CN214480963U

CN214480963U - Video conference system

Info

Publication number: CN214480963U
Application number: CN202120788407.0U
Authority: CN
Inventors: 周永业
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-18
Filing date: 2021-04-18
Publication date: 2021-10-22
Anticipated expiration: 2031-04-18

Abstract

The utility model is suitable for a video technical field provides a video conferencing system and self-luminous type display device. The video conference system includes: the light emitting side of the display device is the side where the user is located; the display device is provided with a light-transmitting area, and the light-transmitting area allows light on the light-emitting side to penetrate to the backlight side; the camera is positioned on the backlight side of the display device, the optical axis of the camera is parallel to the plane where the display device is positioned, and the camera is used for shooting a video image of a user positioned on the light emitting side; the periscope type optical assembly is positioned on the backlight side of the display device and used for guiding the image of the user positioned on the light emitting side to the range of the lens of the camera through the light transmitting area. The utility model provides a scheme is convenient for be integrated as all-in-one with display device and camera, and final integrated product can not be too thick, and convenient installation uses places such as office or family, and is very practical.

Description

Video conference system

Technical Field

The utility model belongs to the technical field of the video, especially, relate to a video conference system.

Background

A video conference system, also called a video conference system, refers to a system in which two or more individuals or groups in different places transmit audio, video and file data to each other through a transmission line and multimedia devices, so as to realize real-time and interactive communication and thus realize a teleconference. The video conference system can see the expression and the action of the opposite party besides the opposite party and carry out the language communication, so that the participants in different places can communicate in the same conference room.

The current video conference system strives to carry out accurate eye-to-eye communication on the basis of seeing the expression and the action of the other party so as to build a face-to-face conference effect. For example, patent No. CN 201810069356.9 discloses a video conference system, which is configured as shown in fig. 1, a transparent screen 102 separates a local participant from a camera 103, a projector 101 carries a received video signal of an opposite participant in a projection beam of the transparent screen 102, the local participant can see the expression, action, gaze, etc. of the opposite participant through a projection image of the transparent screen 102, and the camera 103 can shoot the gaze of the local participant through the transparent screen 102 and transmit the gaze to the opposite participant, wherein 104 and 105 represent polarizing plates with orthogonal polarization states. However, the video conference system shown in fig. 1 requires a projector to be matched with the transparent projection screen, and has a complicated structure, occupies a space, and has low image contrast because the transparent projection screen is easily affected by ambient light.

There is also a technique of employing a self-luminous type display device 202 instead of the transparent projection screen 102 in fig. 1 and omitting the projector 101, as shown in fig. 2, which is improved in contrast of an image but because the camera 103 is directly mounted on the rear surface of the self-luminous type display device 202. If camera 103 is set up in the relatively distant place in the light-emitting type self-luminous type display device 202 back, be not convenient for become the product of an all-in-one machine with light-emitting type self-luminous type display device 202 with camera 103, or make the all-in-one machine become very thick, be unfavorable for the utilization to the space in the use place, consequently for making camera 103 and light-emitting type self-luminous type display device 202 can be integrated into a relatively thin all-in-one machine, can press close to camera 103 at the back installation of initiative light-emitting type self-luminous type display device 202 usually. However, the problem of lack of spatial sense is caused by too close distance between the camera 103 and the active light-emitting self-luminous display device 202, for example, as shown in fig. 3A and 3B, when the present participant stretches his/her grip toward the light-emitting self-luminous display device 202 as shown in fig. 3A, the participant is close to the camera 103, and the hand is infinitely enlarged as shown in fig. 3B, which destroys the sense of appropriate spatial distance between the two parties.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is for how to provide a video conference system that occupation space is little and can build suitable space distance sense between the participant.

In order to solve the technical problem, the utility model provides a video conference system, include:

the light emitting side of the display device is the side where the user is located;

the camera is positioned on the backlight side of the display device, the optical axis of the camera is parallel to the plane where the display device is positioned, and the camera is used for shooting a video image of a user positioned on the light emitting side;

the periscope type optical assembly is positioned on the backlight side of the display device and used for guiding the image of the user positioned on the light emitting side to the range of the lens of the camera through the light transmitting area;

and the communication device is used for receiving the video images of other participants to be displayed on the display device, is also connected with the camera and sends the video images shot by the camera to the video conference systems of other participants.

Further, the periscope type optical assembly comprises a reflector, and a reflecting surface of the reflector is inclined towards the lens of the camera.

