CN211627954U - 3D display device with wide viewing angle - Google Patents

Abstract

The utility model discloses a 3D display device with wide visual angle, which comprises a backlight source, a gradually-changed pitch rectangular pinhole array, a barrier array and a display screen, wherein the ratio of the horizontal pitch to the vertical pitch of rectangular pinholes at the central position of the gradually-changed pitch rectangular pinhole array is equal to the ratio of the horizontal width to the vertical width of the gradually-changed pitch rectangular pinhole array; the horizontal pitch of the rectangular image element is the same as that of the corresponding rectangular pinhole, and the vertical pitch of the rectangular image element is the same as that of the corresponding rectangular pinhole; the barrier array comprises a plurality of barriers which are vertically arranged with the display screen and the gradient pitch rectangular pinhole array and are used for separating adjacent rectangular pinholes and corresponding rectangular image elements, and light rays penetrating through each rectangular pinhole can only illuminate the corresponding rectangular image elements for imaging.

Description

3D display device with wide viewing angle

Technical Field

The utility model relates to a 3D shows, more specifically says, the utility model relates to a 3D display device at wide visual angle.

Background

Compared with other 3D displays, such as glasses type vision-aided 3D display, helmet type vision-aided 3D display, grating 3D display, volume 3D display, holographic 3D display and the like, the integrated imaging 3D display has the advantages of continuous viewpoints, suitability for watching by multiple people, no need of vision-aided equipment and coherent light sources, simple structure, low cost and the like. Existing progressive pitch pinhole array technology can increase the viewing angle by changing the pitch of the pinholes. However, the existing gradual pitch pinhole array has the technical defects that: the number of pinholes must be odd, and only then can the pinhole with the smallest pitch be ensured to be unique, so that the viewing angle calculation formula independent of the pinhole number can be obtained. Therefore, the number of picture elements in the corresponding picture element array must be odd. The horizontal width and the vertical width of the display are not equal, so that the traditional integrated imaging 3D display has the problem of uneven resolution. In addition, the conventional integrated imaging 3D display has a problem that a horizontal viewing angle is smaller than a vertical viewing angle, and the horizontal and vertical viewing angles are inversely proportional to the aperture width of the pinhole.

SUMMERY OF THE UTILITY MODEL

The utility model provides a 3D display device with wide visual angle, as shown in attached figures 1 and 2, which is characterized in that the device comprises a backlight source, a gradually-changed pitch rectangular pinhole array, a barrier array and a display screen; the display screen is used for displaying the gradient pitch rectangular image element array; the backlight source, the gradient pitch rectangular pinhole array and the display screen are arranged in parallel; the gradually-changed pitch rectangular pinhole array is close to the backlight sourceAttaching and locating between the backlight source and the barrier rib array; the barrier array is vertically arranged between the display screen and the gradient pitch rectangular pinhole array; the centers of the backlight source, the gradient pitch rectangular pinhole array, the barrier array and the display screen are correspondingly aligned; the horizontal widths of the backlight source, the gradient pitch rectangular pinhole array and the display screen are the same, and the vertical widths of the backlight source, the gradient pitch rectangular pinhole array and the display screen are the same; as shown in fig. 3, in the gradual-change-pitch rectangular pinhole array, the horizontal pitches of the rectangular pinholes in any column are the same, the vertical pitches of the rectangular pinholes in any row are the same, and the horizontal pitch and the vertical pitch of the rectangular pinhole array gradually increase from the center to the edge; the number of rectangular pinholes in the horizontal direction of the gradual pitch rectangular pinhole array is equal to the number of rectangular pinholes in the vertical direction, and the number of the rectangular pinholes is even; the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes in the central position of the gradient-pitch rectangular pinhole array is equal to the ratio of the horizontal width to the vertical width of the gradient-pitch rectangular pinhole array; in the gradually-changed pitch rectangular pinhole arrayiHorizontal pitch of rows of rectangular pinholesH _i The first stepjVertical pitch of row rectangular pinholesV _j Calculated from the following formula

（1）

（2）

Wherein the content of the first and second substances,pis the horizontal pitch of the rectangular pinholes at the central position of the gradient pitch rectangular pinhole array,mis the number of rectangular pinholes in the horizontal direction in the gradually-changed pitch rectangular pinhole array,lis the viewing distance, the distance between the viewer,gis the distance between the display screen and the gradually-changed pitch rectangular pinhole array,vis the ratio of the vertical width to the horizontal width of the gradual pitch rectangular pinhole array,iis less than or equal tomIs a positive integer of (a) to (b),jis less than or equal tomA positive integer of (d); in the array of gradient-pitch rectangular picture elements, a histogram is shown in FIG. 4The horizontal pitch of the pixel is the same as that of the corresponding rectangular pinhole, and the vertical pitch of the rectangular image element is the same as that of the corresponding rectangular pinhole; the barrier array comprises a plurality of barriers which are vertically arranged with the display screen and the gradient pitch rectangular pinhole array and are used for separating adjacent rectangular pinholes and corresponding rectangular image elements, and light rays penetrating through each rectangular pinhole can only illuminate the corresponding rectangular image elements for imaging;

horizontal viewing perspective for integrated imaging 3D displayθ ₁Vertical viewing angleθ ₂Horizontal resolutionR ₁Vertical resolutionR ₂Respectively as follows:

（3）

（4）

（5）

（6）

wherein the content of the first and second substances,wis the aperture width of the rectangular pinhole.

