CN213461896U - Video auxiliary device and system - Google Patents

Abstract

The application provides a video auxiliary device and a system. The video auxiliary device includes: the fixing piece, the connecting piece, the first plane mirror and the second plane mirror are arranged on the base; the connecting piece comprises a first connecting piece and a second connecting piece; the second connecting piece is connected with the fixing piece; the first plane mirror is arranged on the first connecting piece; the second plane mirror is arranged on the second connecting piece; the reflecting surface of the first plane mirror and the reflecting surface of the second plane mirror are oppositely arranged, and an included angle between the reflecting surface of the first plane mirror and the reflecting surface of the second plane mirror is smaller than 90 degrees. The method and the device improve image pixels, can synchronously shoot the user images, and improve the experience effect of the video.

Description

Video auxiliary device and system

Technical Field

The present application relates to remote video technologies, and in particular, to a video auxiliary device and system.

Background

With the development of communication technology, remote video becomes a common mode in scenes such as office, teaching, meeting and the like. For example, in online teaching or remote tutoring, a student logs in a video call application or an online learning application using a User Equipment (UE) such as a smart phone, a tablet pc, or a personal computer, starts a front camera, and performs online tutoring and interaction with a teacher.

In some scenarios, it is also necessary to share the images of documents, textbooks, etc. placed on the desktop by the user to the other party, so the related art assembles an accessory on the front camera of the UE, where the accessory usually includes 1 plane mirror and 1 fixed part. Through the accessory, as shown in fig. 1, light rays from a desktop are reflected by the plane mirror and then enter the front camera, so that desktop images can be shot by the front camera, and desktop image sharing is realized.

However, the image pixels obtained by the technology are low, and the compressed image is transmitted to the other side, which may cause the situation that the picture is not clear, and in addition, the front-facing camera is used for shooting the desktop image, which cannot shoot the image of the current user, so that the other side cannot determine the real-time state of the user, and the experience effect of the video is influenced.

Disclosure of Invention

The application provides a video auxiliary device and system to improve image pixel, can shoot user's image simultaneously in step, promote video experience effect.

In a first aspect, the present application provides a video assistant apparatus comprising: the fixing piece, the connecting piece, the first plane mirror and the second plane mirror are arranged on the base; the connecting piece comprises a first connecting piece and a second connecting piece; the second connecting piece is connected with the fixing piece; the first plane mirror is arranged on the first connecting piece; the second plane mirror is arranged on the second connecting piece; the reflecting surface of the first plane mirror and the reflecting surface of the second plane mirror are oppositely arranged, and an included angle between the reflecting surface of the first plane mirror and the reflecting surface of the second plane mirror is smaller than 90 degrees.

The video auxiliary device provided by the application can reflect the input light through the reflecting surface of the first plane mirror, the reflected light enters the second plane mirror, the reflected light is reflected through the reflecting surface of the second plane mirror, the light enters the destination through multiple reflections of the light, and light path control is achieved.

In a possible implementation manner, the first connecting piece and the second connecting piece adopt a movable connection manner, and the relative position relationship between the first connecting piece and the second connecting piece is adjustable through the movable connection manner.

The first connecting piece and the second connecting piece are movably connected, so that different requirements of a user on light path control can be met, and meanwhile, fixing errors generated when the video auxiliary device is fixed on any equipment can be compensated.

In one possible implementation, the connecting piece further comprises an intermediate piece; the first connecting piece and the middle piece are movably connected, and the relative position relation between the first connecting piece and the middle piece can be adjusted through the movable connection; the intermediate part and the second connecting part adopt a movable connection mode, and the relative position relation between the intermediate part and the second connecting part can be adjusted through the movable connection mode.

The first connecting piece and the intermediate piece, and the second connecting piece and the intermediate piece are respectively in a movable connection mode, so that different requirements of a user on light path control can be met, and meanwhile, fixing errors generated when the video auxiliary device is fixed on any equipment can be compensated.

