Abstract: The invention discloses an optical-waveguide display module with multiple light sources, including a light-source array of timing-orthogonal-characteristic, a relay device, a display device of orthogonal-characteristic, an optical waveguide device, a converging device, a control device, and other components. The light-source array of timing-orthogonal-characteristic includes more than one orthogonal-characteristic light sources. All orthogonal-characteristic light sources are switched on and off in each time cycle sequentially, with only one orthogonal-characteristic light source being switched on at a time-point of each time cycle. By designing the spatial distribution of converging spots of lights from different orthogonal-characteristic light sources, one two-dimensional image is projected into the pupil of the viewer in each time cycle, which realizes VAC-free three-dimensional display based on Maxwellian view technology or More-than-one-view-one-pupil technology.

Abstract: The present invention relates to the field of three-dimensional display technology, and more specifically, to a glasses-free light-field display method based on asymmetric light distribution of a projecting beam. In the method described in this patent application, beam projected by a pixel or a sub-pixel of a display device is guided to the corresponding pixel-viewing-zone or sub-pixel-viewing-zone of an asymmetric shape, by a corresponding modulation element. Based on these asymmetric pixel-viewing-zones or sub-pixel-viewing-zones, viewing zones for different pixel groups or sub-pixel groups are designed with different arrangement densities along different directions, to realize glasses-free light-field display with a reduced number of viewing zones. Time multiplexing is further introduced for presenting more viewing zones.

Abstract: The invention discloses a near-eye display module which includes at least one projection module, a bracing structure, and a control unit, releasing the eye's focus from a fixed plane. A projection module consists of more than one projection units, and the bracing structure functions as a holder for these projection units. A projection unit includes a display panel, a converging device which converges the light beams incident onto or outgoing from the display panel, and a deflection aperture which deflects the light coming from the converging device. The viewer wears two such near-eye display modules as eye-glasses. In the near-eye display module corresponding to an eye, the projection units of a same projection module jointly project at least one whole image to this eye, for VAC-free (Convergence-Accommodation conflict-free) three dimensional (3D) display based on Maxwellian view or multiple-images-one-eye.

Abstract: The invention discloses a three-dimensional display module using optical wave-guide for providing directional backlights. This display module includes a wave-guide backlight unit with time-sequential directional light sources, a display device, a wavefront modulation device or a light splitting device, and other components. The wave-guide backlight unit with time-sequential directional light sources includes a sequential-switching light-source array, a relay device, and an optical wave-guide device. Each light source of the sequential-switching light-source array provides backlight of corresponding vector characteristics to the display device, making optical message displayed by the display device being guided to the corresponding viewing zone/viewing zones. Through the technology routes of multiple-view-for-one-pupil or/and Maxwellian view, the three-dimensional display module implements displays free from the vergence-accommodation conflict.

Abstract: The invention discloses a near-eye display module based on pixel-block-aperture structures, which includes more than one pixel-block-aperture structures. The divergence angle and propagation direction of the light beam from a pixel is specially modulated, and the light beams from pixels of adjacent pixel-block-aperture structures are endowed with different orthogonal characteristics, to guarantee the light beam from a pixel transmitting to the viewer's pupil only through corresponding aperture(s) for Maxwellian View or one-pupil-multi-view display. The arrangement of multiple pixel-block-aperture structures makes a large field of view (FOV) realizable, and the orthogonal-characteristics design can suppress the crosstalk between adjacent pixel-block-aperture structures effectively.

Abstract: The invention discloses a display module with the divergence angle of an outgoing beam constrained again by the corresponding deflection aperture, which includes a multi-view display structure, a deflection-aperture array and a control device. The multi-view display structure includes a display screen, a light-splitting device, and a backlight-source assembly for providing backlights when a backlit-type display screen is adopted. The light-splitting device guides light beams from each group of pixels or sub-pixels to the corresponding viewing zone. A deflection aperture with a small size is designed for constraining the divergence angle of deflected light beams. Multiple deflection apertures play the function of enlarging the field of view, which is very limited when only a single deflection aperture exists.

Abstract: The invention discloses a three-dimensional display method for large field of view and small viewing-zone interval. A display screen constructed by sub-screens with adjacent ones emitting lights of different exclusive optical characteristics is employed, and sequentially-switching aperture-arrays are placed close to a pupil of the viewer. M apertures of an aperture array correspond to the M sub-screens by a one-to-one manner in turn, to make the transmittance of each aperture to the light from the corresponding sub-screen be greater than that to the lights from the adjacent non-corresponding sub-screens by a ratio larger than 9. The corresponding apertures of a sub-screen in different aperture-arrays are arranged with an interval not larger than the diameter of the pupil. At a time-point, only one aperture-array gets open, and all aperture-arrays get open sequentially at different time-points of a time-period.

Abstract: The invention discloses a near-eye display module which includes at least one projection module, a bracing structure, and a control unit, releasing the eye's focus from a fixed plane. A projection module consists of more than one projection units, and the bracing structure functions as a holder for these projection units. A projection unit includes a display panel, a converging device which converges the light beams incident onto or outgoing from the display panel, and a deflection aperture which deflects the light coming from the converging device. The viewer wears two such near-eye display modules as eye-glasses. In the near-eye display module corresponding to an eye, the projection units of a same projection module jointly project at least one whole image to this eye, for VAC-free (Convergence-Accommodation conflict-free) three dimensional (3D) display based on Maxwellian view or multiple-images-one-eye.

