CN209248169U - Wide viewing angle and one-dimensional integrated imaging 3D display device without crosstalk - Google Patents

Abstract

One-dimensional integrated imaging 3D display device the utility model discloses wide viewing angle and without crosstalk, including backlight, gradual change slit grating and display screen；Gradual change slit grating is between backlight and display screen；Backlight, gradual change slit grating and display screen are placed in parallel, and corresponding alignment；The spacing of backlight and gradual change slit grating is no more than the spacing of gradual change slit grating and display screen；In gradual change slit grating, the thickness of slit is identical, and the pitch of the slit of any one column is identical, and the aperture of the slit of any one column is identical, and the pitch of gradual change slit grating and aperture are gradually increased from centre to both sides；The hole wall of slit is light-absorption layer in gradual change slit grating, and each image primitive is all illuminated by the light by corresponding slit, and only illuminates corresponding image primitive by the light of each slit.

Description

Wide-viewing-angle and crosstalk-free one-dimensional integrated imaging 3D display device

Technical Field

The utility model relates to an integrated formation of image 3D shows, more specifically says, the utility model relates to a wide visual angle and the one-dimensional integrated formation of image 3D display device that does not have crosstalk.

Background

The one-dimensional integrated imaging 3D display technology is a true 3D display technology without any vision-aid equipment. The technology has the characteristic of being watched by naked eyes, the recording and displaying processes are relatively simple, high-resolution and full-true-color stereo images can be displayed, and the technology is one of hot spot technologies in the current 3D display technology. However, the current one-dimensional integrated imaging 3D display device still has crosstalk, thereby limiting its practical application. In addition, in the conventional one-dimensional integrated imaging 3D display device, the viewing angle is related to the number of slits and the viewing distance, thereby limiting its practical application.

Disclosure of Invention

The utility model provides a one-dimensional integrated imaging 3D display device with wide visual angle and no crosstalk, as shown in figure 1, which is characterized in that the device comprises a display screen and a gradual change slit grating; the gradual change slit grating and the display screen are arranged in parallel and are correspondingly aligned; in the gradient slit grating, the thickness of all slits is the same, the pitch of the slits in any row is the same, the aperture width of the slits in any row is the same, and the pitch and the aperture width of the gradient slit grating are gradually increased from the middle to two sides; thickness of gradient slit gratingtComprises the following steps:

（1）

wherein,pthe pitch of the slit at the center of the graded slit grating,wthe aperture width of the slit at the center of the gradient slit grating,gthe distance between the gradually-changed slit grating and the display screen is changed; the hole wall of the slit in the gradient slit grating is a light absorption layer, and light rays emitted by each image element can only pass through the slit corresponding to the image element and cannot pass through other slits, so that crosstalk is eliminated;

gradual change slit gratingiPitch of column slitH _i And a firstiAperture width of column slitA _i Respectively as follows:

（2）

（3）

wherein,iis less than or equal tomIs a positive integer of (a) to (b),lin order to be able to view the distance,mthe number of the slits in the slit grating is gradually changed.

Preferably, the viewing angle of the one-dimensional integrated imaging 3D display device with wide viewing angle and no crosstalkθComprises the following steps:

（4）

wherein,pthe pitch of the slit at the center of the graded slit grating,tin order to gradually change the thickness of the slit grating,gthe distance between the slit grating and the display screen is gradually changed.

Compared with the prior art, the beneficial effects of the utility model are that: the thickness of the gradient slit grating is reasonably set, so that all image elements are illuminated by light rays passing through the corresponding slits, the light rays passing through each slit only illuminate the corresponding image elements, the hole wall of the slit in the gradient slit grating is further set as a light absorption layer, the light rays are prevented from reflecting through the hole wall to illuminate other image elements, and therefore crosstalk is thoroughly eliminated; the pitch and the aperture width of the gradual change slit grating are reasonably set, so that the viewing angle is independent of the number of slits and the viewing distance.

Drawings

Figure 1 is the utility model discloses an integrated formation of image 3D display device's structure and parameter map

The reference numbers in the figures are:

1. display screen, 2, gradual change slit grating.

