CN219372499U

CN219372499U - Picture card support and picture quality evaluating device

Info

Publication number: CN219372499U
Application number: CN202223532498.5U
Authority: CN
Inventors: 李湜文; 李蔷; 肖宁
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-07-18
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a picture card bracket and a picture quality evaluation device. The picture card support is used for fixing a picture card and comprises a frame body and a picture card display board, wherein the picture card display board comprises a first test surface and a second test surface which are oppositely arranged along the thickness direction, the first test surface and the second test surface are both used for placing and displaying the picture card, the picture card display board is rotationally connected to the frame body, and the first test surface and the second test surface are exposed through the frame body. Through the arrangement, when the image quality evaluation is carried out, one or more than one image card can be displayed through the rotation switching of the image card bracket, so that the test scene can be fully utilized, and the space utilization rate and the test scene utilization rate in a laboratory can be increased.

Description

Picture card support and picture quality evaluating device

Technical Field

The application relates to the technical field of camera module detection, in particular to a picture card bracket and a picture quality evaluation device.

Background

In order to monitor the camera module, the image quality of the image shot by the camera module is generally evaluated, and the image quality evaluation is generally classified into subjective evaluation and objective evaluation. In objective image quality evaluation, a pattern card test mode is generally adopted, when the pattern card test is carried out, a test environment is needed to be arranged at first, the position, the illumination angle and the camera position of the pattern card are needed to be correspondingly arranged, and the matching relation of the pattern card, the illumination angle and the camera position is ensured to ensure that the test result is available.

Objective image quality evaluation is usually performed in a special laboratory, and only one graphic card can be arranged and tested at a time after a laboratory is configured with a corresponding test scene due to the limitation of test conditions, so that the space utilization rate and the utilization rate of the test scene are low.

Disclosure of Invention

The utility model provides a picture card support and image quality evaluation device, when carrying out the image quality evaluation, it can make full use of test scene, increases space utilization and test scene utilization in the laboratory.

In a first aspect of the present application, there is provided a card holder for fixing a card, the card holder including:

a frame body;

the picture card show board, including first test surface and the second test surface that sets up relatively along thickness direction, first test surface and second test surface all are used for placing and demonstrate the picture card, the picture card show board rotate connect in the support body, and, first test surface with the second test surface all accessible the support body exposes.

Further, the frame body comprises a base and a frame, the graphic card display board is located inside the frame, the frame surrounds the graphic card display board from the side face, the frame is provided with a top and a bottom which are opposite in direction, the bottom of the frame is fixedly connected with the base, and the base is used for bearing the frame and the graphic card display board.

Further, the graphic card support further comprises a driving device, wherein the driving device is located at the top of the frame and connected with the graphic card display board and used for driving the graphic card display board to horizontally rotate relative to the frame.

Further, the driving device comprises a motor and a transmission shaft, the transmission shaft is fixedly arranged on the graphic card display board, the motor comprises an output shaft, and the output shaft is fixedly connected with the transmission shaft and is used for driving the graphic card display board to rotate relative to the frame.

Further, the driving device further comprises a bearing structure fixedly connected to the frame, and at least part of the transmission shaft and the output shaft are located in the bearing structure and used for limiting radial movement of the transmission shaft and the output shaft.

Further, the transmission shaft comprises a first body and a first positioning part, wherein the first body is fixedly connected to the first positioning part, and the orthographic projection of the first positioning part covers the orthographic projection of the first body along the axial direction of the transmission shaft;

the first body gets into the inside of bearing structure, the surface of keeping away from of first location portion the card show board is leaned on, and, first location portion with card show board fixed connection.

Further, the bearing structure comprises a second body and a second positioning part, wherein the second body is fixedly connected to the second positioning part, and the orthographic projection of the second positioning part covers the orthographic projection of the second body along the axial direction of the bearing structure;

the bearing structure is provided with a through hole, the through hole penetrates through the second body and the second positioning part, and at least part of the transmission shaft is positioned in the through hole; and/or the second body is arranged in the frame, the surface, close to the second body, of the second positioning part abuts against the frame, and the second positioning part is fixedly connected with the frame.

Further, a ball turntable is arranged at the joint of the bottom of the graphic card display board and the frame, and the ball turntable comprises a ball piece which is used for supporting the rotation of the graphic card display board relative to the frame.

