Camera testing device

Abstract

The invention discloses a camera testing device, and belongs to the technical field of camera shooting equipment, and the camera testing device comprises a base, a rack used for supporting a camera with a plurality of cameras, and a first testing frame used for installing a first detection graph card. The rack and the first test racks are both installed on the base, the number of the first test racks is larger than or equal to the number of the cameras, and the multiple first test racks are arranged at intervals in the circumferential direction of the rack. According to the camera testing device, all the cameras of the camera can complete shooting testing on the testing graph card at a time, and the testing period is shortened.

Description

Technical Field

[0001] The present invention relates to the field of camera device technologies, and particularly relates to a camera testing device. Background Art

[0002] Existing panoramic cameras generally have multiple cameras. Different images are captured at different angles by the multiple cameras, and then the images captured by each camera are stitched together to achieve panoramic shooting. There are stitching gaps when the images captured by each camera are stitched. The stitching gap is an important indicator for evaluating the shooting quality of a panoramic camera. When testing the stitching gap in the prior art, some cameras first capture and test different test charts simultaneously, and then readjust the position of the camera to test the remaining cameras, resulting in a relatively long testing cycle. Summary of the Invention

[0003] An object of an embodiment of the present invention is to provide a camera testing device, which can enable all cameras of a camera to complete the shooting test of a test chart at one time, thereby shortening the testing cycle.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] Provide a camera testing device, including:

[0006] A base;

[0007] A frame for supporting a camera having multiple cameras; the frame is installed on the base;

[0008] And

[0009] A first test stand for installing a first test chart; the first test stand is installed on the base;

[0010] There are multiple first test stands, and the multiple first test stands are arranged at intervals along the circumferential direction of the frame.

[0011] Optionally, the camera testing device further includes a second test stand for installing a second test chart; there are multiple second test stands, and the first test stands and the second test stands are arranged alternately along the circumferential direction of the frame.

[0012] Optionally, the base has an installation plane, and the frame, the first test stand, and the second test stand are all vertically installed on the installation plane.

[0013] Optionally, the distances between each first test stand and the frame are equal, and the distances between each second test stand and the frame are equal.

[0014] Optionally, the distance between the first test stand and the frame is greater than the distance between the second test stand and the frame.

[0015] Optionally, the height of the first test stand along the direction perpendicular to the mounting plane is greater than the height of the second test stand along the direction perpendicular to the mounting plane.

[0016] Optionally, the first test stand has a connecting seat mounted on the base; the connecting seat is provided with an arc groove extending along a first arc track, and the base is provided with a plurality of positioning holes arranged at intervals along the first arc track, and the positioning holes are located in the area enclosed by the arc groove.

[0017] Optionally, the base is provided with an angle scale, the angle scale has a plurality of scale bars arranged at intervals along a second arc track, the center of the second arc track is the same as the center of the first arc track, and the connecting seat is provided with an indicating plate, and the indicating plate points to any one of the scale bars.

[0018] Optionally, both the first test stand and the second test stand include a support frame mounted on the base and a drawing board mounted on the support frame; the drawing board has a drawing surface facing the frame.

[0019] Optionally, the frame includes a lifter mounted on the base and a support platform drivingly connected to the lifter; a first connection hole is formed in the support platform.

[0020] Optionally, a limiting ring is provided on the support platform, a plurality of second connection holes are provided on the limiting ring, there are a plurality of the first connection holes, and at least some of the first connection holes correspond to and communicate with the second connection holes one by one.

[0021] Optionally, at least one of the first test stands and / or at least one of the second test stands is provided with a pick-up and placement opening;

[0022] When the first test stand is provided with a pick-up and placement opening, a pick-up and placement door for covering or uncovering the pick-up and placement opening is movably mounted on the first test stand; when the second test stand is provided with a pick-up and placement opening, a pick-up and placement door for covering or uncovering the pick-up and placement opening is movably mounted on the second test stand.