In one possible implementation, the movable connection means includes a screw connection or a universal wheel connection.

In one possible implementation, the connector further includes a screw; the second connecting piece and the fixing piece are fixedly connected through the screw.

In one possible implementation manner, the fixing member is fixed by interference fit, snap fixation, screw fixation or magnetic attraction fixation.

In a possible implementation manner, the fixing piece comprises two clamping feet, and the width of a gap between two side walls of any one of the clamping feet is less than 7.2 mm.

In one possible implementation, the fixing member includes a screw adjustment knob for adjusting tightness of the screw.

In a possible implementation manner, the first plane mirror and the second plane mirror are fixed on the connecting member by using an adhesive fixing or a clamping fixing manner.

In one possible implementation, the size of the first flat mirror is larger than the size of the second flat mirror.

In one possible implementation, the first plane mirror has a length of 80 mm, a width of 60 mm, and a thickness of 1 mm; and/or the second flat mirror is 20mm long, 20mm wide and 1 mm thick.

In one possible implementation, the peak-to-valley PV value of the first plane mirror is less than three wavelengths, and the plane mirror reflectivity PMR of the first plane mirror is greater than 95%; the peak-to-valley PV value of the second plane mirror is smaller than the wavelength, and the plane mirror reflectivity PMR of the first plane mirror is larger than 95%.

In one possible implementation manner, the adjustment range of the pitch angle of the first connecting piece relative to the second connecting piece is-30 degrees; and/or the adjustment range of the rotation angle of the first connecting piece relative to the second connecting piece is-30 degrees.

In one possible implementation manner, the adjustment range of the pitch angle of the first connecting piece relative to the middle piece is-30 degrees; the adjusting range of the rotating angle of the second connecting piece relative to the middle piece is-30 degrees to 30 degrees.

In one possible implementation, the size of the first connector is larger than the size of the second connector.

In one possible implementation, the first connecting member has a length of 88 mm, a width of 64 mm, and a thickness of 3 mm; the second connecting piece is 43 mm long, 30 mm wide and 4 mm thick.

In a possible implementation, the intermediate piece has a length of 32 mm, a width of 29 mm and a thickness of 5 mm.

In a possible implementation manner, the material of the connecting member is photosensitive resin.

In a second aspect, the present application provides a video assistant system comprising: the video assistant and the user equipment of any of the above first aspects; the user equipment comprises a rear camera; a fixing piece in the video auxiliary device is fixed at a preset position of the side edge of the user equipment; the second connecting piece and the second flat mirror are both positioned on the back side of the user equipment, the reflecting surface of the second flat mirror faces the rear camera of the user equipment, and a preset included angle is formed between the second flat mirror and the user equipment and is smaller than 90 degrees; the first plane mirror is positioned outside the user equipment, the reflecting surface of the first plane mirror faces the user equipment, a part of the first plane mirror is positioned in the back space of the user equipment, and a part of the first plane mirror is positioned in the front space of the user equipment; and the rear camera can acquire the scene in the front space of the user equipment through the reflecting surface of the second plane mirror and the reflecting surface of the first plane mirror.

The video auxiliary system comprises a video auxiliary device and a rear camera, wherein the video auxiliary device is used for controlling the light path of the video auxiliary device, the rear camera of the user equipment can acquire a scene in the front space of the user equipment through the reflecting surface of the second plane mirror and the reflecting surface of the first plane mirror, so that the rear camera of the user equipment can be used for shooting images in the front space of the user equipment, the resolution ratio of the rear camera is generally higher than that of the front camera and can reach 1300 ten thousand pixels, and compared with the prior art, the front space of the user equipment is shot by the front camera, the image pixels can be greatly improved, the imaging effect is good, and even smaller content details can be clearly displayed.

In a possible implementation manner, the preset position is located within a set range of a side edge of the user equipment, and a central point of the set range is directly opposite to the rear camera.