In a second aspect of the present application, an image quality evaluation device is provided, where the image quality evaluation device includes a graphics card and a graphics card support according to the first aspect of the present application, where the graphics card may be disposed on a first test surface or a second test surface of the graphics card support.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

in the limited space in the laboratory, can place two pictures cards through two sides of picture card support, can demonstrate the picture card on two sides respectively through the support rotation to can be under same test scene, switch test picture card through this picture card support, test more than one picture card, increase the space utilization in laboratory, and improved the utilization to test scene.

Drawings

Fig. 1 is a schematic perspective view of the card holder in this embodiment.

Fig. 2 is another schematic perspective view of the card holder in the present embodiment.

Fig. 3 is another schematic perspective view of the card holder in this embodiment.

Fig. 4 is an exploded view of the driving device in the card holder of the present embodiment.

Fig. 5 is an enlarged view at a region a in fig. 4.

Fig. 6 is a schematic diagram showing a connection structure of the board and the frame in the card holder according to the present embodiment.

Fig. 7 is a schematic exploded view of the frame connection structure of the card holder according to the present embodiment.

Fig. 8 is an exploded view of the ball turntable in the card holder of the present embodiment.

Description of the reference numerals

The card holder 10, the card 20, the card display board 100, the frame 200, the first test surface 110, the second test surface 120, the card placement area 130, the frame 210, the base 220, the driving device 300, the motor 310, the transmission shaft 320, the output shaft 311, the bearing structure 330, the first body 321, the first positioning portion 322, the second body 331, the second positioning portion 332, the through hole 333, the ball turntable 400, the ball member 410, the upper turntable 420, the lower turntable 430, and the ball track 440.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The manner described in the following exemplary embodiments does not represent all manners consistent with the present application. Rather, they are merely examples of apparatus consistent with some aspects of the present application as detailed in the accompanying claims.

The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Also, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and the terms "a" and "an" are used individually. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

In order to evaluate the image quality of the camera module, the image quality of the camera module is generally required to be evaluated, the image quality evaluation generally comprises subjective evaluation and objective evaluation, the objective test generally adopts a method of image card test, and parameters such as resolution, chromatic aberration, MTF (Modulation Transfer Function ) and the like of the camera module can be tested through different image cards. In the test of the image card, comparing the observed image with the standard image, so as to obtain the difference between the observed image and the standard image; the larger the difference, the greater the degree of degradation of the observed image, and the worse the image quality.

The objective test environment mainly depends on indoor simulation, and the scene and environment required by the test, such as illumination environment, illumination angle, illumination intensity, temperature and relative humidity of the environment, and the like, are arranged and simulated in a laboratory, and the environment is suitable for the graphics card, for example, the position of the graphics card, a camera, a light source, and the like, are required to be adjusted. Since many hardware devices, such as lamps, cameras, etc., are involved in the test, the corresponding arrangement between the test scene and the test card is complicated.

After the arrangement of the test environment is completed, the cards can be tested, but in general, after a corresponding scene is arranged in a laboratory, only one card can be tested due to limited space, and if the test of the next card is to be switched, the card tested at this time needs to be taken down, and the test environment is reconfigured for the next card. For example, the angle and the relative position of the image card and the light source, the position of the image capturing module and the image card need to be adjusted, and time and labor are consumed in the process. Secondly, in the process of switching the graphics cards, hardware arrangement which is not required to be adjusted originally may be affected by personnel operation, for example, the position of the camera module is not required to be changed originally in the test process of two graphics cards, but a user may touch a camera in the operation process, so that additional test environment debugging work is added. To the above-mentioned problem, this embodiment discloses a drawing card support and a drawing card testing arrangement, and this drawing card support has the panel that can demonstrate drawing card, and all can set up drawing card on the front and the back of panel, and this panel can be rotated in order to demonstrate drawing card on the front and the back of panel respectively with the support, need not the manual work and switches two drawing cards, and it can improve the utilization ratio of test environment in the limited space in laboratory to reduce manual operation and time cost.