[0023] Optionally, the camera testing device further includes wheels and a brake for locking the wheels; the wheels are rotatably mounted on the base, and the brake is mounted on the base.

[0024] The beneficial effects of the present invention are:

[0025] The camera testing device of the present invention has a plurality of first testing frames arranged at circumferential intervals along the frame. During testing, each first testing frame is provided with a first detection chart for testing the splicing gap. When the camera to be tested is placed on the frame such that each camera of the camera faces a different first detection chart, all the cameras of the camera can complete the shooting test of the test chart at one time, without having to place the camera repeatedly to adjust each camera for the shooting test, thus shortening the testing cycle. Description of the Drawings

[0026] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0027] Figure 1 It is a schematic structural diagram of the camera testing device;

[0028] Figure 2 It is a side view of the camera testing device;

[0029] Figure 3 It is a top view of the camera testing device;

[0030] Figure 4 It is a schematic diagram of the cooperation between the first testing frame and the base;

[0031] Figure 5 For Figure 4 the enlarged view at A of

[0032] Figure 6 It is a schematic structural diagram of the base and the frame;

[0033] Figure 7 It is a schematic diagram of the cooperation between the second testing frame and the access door.

[0034] Description of the reference numerals in the drawings:

[0035] 11. Base; 12. Frame; 13. First testing frame; 14. Second testing frame; 15. Access opening; 16. Access door;

[0036] 111. Installation plane; 112. Positioning hole; 113. Angle scale;

[0037] 121. Lifter; 122. Support platform; 123. First connection hole; 124. Limit ring; 125. Second connection hole;

[0038] 131. Connection seat; 132. Arc groove; 133. Indicator board; 134. Support frame; 135. Chart board; 136. Chart surface; 137. Hinge. Detailed Description of the Embodiment

[0039] To make the technical problems solved by the present invention, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0040] In the description of the present invention, unless otherwise clearly defined and limited, terms such as "connected", "fixed", "connected", "communicated", "abutted", "clamped", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly defined and limited, the "above" or "below" of the first feature relative to the second feature may include direct contact between the first and second features, or may include the case where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the "above", "above", and "on the top" of the first feature relative to the second feature include that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The "below", "below", and "under the bottom" of the first feature relative to the second feature include that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0042] In the description herein, it should be understood that the orientation or positional relationships such as "above", "below", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0043] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0044] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0045] Unless otherwise specified or defined, the term "and / or" used in the present invention includes any and all combinations of one or more of the related listed items.

[0046] For the convenience of description, unless otherwise stated, the up-down direction mentioned below is consistent with Figure 2 its own up-down direction.

[0047] Currently, in order to achieve panoramic shooting, a panoramic shooting device with multiple cameras is generally used for multi-angle shooting. The multiple cameras in the panoramic shooting device are evenly arranged at intervals along the circumferential direction of the shooting device body to achieve panoramic shooting. Then, the multiple captured images are stitched through stitching technology to form a panoramic image. When multiple images are stitched, the size of the stitching gap between the images during stitching is an important evaluation criterion for the stitching effect. Therefore, it is necessary to perform a stitching effect test during the production of a panoramic camera.

[0048] In the prior art, when performing a stitching test, only each camera can be individually tested for shooting, or only some cameras can be tested for shooting first. Therefore, it is necessary to manually place and adjust the camera multiple times to make all cameras perform shooting tests. To complete the shooting tests of all cameras, the camera needs to be placed and adjusted multiple times, resulting in a longer test cycle and lower test efficiency and economic benefits.

[0049] To solve the above technical problems, in this application, a plurality of first test racks are provided to place first test cards for testing. The plurality of first test cards correspond to the plurality of cameras one by one, so that all cameras can perform shooting tests simultaneously, and the shooting tests are completed at one time. Finally, the captured images are stitched to obtain the parameters of the stitching gap.

[0050] The specific solution of the present invention is as follows:

[0051] As Figures 1 to 3 shown, the camera test device provided in this application includes a base 11, a frame 12, and a first test rack 13.

