User`s manual

doc-3331-2 OverView cDG67-DL (August 2003) 3-4

 Color Wheel

The color wheel spins at 178 Hz and consists of four segments, one for red, green, blue and

white.

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DMD

A Digital Micromirror Device (DMD™) is an array of tiny, tiltable mirrors, each of which cor-

responds to an individual pixel. The mirrors are orientated by applying an electrical signal and

can take up alternatively two positions: tilted +12° and -12°. If they are in the +10° position

light is reflected to the screen, otherwise it is reflected away.

The projector employs a 0.7" single-chip DMD. The chip has 1024×768 active mirrors (XGA).

DMD is a trademark of Texas Instruments Incorporated.

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Electronics

The electronics comprises graphics and video signal processing electronics as well as the func-

tionality to control the projection engine.

The electronics converts the image signals of the graphic card into control signals for the

DMD’s. The image is electronically mirrored in the process and the reversal of the image fol-

lowing the deflection mirror is thus compensated.

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Data Cable

The digital display information is transmitted via a cable directly from the controller to the

DMD control electronics.

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Lens System

The projection lens system has been especially developed for OVERVIEW CDG67-DL. It proj-

ects the image resulting of the DMDs via the deflection mirrors onto the rear of the screen

module.

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Fan

A fan in the housing ensures that the unit is sufficiently cooled. A second fan positioned be-

neath the lamp lift optimizes the air circulation.

 Deflection Mirror

Due to folding up the optical path by a mirror the installation depth of the

VERVIEW CDG67-DL projection unit is only 940 millimeters.