CN-121995648-A - Aerial imaging display device

CN121995648ACN 121995648 ACN121995648 ACN 121995648ACN-121995648-A

Abstract

An aerial imaging display device comprises an image display module and a pixel light field regulating screen arranged on the light emitting side of the image display module, wherein image light emitted by the image display module forms a virtual image in the air after passing through the pixel light field regulating screen, the virtual image is composed of a plurality of space pixels, the pixel light field regulating screen comprises a plurality of body pixels, each body pixel comprises a plurality of diffraction pixels, the diffraction pixels of each body pixel, which conduct image light to the same space pixel, are defined as the same coding pixel, the image light of the same coding pixel of different body pixels, is conducted to the same space pixel of a virtual image surface, the different coding pixels of the same body pixel are in one-to-one correspondence with the corresponding space pixel of the virtual image surface, each diffraction pixel is composed of a diffraction structure, the orientation angle and/or the period of each diffraction pixel of each body pixel are different, and the orientation angle and/or the period of the same coding pixel of each body pixel are different. The aerial imaging display device can realize the spatial depth display without medium.

Inventors

LUO MINGHUI
QIAO WEN
YANG MING
CHEN LINSEN

Assignees

苏州苏大维格科技集团股份有限公司
苏州大学

Dates

Publication Date: 20260508
Application Date: 20241107

Claims (10)

1. The aerial imaging display device is characterized by comprising an image display module and a pixel light field regulating screen arranged on the light emitting side of the image display module, wherein image light emitted by the image display module passes through the pixel light field regulating screen and then forms a virtual image in the air, the virtual image is composed of a plurality of spatial pixels which are arranged in a matrix, the pixel light field regulating screen comprises a plurality of body pixels, each body pixel comprises a plurality of diffraction pixels which are arranged in a matrix, the diffraction pixels of each body pixel, which conduct image light to the same spatial pixel, are defined as the same coding pixel, image light of the same coding pixel of different body pixels, are conducted to the same spatial pixel of the virtual image surface, the different coding pixels of the same body pixel are in one-to-one correspondence to conduct image light to the corresponding spatial pixels of the virtual image surface, all the spatial pixels are combined to form the virtual image, each diffraction pixel is composed of a diffraction structure, the orientation angle and/or period of each diffraction pixel is different, and the orientation angle and/or the period of each body pixel is different.
2. The aerial imaging display apparatus of claim 1, wherein a first direction and a second direction are defined to be parallel to a light-emitting surface of the pixel light field adjustment screen, the first direction being perpendicular to the second direction, and the plurality of body pixels being arranged in a matrix along the first direction and the second direction.
3. The aerial imaging display device of claim 2 wherein each of said volume pixels comprises a plurality of horizontal pixel groups arranged in sequence along said second direction, each of said horizontal pixel groups comprising a plurality of said diffraction pixels arranged in sequence along said first direction, each of said volume pixels comprising a plurality of vertical pixel groups arranged in sequence along said first direction, each of said vertical pixel groups comprising a plurality of said diffraction pixels arranged in sequence along said second direction.
4. The aerial imaging display device of claim 1, wherein the number of diffraction pixels for each of the volume pixels is the same as and in one-to-one correspondence with the number of spatial pixels of the virtual image.
5. The aerial imaging display device of claim 1, wherein the pixel light field modulation screen comprises a substrate and a diffraction structure formed on a surface of the substrate, wherein individual ones of the voxels are comprised of differently oriented, periodic diffraction structures.
6. The aerial image display device of claim 5, wherein the substrate is attached to the light-emitting surface of the image display module, or the substrate is disposed opposite to the light-emitting surface of the image display module.
7. The aerial imaging display device of claim 1, wherein the diffractive structure is a nanograting structure.
8. The aerial imaging display device of claim 1, wherein the image display module comprises a backlight for providing directional light rays having divergent angles to the display panel and a display panel for providing dynamic display image information to the pixel light field control screen.
9. An aerial imaging display device as claimed in any one of claims 1 to 8, wherein light rays emitted by the respective voxels converge in front of the aerial imaging display device before being emitted, the virtual image is located in front of the aerial imaging display device, or light rays emitted by the respective voxels diverge in front of the aerial imaging display device after being emitted, the virtual image is located behind the aerial imaging display device.
10. An aerial imaging display device as claimed in any one of claims 1 to 8 wherein the virtual image is parallel to the pixel light field modulation screen or has an included angle with the pixel light field modulation screen.

