CN221101259U - Multi-view display system - Google Patents

Abstract

The application discloses a multi-view display system, comprising: a projection screen; wherein, the light-emitting surface of the projection screen is provided with a diffusion layer; the diffusion layer comprises a plurality of microstructure units, wherein the extending direction of each microstructure unit is a first direction, the second direction is perpendicular to the first direction, and the characteristic dimension of each microstructure unit along the first direction is larger than the characteristic dimension along the second direction; the diffusion layer comprises a first direction diffusion angle and a second direction diffusion angle; the projector unit is arranged on one side of the light incident surface of the projection screen and comprises at least two projectors; wherein, a plurality of projectors are used for showing different view scenes; the included angle formed by the projection light rays of any two projectors is larger than the first direction diffusion angle of the diffusion layer. The application can meet the multi-view requirement and realize the peep-proof effect, thereby meeting the diversified viewing requirement.

Description

Multi-view display system

Technical Field

The application relates to the field of display, in particular to a multi-view display system.

Background

Due to the rapid development of optical technology, many display devices have been gradually applied to daily life. Among them, the projection device has the advantage of large-sized display, and is regarded as an important development trend of the display device.

In the prior art, a projection device is that a viewer and a projector are located at two sides or the same side of a projection screen, and a projection light transmitted or reflected from the projection screen by the projector is used for viewing an image.

However, although the projection screen has a larger viewing angle, viewers at different positions still view the same picture through the projection screen, and cannot view a plurality of projection pictures which are not mutually influenced by the viewers at different positions, so that the requirement of diversified viewing cannot be met.

Disclosure of utility model

The application mainly solves the technical problem of providing a multi-view display system, which can solve the problem that the conventional projection equipment cannot meet the diversified viewing requirements.

In order to solve the above technical problems, one technical solution adopted by the present application is to provide a multi-view display system, including: a projection screen; wherein, the light-emitting surface of the projection screen is provided with a diffusion layer; the diffusion layer comprises a plurality of microstructure units, wherein the extending direction of each microstructure unit is a first direction, the second direction is perpendicular to the first direction, and the characteristic dimension of each microstructure unit along the first direction is larger than the characteristic dimension along the second direction; the diffusion layer comprises a first direction diffusion angle and a second direction diffusion angle; the projector unit is arranged on one side of the light incident surface of the projection screen and comprises at least two projectors; wherein, a plurality of projectors are used for showing different view scenes; the included angle formed by the projection light rays of any two projectors is larger than the first direction diffusion angle of the diffusion layer.

Wherein, the diffusion angle of the first direction is 0-10 degrees, and the diffusion angle of the second direction is 0-60 degrees.

The diffusion layer comprises a plurality of microstructure units which are arranged in a staggered manner, and no fixed interval exists among the microstructure units; wherein the microstructure units are mountain-shaped, and the cross section of each microstructure unit in the plane of the projection screen is elliptical or spindle-shaped; wherein the major axis of the ellipse or spindle is parallel to the first direction and the minor axis of the ellipse or spindle is parallel to the second direction.

The microstructure units are different in corresponding characteristic size, and the characteristic sizes are randomly changed and accord with Gaussian distribution; wherein the feature size includes a major axis, a minor axis, and a thickness.

Wherein the average length of the long axes of the microstructure units is 10-1000 micrometers; the average ratio of the major axis to the minor axis of the microstructure units is 1:1-1000:1; the average thickness of the plurality of microstructure elements is 2 to 10 microns.

The projection screen comprises a projection screen body, wherein a light-emitting surface of the projection screen is provided with a cylindrical grating, and a diffusion layer is arranged on the cylindrical grating.

Wherein the prismatic period of the cylindrical grating is greater than the feature size of the plurality of microstructure elements in the diffusion layer.

Wherein the prism period is less than or equal to a preset value.

Wherein the projection screen is a transmission type screen; the light-emitting surface and the light-entering surface are two side surfaces which are oppositely arranged.

Wherein the projection screen is a reflective screen; wherein the light-emitting surface and the light-entering surface are the same surface.