Further, the periscope type optical assembly comprises an angle adjusting device connected with the reflecting mirror and used for adjusting the pitching inclination angle of the reflecting mirror in the vertical direction and/or controlling the reflecting mirror to transversely rotate left and right.

Further, the camera is an automatic focusing camera.

Further, the display device is a self-luminous display device, and the self-luminous display device is connected with the communication device; the self-luminous display device is provided with a plurality of display pixels and is used for displaying the received video images of other participants for users positioned on the light emitting side to watch; the self-luminous display device is provided with a light transmitting area, and the light transmitting area allows light rays on the light emitting side to penetrate to the backlight side; and an anti-reflection layer is arranged on the surface of the packaging glass on the light-emitting side of the self-luminous display device.

Further, the anti-reflection layer is a coating layer coated on the surface of the packaging glass.

Further, the anti-reflection layer is an anti-reflection film pasted on the surface of the packaging glass.

Further, the display device is a transparent projection screen; the video conference system further comprises a projector connected with the communication device, and the projector is used for projecting video images of other participants to the transparent projection screen to realize projection type display.

The display device in the video conference system provided by the utility model can be applied to a self-luminous display device or a transparent projection screen, the lens direction of the camera positioned at the backlight side of the display device is set to be parallel to the plane where the display device is positioned, and the image of the user positioned at the light-emitting side is guided to the lens range of the camera through the periscope type optical component, so that the optical distance of the camera is increased under the condition that the distance between the camera and the display device is relatively close, and the reasonable distance feeling between the participant and the participant of the opposite party is made, in the design mode, because the distance between the camera and the display device is increased in the direction parallel to the display device, too much thickness is not needed to be increased, the display device and the camera can be integrated into an integrated machine, the final integrated product can not be too thick, and too much space is not needed to be occupied, the video conference system is convenient to be installed in the use places such as offices or families, is very practical.

Drawings

Fig. 1 is a block diagram of a first projection video conference system provided in the prior art;

fig. 2 is a block diagram of a second self-luminous video conference system provided by the prior art;

fig. 3A is a schematic view of the video conference system shown in fig. 2 when the present participant extends his or her hand toward the light-emitting type self-luminous display device;

fig. 3B is a schematic view of the present image observed by the opposite participant in the situation shown in fig. 3A;

fig. 4A and 4B are two structural diagrams of the video conference system provided by the present invention;

fig. 5 is a schematic view of an equivalent distance between the camera 402 and the self-luminous display apparatus 401 in the video conference system shown in fig. 4A and 4B;

FIG. 6 is a schematic view of the viewing effect using the video conferencing system of FIGS. 4A and 4B;

FIG. 7 is a schematic illustration of angular adjustment of a mirror in the video conferencing system of FIGS. 4A and 4B;

fig. 8 is a structural diagram of an OLED self-luminous display device provided by the present invention;

fig. 9 is a schematic diagram of the OLED self-luminous display device according to the present invention, in which light emitted from the OLED pixel is reflected back to the backlight side;

fig. 10 is a schematic diagram of the OLED self-luminous display device provided by the present invention, in which light emitted from the OLED pixel is reflected back to the backlight camera;

fig. 11 is a light path diagram of light emitted by an OLED pixel after an anti-reflection layer is used in the OLED self-luminous display device provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 4A and 4B, the video conference system provided by the embodiment of the present invention includes a display device 401, a camera 402, a periscope type optical assembly 403, and a communication device 404, wherein the light-emitting side of the display device 401 is the side where the user is located, the other side is the backlight side, and the camera 402, the periscope type optical assembly 403, and the communication device 404 are all located on the backlight side of the display device 401.

The display device 401 in fig. 4A is a self-luminous type display device provided with a plurality of display pixels and a light-transmitting area. The display pixels are used for displaying received video images of other participants for a user located on the light emitting side to watch, and the light transmitting areas allow light on the light emitting side to penetrate to the backlight side, and certainly allow light on the backlight side to penetrate to the light emitting side. The display device can be an OLED self-luminous display device and can also be a Micro-LED self-luminous display device. The self-luminous display device is connected to the communication device 404, and the communication device 404 is configured to receive video images of other participants and send the video images to the self-luminous display device 401, and the video images are displayed by the self-luminous display device 401 to be viewed by a user located on the light emitting side. The communication device 404 is also connected to the camera 402 and transmits the video images captured by the camera 402 to the video conference systems of the other participants.