In a possible implementation manner, the preset position is opposite to the rear camera.

The video auxiliary device is fixed at the edge of the side part of the user equipment and in a certain range opposite to the rear camera, and particularly, the video auxiliary device is opposite to the rear camera, so that the rear camera of the user equipment can acquire a scene in a front space of the user equipment through the reflecting surface of the second plane mirror and the reflecting surface of the first plane mirror.

In one possible implementation, the preset included angle is 40 °.

In one possible implementation, the user equipment further includes a front camera and a screen.

The image of user equipment front side space can be shot with the leading camera that gets off in the sky in this application, especially faces the user's of camera image, can gather and show the image that leading camera and rear camera were shot simultaneously, promotes video experience effect.

Drawings

FIG. 1 is a schematic view of a prior art fitting;

fig. 2 is a schematic diagram of an exemplary structure of the video assistant apparatus 1 provided in the present application;

FIGS. 3a-3b are schematic views illustrating exemplary structures of the fastening manner of the fastening member 11;

fig. 4 is a schematic diagram of another exemplary structure of the video assistant apparatus 1 provided in the present application;

FIGS. 5a-5c are schematic diagrams of exemplary configurations of articulatable means;

fig. 6 is a schematic diagram of another exemplary structure of the video assistant apparatus 1 provided in the present application;

FIG. 7 is a schematic diagram of an exemplary configuration of a video assistant system provided herein;

FIGS. 8a-8b are schematic diagrams of an exemplary video assistant system provided herein;

FIG. 9 is a schematic diagram of a display interface according to the present application.

Detailed Description

To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description examples and claims of this application and in the drawings are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor order. Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such as a list of steps or elements.

The terms referred to in this application describe:

peak to valley (PV) values: an index of the surface uniformity of the flat mirror surface, a smaller PV value indicates a better surface uniformity of the flat mirror.

Plane Mirror Reflectivity (PMR): when light travels to the interface between two media, a part of the light will be reflected back to the original media, and the reflection of the light on the interface is called plane mirror reflection. The ratio of the energy taken away by the light reflected from a unit area per unit time to the energy incident upon the incident light is called the mirror reflectivity.

The video auxiliary device comprises a video processing unit, a video processing unit and a video processing unit, wherein the video processing unit is used for processing a video image, and the video image is compressed and transmitted to an opposite side. The structure and function of the video assistant apparatus will be explained below.

Fig. 2 is a schematic structural diagram of an exemplary video assistant apparatus 1 provided in the present application, and as shown in fig. 2, the video assistant apparatus 1 includes: a fixing member 11, a first flat mirror 12 (not shown), a second flat mirror 13, and a connecting member 14; wherein, the connecting member 14 includes a first connecting member 141 and a second connecting member 142; the second connecting member 142 is connected to the fixing member 11; the first plane mirror 12 is disposed on the first connecting member 141; the second flat mirror 13 is arranged on the second connecting piece 142; the reflecting surface of the first plane mirror 12 and the reflecting surface of the second plane mirror 13 are oppositely arranged, and the included angle between the reflecting surface of the first plane mirror 12 and the reflecting surface of the second plane mirror 13 is smaller than 90 degrees.

The reflecting surface of the first plane mirror 12 receives the first light, and reflects the first light to obtain a second light which enters the reflecting surface of the second plane mirror 13; the reflecting surface of the second plane mirror 13 receives the second light, and reflects the second light to obtain a third light. Thus, after the incident first light is reflected for multiple times, the light path of the first light can be changed, and the included angle between the reflecting surface of the first plane mirror and the emitting surface of the second plane mirror determines the angle of the change of the light path.

Optionally, the connecting member 14 further comprises a screw 143; the second connecting member 142 and the fixing member 11 are fixedly connected by a screw 143.

In one possible implementation, the fixing member 11 is fixed by interference fit, snap fixation, screw fixation or magnetic attraction fixation.

