CN117319629A - Super-multi-view naked eye three-dimensional display device, system and method based on time division multiplexing - Google Patents

Abstract

The invention relates to the technical field of three-dimensional display, in particular to a super-multi-view naked eye three-dimensional display device, a system and a method based on time division multiplexing, wherein the device comprises a display panel for displaying images, a cylindrical lens array and a cylindrical lens array controller; the cylindrical lens array is arranged right in front of the display panel, the image plane of the display panel coincides with the focal plane of the cylindrical lens, and the cylindrical lens array controller is electrically connected with the cylindrical lens array; the cylindrical lens array controller is used for controlling the cylindrical lens array to move unidirectionally for a preset distance at each preset moving time node, and when the unidirectional movement of the cylindrical lens array reaches preset times, the cylindrical lens array controller controls the cylindrical lens array to return to an initial position and circulates the unidirectional movement process; the lenticular array moves in the direction of the extension of the bottom edge of the lenticular array parallel to the image plane. The device provided by the invention has the advantages of small volume, light weight and easiness in integration, and can realize high-resolution naked eye three-dimensional display.

Description

Super-multi-view naked eye three-dimensional display device, system and method based on time division multiplexing

Technical Field

The invention relates to the technical field of three-dimensional display, in particular to a super-multi-view naked eye three-dimensional display device, system and method based on time division multiplexing.

Background

With the development of technology, three-dimensional display technology is gradually applied to various scenes. The naked eye three-dimensional display technology can enable people to see three-dimensional images without wearing any equipment, and has wide application prospect.

In the prior art, the technology for realizing naked eye three-dimensional display mainly comprises an auto-stereoscopic display technology based on a slit grating and a cylindrical lens grating and a super-multi-view naked eye three-dimensional display technology. The auto-stereoscopic display technology based on the slit grating and the lenticular grating utilizes the principle of binocular parallax, slightly different images are respectively projected into the left eye and the right eye of a person, and the three-dimensional effect is felt by the person by utilizing the principle of synthesizing parallax images by the brain of the person. The conventional autostereoscopic display technique has a disadvantage in that visual fatigue is easily generated to a user because the angle at which human eyes rotate converges is different from the focusing distance.

In the prior art, the technology of supermulti-view naked eye three-dimensional display requires two or more view points to enter the same eye. At this time, the human eyes can focus on the three-dimensional object in the space, and due to the huge requirement of the number of the super-multi-view points, people usually use directional backlight sources, eye tracking and other technologies to realize the super-multi-view points, and the directional backlight source technology needs a plurality of light emitting sources distributed at different space positions. The light emitted from the light source is collimated by an optical element such as a lens, and is incident on the front transparent display panel. The directions of the light rays emitted by the light emitting sources at different positions are different. The human eye tracking technology is utilized to lock the position of human eyes, and then the corresponding directional backlight source is controlled to emit light, so that the image is accurately transmitted into the human eyes. The method has the defects of complicated and huge backlight source equipment, precise eye tracking equipment, complicated use and high cost.

Another approach is to project multiple projectors onto the same diffuser film. The projectors need to be spatially arranged according to a certain rule. One for each projector. Therefore, in order to meet the requirement of super-multiple viewpoints, a plurality of projection apparatuses are required. The method has the defects of huge size, difficult debugging, high price and the like. Another approach is to design the display panel. A plurality of subpixels of the same color are arranged in a row, and each three rows of subpixels form a pixel island. Each row of pixels is 1/3 sub-pixels different from the previous row of pixels. The number of views can be increased by the design, and the moire generated in the non-luminous area between the sub-pixels is eliminated. There is still a drawback that the resolution is reduced due to the complex design of the display pixels required and still being essentially a kind of spatial multiplexing.

Disclosure of Invention

First, the technical problem to be solved

In view of the above-mentioned shortcomings and disadvantages of the prior art, the present invention provides a super multi-view naked eye three-dimensional display device, system and method based on time division multiplexing, which can solve the technical problems of low resolution, small viewing range and large saw tooth influence.

