True three-dimensional volumetric imaging device and display device

Patent metadata

Field	Value
Publication number	US-9964773-B2
Application number	US-201414422836-A
Country	US
Kind code	B2
Filing date	Mar 17, 2014
Priority date	Feb 14, 2014
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A true three-dimensional volumetric imaging device includes an imaging light source, a light source adjusting unit, an imaging plate, and a movement driving unit. The light source adjusting unit is arranged between the imaging light source and the imaging plate, and the imaging plate is connected to the movement driving unit. A light beam emitted from the imaging light source is incident onto the imaging plate after being adjusted by the light source adjusting unit, and the movement driving unit causes the imaging plate to oscillate in a direction parallel to an outgoing direction of the light beam emitted from the imaging light source. In the true three-dimensional volumetric imaging device, the true three-dimensional volumetric display of an image is achieved. An algorithm herein is simpler, and a more complete volumetric object can be shown.

First claim

What is claimed is:

1. A true three-dimensional volumetric imaging device including an imaging light source, a light source adjusting unit, an imaging plate, and a movement driving unit, wherein, the light source adjusting unit is arranged between the imaging light source and the imaging plate, the imaging plate is connected to the movement driving unit, a light beam emitted from the imaging light source is incident onto the imaging plate after being adjusted by the light source adjusting unit, and the movement driving unit causes the imaging plate to oscillate in a direction parallel to an outgoing direction of the light beam emitted from the imaging light source;
wherein, the true three-dimensional volumetric imaging device further includes an imaging cavity, the movement driving unit includes at least two driving components which are arranged outside the a cavity wall of the imaging cavity with an interval therebetween, each of the driving components includes a motion connector which passes through the cavity wall of the imaging cavity to be physically connected to the imaging plate; and
the motion connector is a permanent magnet, each of the driving components further includes a support frame and a top electromagnet and a bottom electromagnet which are respectively arranged at a top and a bottom of the support frame, a straight line connecting between a center of the top electromagnet and a center of the bottom electromagnet is parallel to a direction along which the imaging plate oscillates along with the permanent magnet, the top electromagnet and the bottom electromagnet are separated from each other by the permanent magnet arranged between the top electromagnet and the bottom electromagnet, two induction coils are provided outside the top electromagnet and the bottom electromagnet, respectively, the two induction coils are separated from each other, the permanent magnets of the at least two driving components all pass through the cavity wall of the imaging cavity to be physically connected to the imaging plate, and during the imaging plate oscillating in the direction parallel to the outgoing direction of the light beam emitted from the imaging light source, the center of the top electromagnet, the center of the bottom electromagnet, and a center of a portion of the permanent magnet within the support frame are always located on the straight line.

2. The true three-dimensional volumetric imaging device according to claim 1 , wherein, an oscillation period of the imaging plate is less than a visual persistence period of human eyes.

3. The true three-dimensional volumetric imaging device according to claim 2 , wherein, the light source adjusting unit is a prism module, the light beam emitted from the imaging light source is at least partially incident onto the prism module, the prism module scans the light beam emitted from the imaging light source and adjusts a projection direction of the light beam, so that the light beam is projected onto different regions of the imaging plate.

4. The true three-dimensional volumetric imaging device according to claim 3 , wherein, the prism module includes a first prism and a second prism which are noncoplanar and cross each other, the light beam emitted from the imaging light source is at least incident onto a noncoplanar crossing region of the first prism and the second prism, and the first prism and the second prism are configured for rotating around their central axes, respectively.

5. The true three-dimensional volumetric imaging device according to claim 4 , wherein, the central axis of the first prism and the central axis of the second prism are noncoplanar and are perpendicular to each other.

6. The true three-dimensional volumetric imaging device according to claim 1 , wherein, the light source adjusting unit is a prism module, the light beam emitted from the imaging light source is at least partially incident onto the prism module, the prism module scans the light beam emitted from the imaging light source and adjusts a projection direction of the light beam, so that the light beam is projected onto different regions of the imaging plate.

7. The true three-dimensional volumetric imaging device according to claim 6 , wherein, the prism module includes a first prism and a second prism which are noncoplanar and cross each other, the light beam emitted from the imaging light source is at least incident onto a noncoplanar crossing region of the first prism and the second prism, and the first prism and the second prism are configured for rotating around their central axes, respectively.

8. The true three-dimensional volumetric imaging device according to claim 7 , wherein, the central axis of the first prism and the central axis of the second prism are noncoplanar and are perpendicular to each other.

9. The true three-dimensional volumetric imaging device according to claim 1 , wherein, the cavity wall of the imaging cavity is transparent, the imaging plate is arranged inside the imaging cavity, a wide surface of the imaging plate is perpendicular to a central axis of the imaging cavity, and the imaging plate is configured for oscillating in the imaging cavity along a direction parallel to the central axis of the imaging cavity.

10. The true three-dimensional volumetric imaging device according to claim 9 , wherein, a shape of the imaging cavity is a cylinder, a cube, a rectangular parallelepiped, or a triangular prism, and a shape of the imaging plate is the same as a cross-section shape of the imaging cavity.

11. The true three-dimensional volumetric imaging device according to claim 9 , wherein, the imaging light source is arranged outside the imaging cavity, the outgoing direction of the light beam emitted from the imaging light source is perpendicular to the imaging plate, and the imaging cavity is provided with a anti-reflection film at an outer side of the cavity wall which faces towards the imaging light source.

12. The true three-dimensional volumetric imaging device according to claim 9 , wherein, the imaging light source and the light source adjusting unit are located in a same light controlling shade, an opening of the light controlling shade faces towards the imaging cavity.

13. The true three-dimensional volumetric imaging device according to claim 1 , wherein, inside of the imaging cavity is vacuum, and a sealing element is further provided where the motion connector passes through the cavity wall of the imaging cavity to be physically connected to the imaging plate.

14. The true three-dimensional volumetric imaging device according to claim 1 , wherein, the imaging plate is made of a material having a diffuse reflection property and a diffuse transmission property.

15. The true three-dimensional volumetric imaging device according to claim 14 , wherein, the imaging plate includes a substrate made of plastic or resin having high tenacity or a substrate made of glass having high hardness and high tenacity, and two wide surfaces of the substrate are subjected to a roughing treatment or provided with scattering particles.

16. The true three-dimensional volumetric imaging device according to claim 1 , wherein, the true three-dimensional volumetric imaging device further includes an image data source, and the imaging light source is a laser source which emits a laser beam having a corresponding intensity and a corresponding duration according to the image data source.

17. The true three-dimensional volumetric imaging device according to claim 16 , wherein, the imaging light source includes at least one monochromatic laser source, and a number o

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wang Shang

Classifications

• G02B5/0289

  used as a transflector · CPC title

• G03B21/562

  Screens moving during projection (G03B21/58 - G03B21/62 take precedence) · CPC title

• G02B26/108

  having one or more prisms as scanning elements · CPC title

• G09F13/34

  with light sources co-operating with movable members, e.g. with shutters to cover or uncover the light source (apparatus wherein advertising or display material is moved in a continuous or intermittent succession G09F11/00; construction or details of lighting devices F21V11/00) · CPC title

• G02B30/54 Primary

  the three-dimensional [3D] volume being generated by moving a two-dimensional [2D] surface, e.g. by vibrating or rotating the 2D surface · CPC title