Patent ID: 6462871
Filing Date: 2002-10-08
Classification: G02B,H04N

Abstract:
An image display apparatus for allowing observation of image information, comprising:a light source device; a mask pattern which has line patterns each obtained by repetitively arranging Nâˆ’1 or N light-shielding portions with respect to one aperture portion in a horizontal direction, and has sets each of which includes N line patterns shifted from each other in the horizontal direction by a width of the aperture portion, and which are repetitively arranged in the vertical direction; a first lenticular lens formed by arranging a plurality of cylindrical lenses, having refractive power in the horizontal direction, at a predetermined pitch in the horizontal direction; a second lenticular lens formed by arranging a plurality of cylindrical lenses, having refractive power in the vertical direction, at a predetermined pitch in the vertical direction; and a display for displaying image information, said display being illuminated by a light beam which is emitted by said light source device, transmitted through the plurality of aperture portions, and passes through said first and second lenticular lenses, and the image information having a horizontal stripe synthesized image obtained by respectively dividing N images into a plurality of horizontal stripe images, and repetitively arranging the divided horizontal stripe images in a predetermined order in correspondence with the N images at a predetermined pitch in the vertical direction; wherein N&gE;3 and, wherein said first and second lenticular lenses serve to make a light beam coming from one point of the aperture portion of said mask pattern reach a surface of said display to be converted into a collimated light beam in the horizontal direction and to be substantially focused in the vertical direction.