Light ray modulation element having multiple viewpoint units, glasses and 3D display system

A light-ray modulating element, wherein the light-ray modulating element is applied to a 3D displaying system, the 3D displaying system comprises a 3D displaying device, and the 3D displaying device comprises a display panel, and a lens unit disposed at a light exiting side of the display panel;

• wherein light rays emitted by the display panel pass through the lens unit, are shot to the light-ray modulating element, and form two first viewpoint units at a light entering side of the light-ray modulating element, each of the first viewpoint units comprises at least two first viewpoints;
• and
• the light-ray modulating element is configured for converging light rays emitted by each of the first viewpoint units to form a second viewpoint unit, so that all of viewpoints of the second viewpoint unit enter a corresponding single-eye pupil at a same time, wherein the second viewpoint unit comprises at least two second viewpoints;
• wherein the light-ray modulating element comprises a plurality of light-ray modulating units, and each of the light-ray modulating units is configured for converging light rays emitted by the first viewpoints to form the second viewpoints, so that the second viewpoints enter the corresponding single-eye pupil;
• and quantities of the first viewpoints, the second viewpoints and the light-ray modulating units are equal.