Preferably, one end of the barrier is located at the junction of adjacent rectangular picture elements, and the other end is located at the junction of adjacent rectangular pinholes corresponding to the adjacent rectangular picture elements.

Drawings

FIG. 1 is a schematic diagram of the structure and horizontal direction parameters of the present invention

FIG. 2 is a schematic diagram of the structure and vertical parameters of the present invention

FIG. 3 is a schematic diagram of a rectangular pinhole array of the present invention

FIG. 4 is a schematic diagram of a rectangular image cell array according to the present invention

The reference numbers in the figures are:

1. the display panel comprises a backlight source, 2 a gradient pitch rectangular pinhole array, 3 a barrier array and 4 a display screen.

It should be understood that the above-described figures are merely schematic and are not drawn to scale.

Detailed Description

The following detailed description is of an exemplary embodiment of the invention in which the invention is utilized and further detailed. It is necessary to point out here that the following examples are only used for further illustration of the present invention, and should not be understood as limiting the scope of the present invention, and those skilled in the art can make some non-essential improvements and modifications to the present invention according to the above-mentioned contents of the present invention, and still fall into the scope of the present invention.

The utility model provides a 3D display device with wide visual angle, as shown in attached figures 1 and 2, which is characterized in that the device comprises a backlight source, a gradually-changed pitch rectangular pinhole array, a barrier array and a display screen; the display screen is used for displaying the gradient pitch rectangular image element array; the backlight source, the gradient pitch rectangular pinhole array and the display screen are arranged in parallel; the variable pitch rectangular pinhole array is tightly attached to the backlight source and is positioned between the backlight source and the barrier array; the barrier array is vertically arranged between the display screen and the gradient pitch rectangular pinhole array; the centers of the backlight source, the gradient pitch rectangular pinhole array, the barrier array and the display screen are correspondingly aligned; the horizontal widths of the backlight source, the gradient pitch rectangular pinhole array and the display screen are the same, and the vertical widths of the backlight source, the gradient pitch rectangular pinhole array and the display screen are the same; as shown in fig. 3, in the gradual-change-pitch rectangular pinhole array, the horizontal pitches of the rectangular pinholes in any column are the same, the vertical pitches of the rectangular pinholes in any row are the same, and the horizontal pitch and the vertical pitch of the rectangular pinhole array gradually increase from the center to the edge; the number of rectangular pinholes in the horizontal direction of the gradual pitch rectangular pinhole array is equal to the number of rectangular pinholes in the vertical direction, and the number of the rectangular pinholes is even; the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes at the center of the gradient pitch rectangular pinhole array is equal to the gradient pitchThe ratio of the horizontal width to the vertical width of the pitch rectangular pinhole array; in the gradually-changed pitch rectangular pinhole arrayiHorizontal pitch of rows of rectangular pinholesH _i The first stepjVertical pitch of row rectangular pinholesV _j Calculated from the following formula

（1）

（2）

Wherein the content of the first and second substances,pis the horizontal pitch of the rectangular pinholes at the central position of the gradient pitch rectangular pinhole array,mis the number of rectangular pinholes in the horizontal direction in the gradually-changed pitch rectangular pinhole array,lis the viewing distance, the distance between the viewer,gis the distance between the display screen and the gradually-changed pitch rectangular pinhole array,vis the ratio of the vertical width to the horizontal width of the gradual pitch rectangular pinhole array,iis less than or equal tomIs a positive integer of (a) to (b),jis less than or equal tomA positive integer of (d); as shown in fig. 4, in the array of gradient-pitch rectangular image elements, the horizontal pitch of a rectangular image element is the same as the horizontal pitch of its corresponding rectangular pinhole, and the vertical pitch of a rectangular image element is the same as the vertical pitch of its corresponding rectangular pinhole; the barrier array comprises a plurality of barriers which are vertically arranged with the display screen and the gradient pitch rectangular pinhole array and are used for separating adjacent rectangular pinholes and corresponding rectangular image elements, and light rays penetrating through each rectangular pinhole can only illuminate the corresponding rectangular image elements for imaging;

horizontal viewing perspective for integrated imaging 3D displayθ ₁Vertical viewing angleθ ₂Horizontal resolutionR ₁Vertical resolutionR ₂Respectively as follows:

（3）

（4）

（5）

（6）

wherein the content of the first and second substances,wis the aperture width of the rectangular pinhole.

