DLP Projector

DLP – Digital Light Processing is much known to be used as DLP projector,
DLP is a trademark belongs to Texas Instruments, developed in 1987 by Dr. Larry Hornbeck. This technology used in every new projector speacialy in multimedia projector.

The DLP projector technology

In the DLP projector the image created by microscopically small mirrors in a matrix, known as DMD – Digital Micromirror Device. Each mirror is a pixel and the number of pixel reflect the resolution of the image that been projected.
Some common sizes are: 800X600, 1024x768, 1280x720 and 1920x1080 (which is HDTV).
The mirrors in the DLP Projector moves and reflect the light or throw the mirror to the lens of the projector or send the light to the light dump (heatsink).

Colour in DLP projection

There are 2 methods the DLP can create colour image: single chip projectors and three chip projectors.
The single chip projector means that there is one DLP matrix and in one time frame the light reflect one after one different colour on the matrix to create the colour image, it should reflect red, blue, white and green to make the picture full colour.
The 3 chip projector have 3 DLP matrix, and each one have its one colour, and the light go through each one of them to create full colour picture.


DLP projector are very common today, they are the leaders in professional digital movie projection, because of its high contrast ration and resolution compared to other digital front- projection technologies, like the LCD projector.