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How does DLP technology work?

Q: DLP technology is based on the DLP chip which 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 10,000 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.

Q: What is the difference between DLP technology and DLP Cinema® technology?

DLP Cinema technology is derived from DLP technology, using the same Digital Micromirror Device semiconductor. While the typical DLP subsystem uses one chip, a DLP Cinema projection system uses three to deliver images of incredible clarity and a range of up to 35 trillion colors.

Both DLP Cinema and DLP technology are digitally precise; both can reproduce fast-moving images because of their rapid pixel-switching capabilities; and both use reflected light to deliver stunningly clear and sharp images.

The differences between the two technologies lie primarily in the way they are optimized. DLP Cinema technology is designed to deliver images that exceed the picture quality of 35mm film and meet the DCI specifications for security. DLP technology, used in projectors also delivers outstanding video and graphic images for home entertainment and business presentations exceeding typical image quality created by other technologies.

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