Description

Aerial imaging display device Technical Field The invention relates to the technical field of display equipment, in particular to an aerial imaging display device. Background Along with the development of display technology, traditional flat panel display has been transited to multi-dimensional and multi-space stereoscopic display, augmented reality display and the like, and the diversity and innovation of display are increasing. The advent of the metauniverse era has driven the revolution of subversion display modes in multiple fields and industries. At present, a plurality of manufacturers develop transparent display, namely, display images on a screen transparent under visible light, so that information on the screen can be seen, and the real space can be seen through the screen, thereby having great application in the fields of exhibition, intelligent display and the like. But it is still flat panel display in nature, with no change in display that has led to the innovation. Some manufacturers propose suspension display, the image surface is suspended in space through multiple reflections, the display mode is novel and unique, and the method has a large application prospect in scenes such as vehicle-mounted display, exhibition and demonstration. However, in order to realize a floating display, the display device or apparatus is bulky and requires a certain space to conduct light, which limits some application markets. Disclosure of Invention In view of the above, the present invention provides an aerial imaging display device, which can realize the depth display without dielectric space, and has small volume and less crosstalk. The utility model provides an aerial image display device, including image display module and the pixel light field regulation and control screen that sets up in image display module light-emitting side, image light that image display module sent forms virtual image in the sky after the pixel light field regulation and control screen, virtual image comprises a plurality of spatial pixels that are the matrix arrangement, the pixel light field regulation and control screen includes a plurality of individual pixels, each diffraction pixel of each individual pixel is used for providing image light for each spatial pixel, the diffraction pixel that each individual pixel conducted image light to same spatial pixel is defined as same coding pixel, the image light of the same coding pixel of different individual pixels is conducted to the same spatial pixel of virtual image plane, the different coding pixels of same individual pixel are conducted image light to the corresponding spatial pixel of virtual image plane one by one, all spatial pixels are combined and constitute virtual image, each diffraction pixel is by diffraction structure constitution, the orientation angle and/or the cycle of each diffraction pixel of each individual pixel are different, the same coding pixel of each individual pixel is different. In the embodiment of the invention, a first direction and a second direction are defined to be parallel to the light-emitting surface of the pixel light field regulation screen, the first direction is perpendicular to the second direction, and a plurality of body pixels are arranged in a matrix along the first direction and the second direction. In an embodiment of the invention, each body pixel comprises a plurality of horizontal pixel groups sequentially arranged along the second direction, each horizontal pixel group comprises a plurality of diffraction pixels sequentially arranged along the first direction, each body pixel comprises a plurality of vertical pixel groups sequentially arranged along the first direction, and each vertical pixel group comprises a plurality of diffraction pixels sequentially arranged along the second direction. In an embodiment of the present invention, the number of diffraction pixels of each of the volume pixels is the same as the number of spatial pixels of the virtual image, and corresponds one-to-one. In an embodiment of the present invention, the pixel light field adjusting screen includes a substrate and a diffraction structure formed on a surface of the substrate, where individual pixels are composed of diffraction structures with different orientations and periods. In an embodiment of the invention, the substrate is attached to the light emitting surface of the image display module, or the substrate and the light emitting surface of the image display module are disposed opposite to each other. In an embodiment of the present invention, the diffraction structure is a nano-grating structure. In an embodiment of the invention, the image display module includes a backlight source and a display panel, wherein the backlight source is used for providing directional light rays with divergent angles for the display panel, and the display panel is used for providing dynamic display image information for the pixel light field regulation screen. In