3. CRT PROJECTORS
• Uses three small, High
Brightness CRT
(Cathode Ray Tube)
to generate image.
• Each CRT generates
either Blue, Green, or
Red Images.
• Image is focused and
enlarged by a lens in
front of CRT face.
5. LCD PROJECTORS
• A beam of high-intensity
light travels through
thousands of shifting pixels in
an LCD display instead of
through a frame of
translucent film.
• The light splits into three
hues, then travels through
three LCDs before
recombining in a prism to
generate the crisp, colorful
image projected on the
screen.
7. DLP PROJECTORS
• A data projection
technology from Texas
Instruments that produces
clear, readable images on
screens in lit rooms. DLP is
used in all types of
projection devices, from
data projectors that weigh
only a few pounds to large
rear-projection TVs to
electronic cinema
projectors for movie
theaters.
8. Projection Methods
Rear View Front View
Images are projected A display system that
and reflected onto the projects an enlarged
screen from behind the television picture on the
screen, unlike front surface of a
traditional video and reflective screen.
film projection in which A good example of this
the projector itself is would be a simple
placed in front of the Cinema movie
screen, such as in a projector
movie theater.
9. Lumens/ Throw/
Lamp
• Lumens is a type of unit of
measurement that allows
people to determine the
amount of light being
emitted by a projector
• Throw in film terminology is
the distance of a movie
projector from the screen- it
is the distance the image is
thrown onto the screen
• Lamp is the light bulb inside
of the projector
