| 摘要 |
The invention concerns a device for forming an autostereoscopic image containing n view points comprising a lenticular array (RL1) including cylindrical lenses (10) with longitudinal axes parallel to a direction (zz') perpendicular to an optical axis of the device (x'x). It comprises a cylindrical optical assembly whereof the longitudinal axis is perpendicular to zz' and to x'x. The lenticular array (RL1) and the cylindrical optical assembly (LC1) have a common focusing plane (P) corresponding to a focusing distance ( DELTA ). The absolute value of the ratio between the cylindrical optical assembly focal distance and that of the lenticular array is substantially equal to Kn, K being a format change coefficient. The invention also concerns a projection device, using said image forming device and a projector screening n elementary flat images and a screen equipped with at least a projection system.
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