ZScreen

ZScreen is a push-pull electro-optical liquid crystal modulator that is placed immediately in front of the projector lens or computer screen to alternately polarize the light from each video frame. It circularly polarizes the frames clockwise for the right eye and counterclockwise for the left eye.

The RealD 3D system now showing in theaters is using the ZScreen that was invented by Lenny Lipton.

See also

• RealD Cinema
• RealD
• Lenny Lipton
• StereoGraphics

Patents

• "Enhanced ZScreen modulator techniques" US patent 7477206, issued January 13, 2009, assigned to RealD
• "Polarizing modulator for an electronic stereoscopic display" US patent 6975345, issued December 13, 2005, assigned to StereoGraphics Corporation
• "Stereoscopic motion picture projection system" US patent 5481321, issued January 2, 1996, assigned to Lenny Lipton
• "Achromatic liquid crystal shutter for stereoscopic and other applications" US patent 4884876, issued December 5, 1989, assigned to Lenny Lipton
• "Method and system employing a push-pull liquid crystal modulator" US patent 4792850, issued December 20, 1988, assigned to StereoGraphics Corporation
• "Stereoscopic television system" US patent 4523226, issued January 19, 1983, assigned to StereoGraphics Corporation

External links

• Dolby Digital 3D vs Real D / Master image systems Video Technology Blog
• Who is Lenny Lipton? About Inventor and Chief technical officer of RealD through 2008