Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 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. The company is the only current purveyor of active/shutter glass S3D for movie theaters with over 1000 cinemas currently using this technology. The XpanD 3D system is arranged to alternately flash the images for each eye at high speed. The viewer wears electronic glasses whose LCD lenses alternate between clear and opaque to admit only the correct image at the correct time for each eye. An invisible infrared signal is broadcast in the auditorium which is picked up by electronics in the glasses to synchronize the shutter effect.

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