Optical: systems and elements – Projection screen – Unitary sheet comprising plural refracting areas
Patent
1996-01-16
1998-11-17
Malley, Daniel P.
Optical: systems and elements
Projection screen
Unitary sheet comprising plural refracting areas
359443, 359456, 359458, 355 22, G09G 336
Patent
active
058384944
ABSTRACT:
This invention relates to a stereoscopic image display apparatus which allows an observer to recognize a stereoscopic image, and has a lenticular lens sheet constituted by arranging a plurality of lenticular lenses, and a display unit for sequentially arranging and displaying, on a rear surface portion of the lenticular lens sheet, bundles each including n stripe images which are obtained by dividing n parallax images from different view points into a plurality of stripe images, and bundling corresponding stripe images constituting the respective parallax images. When the deviation amount of the central position of each of the lenticular lenses and the central position of the bundle of stripe images is given by .gamma.(t-r)/(2D0) (where K is the assumed interval between two eyes of the observer, D0 is the optimal stereoscopic viewing distance, t is the thickness of the lenticular lens sheet, and r is the radius of curvature of the lenticular lens) at an end portion of an image displayed by the display unit, the apparatus satisfies 0<.gamma.<1.
REFERENCES:
patent: 4959641 (1990-09-01), Bass et al.
patent: 5019855 (1991-05-01), Lam
patent: 5349419 (1994-09-01), Taguchi et al.
patent: 5371627 (1994-12-01), Baccei et al.
Canon Kabushiki Kaisha
Malley Daniel P.
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