[0052] The frame 12 and the first test rack 13 are both installed on the base 11. The base 11 is used to support the frame 12 and the first test rack 13, so that the positions of the frame 12 and the first test rack 13 are relatively fixed. The frame 12 is used to place a prototype, such as a shooting device with multiple cameras like a camera, and the frame 12 provides support for the camera.

[0053] The first test rack 13 is used to mount the first detection card. The first detection card is a card for testing the splicing gap. After the images are spliced by the splicing technology, the splicing effect can be analyzed.

[0054] The number of the first test racks 13 is multiple. For example, the number of the first test racks 13 and the number of cameras are both two and correspond one by one. Each camera shoots 180 degrees, and the two first test racks 13 are distributed at 180 degrees. The number of the first test racks 13 and the number of cameras are both six and correspond one by one. Each camera shoots 60 degrees, and the six first test racks 13 are distributed at 60 degrees.

[0055] Preferably, the number of the first test racks 13 is equal to the number of the camera lenses of the camera. In this embodiment, the number of the first test racks 13 and the number of cameras are both four. The four first test racks 13 and the four cameras correspond one by one. The first detection cards facing the cameras can be mounted on each of the first test racks 13, and the number of the first detection cards corresponds to the number of the cameras one by one. The adjacent cameras are distributed at 90 degrees to achieve panoramic shooting. The adjacent first test racks 13 are distributed at 90 degrees, so that the first detection cards on each of the first test racks 13 correspond to the cameras. The multiple first test racks 13 are arranged at intervals along the circumferential direction of the rack 12. When testing, the first detection cards are mounted on each of the first test racks 13. The first detection cards face the cameras on the rack 12. Different first detection cards are respectively aligned with one camera. In this way, each camera corresponds to a first detection card for shooting test. Start the camera, and the multiple camera lenses of the camera can shoot tests simultaneously. The multiple camera lenses of the camera complete the shooting test at one time, and all the splicing effects of the camera are tested at one time. There is no need to re-extract the camera to adjust the position of the camera lens and then place it on the rack 12 to shoot the untested camera lens, avoiding placing the camera multiple times, effectively reducing the test time and improving the test efficiency.

[0056] It can be understood that, optionally, the number of the first test racks 13 is greater than or equal to the number of the cameras. For example, the number of the first test racks 13 is eight and the number of the cameras is four. When testing, the four cameras respectively corresponding to the four first test racks 13 can complete the test. When the camera test device with eight camera lenses is replaced, the camera test device can also be adapted.

[0057] Optionally, the first detection card is arranged on the first test rack 13 by pasting.

[0058] In addition, the first detection card can also be arranged on the first test rack 13 by means of a fixing clip, magnetic attraction, etc.

[0059] Specifically, when the camera testing device tests a 360° panoramic camera with four cameras in the factory, the color temperature of the test environment is set to 5000K, the illuminance is set to 500 lx, and the camera is turned on to test the stitching effect and the clarity effect.

[0060] In one embodiment, the camera testing device further includes a second test rack 14 for mounting a second detection card. There are multiple second test racks 14, and the multiple second test racks 14 are evenly spaced along the circumferential direction of the rack 12. The first test rack 13 and the second test rack 14 are alternately spaced along the circumferential direction of the rack 12, and a second test rack 14 is provided between adjacent first test racks 13. The second test rack 14 is used to mount a second detection card, and the second detection card is a card for testing clarity. The number of second test racks 14 is the same as the number of cameras. In this embodiment, the number of second test racks 14 is four, and adjacent second test racks 14 are distributed at 90 degrees. Each second test rack 14 is provided with a second detection card. When performing the clarity test, by adjusting the position of the camera, the four cameras respectively correspond to the four second detection cards, so as to simultaneously perform the clarity test on the four cameras, that is, all cameras perform the clarity test synchronously, reducing the test workstations, reducing the overall test manpower, and reducing the test cost. When performing the clarity test, the shooting clarity of the camera is analyzed by testing the clarity of each camera shooting the second detection card. After the clarity test is completed, the camera can be adjusted according to the test results, which can ensure the shooting clarity of the produced camera and ensure the panoramic shooting effect.

