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SONY
CAT
rear
projection.
WI-IAT IT IS. The most popular choice _br giant screens.
These are single piece,
serf-contained
televisions.
They typically
use three small CRTs--one
each _br red,
green and blue. The resulting
light is projected
through a lens and mirror system
behind the screen.
BENEFITS.
As in direct view, rear projection
CRTs offer superior performance
and
moderate
cost. With the clever packaging
ol"today's rear projection
systems, CRT
rear projectors
are not much larger than rear projection
systems using LCDs.
And
there are no altitude limits.
LIrvIITATIONS.
Can't quite match the viewing angle ol"direct-view
CRT. Requires
periodic convergence
adjustment
to ensure CRTs remain in alignment
and provide a
clear, sharp picture.
To make convergence
easy, Sony's Flash Focus
TM
system
perl"orms this alignment
in seconds.
CRT rear projection
can be affected by image
retention and "burn in." Care needs to be taken when selecting aspect ratio and using
videogames
to avoid the possibility
ol"image retention due to uneven aging ol"the
CRTs.
And your speakers need to be magnetically
shielded, so as not to interfere
with the CRT electron guns.
The Sony Guido 1:oHomo Thoal:or
22
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