CN211293476U - 3D display device based on barrier array - Google Patents

Abstract

The utility model discloses a 3D display device based on barrier array, which comprises a backlight source, a rectangular pinhole array, a barrier array and a display screen; the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes is equal to the ratio of the horizontal width to the vertical width of the rectangular pinhole array; the horizontal pitch of the rectangular image element is smaller than that of the corresponding rectangular pinhole, and the vertical pitch of the rectangular image element is smaller than that of the corresponding rectangular pinhole; the barrier in the barrier array is arranged between two adjacent rectangular image elements in the horizontal direction in the rectangular image element array and is used for separating the adjacent rectangular image elements in the horizontal direction, and light rays emitted by the backlight source are illuminated through each rectangular pinhole to form an image with the corresponding rectangular image element and cannot illuminate the adjacent rectangular image elements in the horizontal direction.

Description

3D display device based on barrier array

Technical Field

The utility model relates to a 3D shows, more specifically says, the utility model relates to a 3D display device based on barrier array.

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. However, in conventional integrated imaging 3D displays, both the image elements and the pinholes are square, i.e. the horizontal pitch of the image elements and the pinholes is equal to the vertical pitch. 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. The resolution of an integrated imaging 3D display is a few tenths of the resolution of a 2D display. Therefore, the non-uniformity of the resolution deepens the problem of poor viewing experience due to low resolution. In addition, there are also problems that the horizontal viewing angle is smaller than the vertical viewing angle, the horizontal and vertical viewing angles are inversely proportional to the number of pinholes in the horizontal and vertical directions, and the horizontal viewing angle is inversely proportional to the aperture width of the pinholes.

Disclosure of Invention

The utility model provides a 3D display device based on barrier array, as shown in attached figures 1 and 2, which is characterized in that the device comprises a backlight source, a rectangular pinhole array, a barrier array and a display screen; the display screen is used for displaying the rectangular image element array; the 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 rectangular pinhole array; the backlight source, the rectangular pinhole array and the horizontal and vertical central axes of the display screen are correspondingly aligned;the horizontal width of the backlight source is equal to that of the rectangular pinhole array; the vertical width of the backlight source is equal to that of the rectangular pinhole array; the horizontal width of the rectangular pinhole array is greater than that of the display screen; the vertical width of the rectangular pinhole array is greater than that of the display screen, and the ratio of the horizontal width to the vertical width of the rectangular pinhole array is equal to that of the display screen; as shown in fig. 3, in the rectangular pinhole array, the horizontal pitches of all the rectangular pinholes are the same, the vertical pitches of all the rectangular pinholes are the same, the number of the rectangular pinholes in the horizontal direction is equal to the number of the rectangular pinholes in the vertical direction, and the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes is equal to the ratio of the horizontal width to the vertical width of the rectangular pinhole array; in the rectangular pinhole array, the aperture widths of all the rectangular pinholes are the same; as shown in fig. 4, the rectangular image element array is composed of a series of rectangular image elements with the same size, wherein the horizontal pitch of the rectangular image elements is smaller than that of the corresponding rectangular pinholes, and the vertical pitch of the rectangular image elements is smaller than that of the corresponding rectangular pinholes; the ratio of the horizontal pitch to the vertical pitch of the rectangular picture elements is equal to the ratio of the horizontal width to the vertical width of the display screen; horizontal pitch of rectangular picture elementspComprises the following steps:

（1）

wherein the content of the first and second substances,ais the horizontal pitch of the rectangular pinholes,lis the viewing distance, the distance between the viewer,gis the distance between the display screen and the rectangular pinhole array; the barrier in the barrier array is arranged between two adjacent rectangular image elements in the horizontal direction in the rectangular image element array and is used for dividing the adjacent rectangular image elements in the horizontal direction, and light rays emitted by the backlight source are illuminated through each rectangular pinhole to form an image with the corresponding rectangular image element and cannot illuminate the adjacent rectangular image elements in the horizontal direction; horizontal viewing perspective for integrated imaging 3D displayθ ₁Vertical viewing angleθ ₂Horizontal resolutionR ₁Vertical resolutionR ₂Respectively as follows:

（2）

（3）

（4）

（5）

wherein the content of the first and second substances,wis the aperture width of the rectangular pinhole,mis the number of rectangular pinholes in the horizontal direction in the rectangular pinhole array,vis the ratio of the vertical width to the horizontal width of the rectangular pinhole array.

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. backlight source, 2 rectangular pinhole array, 3 barrier array and 4 display screen.