Referring to fig. 1-3, a graphics card bracket 10 is disclosed. For example, the graphic card support 10 in the present embodiment includes a frame 200 and a graphic card display board 100, where the graphic card display board 100 includes a first test surface 110 and a second test surface 120 that are disposed opposite to each other along a thickness direction, the first test surface 110 and the second test surface 120 are both used for placing the graphic card 20, and the graphic card display board 100 is rotatably connected to the frame 200, and the first test surface 110 and the second test surface 120 can be exposed through the frame 200, so that the graphic card 20 placed thereon is exposed and can be photographed by the camera module, so as to evaluate the image quality of the camera module. By means of the arrangement, in the limited space of the original laboratory, the first test surface 110 and the second test surface 120 on the graphic card support 10 are respectively provided with one graphic card 20, and the graphic cards 20 on the first test surface 110 and the second test surface 120 can be displayed for testing of the graphic card 20 of the camera module by rotating the graphic card display board 100. With the card holder 10 of the present embodiment, two cards are respectively disposed at the appropriate positions on the first test surface 110 and the second test surface 120, so that the two cards 20 can be respectively tested under the condition that only one test environment is configured. Moreover, with the card holder 10 in the present embodiment, after the test for the card 20 on the first test surface 110 is completed, the card display board 100 is automatically rotated, and the second test surface 120 is rotated to the front, so that the test corresponding to the card 20 on the second test surface 120 can be performed.

In addition, the graphic card support 10 in the present embodiment may also be applied to a shooting test of a moving scene, for example, for a moving object gradually disappearing in a screen, by the rotation of the graphic card display board 100 in the present embodiment. For example, the graphic card 20 of the corresponding moving object may be disposed on the first test surface 110 or the second test surface 120, and when the test is performed, the graphic card display board 100 is rotated to the other test surface where the graphic card 20 is not disposed, so as to simulate the gradual disappearance of the moving object (the graphic card 20), and thus, the image quality detection of the moving object moving to the gradual disappearance position by the camera module can be realized.

The card display board 100 includes a card placement area 130, and when the card 20 is placed in the card placement area 130, the card 20 can be fixed on the card display board 100 and completely displayed by the card display board 100, and the card placement area 130 is disposed on both the first test surface 110 and the second test surface 120 of the card display board 100.

In this embodiment, at least part of the positions of the first test surface 110 and the second test surface 120 of the card display board 100 may be provided with a magnetic attraction structure, and the part of the first test surface 110 and the second test surface 120 with the magnetic attraction structure is used as the card placement area 130. It should be noted that, in other embodiments, the magnetic attraction structure may be disposed only on the first test surface 110 and the second test surface 120. Correspondingly, a magnetic attraction structure is arranged on the back of the graphic card 20. At this time, the first test surface 110 and the second test surface 120 provided with the magnetic attraction structure are configured to magnetically attract and fix the graphic card having the magnetic attraction structure. For example, the card 20 may be magnetically fixed to the card placement area 130 on the first test surface 110 and the second test surface 120, and the front surface of the card 20 is fully shown. Meanwhile, the design can not only completely display the graphic card 20 on the first test surface 110 and the second test surface 120, but also facilitate the replacement of the graphic card 20, and only need to take down the original graphic card 20 and re-adsorb the graphic card 20 to be replaced on the first test surface 110 or the second test surface 120. It should be noted that the magnetic attraction structure on the first test surface 110 and the second test surface 120 may be the same material as the magnetic attraction structure on the card 20, or may be different materials. For example, in the present embodiment, the first test surface 110 and the second test surface 120 may be metal materials, and iron materials may be exemplified. The magnetic attraction structure on the card 20 may be a magnet. At this time, the first test surface 110 and the card 20 can be magnetically fixed, and the second test surface 120 and the card 20 can be magnetically fixed.

In other embodiments, card placement area 130 may be presented in other ways as well. For example, by providing a card slot corresponding to the size of the graphic card 20 on the graphic card display board 100, the card slot is used as the graphic card placement area 130, and the graphic card 20 is placed and fixed in the card slot. Alternatively, the adhesive coating may be disposed on the card display board 100 to form the card placement area 130, and the card 20 may be adhesively fixed in the card placement area 130.

With continued reference to fig. 2, the frame 200 includes a base 220 and a frame 210, the card display board 100 is located inside the frame 210, the frame 210 laterally encloses the card display board 100, and the frame 210 has a top and a bottom opposite to each other, the bottom of the frame 210 is fixedly connected to the base 220, and the base 220 is used for carrying the frame 210 and the card display board 100. In this embodiment, in order to make the structure of the card holder 10 more stable, a base 220 is provided, and the frame 210 is fixed to the base 220, so that the card holder 10 is more stable as a whole. The frame 210 encloses a closed area, and the card display board 100 is disposed in the area, so that the frame 210 can completely surround the card display board 100 from the side, and the frame 210 supports the card display board 100 while providing protection for the card display board 100, thereby avoiding deformation of the card display board 100 caused by external collision, and the like, which affects the test effect, because the structure of the frame 210 is more firm than the card display board 100.

