Stereoscopic image projection system

A liquid crystal display projection system for pictures that can be viewed stereoscopically, comprising:

• means for supplying a repetitive three color sequence of light;
• first and second imagers responsive to respective drive signals representative of the same picture from different angles of view;
• at least a first polarizing beam splitter for separating said repetitive three-color sequence of light into a P polarized three color sequence of light and an S polarized three color sequence of light, said S polarized three color sequence of light illuminating said first imager and said P polarized three color sequence of light illuminating said second imager;
• a first filter for removing P polarized light directed to said first imager;
• and,
• a second filter for removing P polarized light reflected from said second imager,
• wherein said light reflected from said first imager and said light filtered by said second filter form a stereoscopic image when viewed through respective P and S polarizing lenses;
• wherein the at least first polarizing beam splitter comprises four polarizing beam splitters including the first polarizing beam splitter, a second polarizing beam splitter for directing S polarized light split from the first polarizing beam splitter toward the second imager, a third polarizing beam splitter for directing S polarized light reflected from the first imager towards a fourth polarizing beam splitter, wherein the fourth polarizing beam splitter directs S polarized light reflected from the first imager and P polarized light from the second imager towards the projection lens;
• and
• wherein the system further comprises a first quarter wave plate between the third polarizing beam splitter and the first imager and a second quarter wave plate between the second polarizing beam splitter and the second imager.