Copyright
2011
Bit
Cauldron
Corporation
Page
19
of
28
About
Performance
Tuning
Basic
Function
of
Shutter
Glasses
Both
movie
theaters
and
home
entertainment
systems
work
together
with
glasses
to
allow
a
person
to
look
at
a
flat
screen
and
see
different
images
in
the
left
and
right
eye,
thus
providing
the
information
needed
to
perceive
depth.
Seeing
slightly
different
images
in
each
eye
is
the
basis
of
3D
perception.
All
3D
shutter
glasses
start
with
an
alternating
frame
display.
An
alternating
frame
display
alternates
between
displaying
frames
for
the
left
eye
and
frames
for
the
right
eye.
Shutter
glasses
block
the
light
of
the
left
frames
from
reaching
the
right
eye,
and
vice
versa.
In
this
manner
each
eye
receives
every
other
frame,
and
the
series
of
still
pictures
is
reassembled
by
the
mind
to
produce
a
moving
picture.
When
the
sequence
of
frames
is
sent
fast
enough,
the
mind
will
assemble
the
sequence
of
frames
to
form
a
moving
picture,
or
in
the
case
of
3D,
a
separate
moving
picture
in
each
eye.
Many
HDTV
televisions
produce
60
frames
per
second
for
a
2D
HDTV
image.
Many
3D
televisions
operate
at
120
Hz
or
faster
so
that
each
eye
receives
a
separate
60
frames
per
second.
Figure
1:
Ideal
Shutter
Glasses
Behavior
The
Optoma
ZF2100
shutter
glasses
contain
lenses
that
are
liquid
crystal
displays.
Each
lens
alternates
from
clear
‐
to
‐
dark
every
other
frame,
thus
making
the
left
frame
look
dark
to
the
right
eye
and
vice
versa.
The
name
shutter
glasses
is
a
legacy
of
the
first
shutter
glasses
which
used
mechanical
shutters
as
one
might
find
on
a
camera
or
projector.
Many
televisions
with
the
VESA
1997
‐
11
Stereoscopic
connector
(the
round
3D
glasses
Emitter
port
shown
in
the
picture
below)
behave
almost
identically
to
this
timing.
For
example,
many
Mitsubishi
3D
Televisions
incorporate
the
3D
stereoscopic
connector
and
behave
almost
identically
to
this
timing.
When
attaching
the
device
to
the
back
of
these
televisions,
the
default
settings
for
delay
and
duty
cycle,
work
perfectly
and
performance
is
already
perfectly
tuned.
