DLP

Digital Light Processing™ technology is based on the Digital Micromirror Device, or DLP® chip, an optical switch semiconductor. The DLP® chip is comprised of a standard memory cell on top of which is mounted a rectangular array of up to a million hinged, microscopic mirrors.

In a DLP® projection system, red, green, and blue light is shone alternately onto the mirrors, which switch on and off in response to a video or graphics signal being fed into the underlying memory chip. The mirrors can switch at a rate of up to 5,000 times per second; the light they reflect is directed through a lens and onto the screen, creating an image.

In projectors for high brightness applications, three DLP® chips are used—one each for green, red, and blue. Light from the lamp is split by a prism into these three colors and directed towards the appropriate DLP® chip. The image is then created by recombining these reflections from the corresponding pixel on each DLP® chip.