(II) technical scheme

In order to achieve the above object, in a first aspect, the present invention provides a super multi-view naked eye three-dimensional display device based on time division multiplexing, where the device includes:

a display panel for displaying an image, a lenticular array, and a lenticular array controller;

the cylindrical lens array is arranged right in front of the display panel, the image plane of the display panel is overlapped with the focal plane of the cylindrical lens, and the position of the cylindrical lens array relative to the display panel is taken as an initial position;

the cylindrical lens array controller is electrically connected with the cylindrical lens array; the cylindrical lens array controller is used for controlling the cylindrical lens array to move unidirectionally for a preset distance at each preset moving time node, and when the unidirectional movement of the cylindrical lens array reaches the preset unidirectional movement times, the cylindrical lens array controller controls the cylindrical lens array to return to an initial position and circulates the unidirectional movement process;

the lenticular array moves along the direction of the extension line of the bottom edge of the lenticular array parallel to the image plane.

Optionally, the moving time node of the lenticular array coincides with the time node at which the display panel refreshes an image.

Optionally, the display panel includes a plurality of pixels, each pixel including three sub-pixels of red, green and blue.

Optionally, the preset distance is d= (a+1/B) ×w _p ；

The a=floor (p/(b×w) _p ) Floor () is a round-down function; b is the preset unidirectional movement times, wp is the width of one sub-pixel, and p is the intercept of the cylindrical lens array.

Alternatively, the response speed of the display panel and the lenticular lens array is b×60Hz.

Optionally, the lenticular array controller is electrically connected to the lenticular array.

In a second aspect, the present invention further provides a super multi-viewpoint naked eye three-dimensional display system based on time division multiplexing, which comprises an upper computer and the three-dimensional display device according to any one of the first aspect;

the upper computer is respectively and electrically connected with the display panel of the three-dimensional display device and the lenticular array controller;

the upper computer is used for synchronously controlling the display panel to refresh images and controlling the displacement of the lenticular lens array by the lenticular lens array controller.

In a third aspect, the present invention further provides a method for three-dimensional display of a supermultiple viewpoint naked eye, including:

s1, acquiring an initial view point number and a main view field width generated when a cylindrical lens array and a display panel are at an initial position;

wherein the lenticular lens array is arranged right in front of the display panel; the image plane of the display panel is coincident with the focal plane of the lenticular lens array; the position of the lenticular lens array relative to the display panel is taken as an initial position; the initial viewpoint number is the viewpoint number generated by the cylindrical lens array at the initial position; the width of the main view field is the width of the view field generated when the display panel and the cylindrical lens array are at the initial position;

s2, calculating and obtaining a first distance of single movement of the cylindrical lens array based on a preset minimum adjacent viewpoint distance, a main view field width and an initial viewpoint number;

s3, controlling the cylindrical lens array to move along the direction of an extension line by a first distance based on the first distance and a preset moving time node, wherein the extension line is an extension line of the bottom edge of the cylindrical lens array parallel to the image plane;

the cylindrical lens array moves unidirectionally for a first distance at each preset moving time node;

and S4, when the one-way movement of the cylindrical lens array reaches the preset times, controlling the cylindrical lens array to return to the initial position, and executing the step S3.

Alternatively, the first distance is d= (a+1/B) ×w _p ；

The a=floor (p/(b×w) _p ) Floor () is a round-down function; b is the preset unidirectional movement times, wp is the width of one sub-pixel, and p is the intercept of the cylindrical lens array.

Optionally, the number of unidirectional movements of the lenticular array does not exceed the maximum number of unidirectional movements of the lenticular array;

the maximum number of unidirectional movements is the ratio of the maximum number of views to the initial number of views;

the maximum viewpoint number is obtained by calculating the width of the main view field and the preset minimum adjacent viewpoint distance in advance;

the preset minimum adjacent viewpoint distance is less than 1.5mm.

(III) beneficial effects

According to the super-multi-view naked eye three-dimensional display device, the system and the method based on time division multiplexing, which are provided by the invention, the number of view points is increased by utilizing the display screen with high refresh rate and the fast movable lenticular lens array, so that the view points entering human eyes can be increased, the resolution of images reaching the human eyes is high, and the display range is large. And because the cylindrical lens array can move rapidly, the sawtooth phenomenon caused by that the continuous images are divided into small parallelograms by the cylindrical lens due to the fact that the cylindrical lens array and the display panel form a certain angle can be reduced, gaps between the sawteeth can be filled by other sawtooth images, and the watching effect is good.

