Image display system

Patent metadata

Field	Value
Publication number	US-2019394436-A1
Application number	US-201916564921-A
Country	US
Kind code	A1
Filing date	Sep 9, 2019
Priority date	Mar 9, 2017
Publication date	Dec 26, 2019
Grant date	—

Abstract

An image display system is disclosed and includes: at least one first projection unit ( 112 ), configured to project rays of N images on a first plane, so that the rays of the N images are projected on N first regions of the first plane, where the N images are images of target object photographed based on N angles, and N≥2; and at least one first refraction unit ( 122 ), configured on the first plane, and configured to perform refraction processing on the rays of the images projected on the first regions, so that the rays of the N images are collected on a common display region. In this way, presentation of a three-dimensional image can adapt to a human eye viewing habit.

First claim

What is claimed is:

1 . An image display system, comprising:
at least one first projection unit, configured to project rays of N images on a first plane, so that the rays of the N images are projected on N first regions of the first plane, the N images are images of target scenery photographed based on N angles, and N≥2; and at least one first refraction unit, configured on the first plane, and configured to perform refraction processing on the rays of the images projected on the first regions, so that the rays of the N images are collected on a common display region.

2 . The image display system according to claim 1 , wherein there are N first refraction units, a first refraction unit i is configured on a first region i, and the first refraction unit i is configured to perform refraction processing on a ray of an image i projected on the first region i, wherein i∈[1, N], and refraction angles of refraction processing performed by the N first refraction units are the same.

3 . The image display system according to claim 1 , wherein each of the at least one first projection unit comprises a display unit and a zoom unit, wherein
the display unit is configured to: display at least one of the N images, and project a ray of the at least one image on the zoom unit; and the zoom unit is configured to zoom in or zoom out each of the at least one image.

4 . The image display system according to claim 3 , wherein there are N first projection units, and a first projection unit i is configured to project the ray of the image i, wherein i∈[1, N].

5 . The image display system according to claim 4 , wherein the first projection units are specifically configured to project the rays towards a first direction, wherein the first direction is perpendicular to or approximately perpendicular to the first plane.

6 . The image display system according to claim 5 , wherein optical axes of the N first refraction units intersect at a position O.

7 . The image display system according to claim 6 , wherein the N first refraction units are configured on a first arc-shaped region of the first plane, and
a projection of the intersection position O on the first plane is located at a center of a circle of the first arc-shaped region

8 . The image display system according to claim 6 , wherein a distance d between the first refraction unit i and a display unit of the first projection unit i is determined based on a distance L 1 between the first refraction unit i and a zoom unit of the first projection unit i, a focal length f of the zoom unit of the first projection unit i, and a distance L 2 between the intersection position O and the first refraction unit i, the first refraction unit i is configured on the first region i, the first refraction unit i is configured to perform refraction processing on the ray of the image i projected on the first region i, the first projection unit i is configured to project the ray of the image i, and i∈[1, N].

9 . The image display system according to claim 3 , wherein there is one first projection unit, and the first projection unit is configured to project the N images in N time periods;
the display unit is specifically configured to present the image i in the N images in a time period i, wherein i∈[1, N]; and the first projection unit further comprises a scanning unit, configured to: receive the ray of the image i in the time period i, and project the ray of the image i on the first region i.

10 . The image display system according to claim 9 , wherein the scanning unit comprises an optical path change unit and a rotary reflection unit, wherein
the optical path change unit is configured to: receive, in the time period i, the ray of the image i emitted by the zoom unit, and project the ray of the image i on the rotary reflection unit; and the rotary reflection unit is configured to project the ray of the image i on the first region i in the time period i.

11 . The image display system according to claim 10 , wherein the zoom unit is a lens; and
a size of the rotary reflection unit is determined based on a distance between the rotary reflection unit and the zoom unit in a direction of a main optical axis of the lens.

12 . The image display system according to any one of claim 1 , further comprising:
at least one second projection unit, configured to project rays of M images on a third plane, so that the rays of the M images are projected on M second regions of the third plane, the M images are images of the target object photographed based on M angles, M≥2, an axial center of a second arc-shaped region is the same as an axial center of the first arc-shaped region, and the third plane is parallel to the first plane; and at least one second refraction unit, configured on the third plane, wherein the second refraction unit is configured to perform refraction processing on the rays of the images projected on the second regions, so that the rays of the M images are collected on the common display region.

13 . The image display system according to claim 12 , wherein there are M second refraction units, and optical axes of the M second refraction units intersect at the intersection position O.

14 . The image display system according to claim 13 , wherein the first plane is the same as the third plane; and
a refraction angle φ of refraction processing performed by the second refraction unit is determined based on the refraction angle θ of refraction processing performed by the first refraction unit, a radius R 1 of the first annular region, a radius R 2 of the second annular region, and a distance D between the intersection position O and the first plane.

15 . The image display system according to claim 13 , wherein the distance L 1 between the intersection position O and the first region, the distance L 2 between the first plane and the zoom unit of the first projection unit, a distance L 3 between the intersection position O and the second region, and a distance L 4 between the third plane and a display unit of the second projection unit meet:
L 1 +L 2 =L 3 +L 4 .

Assignees

• Huawei Tech Co Ltd
• Cambridge Entpr Ltd

Inventors

• Jia Jia
• Chen Jhensi
• Chu Daping
• Yao Jun

Classifications

• G02B30/10

  using integral imaging methods · CPC title

• H04N9/3188

  Scale or resolution adjustment (scaling in general G06T3/40; resolution modifying circuits for displays in general G09G5/391) · CPC title

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• H04N13/383

  for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes · CPC title

• H04N9/3185 Primary

  Geometric adjustment, e.g. keystone or convergence (optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14) · CPC title