Desktop 3D display system and display method

Patent metadata

Field	Value
Publication number	US-11513365-B2
Application number	US-201916765145-A
Country	US
Kind code	B2
Filing date	Feb 15, 2019
Priority date	Aug 3, 2018
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

As disclosed herein, a desktop 3D display system is provided. A 2D image display module is used for receiving and displaying an integral imaging source. A viewing angle guide module is used for guiding light emitted from the integral imaging source. A light modulation module is arranged for modulating the light guided by the viewing angle guide module and reconstructing a 3D image. A rotation module is configured to enable synchronous rotation of the 2D image display module, the view angle guide module and the light modulation module, wherein. A rotation angle speed of the synchronous rotation is associated with the switching speed of the integral imaging source of the 2D image display module. For a 3D image reconstructed in a single visual area range, crosstalk created by the diffuse reflective feature of pixels on a 3D image in other visual areas can be eliminated, thereby improving the viewing experience.

First claim

What is claimed is:

1. A desktop 3D display system, comprising:
a 2D image display module configured to receive and display an integral imaging source;
a viewing angle directing module provided on the 2D image display module and configured to direct a light emitted by the integral imaging source displayed on the 2D image display module;
a light modulating module provided on the viewing angle directing module and configured to modulate the light directed by the viewing angle directing module and reconstruct a 3D image;
wherein the display system further comprises a rotating module to enable the 2D image display module, the viewing angle directing module, and the light modulating module to rotate synchronously, and a rotational angular speed of the synchronous rotation is associated with a switching speed of the integral imaging source displayed on the 2D image display module;
wherein the viewing angle directing module comprises a viewing angle directing layer formed by arranging a plurality of directing units, the directing unit comprises a modulating hole, an aperture, and a lens hole, the modulating hole is configured to direct the light emitted by the integral imaging source displayed on the 2D image display module, the aperture and the lens hole are configured to cooperatively fix the light modulating module;
wherein the integral imaging source consists of multiple-frame element image arrays; each frame element image array corresponds to a 3D image information within a viewing area defined by a horizontal viewing angle θ h and a vertical viewing angle θ v ;
wherein each frame element image array is generated by encoding a plurality of element images; each element image comprises a portion of the 3D image information corresponding to the element image arrays;
wherein the light modulating module comprises a lens array; the lens array comprises a plurality of lenses arranged corresponding to the directing units; and
wherein the light modulating module further comprises a display optimizing module provided above the lens array and configured to reproduce a complete continuous 3D image.

2. The desktop 3D display system according to claim 1 , wherein an angle between an extending direction of a longitudinal axis of each modulating hole and a horizontal plane is an inclining angle θ.

3. The desktop 3D display system according to claim 1 , wherein the directing unit is a platform-shaped hollow body having an upper end surface and a lower end surface, and an area of the upper end surface is less than an area of the lower end surface, the directing units are arranged in a convergent array.

4. The desktop 3D display system according to claim 1 , wherein the aperture and the lens are closely attached at a contact interface.

5. The desktop 3D display system according to claim 1 , wherein the display optimizing module is a holographic functional screen.

6. The desktop 3D display system according to claim 1 , wherein after the light emitted by the integral imaging source displayed on the 2D image display module is directed by the viewing angle directing module and is modulated by the light modulating module; the light is visible in the viewing area defined by the horizontal viewing angle θ h and the vertical viewing angle θ v , wherein the horizontal viewing angle θ h and the vertical viewing angle θ v respectively satisfy the following equations (1) and (2):

θ
h

=

2
⁢
arctan
⁢

l
⁢
sin
⁢
θ

2
⁢
h

(
1
)

θ
v

=

arctan
⁡

(

h

(

h
/
tan

⁢

⁢
θ

)

-

w
/
2

)

-

arctan
⁡

(

h

h
/
tan

⁢
θ

+

w
/
2

)

(
2
)

wherein a length l and a width w of the modulating hole of the single directing unit are respectively constrained by the above equations (1) and (2), a height h of the modulating hole of the directing unit, a distance g from a principal plane of the lens array to an imaging plane of the 2D image display module, a pitch p 1 between the adjacent directing units, a thickness p 0 of a wall of the directing unit, and a diameter D of the lens in the lens array further satisfy:
h=g   (3)

p 1 −p 0 ≥D   (4).

7. The desktop 3D display system according to claim 1 , wherein the number of the directing units is equal to or greater than the number of the element images of the element image arrays.

8. The desktop 3D display system according to claim 1 , wherein the 2D image display module comprises a projector and a receivi

Assignees

• Univ Beihang
• Univ Sichuan

Inventors

• Wang Qionghua
• Luo Ling
• Deng Huan
• Ren Hui
• Zhao Min
• Li Sai

Classifications

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• H04N13/307

  using fly-eye lenses, e.g. arrangements of circular lenses · CPC title

• H04N13/305

  using lenticular lenses, e.g. arrangements of cylindrical lenses · CPC title

• G02B5/0252

  using holographic or diffractive means · CPC title

• H04N13/398

  Synchronisation thereof; Control thereof · CPC title