Referring to fig. 4-5, the card holder 10 of the present embodiment further includes a driving device 300, where the driving device 300 is located at the top of the frame 210 and is connected to the card display board 100, and the driving device 300 drives the card display board 100 to horizontally rotate relative to the frame 210. The drive means 300 is disposed on top of the frame 210, also on top of the card display 100 and the card display 100 rotates horizontally with respect to the frame 210, such that the motor 310 need only provide torque that can rotate the card display 100 with respect to the frame 210. Compared with the situation that the driving device 300 is located at the bottom of the card display board 100 or is disposed in the middle of the card display board 100 and the card display board 100 rotates vertically, the driving device 300 does not need to bear the gravity of the card display board 100, so that the service life of the driving device 300 is prolonged and the energy consumption is reduced.

Further, the driving device 300 includes a motor 310 and a driving shaft 320, the driving shaft 320 is fixedly disposed on the card display board 100, the motor 310 includes an output shaft 311, the output shaft 311 is fixedly connected with the driving shaft 320, and the output shaft 311 of the motor 310 drives the driving shaft 320 to rotate, thereby driving the card display board 100 to rotate relative to the frame 210. In the present embodiment, the motor 310 is assembled at the top of the frame 210, the output shaft 311 passes through the frame 210 to be connected with the card display plate 100, instead of the problem of disposing the motor 310 between the card display plate 100 and the frame 210, the volume of the whole device is reduced, and the motor 310 can directly drive the card display plate 100 to rotate through the arrangement of the transmission shaft 320.

The driving device 300 further comprises a bearing structure 330, the bearing structure 330 is fixedly connected to the frame 210, and at least part of the transmission shaft 320 and the output shaft 311 of the motor 310 are located in the bearing structure 330, so that the bearing structure 330 can limit the radial movement of the output shaft 311 and the transmission shaft 320. So set up, with transmission shaft 320 and picture card show board 100 fixed connection, and bearing structure 330 and frame 210 fixed connection, and transmission shaft 320 passes frame 210 and bearing structure 330 and transmission shaft 320 fixed connection for output shaft 311 is more stable, can not take place radial dislocation. Further, since at least a portion of the driven shaft is also located within the bearing structure 330, the connection between the card display panel 100 and the frame 210 is made stronger while increasing the stability of the driven shaft.

The transmission shaft 320 includes a first body 321 and a first positioning portion 322, where the first body 321 is fixedly connected to the first positioning portion 322, and the front projection of the first positioning portion 322 covers the front projection of the first body 321 along the axial direction of the transmission shaft 320. In this embodiment, the first body 321 and the first positioning portion 322 may be configured as a cylindrical structure, and the radius of the first positioning portion 322 is larger than the radius of the first body 321, the first body 321 and the first positioning portion 322 are fixedly connected, and the axial directions of the first body 321 and the first positioning portion 322 are all on the same straight line with the axis of the output shaft 311 of the motor 310.

Illustratively, the portion of the first body 321 of the drive shaft 320 that is located within the bearing structure 330 promotes coaxiality of the drive shaft 320 and the bearing structure 330. The surface of the first positioning portion 322 far from the first body 321 is abutted against the card display board 100 and fixedly connected with the card display board 100. Because the diameter of the first positioning portion 322 is greater than the first body 321, that is, the orthographic projection of the first positioning portion 322 covers the orthographic projection of the first body 321, when the first body 321 extends into the bearing structure 330, the first positioning portion 322 does not enter the bearing structure 330, and the first positioning portion 322 can achieve a limiting effect. Meanwhile, the first positioning portion 322 with a larger surface area is abutted against the card display board 100, so as to promote the contact area of the first positioning portion and the card display board. For example, the first positioning portion 322 may be configured as a flange structure, and a fastener is disposed on the first positioning portion 322, and the first positioning portion 322 is fixedly connected to the card display board 100 through the fastener, so that the connection structure is more concise.

The bearing structure 330 includes a second body 331 and a second positioning portion 332, where the second body 331 is fixed on the second positioning portion 332, and along the axial direction of the bearing structure 330, the front projection of the second positioning portion 332 covers the front projection of the second body 331 and covers the front projection of the second body 331.

