Barco cDR+67-D, Брошюра

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What is DLP ?
Digital Light Processing
TM
technology
The Semiconductor
At the heart of every DLP™ projection
system is an optical semiconductor
known as the Digital Micromirror
Device, or DMD chip.
When a DMD chip is coordinated with a
digital video or graphic signal, a light
source, and a projection lens, its
mirrors can reflect an all-digital image
onto a screen. The DMD and the
electronics that surround it are referred
to as Digital Light Processing™
technology.
DLP TM technology is a revolutionary display solution that uses an optical
semiconductor to manipulate light digitally. The result is maximum fidelity, with a
picture whose clarity, brilliance and color must be seen to be believed.
White light passes through a color wheel filter, causing red, green and blue light to
be shone in sequence on the surface of the DMD. The switching of the mirrors, and
the proportion of time they are 'on' or 'off' is coordinated according to the color
shining on them. The human visual system integrates the sequential color and sees
a full-color image.
The grayscale image
A DMD panel's micromirrors are
mounted on tiny hinges that enable
them to tilt either toward the light
source in a DLP™ projection system
(ON) or away from it (OFF) — creating
a light or dark pixel on the projection
surface.
The bit-streamed image code entering
the semiconductor directs each mirror
to switch on and off up to several
thousand times per second. When a
mirror remains on average longer in
the on state than in the off state, it
introduces a light gray pixel. If the off
state dominates, a dark grey pixel is
projected.
In this way, the mirrors in a DLP™
projection system can reflect pixels in
up to 1,024 shades of gray to convert
the video or graphic signal entering
the DMD into a highly detailed
grayscale image.
3 pixel on screen
light absorber
light source
projection lens
3 DMD micromirrors