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

Detailed Description

The following describes in detail an exemplary embodiment of the wide viewing angle and crosstalk-free one-dimensional integrated imaging 3D display device of the present invention, and the present invention is further described in detail. 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 one-dimensional integrated imaging 3D display device with wide visual angle and no crosstalk, as shown in figure 1, which is characterized in that the device comprises a display screen and a gradual change slit grating; the gradual change slit grating and the display screen are arranged in parallel and are correspondingly aligned; in the gradient slit grating, the thickness of all slits is the same, the pitch of the slits in any row is the same, the aperture width of the slits in any row is the same, and the pitch and the aperture width of the gradient slit grating are gradually increased from the middle to two sides; gradual changeThickness of slit gratingtComprises the following steps:

（1）

wherein,pthe pitch of the slit at the center of the graded slit grating,wthe aperture width of the slit at the center of the gradient slit grating,gthe distance between the gradually-changed slit grating and the display screen is changed; the hole wall of the slit in the gradient slit grating is a light absorption layer, and light rays emitted by each image element can only pass through the slit corresponding to the image element and cannot pass through other slits, so that crosstalk is eliminated;

gradual change slit gratingiPitch of column slitH _i And a firstiAperture width of column slitA _i Respectively as follows:

（2）

（3）

wherein,iis less than or equal tomIs a positive integer of (a) to (b),lin order to be able to view the distance,mthe number of the slits in the slit grating is gradually changed.

Preferably, the viewing angle of the one-dimensional integrated imaging 3D display device with wide viewing angle and no crosstalkθComprises the following steps:

（4）

wherein,pthe pitch of the slit at the center of the graded slit grating,tin order to gradually change the thickness of the slit grating,gthe distance between the slit grating and the display screen is gradually changed.

The micro image array and the gradient slit grating both comprise 5 units, and the pitch of the slit positioned at the center of the gradient slit grating isp=5mm, the aperture width of the slit at the center of the gradient slit grating isw=1mm, viewing distancel=102mm, the distance between the gradual change slit grating and the display screen isg=2mm, the thickness of the graded slit grating is calculated by the formula (1)tThe pitch of the slits in the 1 st to 5 th rows of slits is 1mm, the pitch of the slits in the 1 st to 5 th rows of slits is 5.4mm, 5.2mm, 5mm, 5.2mm and 5.4mm respectively, and the aperture width of the slits in the 1 st to 5 th rows of slits is 1.08mm, 1.04mm, 1mm, 1.04mm and 1.08mm respectively, which are calculated by the formula (3); the viewing angle was calculated from equation (4) to be 90 °.

Claims (2)

1. The one-dimensional integrated imaging 3D display device with wide visual angle and no crosstalk is characterized by comprising a display screen and a gradual-change slit grating; the gradual change slit grating and the display screen are arranged in parallel and are correspondingly aligned; in the gradient slit grating, the thickness of all slits is the same, the pitch of the slits in any row is the same, the aperture width of the slits in any row is the same, and the pitch and the aperture width of the gradient slit grating are gradually increased from the middle to two sides; thickness of gradient slit gratingtComprises the following steps:

wherein,pthe pitch of the slit at the center of the graded slit grating,wthe aperture width of the slit at the center of the gradient slit grating,gthe distance between the gradually-changed slit grating and the display screen is changed; the hole wall of the slit in the gradient slit grating is a light absorption layer, and light rays emitted by each image element can only pass through the slit corresponding to the image element and cannot pass through other slits, so that crosstalk is eliminated;

gradual change slit gratingiPitch of column slitH _i And a firstiAperture width of column slitA _i Respectively as follows:

wherein,iis less than or equal tomIs a positive integer of (a) to (b),lin order to be able to view the distance,mthe number of the slits in the slit grating is gradually changed.

2. The wide-viewing-angle and crosstalk-free one-dimensional integrated imaging 3D display device according to claim 1, wherein the viewing angle of the wide-viewing-angle and crosstalk-free one-dimensional integrated imaging 3D display deviceθComprises the following steps:

wherein,pthe pitch of the slit at the center of the graded slit grating,tin order to gradually change the thickness of the slit grating,gthe distance between the slit grating and the display screen is gradually changed.