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

Detailed Description

The present invention will be described in further detail with reference to the following detailed description of an exemplary embodiment of a 3D display device based on a barrier rib array according to the present invention. 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 based on barrier array, as shown in attached figures 1 and 2, which is characterized in that the device comprises a backlight source, a rectangular pinhole array, a barrier array and a display screen; the display screen is used for displaying the rectangular image element array; the 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 rectangular pinhole array; the backlight source, the rectangular pinhole array and the horizontal and vertical central axes of the display screen are correspondingly aligned; the horizontal width of the backlight source is equal to that of the rectangular pinhole array; the vertical width of the backlight source is equal to that of the rectangular pinhole array; the horizontal width of the rectangular pinhole array is greater than that of the display screen; the vertical width of the rectangular pinhole array is greater than that of the display screen, and the ratio of the horizontal width to the vertical width of the rectangular pinhole array is equal to that of the display screen; as shown in fig. 3, in the rectangular pinhole array, the horizontal pitches of all the rectangular pinholes are the same, the vertical pitches of all the rectangular pinholes are the same, the number of the rectangular pinholes in the horizontal direction is equal to the number of the rectangular pinholes in the vertical direction, and the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes is equal to the ratio of the horizontal width to the vertical width of the rectangular pinhole array; in the rectangular pinhole array, the aperture widths of all the rectangular pinholes are the same; as shown in fig. 4, the rectangular image element array is composed of a series of rectangular image elements with the same size, wherein the horizontal pitch of the rectangular image elements is smaller than that of the corresponding rectangular pinholes, and the vertical pitch of the rectangular image elements is smaller than that of the corresponding rectangular pinholes; the ratio of the horizontal pitch to the vertical pitch of the rectangular picture elements is equal to the ratio of the horizontal width to the vertical width of the display screen; horizontal pitch of rectangular picture elementspComprises the following steps:

（1）

wherein the content of the first and second substances,ais the horizontal pitch of the rectangular pinholes,lis the viewing distance, the distance between the viewer,gis the distance between the display screen and the rectangular pinhole array; the barrier in the barrier array is arranged between two adjacent rectangular image elements in the horizontal direction in the rectangular image element array and is used for dividing the adjacent rectangular image elements in the horizontal direction, and light rays emitted by the backlight source are illuminated through each rectangular pinhole to form an image with the corresponding rectangular image element and cannot illuminate the adjacent rectangular image elements in the horizontal direction; horizontal viewing perspective for integrated imaging 3D displayθ ₁Vertical viewing angleθ ₂Horizontal resolutionR ₁Vertical resolutionR ₂Respectively as follows:

（2）

（3）

（4）

（5）

wherein the content of the first and second substances,wis the aperture width of the rectangular pinhole,mis the number of rectangular pinholes in the horizontal direction in the rectangular pinhole array,vis the ratio of the vertical width to the horizontal width of the rectangular pinhole array.

The ratio of the vertical width to the horizontal width of the rectangular pinhole array isv=0.75, horizontal pitch of rectangular pinholesp=11mm, aperture width of rectangular pinholew=2mm, viewing distancel=100mm, the distance between the display screen and the rectangular pinhole array isg=10mm, the number of rectangular pinholes in the horizontal direction in the rectangular pinhole array ism= 30. Obtained from the formulae (1), (2), (3), (4) and (5)The horizontal pitch of the image elements is 10mm, and the horizontal viewing angle, the vertical viewing angle, the horizontal resolution and the vertical resolution of the integrated imaging 3D display are respectively 66 degrees, 26 degrees, 30 degrees and 30 degrees.

Claims (1)

1. The 3D display device based on the barrier rib array is characterized by comprising a backlight source, a rectangular pinhole array, the barrier rib array and a display screen; the display screen is used for displaying the rectangular image element array; the 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 rectangular pinhole array; the backlight source, the rectangular pinhole array and the horizontal and vertical central axes of the display screen are correspondingly aligned; the horizontal width of the backlight source is equal to that of the rectangular pinhole array; the vertical width of the backlight source is equal to that of the rectangular pinhole array; the horizontal width of the rectangular pinhole array is greater than that of the display screen; the vertical width of the rectangular pinhole array is greater than that of the display screen, and the ratio of the horizontal width to the vertical width of the rectangular pinhole array is equal to that of the display screen; in the rectangular pinhole array, the horizontal pitches of all the rectangular pinholes are the same, the vertical pitches of all the rectangular pinholes are the same, the number of the rectangular pinholes in the horizontal direction is equal to the number of the rectangular pinholes in the vertical direction, and the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes is equal to the ratio of the horizontal width to the vertical width of the rectangular pinhole array; in the rectangular pinhole array, the aperture widths of all the rectangular pinholes are the same; the rectangular image element array is formed by closely arranging a series of rectangular image elements with the same size, the horizontal pitch of each rectangular image element is smaller than that of a corresponding rectangular pinhole, and the vertical pitch of each rectangular image element is smaller than that of the corresponding rectangular pinhole; the ratio of the horizontal pitch to the vertical pitch of the rectangular picture elements is equal to the ratio of the horizontal width to the vertical width of the display screen; horizontal pitch of rectangular picture elementspComprises the following steps:

wherein the content of the first and second substances,ais the horizontal pitch of the rectangular pinholes,lis the viewing distance, the distance between the viewer,gis the distance between the display screen and the rectangular pinhole array; the barrier in the barrier array is arranged between two adjacent rectangular image elements in the horizontal direction in the rectangular image element array and is used for dividing the adjacent rectangular image elements in the horizontal direction, and light rays emitted by the backlight source are illuminated through each rectangular pinhole to form an image with the corresponding rectangular image element and cannot illuminate the adjacent rectangular image elements in the horizontal direction; 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,mis the number of rectangular pinholes in the horizontal direction in the rectangular pinhole array,vis the ratio of the vertical width to the horizontal width of the rectangular pinhole array.

Images