Display module with the divergence angle of outgoing beam constrained again by the corresponding deflection aperture

A display module with a divergence angle of an outgoing beam constrained again by a corresponding deflection aperture, comprising:

• a multi-view display structure arranged for a single eye of a viewer, comprising a display screen and a light-splitting device, wherein the light-splitting device guides light beams from different subpixel groups on the display screen to corresponding viewing zones, respectively, and subpixels of a same group are arranged throughout the display screen, and light beams from at least adjacent 3 subpixels are respectively guided to different viewing zones;a deflection-aperture array composed of deflection apertures, which respectively correspond to different viewing zones, wherein, each deflection aperture guides the projected light beams from the corresponding subpixel group, which corresponds to the viewing zone being corresponded by this deflection aperture, to transmit to the observing zone for the eye through deflecting an incident light beam, wherein, the deflection aperture corresponding to each viewing zone consists of N>2 sub-deflection apertures, which respectively allows N kinds of mutually different orthogonal characteristic lights to be deflected out, and the subpixel group corresponding to each viewing zone is divided into N sub-subpixel groups, which correspond to these N sub-deflection apertures in an one-to-one manner, and each sub-subpixel group only projects light of orthogonal characteristic capable of being deflected out by the corresponding sub-deflection aperture, and the orthogonal projection of a sub-deflection aperture on the plane perpendicular to the eye's visual direction is smaller than 2.5 mm along all directions, wherein at least two sub-deflection apertures from different viewing zones are turned on at a time point;
• and
• a control device connected with the multi-view display structure for refreshing the display screen, wherein the information displayed by a subpixel at a time point is a projection information of a scene to be displayed along a projection direction of the subpixel,
• wherein the projection direction of the subpixel is the propagation direction of a light beam which is from the subpixel and reaches the observing zone for the eye,
• wherein for a displayed object point, at least one passing-through light beam is guided into the pupil of the eye,
• wherein the light-splitting device is a single lenticular grating consisting of one-dimensional aligned cylindrical lenses, or a slit grating, or a microstructure array composed of microstructures, or a converging structure when a backlit-type display device with a backlight-source assembly is adopted,
• wherein said microstructures correspond to the subpixels of display screen in a one-to-one manner, and each microstructure deflects the propagation direction of the incident or exit beam to or from the corresponding subpixel, to guide light beams from a or subpixel group to the corresponding viewing zone, and
• wherein said backlight-source assembly projects a plurality of backlights sequentially, and said converging structure converges backlights to different viewing zones, with a backlight corresponding to only a viewing zone at a time point.