Fig. 3a-3b are schematic views illustrating exemplary structures of fixing manners of the fixing member 11. As shown in fig. 3a, the fixing member 11 includes two clamping legs 11a and 11b, and the two clamping legs 11a and 11b are clamped on the side edges of any equipment, so as to achieve the installation and fixation of the video auxiliary device in an interference fit manner. Illustratively, the width of the gap between the two side walls of the clip 11a is less than 7.2 mm, and the width of the gap between the two side walls of the clip 11b is less than 7.2 mm. As shown in fig. 3b, the fixing member 11 includes a screw adjusting knob 11c, the fixing member 11 is clamped on the side edge of any device, and the installation and fixation of the video auxiliary device are realized in a screw fixing manner by adjusting the tightness of the screw by adjusting the screw adjusting knob 11 c. The present application is not limited to any particular manner of attachment of the attachment member 11 to any device.

In a possible implementation manner, the first flat mirror 12 can be fixed on the first connecting member 141 by an adhesive fixing or a clamping fixing manner, and the second flat mirror 13 can also be fixed on the second connecting member 142 by an adhesive fixing or a clamping fixing manner.

In one possible implementation, the size of first flat mirror 12 is larger than the size of second flat mirror 13. Illustratively, the first plane mirror 12 has a length of 80 mm, a width of 60 mm, and a thickness of 1 mm. The second flat mirror 13 has a length of 20mm, a width of 20mm, and a thickness of 1 mm.

In one possible implementation, the PV value of first flat mirror 12 is less than three wavelengths (3 λ) and the PMR is greater than 95%, and the PV value of second flat mirror 13 is less than wavelengths (λ) and the PMR is greater than 95%.

In one possible implementation, the size of the first connection member 141 is larger than the size of the second connection member 142. Illustratively, the first connecting member 141 has a length of 88 mm, a width of 64 mm, and a thickness of 3 mm; the second link 142 has a length of 43 mm, a width of 30 mm and a thickness of 4 mm.

In one possible implementation, the material of the connecting member 14 may be photosensitive resin or the like.

The video auxiliary device provided by the application can reflect the input light through the reflecting surface of the first plane mirror, the reflected light enters the second plane mirror, the reflected light is reflected through the reflecting surface of the second plane mirror, the light enters the destination through multiple reflections of the light, and light path control is achieved.

Fig. 4 is another exemplary structural schematic diagram of the video assistant apparatus 1 provided in the present application, and as shown in fig. 4, on the basis of the apparatus shown in fig. 2, the first connecting member 141 and the second connecting member 142 adopt a moveable connection manner, and a relative position relationship between the first connecting member 141 and the second connecting member 142 is adjustable through the moveable connection manner.

In one possible implementation, the moveable connection can be implemented in various ways. Fig. 5a-5c are schematic diagrams of exemplary configurations of articulatable means. As shown in fig. 5a and 5b, the component 1 and the component 2 are fixed by screws, the relative position relationship between the component 1 and the component 2 can be adjusted by rotating the screws, the component 1 can be adjusted up and down relative to the component 2 in fig. 5a, and the component 1 can be adjusted left and right relative to the component 2 in fig. 5 b. As shown in fig. 5c, the component 1 and the component 2 are fixed by universal wheels, and the relative position relationship between the component 1 and the component 2 can be adjusted by rotating the component 1 or the component 2, so that the position of the component 1 or the component 2 can be adjusted in any direction.

In this embodiment, the component 1 may be the first connecting member 141, and the component 2 may be the second connecting member 142, or vice versa, which is not particularly limited. It should be noted that the moveable connection shown in fig. 5a to 5c is only an example, and does not limit the moveable connection, and the present application is not limited thereto. The following descriptions of the moveable connection mode can refer to the principle herein, and are not repeated.