The three-dimensional display device provided by the invention has the advantages that the thickness of the device combined by the display screen with high refresh rate and the column lens array capable of moving rapidly is not different from that of a common two-dimensional display, and the volume is light.

Drawings

Fig. 1 is a schematic structural diagram of a supermulti-view naked eye three-dimensional display device according to an embodiment of the present invention.

Fig. 2 (a) is a schematic view of an initial viewpoint according to an embodiment of the present invention.

Fig. 2 (b) is a schematic diagram illustrating movement of a first moving time node according to an embodiment of the present invention.

Fig. 2 (c) is a schematic diagram illustrating movement of a second moving time node according to an embodiment of the present invention.

Fig. 2 (d) is a schematic diagram illustrating movement of a third moving time node according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a moving mode of a lenticular lens array according to an embodiment of the present invention.

Fig. 4 is a schematic diagram comparing the effects of the system according to the embodiment of the present invention with those of the prior art.

Fig. 5 is a schematic diagram illustrating a movement principle of a lenticular lens array according to an embodiment of the present invention.

Fig. 6 is a schematic view of a time division multiplexing implementation of a supermulti-view naked eye three-dimensional display view distribution according to an embodiment of the present invention.

[ reference numerals description ]

100: a display panel; 200: a lenticular lens array; 300: and a lenticular array controller.

Detailed Description

In order that the above-described aspects may be better understood, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In the three-dimensional display technology, a principle of binocular parallax is mostly utilized, namely, images with slightly different positions of left and right eyes of a person in space are seen, and two images can be synthesized into a three-dimensional image with depth information through the brain of the person. Therefore, the existing multi-view naked eye three-dimensional display adopts a technology capable of separating a plurality of parallax images and respectively projecting slightly different images into left and right eyes of a person so that the person can feel a three-dimensional effect to realize naked eye three-dimensional display. However, since the multi-view technique allocates pixels on the display screen to different views, the resolution is reduced by multiple times, and for example, a 4-view display reduces the lateral resolution to 1/4 of the original resolution. And because the distance that the angle that human eye rotated gathers is different with the distance of focusing, lets people's visual fatigue easily.

The existing super-multi-view naked eye three-dimensional display technology adopts two or more view points to enter the same eye, so that visual fatigue is reduced, the smoothness of display depth of field and motion parallax is improved, however, the defects of serious reduction of resolution and reduction of viewing range are caused by the very dense view points required by the super-multi view points. Therefore, the application provides a super-multi-view naked eye three-dimensional display system based on time division multiplexing, referring to fig. 1, fig. 1 is a schematic structural diagram of a super-multi-view naked eye three-dimensional display device provided by an embodiment of the invention. As shown in fig. 1, the apparatus includes:

a display panel 100 for displaying an image, a lenticular array 200 capable of rapid movement, a lenticular array controller 300; the cylindrical lens array is arranged opposite to the display panel, the cylindrical lens array is arranged right in front of the display panel, and the image plane of the display panel is arranged on the focal plane of the cylindrical lens array; the distance between the display panel and the lenticular lens array is the focal length of the lenticular lens array, and the position of the lenticular lens array relative to the display panel at the moment is taken as an initial position.

The images displayed by the display panel are composite images formed by rearranging and combining parallax images according to a certain rule, and various arrangement and combination modes can be selected according to actual requirements.

In practical applications, the display needs as high a resolution and refresh rate as possible.

The lenticular array controller may include the necessary mechanical structure or driving circuitry for controlling the precise displacement of the lenticular array, etc.

For example, in one embodiment, the lenticular array controller mainly includes a control circuit and necessary mechanical structures, and in another embodiment, the lenticular array controller may be a control circuit without mechanical structures.

The lenticular array controller is electrically connected with the lenticular array.

In practical application, the lenticular lens array can be a fast response liquid crystal lenticular lens array prepared from liquid crystal, or a mechanically movable lenticular lens array, and the display panel can be selected from a Liquid Crystal Display (LCD), an OLED, a Micro-LED, and the like.

