Patent ID: 7522340

Claim:
An image display apparatus comprising: a backlight unit where a reflection panel is installed at a bottom thereof; a polarization panel which transmits only light of a particular polarization direction of light emitted from the backlight unit; a polarization switch which changes polarization direction of light incident upon the polarization switch; a birefringent element array which is formed by alternately arranging a plurality of first and second birefringent elements and changes polarization direction of light incident upon the first and second birefringent elements respectively to make polarization directions of light passing through the first and second birefringent elements perpendicular to each other; a reflection polarizer panel which transmits only light of a particular polarization direction of light passing through the birefringent element array and reflects light of the other polarization direction of the light passing through the birefringent element array; a lens array which separates light incident upon the lens array into a first view zone and a second view zone; and a display panel which displays an image.