In this embodiment, since the relative position relationship between the first connecting element 141 and the second connecting element 142 is adjustable, the included angle between the first flat mirror 12 disposed on the first connecting element 141 and the second flat mirror 13 disposed on the second connecting element 142 is also adjustable. Optionally, the position of the second flat mirror 13 is fixed, and the range of the pitch angle of the first flat mirror 12 relative to the second flat mirror 13 is adjustable between-30 ° and 30 °, and/or the range of the rotation angle of the first flat mirror 12 relative to the second flat mirror 13 is adjustable between-30 ° and 30 °. That is, the first plane mirror 12 can adjust its pitch angle up and down in the vertical direction; the first plane mirror 12 can also be rotated left and right in the same horizontal direction to adjust the rotation angle. The two angles are based on the movable connection manner between the first connection member 141 and the second connection member 142, and only one of the angles may be adjusted, or both of the angles may be adjusted. Therefore, different requirements of the user on light path control can be met, and meanwhile, the fixing error generated when the video auxiliary device 1 is fixed on any equipment can be made up.

Fig. 6 is a schematic view of another exemplary structure of the video assistant apparatus 1 provided in the present application, as shown in fig. 6, and in addition to the apparatus shown in fig. 2, the connecting member 14 further includes an intermediate member 144; the first connecting piece 141 and the middle piece 144 adopt a movable connecting mode, and the relative position relation between the first connecting piece 141 and the middle piece 144 can be adjusted through the movable connecting mode; the intermediate member 144 and the second connecting member 142 are movably connected, and the relative position relationship between the intermediate member 144 and the second connecting member 142 can be adjusted through the movable connection. Illustratively, the intermediate member 144 has a length of 32 mm, a width of 29 mm, and a thickness of 5 mm.

In this embodiment, reference may be made to fig. 5a to 5c for movable connection between the first connecting element 141 and the intermediate element 144, and between the intermediate element 144 and the second connecting element 142, which are not described herein again. Since the relative positions of the first connecting member 141 and the intermediate member 144, and the intermediate member 144 and the second connecting member 142 are adjustable, the included angle between the first flat mirror 12 disposed on the first connecting member 141 and the second flat mirror 13 disposed on the second connecting member 142 is also adjustable. Optionally, the position of the second flat mirror 13 is fixed, the adjustable range of the pitch angle of the first flat mirror 12 relative to the intermediate member 144 is-30 ° to 30 °, the adjustable range of the rotation angle of the intermediate member 144 relative to the second flat mirror 13 is-30 ° to 30 °, and the adjustable range of the rotation angle of the intermediate member 144 driving the first flat mirror 12 relative to the second flat mirror 13 is-30 ° to 30 °. That is, the first plane mirror 12 can adjust its pitch angle up and down in the vertical direction, and the first plane mirror 12 can rotate left and right in the same horizontal direction through the intermediate member 144 to adjust its rotation angle. These two angles are adjusted based on the movable connection between the first and intermediate members 141 and 144, and the intermediate member 144 and the second connecting member 142. Therefore, different requirements of the user on light path control can be met, and meanwhile, the fixing error generated when the video auxiliary device 1 is fixed on any equipment can be made up.

Fig. 7 is a schematic structural diagram of an exemplary video assistant system provided in the present application, and as shown in fig. 7, the video assistant system includes a video assistant apparatus 1 and a user equipment 2. Wherein the user equipment 2 comprises a rear camera (not shown).

The fixing member 11 of the video assistant device 1 is fixed to a predetermined position of the side edge of the user equipment 2. Optionally, the preset position is located in a set range of a side edge of the user equipment, and a central point of the set range is directly opposite to the rear camera, or the preset position is directly opposite to the rear camera. In this embodiment, the video auxiliary device 1 is fixed at the side edge of the user equipment 2 within a certain range opposite to the rear camera, and particularly, the video auxiliary device 1 faces the rear camera, so that the rear camera of the user equipment 2 can acquire a scene in the front space of the user equipment through the reflection surface of the second plane mirror 13 and the reflection surface of the first plane mirror 12. The fixing of the fixing member 11 to the user equipment 2 may be in the manner described with reference to fig. 3a or 3b, and will not be described herein.

