"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.

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