Further, the bearing system is provided with a through hole 333, the through hole 333 penetrates through the second body 331 and the second positioning portion 332, and at least a portion of the transmission shaft 320 is located inside the through hole 333. Illustratively, the first body 321 on the transmission shaft 320 is disposed inside the through hole 333, so that the axis of the through hole 333 is on the same line as the axis of the bearing structure 330, and the first body 321 is disposed inside the through hole 333, so that the transmission shaft 320 is collinear with the bearing structure 330, and the output shaft 311 of the motor 310 is also disposed inside the bearing structure 330, so that the coaxiality of the output shaft 311, the bearing structure 330 and the transmission shaft 320 is further ensured.

In the present embodiment, the second body 331 is mounted inside the frame 210, and the second positioning portion 332 abuts against the frame 210 near the surface of the second body 331 and is fixedly connected to the frame 210. For example, the second body 331 and the second positioning portion 332 may each be provided in a cylindrical structure, the radius of the second positioning portion 332 is larger than that of the second body 331, the second body 331 and the second positioning portion 332 are fixedly connected, and the axial directions of the second body 331 and the second positioning portion 332 are all disposed on the same straight line with the axis of the output shaft 311 of the motor 310. Since the diameter of the second positioning portion 332 is larger than that of the second body 331, the second positioning portion 332 does not enter the frame 210, so as to achieve a limiting effect. Meanwhile, the surface of the second positioning portion 332 remote from the second body 331 abuts against the frame 210. Since the diameter of the second positioning portion 332 is greater than that of the second body 331, that is, the orthographic projection of the second positioning portion 332 covers the orthographic projection of the second body 331, when the second body 331 extends into the frame 210, the second positioning portion 332 does not enter the frame 210, and the first positioning portion 322 can achieve a limiting effect. At this time, the second positioning portion 332 with a larger surface area is abutted against the frame 210 to raise the contact area of the two. For example, the second positioning portion 332 may be configured as a flange structure, and a fastener is disposed on the second positioning portion 332, and the second positioning portion 332 is fixedly connected to the frame 210 through the fastener, so that the connection structure is simpler.

On this basis, since the first positioning portion 322 of the transmission shaft 320 abuts against the card display board 100, the second positioning portion 332 of the bearing structure 330 abuts against the frame 210, and the first body 321 of the transmission shaft 320 is located in the through hole 333 of the bearing structure 330, and the second body 331 of the bearing structure 330 is disposed in the frame 210, when the card support 10 is assembled, the space between the frame 210 and the card display board 100 is at least the sum of the thicknesses of the first positioning portion 322 and the second positioning portion 332, as shown in fig. 6. By such arrangement, a certain distance is kept between the card display board 100 and the frame 210 at the driving device 300, so that the resistance generated by friction between the card display board 100 and the frame 210 in rotation is avoided, the possibility of deformation of the card display board 100 caused by friction in rotation is reduced, and the quality of testing is ensured.

Of course, in other embodiments, the bearing structure 330 may also have only the following features: the second body 331 is fixed on the second positioning portion 332, and along the axial direction of the bearing structure 330, the front projection of the second positioning portion 332 covers the front projection of the second body 331 and the front projection of the second body 331; further, the bearing system is provided with a through hole 333, the through hole 333 penetrates through the second body 331 and the second positioning portion 332, and at least a portion of the transmission shaft 320 is located inside the through hole 333. Such an arrangement may still ensure coaxiality between the output shaft 311, the drive shaft 320 and the bearing structure 330.

Alternatively, for the bearing structure 330, the second body 331 may be fixed on the second positioning portion 332, and along the axis direction of the bearing structure 330, the front projection of the second positioning portion 332 covers the front projection of the second body 331 and covers the front projection of the second body 331; the second body 331 is installed inside the frame 210, and the second positioning portion 332 abuts against the frame 210 near the surface of the second body 331 and is fixedly connected to the frame 210. So configured, the connection of the bearing structure 330 to the frame 210 may be facilitated.

