Patent ID: 7474466
Filing Date: 2009-01-06
Classification: G02B,H04N

Abstract:
1. A stereoimage display apparatus comprising: an erecting-unmagnifying lens module including a plurality of microlenses, arranged uniformly with a fixed pitch, and having a focusing distance; and a display device including an image display screen, separated from the erecting-unmagnifying lens module by the focusing distance, and a plurality of pixels, arranged uniformly with a fixed pitch, wherein the image display screen displays an image, wherein: wherein the erecting-unmagnifying lens module includes: at least two lens array plates, each lens array plate including a plurality of microlenses, each having an optical axis and a peak, wherein: wherein if PD represents the pixel pitch of the plurality of pixels, PL represents the lens pitch of the microlenses arranged uniformly with a fixed pitch, LA represents the distance between a viewpoint and the image display screen, LB represents the distance between the stereoimage and the viewpoint, Lz represents the distance between the erecting-unmagnifying lens module and the image display screen, and PLo represents the correction lens pitch obtained by correcting the lens pitch PL in accordance with the distances LA, LB, and Lz, and when the distance Lz is minimal, the correction lens pitch PLo satisfies the expression of: where n=0, 1, 2, 3, . . . .