Polaview 220 DLP Projector
Why Digital Light Processing?
The DMD (Digital Micro-Mirror Device) is a highly integrated
semiconductor light switch and the core of DLP. The DLP-based
projection subsystem in the Polaview 220 projector couples the
DMD microchip with digital signal processing, memory, soft-
ware, optical components and an illumination source for projec-
tion display. Complete projection system prototypes using DMDs
enable compact and lightweight projectors featuring the efficient
use of available light sources. DLP, the only all-digital display,
provides a distinctive approach to projection display systems.
How does the DMD work?
Computer-controlled signals cause the DMD’s square pixels to
switch “on” or “off” at a frequency of more than 1000 times per
second, offering lightning-fast digital control of reflected images.
As a result, a DMD can reflect light quickly and uniformly to cre-
ate high-quality images that can be projected or displayed on a
monitor. Using standard processes and materials, the cost of pro-
ducing display systems based on emerging DLP technology will
be highly competitive.
continued
