glasses
The
viewers need to wear 3D glasses to enjoy the 3D effect. These
glasses are polarized and matched with the projector. Therefore,
the audience can’t just use any type of glasses; instead, the
glasses should be compatible with the projector.