In the embodiment shown in fig. 1, the display panel is an LCD panel, and the display panel is composed of a plurality of pixels, each pixel includes three red, green and blue sub-pixels, where the width of each sub-pixel is Wp. The focal length of the lenticular lens, i.e. the distance between the display panel and the lenticular lens, is g. The intercept of the cylindrical lens unit is p. The angle between the lenticular lens and the display panel is d. The lenticular lens array is arranged opposite to the display panel, and when the lenticular lens array and the display panel are at a relatively static initial position, the initial view point number N=4 is generated.

Further, the lenticular array controller is configured to control the lenticular array to move unidirectionally by a preset distance at a preset movement time node, and when the lenticular array moves to reach a preset unidirectional movement number B, the lenticular array controller controls the lenticular array to return to an initial position and circulate the unidirectional movement process. For example, at the first moving time node, the lenticular lens array starts from the initial position and moves a first distance in a preset direction, at the second moving time node, the lenticular lens array continues to move a first distance in the preset direction, and when the number of times of moving in the preset direction reaches the preset number of times of moving, the lenticular lens array returns to the initial position, and then the unidirectional moving process is circulated.

The lenticular array moves along the direction of the extension line of the bottom edge of the lenticular array parallel to the image plane.

The moving time node of the lenticular lens array is consistent with the time node of refreshing the image of the display panel.

The process of rapidly moving the lenticular lens array is called a dynamic scene, and the horizontal relative position between the lenticular lens and the pixels of the display panel is moved, so that the position of the viewpoint in space is displaced. It can be known that the total number Nr of viewpoints finally displayed in the dynamic scene has a multiple relationship with the initial viewpoint N in the static scene:

nr=n×b. B is a natural number greater than 1.

To explain the above-described apparatus in more detail, in one embodiment, the number of viewpoints is arranged in the same row of sub-pixels, and the lenticular elements will cover N sub-pixels. Fig. 2 (a) to (d) are combined, fig. 3, and fig. 2 (a) to (d) are schematic diagrams of movement principles of the lenticular lens array at different movement time nodes in the embodiment of fig. 1. Fig. 3 is a schematic diagram of a moving mode of a lenticular lens array according to an embodiment of the present invention.

As shown in fig. 2 (a), at an initial time (time 1) before the first movement time node, the display panel is relatively stationary with respect to the lenticular array, at which time the display panel displays the first composite image, and the lenticular array produces N viewpoints. At the first movement time node (time 2), the horizontal position between the lenticular lens array and the display panel is moved by a distance d= (a+1/B) ×w _p . Where a may take any integer value. In this embodiment, it is preferable that D is close to the value of p/B, in which case a=floor (p/(b×w) _p ) Floor () is a round down function. Here the closer D is to p/B the better.

The lenticular array continues to move unidirectionally the same distance, and the position distribution of the viewpoint in space will also move the same distance. And when the first time node is moved, switching the composite image on the display screen to a second composite image. At this point, another N viewpoints are generated. At the second moving time node, the horizontal relative position between the cylindrical lens and the pixels of the display panel is 1/B×W _p The position of the viewpoint in space is displaced by 1/b×t until the movement is performed to the preset number of unidirectional movements B times. The misalignment between the lenticular lens and the sub-pixels will then return to the value at the initial instant before the first time of movement node. So far, all views will be divided into BThe times occur chronologically once in space.

The persistence of vision of the human eye is normally 0.1s. When the switching speed is fast enough, the display requirement of the super-multiple view points can be achieved in a time division multiplexing mode by utilizing the principle of human eye persistence. It is therefore required that the response time of the display panel and the response time of the lenticular array not exceed 0.1/B seconds.

In practice, it is known that a display with a refresh rate of 60Hz is required to display a smooth two-dimensional dynamic picture. Therefore, the response speed of the display panel and the lenticular lens array applied in the present system is not lower than b×60Hz. In this way, the number of views will be increased to B times the number of original views. The distance between the viewpoints will also be reduced to 1/B of the original. By the method of the embodiment, the viewing range is enlarged by a factor of B on the premise that the distance between the initial viewpoints is unchanged.

In practical application, the device uses a time division multiplexing technology to uniformly disperse the view points in space. The greater the number of time division multiplexing, the higher the requirement for the moving speed of the display panel and lenticular lens array. The current highest refresh rate of the current commercial display panel can reach 240Hz, so in a system applying a display panel with 240Hz refresh rate, the maximum number of unidirectional movements is 4, and if there is a display panel with a higher refresh rate, there is also a larger maximum number of unidirectional movements.