[0061] Optionally, the second detection card is disposed on the second test rack 14 by pasting.

[0062] In addition, the second detection card can also be disposed on the second test rack 14 by means of a fixing clip, magnetic attraction, etc.

[0063] In one embodiment, the base 11 has a mounting plane 111, and the mounting plane 111 is the upper surface of the base 11. The lower ends of the rack 12, the first test rack 13, and the second test rack 14 are all mounted on the mounting plane 111, and the upper ends of the rack 12, the first test rack 13, and the second test rack 14 all extend upward along a direction perpendicular to the mounting plane 111. The spacing between the first test rack 13, the second test rack 14, and the rack 12 remains unchanged from top to bottom, which is convenient for the vertical installation of the first detection card and the second detection card.

[0064] Optionally, the distances between each first test stand 13 and the frame 12 are equal, and the distance between each first test stand 13 and the frame 12 is D1. This ensures that the shooting of each camera is consistent, facilitating subsequent image stitching. The distances between each second test stand 14 and the frame 12 are equal, which can ensure that the shooting distances of each camera are equal during the stitching test and also during the clarity test.

[0065] Furthermore, the distance between each second test stand 14 and the frame 12 is D2. The distance between the first test stand 13 and the frame 12 is greater than the distance between the second test stand 14 and the frame 12, that is, D1 is greater than D2. Since the length of the first test card for testing the stitching effect is longer in the height direction, the distance D1 needs to be larger to facilitate the installation of the first test card. The pattern of the second test card for testing clarity is relatively small and requires a closer distance for convenient shooting. Specifically, the distance between the first test stand 13 and the frame 12 is 70 cm, and the distance between the second test stand 14 and the frame 12 is 50 cm.

[0066] In one embodiment, the height of the first test stand 13 along the direction perpendicular to the installation plane 111 is greater than the height of the second test stand 14 along the direction perpendicular to the installation plane 111. The height refers to the dimension along the direction perpendicular to the installation plane 111. The height of the first test stand 13 along the direction perpendicular to the installation plane 111 is H1, and the height of the second test stand 14 along the direction perpendicular to the installation plane 111 is H2, and H1 is greater than H2. The first test stand 13 is higher so that the first test card installed can penetrate the entire shooting screen, that is, the height of the first test card needs to be large enough so that the first test card covers the entire shooting screen of the camera. Therefore, the first test stand 13 needs to be higher to facilitate the installation of the first test card with a larger height. The second test card on the second test stand 14 needs to be entirely accommodated within the shooting screen of the camera, and the required height of the second test card is smaller. Therefore, the second test stand 14 requires a smaller height.

[0067] Such as Figure 1 、 Figure 4 、 Figure 5As shown, in one embodiment, the first test stand 13 has a connecting seat 131 mounted on the base 11. The connecting seat 131 is provided with an arc groove 132 extending along a first arc trajectory, the first arc trajectory is parallel to the mounting plane 111, and the arc groove 132 penetrates the connecting seat 131 from top to bottom. The base 11 is provided with a plurality of positioning holes 112 arranged at intervals along the first arc trajectory, the positioning holes 112 are arranged on the mounting plane 111 and extend vertically downward. The positioning holes 112 are located within the area enclosed by the arc groove 132. Specifically, the positioning holes 112 are threaded holes, and are connected to the positioning holes 112 through fasteners such as bolts or screws. The bolt or screw has a limiting head, and the limiting head is the screw head. By tightening the fastener, the connecting seat 131 is clamped between the base 11 and the limiting head, realizing the positioning of the connecting seat 131, and thus realizing the installation of the first test stand 13.

