Imaging system having a polarization element

Patent metadata

Field	Value
Publication number	US-9778556-B2
Application number	US-201514936373-A
Country	US
Kind code	B2
Filing date	Nov 9, 2015
Priority date	Nov 18, 2014
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

Embodiments of the present invention provide an imaging system, including: a first polarization element having a first polarization direction; a second polarization element having a second polarization direction; a third polarization element, where the third polarization element has multiple areas that respectively correspond to multiple pixel positions, each area in the multiple areas consists of a first semi-area and a second semi-area; a first projection device, projecting an image onto the multiple areas by using the first polarization element and based on the multiple pixel positions; and a second projection device, projecting an image onto the multiple areas by using the second polarization element and based on the multiple pixel positions. In the embodiments of the present invention, images from multiple views may be presented, by using a polarization element, in areas corresponding to pixel positions, which, therefore, can improve imaging resolution.

First claim

What is claimed is:

1. An imaging system, comprising:
a first polarization element having a first polarization direction;
a second polarization element having a second polarization direction, wherein the second polarization direction is different from the first polarization direction;
a third polarization element including:
a first area that includes a first semi-area and a second semi-area, wherein the first semi-area of the first area has the first polarization direction, and the second semi-area of the first area has the second polarization direction,
a second area that includes a first semi-area and a second semi-area, wherein the first semi-area of the second area has the first polarization direction, and the second semi-area of the second area has the second polarization direction, and
a third area that includes a first semi-area and a second semi-area, wherein the first semi-area of the third area has the first polarization direction, and the second semi-area of the third area has the second polarization direction;

a first projection device that projects, by using the first polarization element, a first image onto the first area, a third image onto the second area, and a fifth image onto the third area;
a second projection device that projects, by using the second polarization element, a second image onto the first area, a fourth image onto the second area, and a sixth image onto the third area,
wherein the second area of the third polarization element is adjacent to the first area of the third polarization element in a first direction, such that the first semi-area of the first area is adjacent to the first semi-area of the second area, and the second semi-area of the first area is adjacent to the second semi-area of the second area, and
wherein the third area of the third polarization element is adjacent to the first area of the third polarization element in a second direction perpendicular to the first direction, such that the second semi-area of the third area is adjacent to the second semi-area of the first area.

2. The system according to claim 1 , wherein:
the first image is based on a first view of a first object,
the second image is based on a second view of the first object, and
the first view of the first object is different from the second view of the first object.

3. The system according to claim 2 , wherein:
the third image is based on a third view of a second object, and
the fourth image is based on a fourth view of the second object, and the third view of the second object is different from the fourth view of the second object.

4. The system according to claim 1 , further comprising:
a columnar lens layer, wherein the third polarization element is disposed between the columnar lens layer and the first polarization element.

5. The system according to claim 1 , wherein:
the first image is based on a first view of a third object,
the second image is based on a second view of the third object, and
the first view of the third object is identical to the second view of the third object.

6. The system according to claim 1 , wherein the first polarization direction is perpendicular to the second polarization direction.

7. The system according to claim 1 , wherein the third polarization element is a polarization grating.

8. The system according to claim 1 , wherein the third polarization element is a switchable liquid crystal.

9. The system according to claim 1 , further comprising:
a scatter, wherein the third polarization element is disposed between the scatter and the first polarization element.

10. The system according to claim 1 , further comprising:
a columnar lens layer, wherein the third polarization element is disposed between the columnar lens layer and the second polarization element.

11. The system according to claim 1 , further comprising:
a scatter, wherein the third polarization element is disposed between the scatter and the second polarization element.

Assignees

• Huawei Tech Co Ltd

Inventors

• Khromov Maxim
• Petrov Nikolay
• Nikitin Vladislav
• Xie Qingpeng

Classifications

• G03B35/26 Primary

  using polarised or coloured light separating different viewpoint images · CPC title

• G03B35/20

  using two or more projectors · CPC title

• H04N13/305

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

• G03B35/24

  using apertured or refractive resolving means on screens or between screen and eye · CPC title

• H04N13/31

  using parallax barriers · CPC title