Floating touch camera module, electronic device and touch method

Patent metadata

Field	Value
Publication number	US-11570343-B2
Application number	US-201916647644-A
Country	US
Kind code	B2
Filing date	Mar 22, 2019
Priority date	Mar 26, 2018
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

The present disclosure provides a floating touch camera module, a display device and a touch method. The floating touch camera module includes: a lens with a light collection surface and a light emitting surface; an image sensor at one side of the light emitting surface of the lens, the image sensor configured to receive light rays from the lens and form sensing information; and an infrared cut filter film at one side of a light incident surface of the image sensor and configured to filter out infrared light rays. The infrared cut filter film is movable relative to the lens between a first position at which the infrared cut filter film directly faces the lens and a second position at which the infrared cut filter film is offset from the lens, thereby enabling the floating touch camera module to switch between a photographing mode and a touch mode.

First claim

What is claimed is:

1. An electronic device comprising:
a floating touch camera module comprising:
a lens with a light collection surface and a light emitting surface;
an image sensor at one side of the light emitting surface of the lens; wherein the image sensor is configured to receive light rays from the lens and form sensing information; and
an infrared cut filter film at one side of a light incident surface of the image sensor and configured to filter out infrared light rays;
wherein the infrared cut filter film is movable relative to the lens between a first position at which the infrared cut filter film directly faces the lens and a second position at which the infrared cut filter film is offset from the lens, to enable the floating touch camera module to switch between a photographing mode and a touch mode;
an image processor electrically coupled with the image sensor of the floating touch camera module;
wherein the image processor is configured to, process sensing information of the image sensor to obtain image information when the floating touch camera module is in the photographing mode; and, recognize sensing information of the image sensor to obtain gesture motion information when the floating touch camera module is in the touch mode;
wherein the image processor comprises a first recognizer coupled with the image sensor;
wherein the first recognizer is configured to, when the intensity of ambient light rays is less than or equal to the preset value, recognize and process first sensing information and second sensing information of the image sensor to obtain gesture motion information;
wherein the first sensing information is sensing information obtained by the image sensor when the infrared supplementary lighting lamp is on, and the second sensing information is sensing information obtained by the image sensor when the infrared supplementary lighting lamp is off.

2. The electronic device according to claim 1 , wherein the infrared cut filter film is at one side of the light collection surface of the lens.

3. The electronic device according to claim 1 , wherein the infrared cut filter film is between the light emitting surface of the lens and the light incident surface of the image sensor.

4. The electronic device according to claim 1 , wherein the floating touch camera module further comprises an anti-reflection film; the anti-reflection film is at one side of the light incident surface of the image sensor.

5. The electronic device according to claim 4 , wherein the anti-reflection film is at one side of the light collection surface of the lens.

6. The electronic device according to claim 5 , wherein the anti-reflection film is fixedly disposed at a position at which the anti-reflection film directly faces the lens.

7. The electronic device according to claim 5 , wherein the anti-reflection film is movable relative to the lens between a third position at which the anti-reflection film is offset from the lens and a fourth position at which the anti-reflection film directly faces the lens.

8. The electronic device according to claim 4 , wherein the anti-reflection film is between the light emitting surface of the lens and the light incident surface of the image sensor.

9. The electronic device according to claim 4 , wherein the anti-reflection film is a full-spectrum anti-reflection film.

10. The electronic device according to claim 4 , wherein the floating touch camera module further comprises a moving structure; the moving structure drives the infrared cut filter film to move relative to the lens between the first position and the second position; the moving structure drives the anti-reflection film to move relative to the lens between a third position at which the anti-reflection film is offset from the lens and a fourth position at which the anti-reflection film directly faces the lens.

11. The electronic device according to claim 1 , wherein the floating touch camera module further comprises a moving structure; the moving structure drives the infrared cut filter film to move relative to the lens between the first position and the second position.

12. The electronic device according to claim 1 , wherein the floating touch camera module further comprises:
a light intensity detector configured to detect intensity of ambient light rays; and
an infrared supplementary lighting lamp coupled with the light intensity detector and configured to emit infrared light rays to ambient environment when the intensity of ambient light rays is less than or equal to a preset value.

13. A touch method, applied to the electronic device according to claim 1 , comprising:
controlling the infrared cut filter film of the floating touch camera module of the electronic device to move from a first position at which the infrared cut filter film directly faces the lens of the floating touch camera module to a second position at which the infrared cut filter film is offset from the lens; and
recognizing sensing information of the image sensor of the floating touch camera module to obtain gesture motion information,
wherein recognizing sensing information of the image sensor of the floating touch camera module to obtain gesture motion information, comprises:
when the intensity of ambient light rays is less than or equal to the preset value, controlling the infrared supplementary lighting lamp of the floating touch camera module to flash;
using the image sensor to obtain first sensing information when the infrared supplementary lighting lamp is on and second sensing information when the infrared supplementary lighting lamp is off; and
recognizing and processing the first sensing information and the second sensing information of the image sensor to obtain gesture motion information.

14. The method according to claim 13 , wherein the floating touch camera module further comprises an anti-reflection film; and the method further comprises: controlling the anti-reflection film to directly face the lens.

15. The method according to claim 13 , wherein the floating touch camera module further comprises an anti-reflection film; and the method further comprises: controlling the anti-reflection film to move between a third position at which the anti-reflection film is offset from the lens and a fourth position at which the anti-reflection film directly faces the lens.

Assignees

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

Inventors

• Gao Fei
• Wang Xuerong
• Shi Lingyun
• Yu Lu
• Chen Lei
• Ma Junjie
• Feng Xuqing
• Cheng Pengfei
• Ma Xin
• Lu Yuanda
• Li Haixu

Classifications

• G06F3/0421

  by interrupting or reflecting a light beam, e.g. optical touch-screen · CPC title

• H04N5/2257 Primary

  Electricity · mapped topic

• H04M1/0264 Primary

  for a camera module assembly · CPC title

• H04N5/2254

  Electricity · mapped topic

• H04N23/667

  Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes · CPC title