The Marketers’ Senate

Digital projectors are equipments of modern technology. These
are used to convert image data directly from the computer onto a
screen via lens system. Digital projectors provide visualization
of data that is actually stored in a computer for presentation.
These projectors enable the viewers to watch moving images from
a DVD, digital versatile disc player. Advertisers or sellers
also use these projectors to give demonstration of products to a
large number of customers. It can easily convert written
documents onto an interactive whiteboard.

Digital projectors play an important role in the formation of
home theater systems. These projectors use resolution of SVGA
standard i.e. 800600 pixels in expensive devices. Cost of
digital projector is determined by its resolution as well as its
brightness. If you’re going to use it in large rooms or big
conference halls its brightness should be from 1,000 to 4,000
ANSI lumens.

First digital projectors, Eidophor projectors were introduced in
1950. Eidopher projectors used an oily surface in a rotating
disk with light shining through it and employed an electron beam
to disrupt oil in a specific manner. Eidophor projectors were
not able to produce colors. Nowadays there are several high
quality models of digital projectors are available in market so
Eidopher projectors are less common. Following four technologies
are used in digital projectors:

High intensity CRT LCD projectors using LCD light gates Texas
Instruments’ DLP technology Eidophor oil-film projectors
(obsolete)

At present LCD projectors use Texas Instruments’ DLP technology
whereas the high intensity CRT devices are suitable for enduring
installations. Entire working of cathode ray tube digital
projectors is like CRT television set. These projectors may be
configured with one RGB color tube that has three colors red,
green and blue with a single lens, one black & white tube with a
rotating color wheel or three RGB color tubes with three lenses.
Projectors having cathode ray tubes are usually bulky thats why
these are the best projectors for fixed installations.

LCD digital projectors are portable and lighter enough in
comparison to CRT and can be easily shifted from one place to
another. These are very much popular and available in various
shapes and sizes. CRT and LCD digital projectors come under the
category of transitive projectors.

Reflective projectors are the superior digital projectors that
provide high quality images. These are affordable and offer next
level of entertainment. Everyone can enjoy home theater
applications with the help of digital projectors.