Liquid crystal projection display system

A projection display system comprising:

• (a) a light source that generates non-polarized light having at least a first color component and a second color component;
• (b) at least one color selection device that selectively transmits at different times said second color component and said at least one color selection device transmits said first color component;
• (c) at least four polarized light modulators, two of said light modulators each generating a respective image associated with a respective polarization state of said first color component, and two of said light modulators each generating a respective image associated with a respective polarization state of said second color component;
• and
• (d) a projection lens for projecting said images from said polarized light modulators.

A projection display system, comprising:

• (a) a light source that generates non-polarized light having a plurality of color components;
• (b) a color selection device that selectively transmits different ones of said plurality of color components at different times;
• (c) a polarization separator having a first optical path for light based upon the combination of at least the color of the light and a first polarization state of the light and a second optical path for light based upon the combination of at least the color of the light and a second polarization state of the light, each of said optical paths producing respective images for each of said plurality of color components;
• and
• (d) a projection lens for projecting said images.

A method for projecting color images, comprising:

• (a) generating light that has at least two polarization states and a first color component, a second color component, and a third color component;
• (b) selectively transmitting at different times said second and third color components, and transmitting said first color component;
• (c) generating a respective image associated with each respective polarization state of said first color component, and generating at different times a respective image associated with each respective polarization state of said second and third color components simultaneously with at least one of said respective image associated with each respective polarization state of said first color component;
• and
• (d) projecting said images through a projection lens.