阅读说明：本技术 高分辨率一维集成成像3d显示装置 (High-resolution one-dimensional integrated imaging 3D display device ) 是由 吴非 樊为 高燕 范钧 陈章达 谢了尖 徐雯 任洪娇 曾星 于 2021-09-11 设计创作，主要内容包括：本发明公开了高分辨率一维集成成像3D显示装置,包括显示屏、偏振狭缝光栅I和偏振狭缝光栅II；与单个图像元对应的相邻透光狭缝I之间有且仅有一个透光狭缝II；与单个图像元对应的相邻透光狭缝I的间隔宽度大于位于该相邻透光狭缝I之间的透光狭缝II的孔径宽度；每个图像元发出的一部分光线经过偏振狭缝光栅I,且被偏振狭缝光栅I调制成具有相同偏振方向的偏振光I,偏振光I通过与该图像元对应的透光狭缝II投射到成像空间,重建3D图像；每个图像元发出的一部分光线通过与该图像元对应的透光狭缝I,经过偏振狭缝光栅II投射到成像空间,重建3D图像；重建的3D图像在观看区域合并成一个高分辨率3D图像。(The invention discloses a high-resolution one-dimensional integrated imaging 3D display device, which comprises a display screen, a polarization slit grating I and a polarization slit grating II, wherein the polarization slit grating I is arranged on the display screen; there is one and only one light-transmitting slit II between the adjacent light-transmitting slits I corresponding to a single image element; the interval width of the adjacent light-transmitting slits I corresponding to the single image element is larger than the aperture width of the light-transmitting slits II positioned between the adjacent light-transmitting slits I; a part of light emitted by each image element passes through the polarization slit grating I and is modulated into polarized light I with the same polarization direction by the polarization slit grating I, and the polarized light I is projected to an imaging space through a light-transmitting slit II corresponding to the image element to reconstruct a 3D image; a part of light rays emitted by each image element pass through a light-transmitting slit I corresponding to the image element and are projected to an imaging space through a polarization slit grating II to reconstruct a 3D image; the reconstructed 3D images are combined into one high resolution 3D image at the viewing area.)

1. The high-resolution one-dimensional integrated imaging 3D display device is characterized by comprising a display screen, a polarization slit grating I and a polarization slit grating II; the display screen, the polarization slit grating I and the polarization slit grating II are sequentially arranged in parallel; the display screen is used for displaying a plurality of image elements; the polarization directions of the polarization slit grating I and the polarization slit grating II are orthogonal; the polarization slit grating I is provided with a light-transmitting slit I; the polarization slit grating II is provided with a light-transmitting slit II; the light-transmitting slits II corresponding to the single image element are positioned between the adjacent light-transmitting slits I corresponding to the image element, and only one light-transmitting slit II is arranged between the adjacent light-transmitting slits I corresponding to the single image element; the interval width of the adjacent light-transmitting slits I corresponding to the single image element is larger than the aperture width of the light-transmitting slits II positioned between the adjacent light-transmitting slits I; a part of light emitted by each image element passes through the polarization slit grating I and is modulated into polarized light I with the same polarization direction by the polarization slit grating I, and the polarized light I is projected to an imaging space through a light-transmitting slit II corresponding to the image element to reconstruct a 3D image; a part of light rays emitted by each image element pass through a light-transmitting slit I corresponding to the image element and are projected to an imaging space through a polarization slit grating II to reconstruct a 3D image; the reconstructed 3D images are combined into one high resolution 3D image at the viewing area.

2. The high resolution one-dimensional integrated imaging 3D display device according to claim 1, wherein the pitches of the picture elements are all the same; the aperture widths of the light-transmitting slits I are the same, and the aperture widths of the light-transmitting slits II are the same; the number of the light-transmitting slits I corresponding to a single image element is the same, and the number of the light-transmitting slits II corresponding to a single image element is the same; the interval widths of the adjacent light-transmitting slits I corresponding to a single image element are all the same.

3. The high resolution one-dimensional integrated imaging 3D display device according to claim 2, wherein a plurality of light transmission slits I corresponding to a single image element are symmetrically arranged with the center of the image element as a center; the centers of the light-transmitting slits II positioned between the adjacent light-transmitting slits I are correspondingly aligned with the centers of the intervals of the adjacent light-transmitting slits I.

4. The high resolution one-dimensional integrated imaging 3D display device according to claim 3, wherein the aperture width of the light-transmitting slit IwThe interval width of the adjacent light-transmitting slits I corresponding to a single image elementaAperture width of light-transmitting slit IIv、Thickness of polarization slit grating Is、Thickness of polarization slit grating IItSatisfies the following formula

Wherein the content of the first and second substances,pis the pitch of the picture elements and,nis the number of light-transmitting slits I corresponding to a single picture element,gis the distance between the display screen and the polarization slit grating I,dis the distance between the polarization slit grating I and the polarization slit grating II.