The beneficial effects of the application are as follows: compared with the prior art, the multi-view display system provided by the application has the advantages that the projector set comprising at least two projectors is arranged, and a plurality of different view scenes can be formed on the projection screen through the plurality of projectors, so that viewers at different positions can watch different projection pictures, and the multi-view requirement is met; meanwhile, a diffusion layer comprising a plurality of microstructure units is arranged on the light-emitting surface of the projection screen, and the diffusion angle of the projection picture is controlled through the diffusion layer, so that the same projection picture can form larger contrast at different viewing positions, a viewer can be ensured to view the corresponding projection picture only in the viewing positions corresponding to different viewpoint scenes, and the peep-proof effect is realized; further, by enabling the included angle formed by the projection light rays of any two projectors to be larger than the first direction diffusion angle of the diffusion layer, crosstalk among a plurality of projection pictures can be eliminated, so that mutual influence among the plurality of projection pictures is avoided, and diversified viewing requirements are met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a first embodiment of a multi-view display system according to the present application;

FIG. 2 is a schematic illustration of the horizontal diffusion effect of the projection screen of FIG. 1;

FIG. 3 is a microstructure view of the diffusion layer of FIG. 1;

FIG. 4 is a contour diagram of the diffusion layer of FIG. 1;

FIG. 5 is a schematic diagram of a structure of a second embodiment of the multi-view display system of the present application;

FIG. 6 is a schematic diagram of a structure of a third embodiment of a multi-view display system according to the present application;

fig. 7 is an enlarged schematic view of an embodiment of the projection screen a in fig. 6.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The projection screen has a large viewing angle, but viewers at different positions can view the same picture through the projection screen, so that the viewers at different positions cannot view a plurality of projection pictures which are not mutually influenced, and the requirement of diversified viewing cannot be met.

Based on the above situation, the application provides a multi-view display system, which can solve the problem that the conventional projection equipment cannot meet the requirement of diversified viewing.

The multi-view display system provided by the application comprises: a projection screen; wherein, the light-emitting surface of the projection screen is provided with a diffusion layer; the diffusion layer comprises a plurality of microstructure units, wherein the extending direction of each microstructure unit is a first direction, the second direction is perpendicular to the first direction, and the characteristic dimension of each microstructure unit along the first direction is larger than the characteristic dimension along the second direction; the diffusion layer comprises a first direction diffusion angle and a second direction diffusion angle; the projector unit is arranged on one side of the light incident surface of the projection screen and comprises at least two projectors; wherein, a plurality of projectors are used for showing different view scenes; the included angle formed by the projection light rays of any two projectors is larger than the first direction diffusion angle of the diffusion layer. Through setting up the projector unit, can form a plurality of different viewpoint scenes on projection screen through a plurality of projectors to the viewer of messenger's different positions sees different projection pictures, thereby satisfies the requirement of looking more. Meanwhile, a diffusion layer comprising a plurality of microstructure units is arranged on the light-emitting surface of the projection screen, and the diffusion angle of the projection picture is controlled through the diffusion layer, so that the same projection picture can form larger contrast at different viewing positions, a viewer can be ensured to view the corresponding projection picture in a preset viewing position corresponding to different viewpoint scenes, and the peep-proof effect is realized. Further, by enabling the included angle formed by the projection light rays of any two projectors to be larger than the first direction diffusion angle of the diffusion layer, crosstalk among a plurality of projection pictures can be eliminated, so that mutual influence among the plurality of projection pictures is avoided, and diversified viewing requirements are met.

For illustrating a specific structure of the multi-view display system of the present application, please refer to fig. 1, fig. 1 is a schematic diagram of a first embodiment of the multi-view display system of the present application.

