Patent ID: 6574042
Filing Date: 2003-06-03
Classification: G02B,G03B,H04N

Abstract:
An autostereoscopic image-forming device having n viewpoints, said device including a lens array comprising cylindrical lenticles disposed side by side and having longitudinal axes parallel to a first direction perpendicular to an optical axis of the device, the device including a cylindrical optical assembly comprising at least one cylindrical lens whose longitudinal axis is perpendicular to the first direction and to said optical axis, the lens array including n cylindrical lenticles, wherein the lens array and the cylindrical optical assembly share a common focusing plane, and wherein the absolute value of the ratio between the focal length of the cylindrical optical assembly and the focal length of the lenticles of the lens array is substantially equal to n, said device also comprising at least one converging element causing light rays parallel to said optical axis or coming from a given point situated on said optical axis, and passing through the centers of the lenticles of the lens array to converge on a common convergence point, and also comprising a coupling device with a transfer optical system so arranged that said common convergence point is situated in the entrance pupil of said transfer optical system.