A Peak Into the History of Projectors

Projectors have been in use since the mid 1600s. Historical records are
unclear as to who could’ve been the actual inventor of the projector. A
highly-educated Jesuit scholar, Athansius Kircher described and illustrated
a device for reflecting sunlight from a mirror, through a lens and onto a
screen which he called a magic lantern. In recording his ideas, he got
credited with the invention. The magic lantern of those days looked like a
kerosene-fired slide projector. The lantern slides were large and bulky
objects, some of which had pulleys and winches which produced a crude
version of animation.

In the 19th century Michael Faraday burned a lump of quicklime with an
oxygen-hydrogen flame which heated it and gave off a brilliant light. This
caught a lot of attention and ‘limelight’ was born. It soon the main source
of illumination for all but the domestic lantern. By the 1800s the
limelight technology was advanced enough to try its hand in the theater. So
powerful was it that it gave the look of high noon. Lenses and filters were
used to create effects. Limelight was the standard of light projection
until the late 1800s, when electric lighting systems arrived.

Simultaneously projector technology was improving. It was entering the
‘smaller was better’ phase. It was the dawn of the computer and projectors
were keeping up. With the advent of new business practices post 1950s
presentation was the call of the day. A projector that was small,
easy-to-use, reliable, and capable of creating clear, bright images of any
size, in any room, in any light. The call was answered by the multimedia
projector. Digital principles were applied to projectors and digital light
processing (DLP) was born. On the office front better projectors were
called for and the manufacturers rose to the challenge.

In 1996 an SVGA projector using DLP technology, producing digitally-precise
images with superior brightness was developed. It was incorporated with
in-built audio system. So was born the modern LCD projector. Projectors
were getting more advanced and also more affordable. The basic design of an
LCD projector is frequently used by hobbyists who build their own DIY
projection systems. LCD projectors made a come back in 2004-05 because of
the addition of the dynamic iris which has improved contrast up to the
levels of DLP.

The latest in projectors are pocket sized projectors that enable the
salesmen to travel at ease. Another development is laser projectors. Laser
technology in projectors means that projections are always in focus. This
means that there is no need to fiddle with the focus wheel to get a
picture. There’s no need to refocus every time the projector is moved
closer or further away from the screen. The laser projector can also be
completely in focus on uneven surfaces. You can project onto sphere and
other curved surfaces with ease. Laser projectors are the smallest
projectors. They fit into your pocket along with your cell phone.

Check out the new wave in projector technology. Find out more about Mini
Projectors [https://www.2kooltech.com].

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