The second connecting part 142 and the second flat mirror 13 are both located on the back side of the user equipment 2, the reflecting surface of the second flat mirror 13 faces the rear camera of the user equipment 2, and the second flat mirror 13 and the user equipment 2 form a preset included angle, which is smaller than 90 ° (preferably 40 °). The first plane mirror 12 is located outside the user equipment 2, a reflection surface of the first plane mirror 12 faces the user equipment 2, a part of the first plane mirror 12 is located in a back space of the user equipment 2, and a part of the first plane mirror 12 is located in a front space of the user equipment 2, so that the rear camera can acquire a scene in the front space of the user equipment 2 through the reflection surface of the second plane mirror 13 and the reflection surface of the first plane mirror 12.

In one possible implementation, the user equipment 2 further comprises a front facing camera 21 and a screen 22. The image of the space at the front side of the user equipment 2 is shot synchronously by the empty front camera 21, especially the image of the user facing the front camera 21, the images shot by the front camera and the rear camera can be collected and displayed simultaneously, and the experience effect of the video is improved.

Fig. 8a-8b are schematic diagrams illustrating an exemplary principle of the video auxiliary system provided by the present application, and as shown in fig. 8a, assuming that the user equipment 2 is vertically placed on a desktop, after the video auxiliary device 1 is fixed on the user equipment 2, a first light ray from the desktop in front of the screen of the user equipment 2 is incident on the first flat mirror 12, a second light ray reflected by the first flat mirror 12 is incident on the second flat mirror 13, and a third light ray reflected by the second flat mirror 13 is incident on the rear camera of the user equipment 2. Therefore, the rear camera of the user equipment 2 is matched with the video auxiliary device 1, and the desktop image can be captured. At the same time, the front camera that is overhead on the user device 2 can take a picture of the user who is video, as shown in fig. 8 b. Through the processing of the application program, the desktop image taken by the rear camera and the user image taken by the front camera can be synchronously displayed on the screen of the user equipment 2, as shown in fig. 9.

It should be noted that the video auxiliary apparatus 1 in this embodiment may adopt a structure shown in fig. 2, fig. 4, or fig. 6, for example, and the technical principle thereof is similar, and is not described herein again.

It can be seen that, in the video auxiliary system of the present application, through the optical path control of the video auxiliary device, the rear camera of the user equipment can acquire the scene in the front space of the user equipment through the reflection surface of the second plane mirror and the reflection surface of the first plane mirror, so that the image in the front space of the user equipment can be shot by the rear camera of the user equipment, and since the resolution of the rear camera is generally higher than that of the front camera and can reach 1300 ten thousand pixels, compared with the related art in which the front space of the user equipment is shot by the front camera, the image pixels can be greatly improved, the imaging effect is good, and even smaller content details can be clearly displayed. In addition, the empty front camera can synchronously shoot user images, and the experience effect of videos is improved.

The following describes the video auxiliary device proposed in the present application with a specific embodiment.

The first flat mirror has a size of 50mm x 50mm, a PV value of 2.8 λ and a PMR of 90%, and the second flat mirror has a size of 20mm x 20mm, a PV value of 0.9 λ and a PMR of 90%. In the initial state, the designed included angle between the first plane mirror and the second plane mirror is 62 °.

The first plane mirror and the pitching connecting piece are fixed by adopting glue, and fixing modes such as clamping and the like can also be adopted. The pitching connecting piece and the left-right rotating connecting piece are fixed by screws, and the pitching angle of the first plane mirror can be adjusted by rotating the screws. The left-right rotating connecting piece and the fixing piece are fixed by screws, and the left-right rotating angle of the first plane mirror can be adjusted by rotating the screws. The second plane mirror and the fixing piece are fixed by adopting viscose glue, and fixing modes such as clamping and the like can also be adopted.