Preferably, one end of the barrier is located at the junction of adjacent rectangular picture elements, and the other end is located at the junction of adjacent rectangular pinholes corresponding to the adjacent rectangular picture elements.

The ratio of the vertical width to the horizontal width of the rectangular pinhole array with gradually changed pitch isv=0.8, the horizontal pitch of the rectangular pinhole at the center of the gradient pitch rectangular pinhole array isp=5mm, aperture width of rectangular pinholew=1, viewing distance ofl=100mm, the distance between the display screen and the gradually-changed pitch rectangular pinhole array isg=5mm, the number of rectangular pinholes in the horizontal direction in the gradient pitch rectangular pinhole array ismAnd (6). The horizontal pitches of the rectangular pinholes in the 1 st to 6 th rows are respectively 6.05mm, 5.5mm, 5mm, 5.5mm and 6.05mm, and the vertical pitches of the rectangular pinholes in the 1 st to 6 th rows are respectively 4.84mm, 4.4mm, 4mm, 4.4mm and 4.84 mm; according to the formula (3), (4), (5) and (6), the horizontal viewing visual angle, the vertical viewing visual angle, the horizontal resolution, the vertical resolution that integrated formation of image 3D shows be 53 °, 43 °, 6 respectively.

Claims (2)

1. A3D display device with wide viewing angle is characterized by comprising a backlight source, a gradient pitch rectangular pinhole array, a barrier array and a display screen; the display screen is used for displaying the gradient pitch rectangular image element array; the backlight source, the gradient pitch rectangular pinhole array and the display screen are arranged in parallel; the variable pitch rectangular pinhole array is tightly attached to the backlight source and is positioned between the backlight source and the barrier array; barrier arrayThe display screen is vertically arranged between the display screen and the rectangular pinhole array with the gradually changed pitch; the centers of the backlight source, the gradient pitch rectangular pinhole array, the barrier array and the display screen are correspondingly aligned; the horizontal widths of the backlight source, the gradient pitch rectangular pinhole array and the display screen are the same, and the vertical widths of the backlight source, the gradient pitch rectangular pinhole array and the display screen are the same; in the gradually-changed pitch rectangular pinhole array, the horizontal pitches of rectangular pinholes in any column are the same, the vertical pitches of rectangular pinholes in any row are the same, and the horizontal pitch and the vertical pitch of the rectangular pinhole array are gradually increased from the center to the edge; the number of rectangular pinholes in the horizontal direction of the gradual pitch rectangular pinhole array is equal to the number of rectangular pinholes in the vertical direction, and the number of the rectangular pinholes is even; the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes in the central position of the gradient-pitch rectangular pinhole array is equal to the ratio of the horizontal width to the vertical width of the gradient-pitch rectangular pinhole array; in the gradually-changed pitch rectangular pinhole arrayiHorizontal pitch of rows of rectangular pinholesH _i The first stepjVertical pitch of row rectangular pinholesV _j Calculated from the following formula

Wherein the content of the first and second substances,pis the horizontal pitch of the rectangular pinholes at the central position of the gradient pitch rectangular pinhole array,mis the number of rectangular pinholes in the horizontal direction in the gradually-changed pitch rectangular pinhole array,lis the viewing distance, the distance between the viewer,gis the distance between the display screen and the gradually-changed pitch rectangular pinhole array,vis the ratio of the vertical width to the horizontal width of the gradual pitch rectangular pinhole array,iis less than or equal tomIs a positive integer of (a) to (b),jis less than or equal tomA positive integer of (d); in the array of rectangular image elements with gradually changed pitches, the horizontal pitch of the rectangular image element is the same as that of the corresponding rectangular pinhole, and the vertical pitch of the rectangular image element is the same as that of the corresponding rectangular pinholeThe straight pitch is the same; the barrier array comprises a plurality of barriers which are vertically arranged with the display screen and the gradient pitch rectangular pinhole array and are used for separating adjacent rectangular pinholes and corresponding rectangular image elements, and light rays penetrating through each rectangular pinhole can only illuminate the corresponding rectangular image elements for imaging;

horizontal viewing perspective for integrated imaging 3D displayθ ₁Vertical viewing angleθ ₂Horizontal resolutionR ₁Vertical resolutionR ₂Respectively as follows:

wherein the content of the first and second substances,wis the aperture width of the rectangular pinhole.

2. The wide-viewing-angle 3D display device of claim 1, wherein one end of the barrier rib is located at the junction of adjacent rectangular image elements, and the other end is located at the junction of adjacent rectangular pinholes corresponding to the adjacent rectangular image elements.

Images