CN211786413U - Double-vision 3D display device - Google Patents

Abstract

The utility model discloses a dual-view 3D display device, which comprises a display screen, a polarizer, a cylindrical lens grating with a gradient pitch, polarizing glasses I and polarizing glasses II; the polarizer is closely attached to the display screen, and is located between the display screen and the gradient Between the pitch cylindrical lens gratings; the sub-polarizer I is aligned with the left half of the display screen, and the sub-polarizer II is aligned with the right half of the display screen; the image element I passes through its corresponding lens unit and the sub-polarizer I 3D image I is reconstructed and can only be seen through polarized glasses I; image element II reconstructs 3D image II through its corresponding lens unit and sub-polarizer II, and can only be seen through polarized glasses II; 3D image I and The viewing angle and resolution of the 3D image II are equal, respectively.

Description

A dual-view 3D display device

technical field

The utility model relates to 3D display, and more particularly, the utility model relates to a dual-view 3D display device.

Background technique

One-dimensional integrated imaging dual-view 3D display is a fusion of dual-view display technology and one-dimensional integrated imaging 3D display technology. It enables viewers to see different 3D images in different viewing directions. One-dimensional integrated imaging dual-view 3D display has the advantage of high resolution. However, the traditional polarizer-based integrated imaging dual-view 3D display has the disadvantage of a narrow viewing angle.

SUMMARY OF THE INVENTION

The utility model proposes a dual-view 3D display device, as shown in FIG. 1 , which is characterized in that it includes a display screen, a polarizing plate, a cylindrical lens grating with a gradient pitch, polarizing glasses I and polarizing glasses II; The polarizer and the gradient pitch lenticular lens grating are placed in parallel and aligned accordingly; the polarizer is closely attached to the display screen and is located between the display screen and the gradient pitch lenticular lens grating; the display screen is used to display the image element array and is located in the gradient The focal plane of the pitch lenticular lens grating; the picture element array includes picture element I and picture element II, picture element I is located in the left half of the display screen, and picture element II is located in the right half of the display screen, as shown in Figure 2; The pitch of the lens elements in the graduated pitch cylindrical lens grating gradually increases from the middle to the two sides; the pitch P _i of the i -th column of lens elements in the graduated pitch cylindrical lens grating is calculated by the following formula

（1）

(1)

where p is the pitch of the lens elements in the middle of the graduated pitch cylindrical lens grating, m is the number of lens elements in the graduated pitch cylindrical lens grating, l is the viewing distance, and g is the distance between the display screen and the graduated pitch cylindrical lens grating pitch, n is the refractive index of the cylindrical lens grating with gradient pitch, d is the thickness of the cylindrical lens grating with gradient pitch, i is a positive integer less than or equal to m ; the polarizer consists of sub-polarizer I and sub-polarizer II, the sub-polarizer The polarization directions of I and sub-polarizer II are orthogonal, as shown in accompanying drawing 3; the widths of sub-polarizer I and sub-polarizer II are both equal to half the width of the display screen; the sub-polarizer I corresponds to the left half of the display screen Aligned, the sub-polarizer II is aligned with the right half of the display screen; the polarization direction of the polarizing glasses I is the same as that of the sub-polarizing plate I, and the polarization direction of the polarizing glasses II is the same as that of the sub-polarizing plate II; the pitch of the image element I is equal to its The pitch of the corresponding lens unit; the pitch of the image element II is equal to the pitch of the corresponding lens unit; the image element I reconstructs the 3D image I through the corresponding lens unit and the sub-polarizer I, and only through polarized glasses I see; Image element II reconstructs 3D image II through its corresponding lens unit and sub-polarizer II, and can only be seen through polarized glasses II; 3D image I and 3D image II have equal viewing angles and resolutions respectively; The viewing angle θ and resolution R of 3D image I and 3D image II are:

（2）

(2)

（3）。

(3).

Description of drawings

Accompanying drawing 1 is the structure and parameter schematic diagram of the present utility model

Accompanying drawing 2 is the structural schematic diagram of the image element array of the present invention

Accompanying drawing 3 is the structural schematic diagram of the polarizer of the utility model

The symbols in the above drawings are:

1. Display screen, 2. Polarizer, 3. Gradient pitch cylindrical lens grating, 4. Polarizing glasses I, 5. Polarizing glasses II, 6. Picture element I, 7. Picture element II, 8. Subpolarizer I, 9. Sub polarizer II, 10. 3D image I, 11. 3D image II.

It should be understood that the above drawings are schematic only and are not drawn to scale.

Detailed ways

A typical embodiment of a dual-view 3D display device of the present invention is described in detail below, and the present invention is further described in detail. It is necessary to point out here that the following examples are only used to further illustrate the present utility model, and should not be construed as limiting the protection scope of the present utility model. Those skilled in the art make some improvements to the present utility model according to the above-mentioned contents of the present utility model. Non-essential improvements and adjustments still belong to the protection scope of the present invention.