The installation process of the video auxiliary device is as follows:

(1) video accessory pre-installation confirmation.

a. Whether the surfaces of the first plane mirror and the second plane mirror are clean or not is determined, if the surfaces of the first plane mirror and the second plane mirror are dirty like fingerprints and dust, the surfaces of the first plane mirror and the second plane mirror need to be wiped clean by alcohol cotton or lens wiping paper, and the definition of the picture is influenced.

b. And (4) confirming whether the positions of the knobs of the pitching connecting piece and the left-right rotating connecting piece are at the initial positions or not, if not, adjusting to the initial positions. The method for confirming the initial position of the knobs of the pitching connecting piece and the left-right rotating connecting piece can be, for example, marking lines can be engraved on the pitching connecting piece and the left-right rotating connecting piece, and the initial position is obtained when the marking lines of the pitching connecting piece and the left-right rotating connecting piece are aligned. The present application may also adopt other methods to confirm that the knobs of the pitch link and the left-right rotation link are in the initial positions, which is not particularly limited.

(2) And installing a video auxiliary device on the tablet computer.

a. And clamping the fixing piece into the tablet personal computer along the side wall of the tablet personal computer, and adjusting the position of the fixing piece to enable the second plane mirror to be opposite to the rear camera of the tablet personal computer.

b. The fixing piece is provided with the positioning mark or the positioning mechanism, so that the fixing piece can be accurately positioned after being clamped into the side wall of the tablet computer, and people do not need to judge whether the fixing piece is installed in place.

(3) And fine-tuning the image position.

a. The tablet personal computer is vertically arranged on a desktop, a rear camera of the tablet personal computer is started, desktop light is reflected to the surface of the second plane mirror through the first plane mirror, then reflected to the rear camera of the tablet personal computer through the second plane mirror, finally imaged on the image sensor, and displayed through a screen of the tablet personal computer.

b. Due to the fact that the imaging position of the desktop is deviated, the area needing to be grabbed may not be or is not completely in the picture, the pitching connecting piece and/or the left-right rotating connecting piece need to be finely adjusted, and then the angle of the first plane mirror needs to be finely adjusted, so that the area needing to be grabbed is completely imaged in the picture.

(4) And starting the front camera of the tablet computer to realize synchronous shooting of the front camera and the rear camera.

As shown in fig. 9, the screen of the tablet pc is divided into two parts, the upper part shows the desktop image shot by the rear camera, and the lower part shows the user image shot by the front camera. Alternatively, the image captured by the rear camera and the image captured by the front camera may be displayed on the screen in other manners, for example, the image captured by the rear camera occupies the real screen, the image captured by the front camera floats on the real screen, and the like, which is not particularly limited in this application.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (23)

1. A video assistant apparatus, comprising: the fixing piece, the connecting piece, the first plane mirror and the second plane mirror are arranged on the base; wherein the content of the first and second substances,

the connecting piece comprises a first connecting piece and a second connecting piece; the second connecting piece is connected with the fixing piece; the first plane mirror is arranged on the first connecting piece; the second plane mirror is arranged on the second connecting piece; the reflecting surface of the first plane mirror and the reflecting surface of the second plane mirror are oppositely arranged, and an included angle between the reflecting surface of the first plane mirror and the reflecting surface of the second plane mirror is smaller than 90 degrees.

2. The device of claim 1, wherein the first connecting member and the second connecting member are movably connected, and the relative position relationship between the first connecting member and the second connecting member is adjustable through the movable connection.

3. The device of claim 1, wherein the connector further comprises an intermediate piece;

the first connecting piece and the middle piece are movably connected, and the relative position relation between the first connecting piece and the middle piece can be adjusted through the movable connection; the intermediate part and the second connecting part adopt a movable connection mode, and the relative position relation between the intermediate part and the second connecting part can be adjusted through the movable connection mode.

