Patent ID: 7064895

Claim:
A stereoscopic image display apparatus for allowing an observer to observe a stereoscopic image by guiding image light onto a predetermined observation plane, comprising: an image display element for displaying a synthesized parallax image by synthesizing stripe images for a left eye and stripe images for a right eye by alternately arranging the stripe images for a left eye and the stripe images for a right eye in a vertical direction, the stripe images for a left eye being a plurality of horizontally elongated images obtained by dividing a parallax image for a left eye and the stripe images for a right eye being a plurality of horizontally elongated images obtained by dividing a parallax image for a right eye; a mask member including a plurality of openings and a plurality of shield regions; a second optical system for converging light incoming from said image display element onto said mask member; and a first optical system for converging light incoming from said mask member onto the predetermined observation plane, wherein said second optical system includes a first lens array in which a plurality of first lenticular lenses are periodically arranged in a vertical direction and a second lens array in which a plurality of second lenticular lenses are periodically arranged in a horizontal direction, and wherein optical characteristics of the first lens array in a vertical direction and optical characteristics of the second lens array in a horizontal direction are different from each other.