In practical application, the distance between the viewpoints after multiplexing may be larger than the distance between pupils of human eyes due to limitation of hardware configuration conditions, etc., and the effect of increasing the number of viewpoints may be achieved although the viewing effect of super-multiple viewpoints cannot be generated.

Further, in the device provided by the invention, the cylindrical lens array moves rapidly in the preset direction to generate a multiplied viewpoint, so that the distance between adjacent saw teeth is reduced by the same multiple, the distance between the saw teeth is smaller than the range which can be distinguished by human eyes, the influence caused by the saw tooth phenomenon is reduced, and referring to fig. 4, fig. 4 is a schematic diagram of comparing the saw tooth effect of the system provided by the embodiment of the invention with that of the prior art. In multi-view three-dimensional display, due to the beam splitting of the lenticular lens arrayThe resolution of the display is usually reduced to 1/N, where N is the number of viewpoints in a static scene where the lenticular array and the display panel remain relatively stationary. The image seen by the human eye is actually made up of pixels of the size of the lenticular elements. Because the lenticular lens array forms a certain angle with the display panel, the continuous image is divided into small parallelograms by the lenticular lenses, the jaggies are more obvious at the edges of the image, the continuity and definition of the image are destroyed, and the distance R=p between adjacent jaggies is kept in a static scene where the lenticular lens array and the display panel are relatively static ₀ /sin alpha, where p ₀ Is the period of the cylindrical lens. Since p=p ₀ Cos α, thus r=p/tan α. At this time, a remarkable serration phenomenon occurs when the angle is within a certain range. R refers to the distance between images displayed by two adjacent subpixels of the same column.

According to the device, the cylindrical lens array moves rapidly in the preset direction, multiple viewpoints are generated, the distance between adjacent saw teeth is reduced by the same multiple, the distance between the saw teeth is smaller than the range which can be distinguished by human eyes, the saw tooth phenomenon is effectively reduced, and the viewing experience is good.

The invention also provides a super-multi-view naked eye three-dimensional display system based on time division multiplexing, which comprises an upper computer and any three-dimensional display device; the upper computer is respectively and electrically connected with the display panel of the three-dimensional display device and the lenticular array controller; the upper computer is used for synchronously controlling the display panel to refresh images and controlling the displacement of the lenticular lens array by the lenticular lens array controller.

In addition, the invention also provides a super-multi-view naked eye three-dimensional display method, which mainly comprises the following steps:

s1, acquiring an initial view point number and a main view field width generated when the lenticular lens array and the display panel are at an initial position.

Wherein the lenticular lens array is arranged right in front of the display panel; the image plane of the display panel is coincident with the focal plane of the lenticular lens array; the position of the lenticular lens array relative to the display panel is taken as an initial position; the initial viewpoint number is the viewpoint number generated by the cylindrical lens array at the initial position; the width of the main view field is the width of the view field generated when the display panel and the cylindrical lens array are at the initial position, and the viewing effect of the main view field is optimal.

S2, calculating and obtaining a first distance of single movement of the cylindrical lens array based on a preset minimum adjacent viewpoint distance, a main view field width and an initial viewpoint number.

And S3, controlling the cylindrical lens array to move along the direction of an extension line by a first distance based on the first distance and a preset moving time node, wherein the extension line is an extension line of the bottom edge of the cylindrical lens array parallel to the image plane.

The lenticular array moves unidirectionally a first distance at each preset movement time node.

The first distance is D= (A+1/B) x W _p . Where a may take any integer value. In this embodiment, it is preferable that D is close to the value of p/B, in which case a=floor (p/(b×w) _p ) Floor () is a round down function. Here the closer D is to p/B the better.

And S4, when the one-way movement of the cylindrical lens array reaches the preset times, controlling the cylindrical lens array to return to the initial position, and executing the step S3.

Wherein the number of unidirectional movements of the lenticular array does not exceed the maximum number of unidirectional movements of the lenticular array.

The maximum number of unidirectional movements is the ratio of the maximum number of views to the initial number of views.

The maximum viewpoint number is obtained by calculating the width of the main view field and the preset minimum adjacent viewpoint distance in advance.

