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How do DLP Cinema Projectors Work?

DLP Cinema systems have been deployed and tested commercially in theatres since 1999. In June 1999, Star Wars: Episode I – The Phantom Menace was the first movie to be entirely scanned and distributed to theaters. Four theaters installed digital projectors for the...

How do Xenon Arc Projector Lamps Work?

For xenon arc lamps, during start-up, the lamp is ignited by a 5–20-kilovolt pulse from a current-regulating ballast to initiate an arc between two electrodes in the quartz tube. After warmup, the ballast’s output voltage drops to approximately 60 volts while...

How Do 3 Chip DLP Projectors Work?

A three-chip DLP projector uses a prism to split light from the lamp, and each primary color of light is then routed to its own DLP chip, then recombined and routed out through the lens. Three chip systems are found in higher-end home theater projectors, large venue...

How does a Single DLP Chip Projector Work?

In a projector with a single DLP chip, colors are produced either by placing a color wheel between a white lamp and the DLP chip or by using individual light sources to produce the primary colors, LEDs or lasers for example. The color wheel is divided into multiple...

What is a Digital Micromirror Device (DMD)?

In DLP projectors, the image is created by microscopically small mirrors laid out in a matrix on a semiconductor chip, known as a Digital Micromirror Device (DMD). These mirrors are so small that DMD pixel pitch may be 5.4 µm or less. Each mirror represents one or...