The LCD projector was invented by American inventor Gene Dolgoff. He began
working on it in 1968 but it was not until 1984 that he was able to
complete the world’s first LCD projector. There were major light losses and
very noticeable pixels on screen. It took him till 1988 to produce a model
which satisfied him and in that year he started Projectavision Inc the
world’s first LCD projector company.
Data Projectors are now becoming very popular as their price starts to come
down. The cost of replacing the lamp is still quite expensive. A lamp can
cost upto $500 for a projector which originally cost around $1000.
There are two major types of data projectors, namely LCD (liquid crystal
display) and DLP (Digital Light Projection). With LCD the projector
reflects the video signal off of thousands of tiny mirrors allowing
improved clarity and resolution. LCD projectors are usually the most
affordable. DLP projectors use “micromirrors” to display their image. This
leads to a perfect digitally projected image. DLP projectors are known for
their amazing image quality. Many movie theatres have started using DLP
A number of people are setting up home theatres with screens around 4 or 5
metres wide which is easily attainable with a data projector. They are also
in use in classrooms and many companies use them for their training classes
as they can be hooked up to a laptop quite easily.
Home theatres generally show DVD movies or live TV shows. Make sure it has
a TV tuner to enable TV channels to be picked up.
When purchasing a projector be sure it has the required output connector
sockets. HDMI is a must these days but DVI gives an excellent signal too.
s-video and composite are also desired. Brightness depends on the
environment. A small dark room will not require as many Lumens as a large
room with room lights switched on. In a dedicated home theatre in a
darkened room contrast greater than 2000:1 is required. If showing in a lit
room then contrast is not that important.
Ceiling mount is desirable because the projector is less likely to be
damaged by people wandering around the room. Make sure the Projector you
are interested in has ceiling mount capability.
Small portable projectors are now available too. One of the most popular is
just 162mm x 102mm and weighs a low 635 grams yet it can project a picture
up to 228cm diagonal plus it has a 30,000 hours lamp life. It does not have
a tuner to pick up TV channels. Selling at just $499 it is amazing value.
It is the Vivitek Qumi DLP Pico Projector.
Ron Bloom is sales support at Tonersonline/Inkredibleinks. He has had more
than 20 years in the Computer Industry. For supplies for your printer and
Office Stationery go to:
Or for friendly assistance call 1300 554 465
From AliExpressAliExpress.com Product - AUN Smart Projector, D5S, Android 7.1 (Optional 2G+32G) WIFI, Bluetooth, HDMI, Home Theater Mini Projector (Optional D5 White)
AliExpress.com Product - VIVICINE 1280x720p HD LED Projector,Android 7.1.2 HD Portable HDMI USB PC 1080p Home Theater Proyector Bluetooth WIFI Beamer
AliExpress.com Product - New listing native 1280*800 smart game movie Video HDMI USB VGA TV Full HD 1080P Home Theater Android OS wifi 3D LED Projetor
AliExpress.com Product - 2016 New CT80 Portable Digital Mini 1800lumen LED LCD Projector HD 1080P Home Theater support USB SD VGA ATV HDMI black or white