5. The high resolution one-dimensional integrated imaging 3D display device according to claim 4, wherein the aperture width of the light transmission slit IwAperture width of the light-transmitting slit IIvSatisfies the following formula

Wherein the content of the first and second substances,pis the pitch of the picture elements and,nis the number of light-transmitting slits I corresponding to a single picture element,ais the separation width of adjacent light-transmitting slits I corresponding to a single picture element.

6. The high resolution one-dimensional integrated imaging 3D display device according to claim 2, wherein the horizontal resolution of the one-dimensional integrated imaging 3D display devicerIs composed of

Wherein the content of the first and second substances,nis the number of light-transmitting slits I corresponding to a single picture element,mis the number of picture elements.

Technical Field

The present invention relates to 3D display, and more particularly, to a high resolution one-dimensional integrated imaging 3D display device.

Background

The integrated imaging records the information of the 3D scene to a photosensitive film, and projects the information on the photosensitive film to an imaging space by utilizing the principle of reversible light path, thereby reconstructing the 3D scene. Compared with other 3D displays, the integrated imaging 3D display has the advantages of continuous viewing viewpoints, no need of vision-aiding equipment and coherent light and the like.

The existing technical scheme adopts a backlight source and a slit array to realize high-resolution integrated imaging 3D display: the slit array is positioned between the backlight source and the display screen and is attached to the backlight source; the display screen is used for displaying the image element array; the slit array comprises a plurality of groups of sub-slit arrays; the pitch of the slits in each group of sub-slit arrays is equal to the pitch of the image elements; and respectively illuminating the image element array by the light rays of the multiple groups of sub-slit arrays to reconstruct a plurality of 3D images, and combining the 3D images into a high-resolution 3D image in a viewing area. However, the above-mentioned technical solutions still have the problem of insufficient horizontal resolution.

Disclosure of Invention

The invention provides a high-resolution one-dimensional integrated imaging 3D display device, which is characterized by comprising a display screen, a polarization slit grating I and a polarization slit grating II, wherein the polarization slit grating I is arranged on the display screen; the display screen, the polarization slit grating I and the polarization slit grating II are sequentially arranged in parallel; the display screen is used for displaying a plurality of image elements; the polarization directions of the polarization slit grating I and the polarization slit grating II are orthogonal; the polarization slit grating I is provided with a light-transmitting slit I, as shown in FIG. 2; the polarization slit grating II is provided with a light-transmitting slit II, as shown in figure 3; the light-transmitting slits II corresponding to the single image element are positioned between the adjacent light-transmitting slits I corresponding to the image element, and only one light-transmitting slit II is arranged between the adjacent light-transmitting slits I corresponding to the single image element; the interval width of the adjacent light-transmitting slits I corresponding to the single image element is larger than the aperture width of the light-transmitting slits II positioned between the adjacent light-transmitting slits I; a part of light emitted by each image element passes through the polarization slit grating I and is modulated into polarized light I with the same polarization direction by the polarization slit grating I, and the polarized light I is projected to an imaging space through a light-transmitting slit II corresponding to the image element to reconstruct a 3D image; a part of light rays emitted by each image element pass through a light-transmitting slit I corresponding to the image element and are projected to an imaging space through a polarization slit grating II to reconstruct a 3D image; the reconstructed 3D images are combined into one high resolution 3D image at the viewing area.

Preferably, the pitch of the picture elements is the same; the aperture widths of the light-transmitting slits I are the same, and the aperture widths of the light-transmitting slits II are the same; the number of the light-transmitting slits I corresponding to a single image element is the same, and the number of the light-transmitting slits II corresponding to a single image element is the same; the interval widths of the adjacent light-transmitting slits I corresponding to a single image element are all the same.

Preferably, the plurality of light-transmitting slits I corresponding to a single image element are symmetrically arranged with the center of the image element as the center; the centers of the light-transmitting slits II positioned between the adjacent light-transmitting slits I are correspondingly aligned with the centers of the intervals of the adjacent light-transmitting slits I.

Preferably, the aperture width of the light-transmitting slit IwThe interval width of the adjacent light-transmitting slits I corresponding to a single image elementaAperture width of light-transmitting slit IIv、Thickness of polarization slit grating Is、Thickness of polarization slit grating IItSatisfies the following formula

（1）

（2）

（3）

（4）

Wherein the content of the first and second substances,pis the pitch of the picture elements and,nis the number of light-transmitting slits I corresponding to a single picture element,gis the distance between the display screen and the polarization slit grating I,dis the distance between the polarization slit grating I and the polarization slit grating II.

Preferably, the aperture width of the light-transmitting slit IwAperture width of the light-transmitting slit IIvSatisfies the following formula

（5）

Wherein the content of the first and second substances,pis the pitch of the picture elements and,nis the number of light-transmitting slits I corresponding to a single picture element,ais the separation width of adjacent light-transmitting slits I corresponding to a single picture element.