Since the pupil of the human eye is about 3mm. In order to meet the requirement of supermultiple view, two or more view points need to enter the same eye, so the preset minimum adjacent view point distance is at least less than 1.smm.

In the above embodiment, the number of views is increased by multiple through time division multiplexing, so that the requirement of the super-multiple view on the number of views can be reduced. The problems of low super multi-view resolution, small display range and the like are solved.

The moving time node of the lenticular lens array is consistent with the time node of refreshing the image of the display panel.

In order to better illustrate the above technical solution, a description will be made herein with reference to a specific embodiment.

Example 1

In this example, a display panel of 27 inches 4K resolution 240Hz high refresh rate LCD display is selected, the resolution of the display is 3840 x 2160, and the width of each sub-pixel is 53.819 microns. The lenticular lens array in this embodiment is a liquid crystal cell filled with liquid crystal E7, and the surface of the liquid crystal lenticular lens is provided with an indium tin oxide conductive layer. Specifically, the lenticular lens array is a fast response liquid crystal lenticular lens array, the liquid crystal box comprises two glass substrates with the area of 27 inches and the thickness of 1.1mm, the size of the glass substrates is the same as that of a display panel, and one glass substrate is respectively ultrasonically cleaned in acetone, isopropanol and ethanol solutions for 20min in an ultrasonic cleaning tank. And after the cleaning is finished, drying by using an air gun for standby. A 100nm conductive layer of Indium Tin Oxide (ITO) was evaporated onto the glass substrate. And (3) making a strip electrode structure on the ITO glass substrate by using an ultraviolet lithography technology. And carrying out orientation treatment on the other side of the glass substrate, namely spin-coating an orientation layer on the other side of the glass substrate, wherein the orientation layer is made of polyimide. The spin coater was at 2500rad/min. The spin-coating time is preferably 30s. Baking for 1 hour at 200 ℃ in an oven after the spin coating is finished. And after cooling to room temperature, taking out the glass for rubbing orientation treatment. The other glass substrate is subjected to only an orientation treatment. The thickness of the liquid crystal cell is controlled to be 50 micrometers by using a plastic gasket, and the liquid crystal cell is driven to form a cylindrical lens by applying an alternating current with a voltage of 50Vpp to the liquid crystal cell, as shown by a schematic diagram of the movement principle of the cylindrical lens array in FIG. 5, so that the liquid crystal cylindrical lens can be rapidly and transversely moved by continuously changing the driven electrodes.

The width of the main view field of the display panel adopted in this embodiment is 120mm, the focal length of the lenticular lens is 30.634mm, the minimum adjacent view point distance is preferably 1mm, and the designed super multi-view point display comprises 120 view points, namely, the maximum view point number is 120. The minimum adjacent viewpoint distance is smaller than the size of the pupil of the human eye, and the three-dimensional picture can be viewed comfortably by one person. The optimal viewing distance is 2.4m. In a static scene, the display has 30 viewpoints. At the initial time, the generated viewpoints are 1, 5, 9, … …, 109, 113, 117, respectively. At the first travel time node, the resulting viewpoints are 2, 6, 10 … …, 110, 114, 118, respectively. And so on, until all the viewpoints are displayed, the next cycle is performed, as shown in fig. 6. In this example, the number of time division multiplexing is 4, i.e., the maximum number of unidirectional movements is 4, and 1 frame of image is displayed on the display screen at a time. The images of each frame are images synthesized by 30 parallax images according to a certain rule.

The display panel displays content in synchronization with the movement of the lenticular array. Preferably, in an embodiment, an FPGA is selected as the lenticular array controller to synchronize the driving of the lenticular array with the display tile source. And each time 1 frame of image is displayed, the FPGA outputs a driving voltage to correspondingly drive the liquid crystal column lens array. And finishing one cycle until the 4 frames of images are played.