Referring to fig. 7, the top of the card display board 100 is connected to the frame 210 through the first positioning portion 322 of the transmission shaft 320 and the second positioning portion 332 of the bearing structure 330, and is connected to the frame at the connection point of the bottom of the card display board 100 and the frame 210 through the ball turntable 400. Referring to fig. 8 for a specific structure of the ball turret 400, the ball turret 400 includes a ball 410, and the ball 410 is used to support rotation of the card display board 100 relative to the frame 210. For example, the ball turntable 400 includes an upper turntable 420 and a lower turntable 430, the upper turntable 420 is fixedly connected to the bottom of the card display board 100, the lower turntable 430 is fixedly connected to the frame 210, and the upper turntable 420 and the lower turntable 430 are in contact with each other. And the upper turn table 420 and the lower turn table 430 together constitute a ball track 440, the ball member 410 is disposed in the ball track 440, and the mutual rotation between the upper turn table 420 and the lower turn table 430 is achieved by the rolling of the ball member 410 in the ball track 440, so that further the structure can support the rotation of the card display board 100 with respect to the frame 210. In this way, the ball turntable 400 is aligned with the output shaft 311 and the transmission shaft 320 of the driving device 300, and forms an axis of rotation of the card display board 100 relative to the frame 210 together with the output shaft and the transmission shaft. The ball turntable 400 structure can be used as a connecting structure between the card display board 100 and the frame 210, and can be used as a fulcrum for supporting the card display board 100 by the frame 210, and can also support the rotation of the card display board 100 relative to the frame 210. In addition, the axis of the card display plate 100 composed of the transmission shaft 320 and the ball turntable 400 may be disposed at the center line of the card display plate 100, so that dynamic balance during rotation of the card display plate 100 may be ensured.

In this embodiment, the frame 210 includes two horizontal frames and two vertical frames. Fig. 7 shows only two transverse frames.

The present embodiment also provides an image quality evaluation device, which includes the card holder 10 and the card 20, where the card 20 can be disposed on the first test surface 110 or the second test surface 120 of the card holder 10. In the present embodiment, since the card display board 100 of the card holder 10 is made of a magnetic material, the card 20 can be disposed with a magnetic component on the back of the card 20, i.e. can be attached in the card placement area 130 of the card holder 10. The device is used for carrying out image quality evaluation, at least two image cards 20 can be arranged in a limited space of a laboratory, and after the configuration is completed in a test environment, the image card display board 100 can automatically rotate so as to respectively utilize the two image cards 20 for carrying out image quality evaluation, so that the image cards 20 are more convenient to switch, the limited space of the laboratory is fully utilized, and the utilization rate of a test scene is improved.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the utility model to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.

Claims

1. A graphics card bracket for securing graphics cards, the graphics card bracket comprising:

a frame body;

the picture card show board, including first test face and the second test face of following the relative setting of thickness direction, first test face with the second test face all is used for placing and demonstrate the picture card, the picture card show board rotate connect in the support body, and, first test face with the second test face all accessible the support body exposes.

2. The graphic card holder as recited in claim 1, wherein the frame body includes a base and a frame, the graphic card display panel is positioned inside the frame, the frame laterally encloses the graphic card display panel, the frame has a top and a bottom opposite in direction, the bottom of the frame is fixedly connected to the base, and the base is used for carrying the frame and the graphic card display panel.

3. The graphic card holder according to claim 2, further comprising a driving device positioned at a top of the frame and coupled to the graphic card display panel for driving the graphic card display panel to horizontally rotate relative to the frame.

4. A graphic card holder as recited in claim 3, wherein the driving device includes a motor and a drive shaft, the drive shaft being fixedly disposed on the graphic card display panel, the motor including an output shaft fixedly connected to the drive shaft and adapted to drive the graphic card display panel to rotate relative to the frame.

5. The graphics card bracket of claim 4 wherein said drive means further comprises a bearing structure fixedly attached to said frame, at least a portion of said drive shaft and said output shaft being located within said bearing structure and adapted to limit radial movement of said drive shaft and said output shaft.

6. The card holder according to claim 5, wherein the drive shaft includes a first body and a first positioning portion, the first body is fixedly connected to the first positioning portion, and an orthographic projection of the first positioning portion covers an orthographic projection of the first body along an axis direction of the drive shaft;

7. The card holder of claim 6, wherein the bearing structure includes a second body and a second positioning portion, the second body is fixedly connected to the second positioning portion, and an orthographic projection of the second positioning portion covers an orthographic projection of the second body along an axis direction of the bearing structure;

8. A graphic card holder as claimed in claim 2, wherein a ball turntable is provided at the connection of the bottom of the graphic card display panel to the frame, the ball turntable including ball members for supporting rotation of the graphic card display panel relative to the frame.

9. The graphic card holder according to claim 1, wherein at least part of the first test surface and/or the second test surface of the graphic card display board is provided with a magnetic attraction structure, and is configured to magnetically attract and fix the graphic card with the magnetic attraction structure.

10. An image quality evaluation device, comprising a graphic card and the graphic card support according to any one of claims 1-9, wherein the graphic card can be arranged on a first test surface or a second test surface of the graphic card support.