In this embodiment, the multi-view display system 100 includes a projection screen 10 and a projector set 20. The light emitting surface 12 of the projection screen 10 is provided with a diffusion layer (not shown), the diffusion layer includes a plurality of microstructure units, an extending direction of each microstructure unit is a first direction, a second direction is perpendicular to the first direction, a feature size of each microstructure unit along the first direction is larger than a feature size along the second direction, and the diffusion layer includes a first direction diffusion angle α and a second direction diffusion angle. The projector set 20 is disposed on one side of the light incident surface 11 of the projection screen 10, and includes a first projector 21 and a second projector 22. Wherein the first projector 21 and the second projector 22 are used for showing different view scenes. The included angle γ formed by the projection light of the first projector 21 and the projection light of the second projector 22 is larger than the first direction diffusion angle α.

In the present embodiment, the projection screen 10 is a transmissive screen, the light-emitting surface 12 and the light-entering surface 11 are opposite side surfaces, and the projection light beams of the first projector 21 and the second projector 22 are emitted to the light-entering surface 11 of the projection screen 10 and are emitted from the light-emitting surface 12 of the projection screen 10, and the first projector 21, the second projector 22, the first viewing position 31, and the second projector 22 are respectively located at two sides of the projection screen 10.

In the present embodiment, the first direction is the horizontal direction of the projection screen 10, that is, the left-right direction of the projection screen. The second direction is the vertical direction of the projection screen 10, i.e., the up-down direction of the projection screen.

In this embodiment, the projection screen 10 achieves a diffusion effect of projection light by a plurality of microstructure units in the diffusion layer. The first direction diffusion angle α is a horizontal diffusion angle of the diffusion layer, which is defined as a 1/2 peak where the horizontal luminance distribution decreases. The second direction diffusion angle is the vertical diffusion angle of the diffusion layer, which is defined as the 1/2 peak where the vertical luminance distribution decreases.

The viewing angles comprise horizontal directions and vertical directions, the horizontal directions are directions of multi-viewing angle distribution, namely, distribution directions of different viewing positions, and the vertical directions are directions of height distribution, namely, distribution directions of different heights.

The first viewing position 31 and the second viewing position 32 are distributed along the horizontal direction, and the first viewing position 31 is located in a range of a first direction diffusion angle α formed by the projection light of the first projector 21 being diffused through the projection screen 10, and the second viewing position 32 is located in a range of a first direction diffusion angle α formed by the projection light of the second projector 22 being diffused through the projection screen 10.

Wherein the first viewing position 31 is for viewing a first projection screen formed by the first projector 21 on the projection screen 10 and the second viewing position 32 is for viewing a second projection screen formed by the second projector 22 on the projection screen 10. The first projection picture and the second projection picture are different projection pictures.

Specifically, referring to fig. 2, fig. 2 is a schematic view of the horizontal diffusion effect of the projection screen in fig. 1. For the first projection picture, the viewing brightness of the first viewing position 31 is between the peak value and 1/2 peak value, the viewing brightness of the second viewing position 32 is significantly lower than 1/2 peak value, the viewer can see the clearer first projection picture at the first viewing position 31, and the first projection picture cannot be seen at the second viewing position 32. Similarly, for the second projection screen, the viewing brightness of the second viewing position 32 is between the peak value and 1/2 peak value, the viewing brightness of the first viewing position 31 is significantly lower than 1/2 peak value, and the viewer can see the second projection screen which is clearer at the second viewing position 32, and cannot see the second projection screen at the first viewing position 31.

In some embodiments, the first direction diffusion angle α is 0 to 10 °, and the second direction diffusion angle is 0 to 60 °. Wherein the projection screen is substantially invisible beyond the extent of the first direction diffusion angle α in the horizontal direction (i.e., beyond the first viewing position 31 or the second viewing position 32) or beyond the extent of the second direction diffusion angle in the vertical direction (i.e., too short or too tall).

It can be appreciated that the range of the first direction diffusion angle α is smaller, so that multi-view distribution can be well realized in the horizontal direction, and the range of the second direction diffusion angle is larger, so that the viewing requirements of viewers with different heights can be met.

It can be understood that, because different projection pictures generate larger contrast at different viewing positions, a viewer can be ensured to be in the viewing positions corresponding to different viewpoint scenes to view the corresponding projection pictures, thereby not only meeting the multi-view requirement, but also protecting the privacy requirement of the viewer and realizing the peep-proof effect.

