Binocular See-Through Augmented Reality (AR) Head Mounted Display Device Which is Able to Automatically Adjust Depth of Field and Depth Of Field Adjustment Method ThereforT

• US 20180031848A1
• Filed: 08/07/2015
• Published: 02/01/2018
• Est. Priority Date: 01/21/2015
• Status: Abandoned Application

• Current Assignee: Chengdu CK Technology Co., Ltd.
• Original Assignee: Chengdu CK Technology Co., Ltd.
• Inventors: Huang, Qinhua, Song, Haitao
• Application Number:
  US15/545,324
• Publication Number:
  US 20180031848A1
• Time in Patent Office: Days
• CPC Class Codes: G02B 2027/0127 comprising devices increasing the depth of field
• CPC Class Codes: G02B 2027/0134 of stereoscopic type
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0181 Adaptation to the pilot/driver
• CPC Class Codes: G02B 2027/0187 slaved to motion of at least a part of the body of the user, e.g. head, eye
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0179 Display position adjusting means not related to the information to be displayed
• CPC Class Codes: G06T 7/593 from stereo images

Abstract

A depth of field adjustment method for a binocular see-through AR head-mounted display device includes steps of: obtaining a distance dis between a target object and human eyes (204); making a distance L_n between a virtual image formed by effective display information through optical systems and the human eyes (204) equivalent to the distance dis between the target object and the human eyes (204); according to the distance L_n between the virtual image and the human eyes (204) and a preset distance mapping relationship δ, obtaining an equivalent center distance d_n between left and right groups of the effective display information; and according to the equivalent center distance d_n, displaying information source images required to be displayed of virtual information respectively on left and right image display sources (201a, 201b). A binocular see-through AR head-mounted display device is further provided.

Claims

1. A depth of field adjustment method for a binocular see-through augmented reality (AR) head-mounted display device, comprising steps of:

obtaining a distance dis between a target object and human eyes;

making a distance L_n between a virtual image and the human eyes equivalent to the distance dis between the target object and the human eyes, wherein the virtual image is formed by effective display information through optical systems; and

, according to the distance L_n between the virtual image and the human eyes and a preset distance mapping relationship δ

, obtaining an equivalent center distance d_n between left and right groups of the effective display information, wherein the preset distance mapping relationship δ

represents a mapping relationship between the equivalent center distance d_n and the distance L_n between the virtual image and the human eyes; and

according to the equivalent center distance d_n, displaying information source images required to be displayed of virtual information respectively on left and right image display sources.

2. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 1, wherein the distance dis between the target object and the human eyes is obtained through a stereo vision system.

3. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 2, wherein the distance dis between the target object and the human eyes is determined according to an expression of:

4. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 1, wherein:

through a gaze tracking system, spatial gaze information data when the human eyes are gazing at the target object are detected, and according to the spatial gaze information data, the distance dis between the target object and the human eyes is determined.

5. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 4, wherein:

the distance dis between the target object and the human eyes is determined according to an expression of;

6. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 1, wherein the distance dis between the target object and the human eyes is determined through a camera imaging ratio.

7. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 1, wherein the distance dis between the target object and the human eyes is determined through a field of depth camera.

8. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 1, wherein:

through presetting a display position of the virtual information on a left side or a right side, combined with the equivalent center distance d_n, the display position of the virtual information on the right side or the left side is determined; and

, according to the display positions of the virtual information on the left and right sides, the information source images of the virtual information on the left and right sides are respectively displayed on the left image display source and the right image display source.

9. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 1, wherein:

according to the equivalent center distance d_n, with a preset point as an equivalent center symmetry point, the information source images required to be displayed of the virtual information are respectively displayed on the left and right image display sources.

10. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 1, wherein:

the preset distance mapping relationship δ

is a functional expression, a discrete data relationship or a relationship between a projection distance range and the equivalent center distance d_n.

11. The depth of field adjustment method for the binocular see-through AR head-mounted display device, as recited in claim 10, wherein:

the preset distance mapping relationship δ

is the functional expression, expressed as;

12. A binocular see-through AR head-mounted display device which is able to automatically adjust a depth of field, comprising:

optical systems;

image display sources, comprising a left image display source and a right image display source;

a distance data collecting module, for obtaining related data of a distance dis between a target object and human eyes; and

a data processing module, which is connected with the distance data collecting module, for determining the distance dis between the target object and the human eyes according to the related data of the distance dis between the target object and the human eyes, for determining a distance L_n between a virtual image and the human eyes according to the distance dis between the target object and the human eyes, for obtaining an equivalent center distance d_n between left and right groups of effective display information corresponding to the distance dis between the target object and the human eyes through combining with a preset distance mapping relationship δ

, and for displaying information source images required to be displayed of virtual information respectively on the left and right image display sources according to the equivalent center distance d_n;

wherein;

the preset distance mapping relationship δ

represents a mapping relationship between the equivalent center distance d_n and the distance L_n between the virtual image and the human eyes.

13. The binocular see-through AR head-mounted display device which is able to automatically adjust the depth of field, as recited in claim 12, wherein the distance data collecting module is a single camera, a stereo vision system, a depth of field camera or a gaze tracking system.

14. The binocular see-through AR head-mounted display device which is able to automatically adjust the depth of field, as recited in claim 12, wherein:

the data processing module determines a display position of the virtual information on a right side or a left side through presetting the display position of the virtual information on the left side or the right side combined with the equivalent center distance d_n, and according to the display positions of the virtual information on the left and right sides, displays the information source images of the virtual information on the left and right sides respectively on the left image display source and the right image display source.

15. The binocular see-through AR head-mounted display device which is able to automatically adjust the depth of field, as recited in claim 12, wherein:

with a preset point as an equivalent center symmetry point, according to the equivalent center distance d_n, the data processing module displays the information source images required to be displayed of the virtual information respectively on the left and right image display sources.

16. The binocular see-through AR head-mounted display device which is able to automatically adjust the depth of field, as recited in claim 12, wherein:

the preset distance mapping relationship δ

is a functional expression, a discrete data relationship or a relationship between a projection distance range and the equivalent center distance d_n.

17. The binocular see-through AR head-mounted display device which is able to automatically adjust the depth of field, as recited in claim 16, wherein the preset distance mapping relationship δ

is the functional expression, expressed as;