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"How
DLP Projectors Work?
"
DLP
(Digital Light Processing)
projectors
can be attached with
computers, DVD players, VCR
players,
HDTV's and video games.
It
comes in various models and
with
enhanced features. DLP
Projectors
are also called as
Multimedia projectors.
In
mid 1990's Texas Instruments
developed
Digital Light
Processing.
DLP technology is
based
on DMD or Digital
Micromirror
Device. It is a switch,
which
controls the intensity, and
placement
of projected light via 4,80,000 mirrors.In
a DLP-based display there are unlimited colors. You can control the saturation
and clarity to make bright video as clear as you want. The DMD is coordinated
with a graphic signal, a light source and a projection lens.
The micromirrors of DLP are fixed on a panel of small pivots, which enable them to slant either way. If it slants towards (on) light source it creates bright pixels on the screen and when it slants the other way (off) it creates darker pixels. When the bit-stream image code enters the semiconductor, the semi conductor directs the switch to on or off. If the switch remains on more times than off, it reflects a light gray pixel. Otherwise it reflects darker gray pixel.
In DLP systems white light is passed through a color wheel and it runs to the surface of the DMD panel. The color wheel converts the white light into red, green and blue. From these three colors a DMD chip can create 16.7 million colors. So a 3-DMD chip DLP system can create a mammoth 35 trillion colors. Then our eyes understand these colors and see an image.