In this embodiment, the diffusion layer of the projection screen 10 includes a plurality of microstructure units arranged in a staggered manner, wherein the microstructure units are peak-shaped, and a cross-sectional shape of each microstructure unit in a plane of the projection screen 10 is elliptical or spindle-shaped. Wherein the major axis of the ellipse or spindle is parallel to the first direction and the minor axis of the ellipse or spindle is parallel to the second direction.

Specifically, referring to fig. 3 and 4, fig. 3 is a microstructure of the diffusion layer in fig. 1, and fig. 4 is a contour diagram of the diffusion layer in fig. 1.

In this embodiment, the feature sizes of the microstructure units are different, and the feature sizes are randomly changed and conform to gaussian distribution. Wherein the feature size includes a major axis, a minor axis, and a thickness. The diffusion effect of the microstructure units of the diffusion layer is elliptical gaussian diffusion, namely, the light distribution in the horizontal direction and the vertical direction accords with the gaussian distribution characteristic, and the distribution characteristic of the short axis in the characteristic dimension corresponds to the distribution characteristic in the macroscopic horizontal direction.

The characteristic dimension of each microstructure unit along the first direction is a long axis, and the characteristic dimension of each microstructure unit along the second direction is a short axis.

In some embodiments, the average length of the major axes of the plurality of microstructure elements is from 10 to 1000 microns, the average ratio of the major axes to the minor axes of the plurality of microstructure elements is from 1:1 to 1000:1, and the average thickness of the plurality of microstructure elements is from 2 to 10 microns.

In some embodiments, the plurality of microstructure elements are arranged without fixed spacing between them, without periodic features, and exhibit macroscopically no periodic boundaries. It will be appreciated that the random staggered arrangement may prevent periodic bright spots from occurring on the screen, thereby improving the display of the projection screen 10.

In some embodiments, the projection screen 10 has a haze of greater than 70% and preferably does not allow the projector to see its brightness. The projection screen 10 has a screen transmittance of greater than 80% to allow better projection light to exit.

In the present embodiment, an included angle γ formed by the projection light of the first projector 21 and the projection light of the second projector 22 is larger than the first direction diffusion angle α. In a specific implementation scenario, the diffusion layer has a first direction diffusion angle α of 4 °, and the angle γ formed by the projected light rays of the first projector 21 and the second projector 22 is 60 °. In another specific implementation scenario, the diffusion layer has a first direction diffusion angle α of 7 ° and the angle γ formed by the projected light rays of the first projector 21 and the second projector 22 is 65 °.

In the prior art, light diffusion is generally realized through complex grating, lens and other structures, and partition display is realized through arranging a plurality of sub-screens on a projection screen, so that crosstalk between different pictures is eliminated.

Compared with the prior art, the present embodiment can control the diffusion angle of the projection screen through the diffusion layer, and can eliminate the crosstalk between the first projection screen and the second projection screen by making the included angle γ formed by the projection light of the first projector 21 and the projection light of the second projector 22 larger than the first direction diffusion angle α, so as to avoid the mutual influence between the plurality of projection screens, avoid the need of partition setting, and reduce the volume of the projection screen 10, thereby reducing the design difficulty and the manufacturing cost of the multi-view display system 100.

Further, in the present embodiment, when the angles between the projection light beams of the first projector 21 and the second projector 22 meet the requirement, the projection light beams can be placed at will along the horizontal direction, and only the first projection image or the second projection image projected on the projection screen 10 needs to be ensured to be a normal image at the first viewing position 31 or the second viewing position 32, and no obvious distortion or distortion is required.

In the present embodiment, the first projector 21 and the second projector 22 may be any of a forward projection projector, a short-focus projector, and an ultra-short-focus projector, or may be a specially designed projector, and the present application is not limited to this.

It can be appreciated that the present embodiment has almost no requirements on the type and distribution position (such as the distance between the two projectors, the distance between the two projectors and the projection screen, and the angle of the incident light), and the same display effect can be achieved when the incident light is incident from any angle when the included angle formed by the projection light of any two projectors is larger than the first direction diffusion angle of the diffusion layer, so that the multi-view display system 100 has higher flexibility and versatility.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a multi-view display system according to a second embodiment of the application.