The display device 401 in fig. 4B is a transparent projection screen, and therefore, a projector 4011 is further provided, and the projector 4011 is connected to the communication device 404. The communication device 404 is configured to receive the video images of other participants and send the video images to the projector 4011, and then the projector 4011 projects the video images of other participants onto the transparent projection screen to implement projection display. The communication device 404 is also connected to the camera 402 and transmits the video images captured by the camera 402 to the video conference systems of the other participants. Since the projection screen is transparent, the camera 402 on the backlight side will more easily capture video images of the user on the light-exiting side.

The optical axis of the camera 402 is parallel to the plane where the display device 401 is located, and an image acquisition chip such as a CMOS or a CCD is built in the camera 402 and is used for capturing a video image of a user located on the light outgoing side. The direction of the "optical axis" of the camera 402 is a direction perpendicular to the lens of the camera 402, that is, the shooting view direction of the camera 402 is parallel to the plane of the display device 401, and the vertical direction in fig. 4A and 4B is the direction of the "optical axis" of the camera 402.

Since the lens direction of the camera 402 is not aligned with the display device 401, a periscope type optical assembly 403 is required to guide the image of the user located on the light outgoing side of the display device 401 into the lens range of the camera 402. The periscope type optical assembly 403 is used to extend the optical distance between the camera 402 and the user located on the light-emitting side without increasing the overall thickness of the product, so the specific structure of the periscope type optical assembly 403 is not limited, and a device with a reflection function such as a reflector can be selected to reflect the image of the user on the light-emitting side into the lens range of the camera 402.

In fig. 4A and 4B, periscope optics 403 includes a mirror with a reflective surface that is tilted toward the lens of camera 402 and at a 45 degree angle to the plane of display 401. In particular, the number of reflections can be flexibly set in the periscope type optical assembly 403 according to actual needs, for example, a plurality of mirrors can be set to reflect the light multiple times, and finally the light enters the lens range of the camera 402.

In addition, the lens direction of the camera 402 in fig. 4 is upward, and actually may be both upward and downward (even toward the left or right), except that the video images captured by the camera 402 in these two directions will be one upward and one downward, and corresponding image processing needs to be performed in the camera 402.

In the video conference system shown in fig. 4A and 4B, the equivalent distance between the camera 402 and the display device 401 is as shown in fig. 5, that is, the effect of the video image captured by the camera 402 in fig. 4A and 4B is equivalent to the camera 402a in fig. 5. However, if the camera 402 is directly positioned according to 402a in fig. 5, the whole video conference system is thick and impractical when the self-luminous display device 401 and the camera 402 are integrated into an integrated product, and the occupied space is large, which is inconvenient for installation or wall hanging.

The viewing effect of the video conference system shown in fig. 4A and 4B is shown in fig. 6, and it is obvious that the video conference system shown in fig. 4A and 4B can increase the optical distance of the camera 402 under the condition that the camera 402 is closer to the self-luminous display device 401, so as to create the sense of reasonable distance between the participant of the present party and the participant of the opposite party.

In conclusion, the distance between the camera 402 and the self-luminous display device 401 is increased in the direction parallel to the self-luminous display device, so that too much thickness is not required to be increased, the display screen and the camera can be integrated into an integrated machine, the final integrated product is not too thick, too much space is not required to be occupied, and the self-luminous display device is convenient to install in use places such as offices or families and is very practical.

Considering that the positions of the participants in front of the display device 401 may vary and the used places may have various sizes, it is necessary to adjust the angles of the mirrors to suit the conference sites of various sizes. Further, the periscope type optical assembly 403 further includes an angle adjusting device connected to the mirror for adjusting a pitch angle of the mirror in a vertical direction. No matter the angle of the reflector is adjusted, the position of the camera 402 and the distance between the camera 402 and the reflector are not changed, fig. 7 shows that when the angle of the reflector is fine-tuned, the equivalent position and angle of the camera 402 will change, wherein the position of the camera shown by the dotted line is the equivalent position of the camera 402. If the mirror is tilted 5 degrees forward and downward based on 45 degrees, the optical axis 11 indicated by the solid line is tilted 10 degrees downward (2 times relationship), the solid line 12 indicates that the distance and relative position between the center point of the mirror and the camera 402 are not changed, the dotted line 13 indicates that the equivalent position of the camera 402 is raised, and the optical axis indicated by the dotted line 13 extends along the optical axis 11 and is similarly tilted 10 degrees.