Abstract: The invention discloses a three-dimensional display method for large field of view and small viewing-zone interval. A display screen constructed by sub-screens with adjacent ones emitting lights of different exclusive optical characteristics is employed, and sequentially-switching aperture-arrays are placed close to a pupil of the viewer. M apertures of an aperture array correspond to the M sub-screens by a one-to-one manner in turn, to make the transmittance of each aperture to the light from the corresponding sub-screen be greater than that to the lights from the adjacent non-corresponding sub-screens by a ratio larger than 9. The corresponding apertures of a sub-screen in different aperture-arrays are arranged with an interval not larger than the diameter of the pupil. At a time-point, only one aperture-array gets open, and all aperture-arrays get open sequentially at different time-points of a time-period.

Abstract: The invention discloses a three-dimensional display method based on spatial superposition of sub-pixels' emitted beams. Taking sub-pixels of a display device as the basic display units, sub-pixels that emitting beams of the same color are taken as a sub-pixel group or divided into several sub-pixel groups. Through a beam control device, the sub-pixel groups project more than one image of the target object to a same pupil of the viewer. Passing through a displayed spatial point, more than one beam from sub-pixels of different colors superimpose into a color spatial light spot, where the mosaic of sub-pixels of different colors is employed to present surface-distributed color pixel. The beam control device guides the beam from each sub-pixel to the viewing zone corresponding to a sub-pixel group that contains the sub-pixel, along a special direction and with a constrained divergence angle.

Abstract: The invention discloses a three-dimensional display module using optical wave-guide for providing directional backlights. This display module includes a wave-guide backlight unit with time-sequential directional light sources, a display device, a wavefront modulation device or a light splitting device, and other components. The wave-guide backlight unit with time-sequential directional light sources includes a sequential-switching light-source array, a relay device, and an optical wave-guide device. Each light source of the sequential-switching light-source array provides backlight of corresponding vector characteristics to the display device, making optical message displayed by the display device being guided to the corresponding viewing zone/viewing zones. Through the technology routes of multiple-view-for-one-pupil or/and Maxwellian view, the three-dimensional display module implements displays free from the vergence-accommodation conflict.

Abstract: The invention features techniques for presenting more than one perspective views to each eye of the viewer, through generating viewing zones with an interval smaller than the diameter of the viewer's pupil by display panel/grating pair/pairs. In the first method, the arraying direction of the small-interval viewing zones is designed having an appropriate small inclination angle to the line connecting the viewer's two pupils, so as to cover each eye with more than one viewing zones which are different with each other. In the extreme case, 4 small-interval viewing zones can implement 3D display with two views for each eye. This is absolutely different with existing grating-based 3D display, which aligns viewing zones along the direction with a small angle (<?/4) to the line connecting the viewer's two pupils and thus a rather large number of small-interval viewing zone is needed for covering the viewer's two eyes.

Abstract: The invention features techniques and systems for presenting two or more perspective views to each eye of the viewer, through division multiplexing of the viewer's entrance-pupil. The system is constituted by a selective-aperture array with each aperture being transparent only to light beams with some special characteristics, at least one display screen for optical information presentation, and other optional elements. The optical message on at least one display screen propagates to the selective-aperture array directly, or be directed to the selective-aperture array or the eye of the viewer by other optional elements. Through selective filtering by the apertures with temporal filtering characteristics or exclusive filtering characteristics, multiple perspective views get presented to an eye of the viewer through the selective-aperture array.

Abstract: The invention features techniques for presenting more than one perspective views to each eye of the viewer, through generating viewing zones with an interval smaller than the diameter of the viewer's pupil by display panel/grating pair/pairs. In the first method, the arraying direction of the small-interval viewing zones is designed having an appropriate small inclination angle to the line connecting the viewer's two pupils, so as to cover each eye with more than one viewing zones which are different with each other. In the extreme case, 4 small-interval viewing zones can implement 3D display with two views for each eye. This is absolutely different with existing grating-based 3D display, which aligns viewing zones along the direction with a small angle (<?/4) to the line connecting the viewer's two pupils and thus a rather large number of small-interval viewing zone is needed for covering the viewer's two eyes.

Abstract: The invention features techniques and systems for presenting two or more perspective views to each eye of the viewer, through division multiplexing of the viewer's entrance-pupil. The system is constituted by a selective-aperture array with each aperture being transparent only to light beams with some special characteristics, at least one display screen for optical information presentation, and other optional elements. The optical message on at least one display screen propagates to the selective-aperture array directly, or be directed to the selective-aperture array or the eye of the viewer by other optional elements. Through selective filtering by the apertures with temporal filtering characteristics or exclusive filtering characteristics, multiple perspective views get presented to an eye of the viewer through the selective-aperture array.

Abstract: The invention features a multi-view display system based on planar- or circular-aligned light-restricted projection units. A light-restricted projection unit is constituted by a display panel, a directional imaging structure transmitting optical messages from the display panel along a specific direction, and baffles encasing the display panel/directional imaging structure pair for light blocking. During operation, all the light-restricted projection units project images to a common display zone. Each light-restricted projection unit generates two kinds of zones: VZ where light rays from all pixels of the display panel pass and PVZ where light rays from partial pixels of the display panel pass. With the light-restricted projection units being aligned closely, PVZs from different light-restricted projection units completely or partially overlap into a fusing zone (FZ). For each point in the FZ, light rays from pixels belonging to segments of different display panels pass.