The utility model proposes a dual-view 3D display device, as shown in FIG. 1 , which is characterized in that it includes a display screen, a polarizing plate, a cylindrical lens grating with a gradient pitch, polarizing glasses I and polarizing glasses II; The polarizer and the gradient pitch lenticular lens grating are placed in parallel and aligned accordingly; the polarizer is closely attached to the display screen and is located between the display screen and the gradient pitch lenticular lens grating; the display screen is used to display the image element array and is located in the gradient The focal plane of the pitch lenticular lens grating; the picture element array includes picture element I and picture element II, picture element I is located in the left half of the display screen, and picture element II is located in the right half of the display screen, as shown in Figure 2; The pitch of the lens elements in the graduated pitch cylindrical lens grating gradually increases from the middle to the two sides; the pitch P _i of the i -th column of lens elements in the graduated pitch cylindrical lens grating is calculated by the following formula

（1）

(1)

where p is the pitch of the lens elements in the middle of the graduated pitch cylindrical lens grating, m is the number of lens elements in the graduated pitch cylindrical lens grating, l is the viewing distance, and g is the distance between the display screen and the graduated pitch cylindrical lens grating pitch, n is the refractive index of the cylindrical lens grating with gradient pitch, d is the thickness of the cylindrical lens grating with gradient pitch, i is a positive integer less than or equal to m ; the polarizer consists of sub-polarizer I and sub-polarizer II, the sub-polarizer The polarization directions of I and sub-polarizer II are orthogonal, as shown in accompanying drawing 3; the widths of sub-polarizer I and sub-polarizer II are both equal to half the width of the display screen; the sub-polarizer I corresponds to the left half of the display screen Aligned, the sub-polarizer II is aligned with the right half of the display screen; the polarization direction of the polarizing glasses I is the same as that of the sub-polarizer I, and the polarization direction of the polarizing glasses II is the same as that of the sub-polarizer II; the pitch of the image element I is equal to its The pitch of the corresponding lens unit; the pitch of the image element II is equal to the pitch of the corresponding lens unit; the image element I reconstructs the 3D image I through the corresponding lens unit and the sub-polarizer I, and only through polarized glasses I see; Image element II reconstructs 3D image II through its corresponding lens unit and sub-polarizer II, and can only be seen through polarized glasses II; 3D image I and 3D image II have equal viewing angles and resolutions respectively; The viewing angle θ and resolution R of 3D image I and 3D image II are:

（2）

(2)

（3）。

(3).

The pitch of the lens unit located in the middle of the graduated pitch cylindrical lens grating is p = 6mm, the number of lens units in the gradient pitch cylindrical lens grating is m = 8, the viewing distance is l = 205mm, the display screen and the gradient pitch cylindrical lens The pitch of the grating is g = 5 mm, the refractive index of the graduated pitch cylindrical lens grating is n = 2, and the thickness of the graduated pitch cylindrical lens grating is d = 2 mm. According to the formula (1), the pitches of the lens units in the 1st to 8th columns in the graduated pitch cylindrical lens grating are 7.1mm, 6.7mm, 6.3mm, 6mm, 6mm, 6.3mm, 6.7mm, 7.1mm, respectively; according to the formula According to (2) and (3), the viewing angle and resolution of 3D image I and 3D image II are 52° and 4, respectively.

Claims (1)

1. A double-vision 3D display device is characterized by comprising a display screen, a polaroid, a cylindrical lens grating with gradually changed pitches, a pair of polarized glasses I and a pair of polarized glasses II; the display screen, the polaroid and the cylindrical lenticulation with gradually changed pitch are arranged in parallel and are correspondingly aligned; the polaroid is tightly attached to the display screen and is positioned between the display screen and the cylindrical lens grating with the gradually changed pitch; the display screen is used for displaying the image element array and is positioned on the focal plane of the cylindrical lenticulation with gradually changed pitch; the image element array comprises an image element I and an image element II, wherein the image element I is positioned on the left half part of the display screen, and the image element II is positioned on the right half part of the display screen; the pitches of the lens units in the gradient-pitch cylindrical lenticulation are gradually increased from the middle to two sides; first in the cylindrical lens grating with gradually changed pitchesiPitch of column lens unitP _i Calculated from the following formula

Wherein,pis the pitch of the lens element located in the middle of the graded-pitch cylindrical lenticular lens,mis the number of lenticular elements in the gradient-pitch lenticular lens,lis the viewing distance, the distance between the viewer,gis the distance between the display screen and the cylindrical lenticular lens grating with gradually changed pitch,nis the refractive index of the graded-pitch cylindrical lenticular lens,dis the thickness of the graded-pitch cylindrical lenticular lens,iis less than or equal tomA positive integer of (d); the polaroid consists of a sub-polaroid I and a sub-polaroid II, and the polarization directions of the sub-polaroid I and the sub-polaroid II are orthogonal; the widths of the sub-polaroid I and the sub-polaroid II are equal to half of the width of the display screen; the sub-polarizing film I is correspondingly aligned with the left half part of the display screen, and the sub-polarizing film II is correspondingly aligned with the right half part of the display screen; polarization of polarized glasses IThe vibration direction is the same as that of the sub-polaroid I, and the polarization direction of the polarized glasses II is the same as that of the sub-polaroid II; the pitch of the picture element I is equal to the pitch of the lens element corresponding thereto; the pitch of the picture element II is equal to the pitch of the lens unit corresponding thereto; the image element I reconstructs a 3D image I through the lens unit corresponding to the image element I and the sub-polaroid I, and the 3D image I can be seen only through polarized glasses I; the image element II reconstructs a 3D image II through the lens unit corresponding to the image element II and the sub-polaroid II, and the 3D image II can only be seen through the polarized glasses II; the viewing angle and the resolution of the 3D image I and the 3D image II are respectively equal; viewing angle of 3D image I and 3D image IIθAnd resolutionRRespectively as follows:

。

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