Patent ID: 6839095
Filing Date: 2005-01-04
Classification: G03B

Abstract:
1. A frame-sequential color (“FSC”) video display apparatus, comprising: a light source to propagate polychromatic light; an aspherical corrector lens to focus the polychromatic light through a color modulation device in order to propagate FSC light, said color modulation device including a selected one of a color wheel or a liquid crystal-based color switching device; an aspherical lens to receive the FSC light from the color modulation device and to substantially collimate the FSC light; a flyseye lens array to receive the FSC light from the aspherical lens and to substantially homogenize the FSC light; a plate-type transflective polarizing beam splitter to receive the FSC light from the flys-eye lens array, to transmit rays of the FSC light polarized in a first polarization direction, and to reflect rays of the FSC light polarized in a second polarization direction; and a reflective liquid crystal light valve to receive the FSC light polarized in the first polarization direction, the reflective liquid crystal light valve including pixels selectively switchable between first and second states such that pixels switched to the first state reflect the FSC light in the first polarization direction back through the transflective polarizing beam splitter, and pixels switched to the second state reflect the FSC light in the second polarization direction for reflection off the transflective polarizing beam splitter as image bearing light.