Dolby 3D
Encyclopedia
Dolby 3D is a marketing name for a system from Dolby Laboratories, Inc.
Dolby Laboratories
Dolby Laboratories, Inc. , often shortened to Dolby Labs, is an American company specializing in audio noise reduction and audio encoding/compression.-History:...

 to show three-dimensional motion pictures
3-D film
A 3-D film or S3D film is a motion picture that enhances the illusion of depth perception...

 in a digital cinema
Digital cinema
Digital cinema refers to the use of digital technology to distribute and project motion pictures. A movie can be distributed via hard drives, optical disks or satellite and projected using a digital projector instead of a conventional film projector...

.

Technology

Dolby 3D uses a Dolby Digital Cinema projector that can show both 2D and 3D films. For 3D presentations, an alternate color wheel is placed in the projector. This color wheel contains one more set of red, green, and blue filters in addition to the red, green, and blue filters found on a typical color wheel. The additional set of three filters are able to produce the same color gamut as the original three filters, but transmit light at different wavelengths. Glasses with complementary dichroic filters
Dichroic filter
A dichroic filter, thin-film filter, or interference filter is a very accurate color filter used to selectively pass light of a small range of colors while reflecting other colors. By comparison, dichroic mirrors and dichroic reflectors tend to be characterized by the color of light that they...

 in the lenses are worn, which filter out either one or the other set of three light wavelengths. In this way, one projector can display the left and right stereoscopic images simultaneously. This method of stereoscopic projection is called wavelength multiplex visualization. The dichroic filters in the Dolby 3D glasses are more expensive and fragile than the glasses technology used in circular polarization systems like RealD Cinema and are not considered disposable. However, an important benefit of Dolby 3D in comparison with RealD is that Dolby 3D works with conventional projection screen
Projection screen
A projection screen is an installation consisting of a surface and a support structure used for displaying a projected image for the view of an audience. Projection screens may be permanently installed, as in a movie theater; painted on the wall; or semi-permanent or mobile, as in a conference room...

s.

See also

  • 3-D film
    3-D film
    A 3-D film or S3D film is a motion picture that enhances the illusion of depth perception...

  • Digital 3D
    Digital 3D
    Digital 3D is a non-specific 3D standard in which films, television shows, and video games are presented and shot in digital 3D technology or later processed in digital post-production to add a 3D effect....

  • Digital cinema
    Digital cinema
    Digital cinema refers to the use of digital technology to distribute and project motion pictures. A movie can be distributed via hard drives, optical disks or satellite and projected using a digital projector instead of a conventional film projector...

  • Digital cinematography
    Digital cinematography
    Digital cinematography is the process of capturing motion pictures as digital images, rather than on film. Digital capture may occur on video tape, hard disks, flash memory, or other media which can record digital data. As digital technology has improved, this practice has become increasingly common...

  • IMAX
    IMAX
    IMAX is a motion picture film format and a set of proprietary cinema projection standards created by the Canadian company IMAX Corporation. IMAX has the capacity to record and display images of far greater size and resolution than conventional film systems...

  • Infitec
    Infitec
    Infitec GmbH is a German company that specializes in 3-dimensional technology. It owns a technique for channel separation in stereo projection based on interference filters...

     — the technology used by Dolby 3D.
  • Movie theater
    Movie theater
    A movie theater, cinema, movie house, picture theater, film theater is a venue, usually a building, for viewing motion pictures ....

  • Dolby Laboratories
    Dolby Laboratories
    Dolby Laboratories, Inc. , often shortened to Dolby Labs, is an American company specializing in audio noise reduction and audio encoding/compression.-History:...

  • RealD Cinema
  • XpanD 3D
    XpanD 3D
    XPAND 3D is a brand name of a system for presenting three-dimensional films in a digital cinema, home theater, video games and other applications. XPAND utilizes active-shutter 3D glasses...

  • MasterImage 3D
    MasterImage 3D
    MasterImage 3D is a company that develops stereoscopic 3D systems for theaters and auto-stereoscopic 3D displays for mobile devices.-Technology:...


External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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