|powerdome VELVET - 2,500,000:1 Contrast Projector for Planetariums and Domed Theaters|
|Home Theater News DLP Front Projector News|
|Written by AVRev.com|
|Monday, 06 October 2008|
Video Projection now Compatible with Night Sky Contrast
Carl Zeiss developed the VELVET projector primarily for full-dome projection in planetariums and other domed theaters. Other fields of application such as simulators are feasible as well. For the first time, VELVET implements the capability, long hoped for by planetariums, of a video projection that can be superimposed on the optical sky without spoiling its brilliance. Thus, astronomical objects such as gaseous nebulae and galaxies for the first time appear as if embedded in the velvety black depths of the universe.
Innovative Optical Design
The leap in contrast to more than a million to one has been made possible by an innovative optical design that excludes stray light and, thus, a gray background from the start. It is with good reason that Carl Zeiss relies on Texas Instruments' DLP® technology. More than ten million units installed worldwide testify to the reliability of DLP® imagers. Image stability over many thousands of operating hours is an essential advantage for the users. Whereas competing technologies suffer from declining color saturation and contrast after a few thousand hours, DLP® chips have a defined color behavior with virtually no loss in image quality.
Tailored to Multichannel Dome Projection
Carl Zeiss has furnished its VELVET projectors with further properties that make them especially suitable for use in domed auditoriums. The lamp housing is independent of the projector. This permits users to employ projection lamps of different type and output. The projector can be installed in oblique positions without affecting lamp life. Brightness matching between the projectors in a multichannel system is effected by controlling the lamps rather than the video signals, resulting in an added gain in multichannel image quality.
The new projectors will become available at the beginning of 2009.