[0068] Since the splicing gap may not be exactly perpendicular to the test card after the first test stand 13 is installed, the direction of the first test card can be adjusted by adjusting the first test stand 13 to ensure that the splicing gap is exactly in the center of the first test card. After the adjustment is completed, the first test stand is positioned through the fastener.

[0069] In addition, the positioning holes 112 can also be smooth holes, and the positioning of the connecting seat 131 is realized by interference fit with a positioning pin having a limiting head.

[0070] In one embodiment, the base 11 is provided with an angle scale 113. The angle scale 113 has a plurality of scale bars arranged at intervals along a second arc trajectory. The center of the second arc trajectory is the same as the center of the first arc trajectory. The connecting seat 131 is provided with an indicator board 133. The indicator board 133 points to any scale bar. The indicator board 133 is integrally formed with the connecting seat 131. One end of the indicator board 133 is connected to the connecting seat 131, and the other end of the indicator board 133 extends along the direction close to the scale bar and the cross-sectional area gradually decreases to form a tip for pointing to the scale bar. The first test stand 13 can be detached from the base 11 through the separation of the connecting seat 131 from the base 11. The angle scale 113 is convenient for recording the position reading of the first test stand 13, which is convenient for reinstalling and using the first test stand 13 in the future.

[0071] In one embodiment, both the first test stand 13 and the second test stand 14 include a support frame 134 mounted on the base 11 and a test card board 135 mounted on the support frame 134; the test card board 135 has a test card surface 136 facing the frame 12. The support frame 134 is composed of a plurality of vertical tubes and horizontal tubes connected. There are gaps between adjacent vertical tubes and adjacent horizontal tubes, which can reduce the weight of the first test stand 13 and the second test stand 14. The test card board 135 is a flat plate. The back of the flat plate faces away from the frame 12, and the front of the test card board 135 is the test card surface 136, which is convenient for installing the first test card or the second test card.

[0072] As shown in Figure 1 , Figure 6 In one embodiment, the frame 12 includes a lifter 121 mounted on the base 11 and a support platform 122 drivingly connected to the lifter 121. The camera is disposed on the support platform 122, and a first connection hole 123 is formed on the support platform 122. The lifter 121 may be a telescopic device such as a cylinder, a hydraulic cylinder, or an electric telescopic rod. In this embodiment, the lifter 121 is two circular tubes connected by threads. By rotating one of the circular tubes, the support platform 122 at the upper end of the lifter 121 is lifted or lowered, so that the height of the camera can be adjusted. The first connection hole 123 is convenient for fixing the camera with a positioning pin, a threaded fastener, etc.

[0073] In one embodiment, a limiting ring 124 is provided on the support platform 122, and a plurality of second connection holes 125 are provided on the limiting ring 124. There are multiple first connection holes 123, and at least some of the first connection holes 123 correspond to and communicate with the second connection holes 125 one by one. Specifically, the lower end surface of the limiting ring 124 abuts against the upper surface of the support platform 122. There are two second connection holes 125 and they are spaced apart along the radial direction of the limiting ring 124. Both of the two second connection holes 125 penetrate through the limiting ring 124 along the axial direction of the limiting ring 124. There are four first connection holes 123, two of which are located in the area enclosed by the limiting ring 124, facilitating the positioning pin or the threaded fastener to pass through and fix the central area of the camera. The other two first connection holes 123 respectively correspond to the two second connection holes 125 one by one, facilitating the positioning pin or the threaded fastener to pass through and fix the edge of the camera.

[0074] As shown in Figure 1 , Figure 7 In one embodiment, at least one first test rack 13 and / or at least one second test rack 14 is provided with a pick-and-place opening 15, and a pick-and-place door 16 for covering or uncovering the pick-and-place opening 15 is movably mounted on the first test rack 13 and / or the second test rack 14.

[0075] When the first test rack is provided with a pick-and-place opening, a pick-and-place door for covering or uncovering the pick-and-place opening is movably mounted on the first test rack; when the second test rack is provided with a pick-and-place opening, a pick-and-place door for covering or uncovering the pick-and-place opening is movably mounted on the second test rack.

