Patent ID: 7834903

Claim:
A stereoscopic display device comprising: a display device comprising red, green, and blue pixels, the pixels being disposed within a display plane and arranged in a matrix having a lateral pixel pitch and a vertical pixel pitch, wherein the vertical pixel pitch of the matrix is three times the lateral pixel pitch of the matrix; a beam controlling element disposed in front of the display device, the beam controlling element: comprising one of a plurality of apertures or a plurality of lenses having an optical opening portion extending linearly in a vertical direction, and controlling beam directions from the pixels to form elemental images corresponding to the respective apertures or lenses of the beam controlling element; and a diffusion layer having a haze of 20 or more to 70 or less, the diffusion layer being arranged between the display device and the beam controlling element, wherein the red, green, and blue pixels are alternately arranged in a lateral direction in the same row; the red, green, and blue pixels are alternately arranged in a vertical direction in the same column; an average value of pitches of the elemental images is larger than 9n (n=1, 2, 3 . . .) times the lateral pixel pitch; and a lateral pitch of the apertures or lenses is equal to 9n times the lateral pixel pitch.