Virtual reality display device, display device, and calculation method of line-of-sight angle

Patent metadata

Field	Value
Publication number	US-11429184-B2
Application number	US-201916498687-A
Country	US
Kind code	B2
Filing date	Apr 1, 2019
Priority date	Apr 13, 2018
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

A virtual reality display device, a display device, and a calculation method of a line-of-sight angle are provided. The virtual reality display device includes: a display screen configured to display a picture to a user, at least one infrared light source, and an infrared camera; and the infrared camera is on a side of the display screen away from an eye of the user, and is configured to acquire an eye image of the eye of the user that is illuminated by the at least one infrared light source.

First claim

What is claimed is:

1. A virtual reality display device, comprising: a display screen configured to display a picture to a user, at least one infrared light source, and an infrared camera,
wherein the infrared camera is on a side of the display screen away from an eye of the user, and is configured to acquire an eye image of the eye of the user that is illuminated by the at least one infrared light source;
the virtual reality display device further comprises a support plate on the side of the display screen away from the eye of the user,
wherein the infrared camera is fixed to the support plate;
the virtual reality display device further comprises at least one visible light source located on an edge of a surface on a side of the display screen close to the support plate,
wherein the at least one visible light source is configured to provide backlight to the display screen; and
the virtual reality display device further comprises a transflective film, wherein the transflective film is between the at least one visible light source and the support plate, and the transflective film transmits infrared light and reflect visible light.

2. The virtual reality display device according to claim 1 , wherein the support plate comprises a central hollow opening, and the infrared camera is in the central hollow opening.

3. The virtual reality display device according to claim 1 , further comprising at least one visible light source fixed to a side of the support plate close to the display screen, wherein the at least one visible light source is configured to provide backlight to the display screen.

4. The virtual reality display device according to claim 3 , wherein the at least one visible light source comprises a plurality of visible light sources, and the plurality of visible light sources are arranged in an array on the support plate.

5. The virtual reality display device according to claim 1 , wherein the transflective film is on a surface on a side of the support plate close to the display screen.

6. The virtual reality display device according to claim 1 , wherein the at least one infrared light source is on a side of the support plate close to the display screen.

7. The virtual reality display device according to claim 6 , wherein the at least one infrared light source comprises four infrared light sources, and the four infrared light sources are distributed around the infrared camera.

8. The virtual reality display device according to claim 7 , wherein the four infrared light sources are evenly distributed around the infrared camera.

9. The virtual reality display device according to claim 1 , wherein the display screen has a plurality of symmetry axes, and the infrared camera is, on the support plate, at a position which overlaps with an intersection of the plurality of symmetry axes.

10. The virtual reality display device according to claim 1 , further comprising a lens tube,
wherein the display screen is at an end of the lens tube away from the eye of the user.

11. The virtual reality display device according to claim 10 , wherein an end of the lens tube close to the eye of the user is provided with the at least one infrared light source.

12. The virtual reality display device according to claim 10 , further comprising a lens,
wherein the lens is at an end of the lens tube close to the eye of the user, and is configured to image the picture displayed by the display screen.

13. The virtual reality display device according to claim 12 , wherein the lens comprises a micro-lens array.

14. The virtual reality display device according to claim 1 , wherein the display screen is capable of transmitting infrared light emitted by the at least one infrared light source.

15. A calculation method of a line-of-sight angle, comprising:
acquiring, by the virtual reality display device according to claim 1 , the eye image of the eye of the user that is illuminated by the at least one infrared light source;
processing the eye image to obtain a pupil position on the eye image; and
calculating the line-of-sight angle of the user according to the pupil position.

16. A display device, comprising the virtual reality display device according to claim 1 .

17. The display device according to claim 16 , further comprising a processor and a memory,
wherein the memory comprises one or more computer program modules, the one or more computer program modules are stored in the memory and configured to be executed by the processor, and the one or more computer program modules are executed by the processor to perform:
acquiring, by the virtual reality display device, the eye image of the eye of the user that is illuminated by the at least one infrared light source;
processing the eye image to obtain a pupil position on the eye image; and
calculating a line-of-sight angle of the user according to the pupil position.

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Ma Zhanshan
• Tian Wenhong
• Wang Chenru
• Zhang Hao
• Jing Haoran
• Sun Zhiyu
• Zheng Chao
• Zhao Bin
• Ge Zheng

Classifications

• G06V40/19

  Sensors therefor · CPC title

• G06V10/143

  Sensing or illuminating at different wavelengths · CPC title

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H04N23/56

  provided with illuminating means · CPC title

• G02B27/0093

  with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking · CPC title