[0076] Specifically, in this embodiment, a pick-and-place opening 15 is formed on a second test rack 14. The pick-and-place opening 15 is formed on the support frame 134. The pick-and-place door 16 is mounted on the second test rack 14 through a hinge 137. During the test, the pick-and-place door 16 is rotated to cover the pick-and-place opening 15. Before the test or after the test is completed, the pick-and-place door 16 is rotated to uncover the pick-and-place opening 15, and the camera can be placed on the frame 12 or taken out of the frame 12 through the pick-and-place opening 15.

[0077] In one embodiment, the camera testing device further includes wheels and a brake for locking the wheels. Neither the wheels nor the brake is shown in the figure. The wheels are rotatably mounted on the base 11, and the brake is mounted on the base 11, enabling the rapid movement of the camera testing device.

[0078] The technical principle of the present invention has been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and should not be construed in any way as limiting the protection scope of the present invention. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present invention without creative efforts, and these embodiments will fall within the protection scope of the present invention.

Claims

1. A camera testing device, characterized in that, include: Base (11); A frame (12) for supporting a camera having a plurality of cameras; The frame (12) is mounted on the base (11); as well as A first test frame (13) for mounting a first test chart; the first test frame (13) is mounted on the base (11); There are a plurality of the first test racks (13), and the plurality of the first test racks (13) are arranged at intervals along the circumference of the frame (12).

2. The camera testing device according to claim 1, wherein It also includes a second test frame (14) for mounting a second test chart; there are a plurality of the second test frames (14), and the first test frames (13) and the second test frames (14) are alternately arranged along the circumference of the frame (12).

3. The camera testing device according to claim 2, wherein The distance between the first test frame (13) and the frame (12) is greater than the distance between the second test frame (14) and the frame (12).

4. The camera testing device according to claim 2, characterized in that, The height of the first test frame (13) is greater than the height of the second test frame (14).

5. The camera testing device according to any one of claims 1 to 4, characterized in that The first test stand (13) has a connecting seat (131) mounted on the base (11); the connecting seat (131) is provided with an arc groove (132) extending along a first arc track; the base (11) is provided with a plurality of positioning holes (112) arranged at intervals along the first arc track; the positioning holes (112) are located within an area enclosed by the arc groove (132).

6. The camera testing device according to claim 5, characterized in that, The base (11) is provided with an angle scale (113), the angle scale (113) having a plurality of scale bars arranged at intervals along a second arc track, the center of the second arc track being the same as the center of the first arc track; the connecting seat (131) is provided with an indicator plate (133), the indicator plate (133) pointing to any of the scale bars.

7. The camera testing device according to any one of claims 1 to 4, characterized in that The frame (12) comprises a lifter (121) mounted on the base (11) and a support platform (122) drivingly connected to the lifter (121); a first connection hole (123) is provided on the support platform (122).

8. The camera testing device according to claim 7, wherein, The support platform (122) is provided with a limiting ring (124), and the limiting ring (124) is provided with a plurality of second connection holes (125). There are a plurality of first connection holes (123), and at least some of the first connection holes (123) correspond to and are connected with the second connection holes (125) one by one.

9. The camera testing device according to any one of claims 2 to 4, characterized in that, At least one of the first test racks (13) and / or at least one of the second test racks (14) is provided with a taking-in and putting-out opening (15); When the first test rack (13) is provided with a pick-up and release opening (15), a pick-up and release door (16) for covering or uncovering the pick-up and release opening (15) is movably mounted on the first test rack (13); when the second test rack (14) is provided with a pick-up and release opening (15), a pick-up and release door (16) for covering or uncovering the pick-up and release opening (15) is movably mounted on the second test rack (14).

10. The camera testing device according to any one of claims 1 to 4, characterized in that, It also comprises a wheel and a brake for locking the wheel; the wheel is rotatably mounted on the base (11), and the brake is mounted on the base (11).

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