Preferably, the horizontal resolution of the one-dimensional integrated imaging 3D display devicerIs composed of

（6）

Wherein the content of the first and second substances,nis the number of light-transmitting slits I corresponding to a single picture element,mis the number of picture elements.

Drawings

FIG. 1 is a schematic view of the present invention

FIG. 2 is a schematic diagram of a polarization slit grating I of the present invention

FIG. 3 is a schematic diagram of a polarization slit grating II of the present invention

The reference numbers in the figures are:

1. the display screen, 2. polarization slit grating I, 3. polarization slit grating II, 4. light transmission slit I, 5. light transmission slit II.

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 the invention. It should be noted that the following examples are only for illustrative purposes and should not be construed as limiting the scope of the present invention, and that the skilled person in the art may make modifications and adaptations of the present invention without departing from the scope of the present invention.

The invention provides a high-resolution one-dimensional integrated imaging 3D display device, which is characterized by comprising a display screen, a polarization slit grating I and a polarization slit grating II, wherein the polarization slit grating I is arranged on the display screen; the display screen, the polarization slit grating I and the polarization slit grating II are sequentially arranged in parallel; the display screen is used for displaying a plurality of image elements; the polarization directions of the polarization slit grating I and the polarization slit grating II are orthogonal; the polarization slit grating I is provided with a light-transmitting slit I, as shown in FIG. 2; the polarization slit grating II is provided with a light-transmitting slit II, as shown in figure 3; the light-transmitting slits II corresponding to the single image element are positioned between the adjacent light-transmitting slits I corresponding to the image element, and only one light-transmitting slit II is arranged between the adjacent light-transmitting slits I corresponding to the single image element; the interval width of the adjacent light-transmitting slits I corresponding to the single image element is larger than the aperture width of the light-transmitting slits II positioned between the adjacent light-transmitting slits I; a part of light emitted by each image element passes through the polarization slit grating I and is modulated into polarized light I with the same polarization direction by the polarization slit grating I, and the polarized light I is projected to an imaging space through a light-transmitting slit II corresponding to the image element to reconstruct a 3D image; a part of light rays emitted by each image element pass through a light-transmitting slit I corresponding to the image element and are projected to an imaging space through a polarization slit grating II to reconstruct a 3D image; the reconstructed 3D images are combined into one high resolution 3D image at the viewing area.

Preferably, the pitch of the picture elements is the same; the aperture widths of the light-transmitting slits I are the same, and the aperture widths of the light-transmitting slits II are the same; the number of the light-transmitting slits I corresponding to a single image element is the same, and the number of the light-transmitting slits II corresponding to a single image element is the same; the interval widths of the adjacent light-transmitting slits I corresponding to a single image element are all the same.

Preferably, the plurality of light-transmitting slits I corresponding to a single image element are symmetrically arranged with the center of the image element as the center; the centers of the light-transmitting slits II positioned between the adjacent light-transmitting slits I are correspondingly aligned with the centers of the intervals of the adjacent light-transmitting slits I.

Preferably, the aperture width of the light-transmitting slit IwThe interval width of the adjacent light-transmitting slits I corresponding to a single image elementaAperture width of light-transmitting slit IIv、Thickness of polarization slit grating Is、Thickness of polarization slit grating IItSatisfies the following formula

（1）

（2）

（3）

（4）

Wherein the content of the first and second substances,pis the pitch of the picture elements and,nis the number of light-transmitting slits I corresponding to a single picture element,gis the distance between the display screen and the polarization slit grating I,dis the distance between the polarization slit grating I and the polarization slit grating II.

Preferably, the aperture width of the light-transmitting slit IwAperture width of the light-transmitting slit IIvSatisfies the following formula

（5）

Wherein the content of the first and second substances,pis the pitch of the picture elements and,nis the number of light-transmitting slits I corresponding to a single picture element,ais paired with a single image elementThe interval width of the adjacent light-transmitting slits I should be.

Preferably, the horizontal resolution of the one-dimensional integrated imaging 3D display devicerIs composed of

（6）

Wherein the content of the first and second substances,nis the number of light-transmitting slits I corresponding to a single picture element,mis the number of picture elements.

The pitch of the image elements is 7mm, the distance between the display screen and the polarization slit grating I is 1.8mm, the distance between the polarization slit grating I and the polarization slit grating II is 0.3mm, the number of the light-transmitting slits I corresponding to a single image element is 3, the aperture width of the light-transmitting slits I is 0.6mm, and the number of the image elements is 100, then the interval width of the adjacent light-transmitting slits I corresponding to a single image element and the aperture width of the light-transmitting slits II are calculated by the formulas (1), (2), (3), (4) and (5)、The thickness of the polarization slit grating I and the thickness of the polarization slit grating II are respectively 1.4mm, 1mm, 0.9mm and 1.5mm, and the horizontal resolution of the one-dimensional integrated imaging 3D display device calculated by the formula (6) is 500.