In this embodiment, the multi-view display system 200 includes a projection screen 10 and a projector set 20. The light emitting surface 12 of the projection screen 10 is provided with a diffusion layer (not shown), wherein the diffusion layer includes a first direction diffusion angle and a second direction diffusion angle, and the first direction is perpendicular to the second direction. The projector set 20 is disposed on one side of the light incident surface 11 of the projection screen 10, and includes a first projector 21 and a second projector 22. Wherein the first projector 21 and the second projector 22 are used for showing different view scenes. The included angle γ formed by the projection light of the first projector 21 and the projection light of the second projector 22 is larger than the first direction diffusion angle.

Only the differences between the present embodiment and the above embodiment will be described below.

In this embodiment, the projection screen 10 is a reflective screen. The light emitting surface 12 and the light entering surface 11 are the same surface, and the first projector 21 and the second projector 22 are located on the same side of the projection screen 10 as the first viewing position 31 and the second projector 22.

The first viewing position 31 corresponds to the incident direction of the projection light of the second projector 22, and the second viewing position 32 corresponds to the incident direction of the projection light of the first projector 21.

In this embodiment, the projection screen 10 may be made of an opaque material or a transparent material, which is not limited in the present application.

In one particular implementation, projection screen 10 is an opaque material and the diffusion layer surface reflects the projection light. In another specific implementation, the projection screen 10 is made of a light-transmitting material, and a light-absorbing layer is added on the back surface (i.e., the surface on the side opposite to the light-emitting surface 12) of the screen to avoid diffuse reflection from the bottom surface.

In this embodiment, the screen reflectivity of the projection screen 10 is greater than 80%.

It can be appreciated that the multi-view display system of the present application does not limit the types of projection screens and projectors, and can flexibly adapt to different types of projection devices without redesigning elements, thereby further improving the versatility of the multi-view display system.

Referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of a third embodiment of the multi-view display system according to the present application, and fig. 7 is an enlarged schematic structural diagram of an embodiment of a projection screen a in fig. 6.

In this embodiment, the multi-view display system 300 includes a projection screen 10 and a projector set 20. The light emitting surface 12 of the projection screen 10 is provided with a diffusion layer 50, wherein the diffusion layer 50 includes a first direction diffusion angle and a second direction diffusion angle, and the first direction is perpendicular to the second direction. The projector set 20 is disposed on one side of the light incident surface 11 of the projection screen 10, and includes a first projector 21 and a second projector 22. Wherein the first projector 21 and the second projector 22 are used for showing different view scenes. The included angle γ formed by the projection light of the first projector 21 and the projection light of the second projector 22 is larger than the first direction diffusion angle.

Only the differences between the present embodiment and the above embodiment will be described below.

In the present embodiment, the light exit surface 12 of the projection screen 10 is provided with a cylindrical grating 40, and the diffusion layer 50 is provided on the cylindrical grating 40.

Specifically, the cylindrical grating 40 and the diffusion layer 50 form a composite structure, the cylindrical grating 40 is a prismatic structure, the diffusion layer 50 is a surface diffusion structure, and the size of the surface diffusion structure is smaller than that of the prismatic structure and is attached to the surface of the prismatic structure.

In some embodiments, the prismatic period of the cylindrical grating 40 is greater than the feature size of the plurality of microstructure elements in the diffusion layer 50.

In some embodiments, the prism period is greater than 3 times the average length of the long axis of the plurality of microstructure elements in the diffusion layer 50. In other embodiments, the prism period may have other values, as the application is not limited in this regard.

Wherein the prism period is less than or equal to a preset value.

In some embodiments, the preset value is 800 μm. In other embodiments, the preset value may be other values, which is not limited in the present application.