4. A device according to claim 2 or 3, wherein the moveable connection comprises a screw connection or a castor connection.

5. The device of any one of claims 1-3, wherein the connector further comprises a screw; the second connecting piece and the fixing piece are fixedly connected through the screw.

6. The device of any one of claims 1-3, wherein the fixture is secured by interference fit, snap fit, screw, or magnetic attachment.

7. The device according to any one of claims 1-3, wherein the fixing member comprises two clamping legs, and the width of the gap between the two side walls of the clamping legs is less than 7.2 mm.

8. The device of any one of claims 1-3, wherein the fixture includes a screw adjustment knob for adjusting the tightness of a screw.

9. The device according to any one of claims 1-3, wherein the first and second flat mirrors are fixed to the connector by gluing or clamping.

10. The apparatus of any one of claims 1-3, wherein the first planar mirror is larger in size than the second planar mirror.

11. The apparatus of claim 10, wherein the first planar mirror has a length of 80 mm, a width of 60 mm, and a thickness of 1 mm; and/or the second flat mirror is 20mm long, 20mm wide and 1 mm thick.

12. The apparatus of any of claims 1-3, 11, wherein the first plane mirror has a peak to valley PV value of less than three wavelengths, and a mirror reflectivity PMR of greater than 95%; the peak-to-valley PV value of the second plane mirror is smaller than the wavelength, and the plane mirror reflectivity PMR of the first plane mirror is larger than 95%.

13. The apparatus of claim 2, wherein the pitch angle of the first link relative to the second link is adjustable in a range of-30 ° to 30 °; and/or the adjustment range of the rotation angle of the first connecting piece relative to the second connecting piece is-30 degrees.

14. The apparatus of claim 3, wherein the pitch angle of the first link relative to the intermediate member is adjustable in a range of-30 ° to 30 °; the adjusting range of the rotating angle of the second connecting piece relative to the middle piece is-30 degrees to 30 degrees.

15. The device of any of claims 1-3, 11, 13-14, wherein the first connector has a size that is larger than a size of the second connector.

16. The apparatus of claim 15, wherein the first connector has a length of 88 mm, a width of 64 mm, and a thickness of 3 mm; the second connecting piece is 43 mm long, 30 mm wide and 4 mm thick.

17. The device of claim 3, wherein the intermediate member has a length of 32 mm, a width of 29 mm, and a thickness of 5 mm.

18. The device as claimed in any one of claims 1 to 3, 11, 13 to 14 and 16 to 17, wherein the connecting member is made of photosensitive resin.

19. A video assistance system, comprising: the video assistant and user equipment of any of claims 1-18; wherein the content of the first and second substances,

the user equipment comprises a rear camera;

a fixing piece in the video auxiliary device is fixed at a preset position of the side edge of the user equipment; the second connecting piece and the second flat mirror are both positioned on the back side of the user equipment, the reflecting surface of the second flat mirror faces the rear camera of the user equipment, and a preset included angle is formed between the second flat mirror and the user equipment and is smaller than 90 degrees; the first plane mirror is positioned outside the user equipment, the reflecting surface of the first plane mirror faces the user equipment, a part of the first plane mirror is positioned in the back space of the user equipment, and a part of the first plane mirror is positioned in the front space of the user equipment; and the rear camera can acquire the scene in the front space of the user equipment through the reflecting surface of the second plane mirror and the reflecting surface of the first plane mirror.

20. The system of claim 19, wherein the preset position is within a set range of a side edge of the user device, a center point of the set range facing the rear camera.

21. The system of claim 19, wherein the predetermined position is directly opposite the rear facing camera.

22. The system of claim 19, wherein the predetermined included angle is 40 °.

23. The system according to any of claims 19-22, wherein the user device further comprises a front facing camera and a screen.

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