The angle adjusting device connected to the mirror may also rotate the periscope type optical unit 403 horizontally to the left and right, to accommodate the possibility of the position of the participant moving to the left and right.

Further, the camera 402 may be an auto-focusing camera, and when the position of the whole or part of the user is found to change relative to the display device 401, the camera may be automatically focused again on the basis of the periscope-type optical assembly 403, so as to provide a more reasonable viewing distance and a continuous clear image of the face for the participants of the opposite party.

For the case of the OLED or Micro-LED self-light emitting display device shown in fig. 4A, further improvement can be made to reduce the phenomenon that light emitted by OLED pixel points or Micro-LED pixel points is reflected to the camera on the surface of the encapsulation glass to interfere with shooting by the camera 402.

Specifically, fig. 8-11 illustrate the structure of the self-luminous display device 401 by taking the OLED structure as an example, the position of the light-transmitting area therein can be flexibly designed according to the need, for example, one light-transmitting area can be provided beside each display pixel, as shown in fig. 8. The upper transparent packaging glass 31 and the lower transparent packaging glass 32 are sealed by frame glue 33, the middle of the upper transparent packaging glass is sealed with an OLED display pixel layer 34 and a driving circuit layer 35, each display pixel 34 comprises an OLED light emitting layer formed by RGB three primary color pixels, light transmission areas 36 are arranged on the left side and the right side of each display pixel 34, and light on the two sides of the OLED self-luminous display device 401 can penetrate through the light transmission areas 36 in two directions.

The thicknesses of the OLED display pixel 34 layer and the driving circuit layer 35 are actually very small, and are only about 0.1mm (100 micrometers) or less, but the thicknesses of the upper transparent encapsulation glass 31 and the lower transparent encapsulation glass 32 can be several millimeters, for example, 1.0mm to 4.0mm, and the larger the display screen area is, the thicker the required encapsulation glass is, and the protection effect is achieved.

When light emitted by the OLED pixel points passes through the upper transparent packaging glass 31 and goes towards the user, the light is reflected by the outer surface of the upper transparent packaging glass 31 (i.e. the surface of the glass facing the user), and then passes through the light transmission area and then is emitted to the camera 402 behind the OLED self-luminous display device 401, as shown in fig. 9 and 10, the interference is caused to the image shot by the camera 402, and the definition of the shot image is reduced, therefore, the anti-reflection layer 311 can be arranged on the surface of the upper transparent packaging glass 31 on the light emitting side, and the anti-reflection layer can be a film coating layer directly plated on the surface of the upper transparent packaging glass 31 or an anti-reflection film pasted on the surface of the upper transparent packaging glass 31. The anti-reflection layer 311 can greatly reduce the light reflected to the camera, eliminate the interference to the image, and generally reduce the light to below 2%.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A video conferencing system, comprising:

2. The video conferencing system of claim 1 wherein the periscopic optical assembly comprises a mirror having a reflective surface that is tilted toward the lens of the camera.

3. The video conferencing system of claim 2 wherein the periscope optics assembly includes angular adjustment means coupled to the mirror for adjusting the elevation tilt angle of the mirror in the vertical direction and/or for controlling lateral side-to-side rotation of the mirror.

4. The video conferencing system of claim 1, wherein the camera is an auto-focusing camera.

5. The video conferencing system of any of claims 1 to 4, wherein the display device is a self-luminous display device, the self-luminous display device being connected to the communication device; the self-luminous display device is provided with a plurality of display pixels and is used for displaying the received video images of other participants for users positioned on the light emitting side to watch; the self-luminous display device is provided with a light transmitting area, and the light transmitting area allows light rays on the light emitting side to penetrate to the backlight side;

and an anti-reflection layer is arranged on the surface of the packaging glass on the light-emitting side of the self-luminous display device.

6. The video conferencing system of claim 5, wherein the anti-glare layer is a coating on the surface of the encapsulating glass.

7. The videoconferencing system of claim 5 wherein the anti-glare layer is an anti-glare film affixed to the surface of the encapsulating glass.

8. The video conferencing system of any of claims 1 to 4, wherein the display device is a transparent projection screen;

the video conference system further comprises a projector connected with the communication device, and the projector is used for projecting video images of other participants to the transparent projection screen to realize projection type display.