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Ultra-wide visual angle three-dimensional light field display device

A display device and viewing angle technology, applied in the direction of instruments, etc., can solve the problems of increasing aberration and reducing the imaging quality of three-dimensional display, and achieve the effect of reducing crosstalk and ensuring imaging quality.

Inactive Publication Date: 2021-11-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the geometry of the microlens on the single-layer display is directly changed, such as using a microlens with a smaller curvature radius, the aberration will be increased and the imaging quality of the three-dimensional display will be reduced.

Method used

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  • Ultra-wide visual angle three-dimensional light field display device
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  • Ultra-wide visual angle three-dimensional light field display device

Examples

Experimental program
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Effect test

Embodiment 1

[0034] see figure 1 and figure 2 , the present embodiment provides a three-dimensional light field display device with an ultra-wide viewing angle, which is composed of a display screen 1 and a first microlens array 2 and a second microlens array 3 fixed on the display screen.

[0035] In this embodiment, the display screen 1 adopts a Micro LED display screen.

[0036] Specifically, in this embodiment, the schematic side view of the display device is as follows figure 2 shown. A first microlens array 2 is pasted on the display screen 1 , and a second microlens array 3 is pasted on a transparent substrate 4 . The display screen 1 and the side of the transparent substrate 4 bonded with the microlens array are placed facing each other, and the transparent substrate 4 and the display screen 1 are fixed by a polymer.

[0037] According to the focal length formula of the lens system, if the focal lengths of the microlenses of the two layers are f 1 with f 2 , then the equiva...

Embodiment 2

[0039] see figure 1 and image 3 , this embodiment provides an ultra-wide viewing angle three-dimensional light field display device, which is composed of a display screen 1 and a first microlens array 2 and a second microlens array 3 fixed on the display screen 1 .

[0040] In this embodiment, the display screen 1 is an OLED display screen.

[0041] Specifically, in this embodiment, the schematic side view of the display device is as follows image 3 shown. Two layers of lenses are bonded on both sides of a layer of transparent substrate 4 respectively. The transparent substrate 4 and the display screen 1 are fixed by polymer.

[0042] According to the focal length formula of the lens system, if the focal lengths of the microlenses of the two layers are f 1 with f 2 , then the equivalent focal length of the combination of the two-layer microlens array system is about It can be seen that f n 1 and f n 2 . Generally, the shorter the focal length, the larger the viewi...

Embodiment 3

[0044] see figure 1 and Figure 4 , this embodiment provides a three-dimensional light field display device with an ultra-wide viewing angle. The schematic side view of the display device is as follows Figure 4 shown. The device is sequentially composed of a display screen 1 , a first microlens array 2 and a second microlens array 3 attached to the first microlens array 2 .

[0045] Specifically, in this embodiment, the first microlens array 2 is a liquid crystal phase modulator 6 , the second microlens array 3 is a two-dimensional microlens array, and the display screen 1 is a liquid crystal display.

[0046] If the microlens focal length f 1 , so that the liquid crystal phase modulator 6 is loaded with a Fresnel lens phase φ 1 =g 1 (x,y), its equivalent lens focal length is f 2 . According to the focal length formula of the lens system, the equivalent focal length of the combination of the liquid crystal phase modulator 6 and the microlens array system is about It ...

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Abstract

The invention discloses an ultra-wide visual angle three-dimensional light field display device. The device comprises a display screen and two layers of microlens arrays fixed on the display screen. The two layers of micro-lens arrays are tightly attached to form a cascaded lens system. Compared with a traditional three-dimensional light field display device, the three-dimensional light field display device has an ultra-wide visual angle, and meanwhile aberration cannot be obviously increased.

Description

technical field [0001] The invention relates to the field of three-dimensional light field, in particular to an ultra-wide viewing angle three-dimensional light field display device. Background technique [0002] Using a display screen bonded with a microlens array is one of the key methods for realizing a three-dimensional light field display. Only a single-layer microlens array is pasted on the traditional three-dimensional display screen, and the solution of this device to realize three-dimensional light field display has the defect of a small viewing angle. In addition, due to the large scattering range of the light emitted by the traditional Lambertian surface light source, it is easy to scatter part of the light into the adjacent lens and increase the crosstalk. [0003] Increasing the field of view can be achieved by reducing the focal length of the microlens. However, if the geometry of the microlens on the single-layer display is directly changed, such as using a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B30/27G02B30/28
CPCG02B30/27G02B30/28
Inventor 杨可扬夏军
Owner SOUTHEAST UNIV