Compared with the second embodiment, the difference between the first viewing position 31 and the second viewing position 32 is that the first viewing position 31 corresponds to the incident direction of the projection light of the first projector 21, and the second viewing position 32 corresponds to the incident direction of the projection light of the second projector 22. Meanwhile, the surface diffusion structure can expand the angle range of the reflected light to obtain a larger viewing angle, and the defect that the prism structure can reflect only in a single direction is avoided, so that the phenomenon of uneven brightness distribution when a picture is large is solved, the uniformity is improved, and the viewing experience is further improved.

Compared with the prior art, the application has the advantages that the projector set comprising at least two projectors is arranged, and a plurality of different viewpoint scenes can be formed on the projection screen through a plurality of projectors, so that viewers at different positions can watch different projection pictures, and the multi-view requirement is met; meanwhile, a diffusion layer comprising a plurality of microstructure units is arranged on the light-emitting surface of the projection screen, and the diffusion angle of the projection picture is controlled through the diffusion layer, so that the same projection picture can form larger contrast at different viewing positions, a viewer can be ensured to view the corresponding projection picture only in the viewing positions corresponding to different viewpoint scenes, and the peep-proof effect is realized; further, by enabling the included angle formed by the projection light rays of any two projectors to be larger than the first direction diffusion angle of the diffusion layer, crosstalk among a plurality of projection pictures can be eliminated, so that mutual influence among the plurality of projection pictures is avoided, and diversified viewing requirements are met.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims (10)

1. A multi-view display system, comprising:

A projection screen; wherein, the light-out surface of the projection screen is provided with a diffusion layer; the diffusion layer comprises a plurality of microstructure units, wherein the extending direction of each microstructure unit is a first direction, the second direction is perpendicular to the first direction, and the characteristic dimension of each microstructure unit along the first direction is larger than the characteristic dimension along the second direction; the diffusion layer comprises a first direction diffusion angle and a second direction diffusion angle;

The projector unit is arranged on one side of the light incident surface of the projection screen and comprises at least two projectors; wherein, a plurality of projectors are used for showing different view scenes;

The included angle formed by the projection light rays of any two projectors is larger than the first direction diffusion angle of the diffusion layer.

2. The multi-view display system of claim 1, wherein the display system comprises,

The first direction diffusion angle is 0-10 degrees, and the second direction diffusion angle is 0-60 degrees.

3. The multi-view display system of claim 1, wherein the display system comprises,

The diffusion layer comprises a plurality of microstructure units which are arranged in a staggered manner, and no fixed interval exists among the microstructure units;

Wherein the microstructure units are peak-shaped, and the cross section of each microstructure unit in the plane of the projection screen is elliptical or spindle-shaped; wherein the major axis of the ellipse or the spindle is parallel to the first direction and the minor axis of the ellipse or the spindle is parallel to the second direction.

4. A multi-view display system as recited in claim 3, wherein,

The characteristic sizes corresponding to the microstructure units are different, and the characteristic sizes are randomly changed and accord with Gaussian distribution; wherein the feature size includes the major axis, the minor axis, and a thickness.

5. The multi-view display system of claim 4, wherein the display device comprises a display device,

The average length of the long axes of the microstructure units is 10-1000 micrometers;

The average ratio of the long axis to the short axis of the microstructure units is 1:1-1000:1;

The average thickness of the plurality of microstructure units is 2-10 micrometers.

6. The multi-view display system of claim 5, wherein the display device comprises a display device,

The light-emitting surface of the projection screen is provided with a cylindrical grating, and the diffusion layer is arranged on the cylindrical grating.

7. The multi-view display system of claim 6, wherein the display device comprises a display device,

The prismatic period of the cylindrical grating is greater than the feature size of the plurality of microstructure elements in the diffusion layer.

8. The multi-view display system of claim 7, wherein the display device comprises a display device,

The prism period is less than or equal to a preset value.

9. The multi-view display system of claim 1, wherein the display system comprises,

The projection screen is a transmission type screen;

The light-emitting surface and the light-entering surface are two side surfaces which are oppositely arranged.

10. The multi-view display system of claim 1, wherein the display system comprises,

The projection screen is a reflective screen;

wherein the light-emitting surface and the light-entering surface are the same surface.