The device, the system and the method for the super-multi-view naked eye three-dimensional display based on time division multiplexing, provided by the invention, have the advantages that the cylindrical lens array is arranged to be capable of moving rapidly, and the difficulty of mutual restriction among the view angle, the display resolution and the view point spacing under the static scene that the cylindrical lens array and the display panel keep relatively static is overcome. For example, increasing the number of views results in a reduced resolution of the display. Without changing the number of views, the need to have a distance between adjacent views smaller than the pupil of the person (about 3 mm) would lead to the disadvantage of reduced angle of view. The device uses time multiplexing to disperse the views to different spatial positions in time sequence. The number of vision points is increased in multiple by combining with the principle of vision persistence of human eyes. When the viewpoint density is sufficiently high, the effect of super-multiple viewpoints can be produced. In addition, the sawtooth effect will be greatly reduced due to the high speed movement of the cylindrical lens. The device can realize high-resolution three-dimensional display by only one display panel and a movable cylindrical lens array, and has the advantages of small volume, light weight, easy integration and the like.

In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.

Claims (8)

1. A super multi-view naked eye three-dimensional display device based on time division multiplexing, characterized in that the three-dimensional display device comprises:

a display panel for displaying an image, a lenticular array, and a lenticular array controller;

the cylindrical lens array is arranged right in front of the display panel, the image plane of the display panel is overlapped with the focal plane of the cylindrical lens, and the position of the cylindrical lens array relative to the display panel is taken as an initial position;

the cylindrical lens array controller is electrically connected with the cylindrical lens array;

the cylindrical lens array controller is used for controlling the cylindrical lens array to move unidirectionally for a preset distance at each preset moving time node, and when the unidirectional movement of the cylindrical lens array reaches the preset unidirectional movement times, the cylindrical lens array controller controls the cylindrical lens array to return to an initial position and circulates the unidirectional movement process;

the lenticular array moves along the direction of the extension line of the bottom edge of the lenticular array parallel to the image plane.

2. The three-dimensional display device of claim 1,

the moving time node of the lenticular lens array is consistent with the time node of refreshing the image of the display panel.

3. The three-dimensional display device of claim 1,

the display panel includes a plurality of pixels, each pixel including three sub-pixels of red, green and blue.

4. The three-dimensional display device of claim 3,

the preset distance is D= (A+1/B) multiplied by W _p ；

The a=floor (p/(b×w) _p ) Floor () is a round-down function; b is the preset unidirectional movement times, wp is the width of one sub-pixel, and p is the intercept of the cylindrical lens array.

5. The three-dimensional display device of claim 1,

the response speed of the display panel and the lenticular lens array is B×60Hz.

6. A super multi-view naked eye three-dimensional display system based on time division multiplexing, which is characterized by comprising an upper computer and the three-dimensional display device according to any one of the claims 1 to 5;

the upper computer is respectively and electrically connected with the display panel of the three-dimensional display device and the lenticular array controller;

the upper computer is used for synchronously controlling the display panel to refresh images and controlling the displacement of the lenticular lens array by the lenticular lens array controller.

7. The supermulti-view naked eye three-dimensional display method is characterized by comprising the following steps of:

s1, acquiring an initial view point number and a main view field width generated when a cylindrical lens array and a display panel are at an initial position;

the cylindrical lens array is arranged right in front of the display panel; the image plane of the display panel is coincident with the focal plane of the lenticular lens array; the position of the lenticular lens array relative to the display panel is taken as an initial position; the initial viewpoint number is the viewpoint number generated by the cylindrical lens array at the initial position; the width of the main view field is the width of the view field generated when the display panel and the cylindrical lens array are at the initial position;

s2, calculating and obtaining a first distance of single movement of the cylindrical lens array based on a preset minimum adjacent viewpoint distance, a main view field width and an initial viewpoint number;

s3, controlling the cylindrical lens array to move along the direction of an extension line by a first distance based on the first distance and a preset moving time node, wherein the extension line is an extension line of the bottom edge of the cylindrical lens array parallel to the image plane;

the cylindrical lens array moves unidirectionally for a first distance at each preset moving time node;

and S4, when the one-way movement of the cylindrical lens array reaches the preset times, controlling the cylindrical lens array to return to the initial position, and executing the step S3.

8. The three-dimensional display method according to claim 7,

the number of unidirectional movements of the lenticular array does not exceed the maximum number of unidirectional movements of the lenticular array;

the maximum number of unidirectional movements is the ratio of the maximum number of views to the initial number of views;

the maximum viewpoint number is obtained by calculating the width of the main view field and the preset minimum adjacent viewpoint distance in advance;

the preset minimum adjacent viewpoint distance is less than 1.5mm.