Digital Projector by sahumanoj000


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									Digital Projector Guide- Some tips for Digital Projectors

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.
800×600 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

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.

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