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

Lenny Lipton

Leonard "Lenny" Lipton is a well known author, filmmaker and stereoscopic vision system inventor.Lipton wrote the lyrics to the song Puff the Magic Dragon as a 19-year-old at Cornell University. He graduated from Cornell University where he majored in physics. The song was a hit in 1963 for Peter...

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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