Camera module calibration device

Abstract

The invention belongs to the technical field of camera mounting, and discloses a camera module calibration device which comprises a base, a supporting plate, a suction nozzle assembly and an angle sensor, the supporting plate is arranged on the base in a sliding mode, a cavity is formed in the supporting plate, the cavity is provided with a vertical face, and the included angle between the cavity and the supporting plate is adjusted through an adjusting structure; the suction nozzle assembly comprises a driving part, a suction nozzle seat and a suction nozzle head, the driving part is installed in the cavity, the suction nozzle seat is in transmission connection with the output end of the driving part, the suction nozzle seat can rotate and coaxially penetrates through the cavity in a sealed mode, and the suction nozzle head is installed at the top end of the suction nozzle seat and used for bearing materials (such as a camera module); the angle sensor is fixedly arranged on the vertical face through a mounting plate, and the mounting plate is parallel to the vertical face. According to the camera module calibration device, field debugging is facilitated, and the calibration efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of camera mounting, and in particular to a camera module calibration device. BACKGROUND

[0002] With the rapid development of consumer electronics, autonomous driving, security monitoring and other fields, the market puts forward increasingly stringent requirements on the imaging quality of camera modules, from the clarity and color restoration of daily photography to the low-light imaging performance and edge image stability in special scenarios, which have become the core indicators of product competitiveness. In the manufacturing process of camera modules, the alignment accuracy of the lens and the image sensor (hereinafter referred to as "sensor") is the key link to determine the final imaging quality. The relative position and angle deviation between the two will directly cause problems such as clarity decline, picture distortion (such as pillow distortion and barrel distortion), edge dark corner, field angle deviation, and even cause the module to fail to meet the basic functional requirements of the application scenario in severe cases.

[0003] In the related art, the mounting process in the field of camera module manufacturing is still dominated by traditional technology, mainly including static adjustment and manual calibration. These two implementation methods have many problems. First, the angle deviation is difficult to correct in real time. During the mounting operation, mechanical vibration generated by the equipment, material thermal or cold deformation, transmission error of the mounting equipment itself (such as screw gap and guide rail parallelism deviation), etc. may cause the lens to tilt, and the above-mentioned angle deviation cannot be corrected online during mounting. Second, it relies on post-processing software compensation. Through image algorithms, the collected pictures are processed for distortion correction and dark corner compensation, which cannot solve the optical deviation at the hardware level and affect the low-light performance and edge image quality. Finally, the high-precision mounting process is inefficient, which restricts the production speed.

[0004] Therefore, there is an urgent need for a camera module calibration device to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a camera module calibration device to solve the problem of low efficiency of the mounting process caused by the difficulty of camera module calibration in the prior art. The camera module calibration device helps on-site debugging and improves calibration efficiency.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] A camera module calibration device, comprising:

[0008] a base;

[0009] a support plate slidably arranged on the base, a cavity is arranged on the support plate, the cavity has a vertical surface, and the included angle between the cavity and the support plate is adjusted by an adjusting structure;

[0010] The nozzle assembly comprises a driving member, a nozzle seat and a nozzle head, the driving member is installed in the cavity, the nozzle seat is in transmission connection with the output end of the driving member, and the nozzle seat is rotatable and coaxially sealed through the cavity, and the nozzle head is installed at the top end of the nozzle seat and used for supporting the material.

[0011] The angle sensor is fixedly arranged on the vertical surface through a mounting plate, and the mounting plate is parallel to the vertical surface.

[0012] In some possible embodiments, the adjusting structure comprises a locking assembly and a leveling assembly, the locking assembly comprises a threaded member and an elastic member, the threaded member comprises a guide rod, the guide rod penetrates the cavity, one end of the guide rod is screwed to the support plate, and the other end of the guide rod is provided with a cap portion, the elastic member is sleeved on the guide rod and located between the cap portion and the cavity, the elastic member is compressed by screwing the threaded member, and the cavity is leveled by adjusting the leveling assembly.

[0013] In some possible embodiments, the elastic member is a wave spring or a disc spring.

[0014] In some possible embodiments, the leveling assembly comprises a jackscrew and a ball head protruding from one end of the jackscrew, the jackscrew is screwed to penetrate the cavity, the ball head protrudes out of the cavity and abuts against the V-shaped groove, and the V-shaped groove is arranged on the support plate.

[0015] In some possible embodiments, a positioning assembly is arranged between the cavity and the support plate, the positioning assembly comprises at least two positioning balls, at least two arc-shaped grooves are arranged on the cavity, and at least two positioning balls correspond to the at least two arc-shaped grooves one by one, at least two circular grooves are arranged on the support plate, and at least two positioning balls correspond to the at least two circular grooves one by one.

[0016] In some possible embodiments, a bracket is arranged on the base, the bracket is arranged below the support plate, and a pressure sensor is installed between the bracket and the support plate.

[0017] In some possible embodiments, the bracket is in an L-shaped structure, the pressure sensor is installed on one branch plate of the L-shaped structure through a shaft shoulder threaded member, and the other branch plate of the L-shaped structure is fixedly connected with the base.

[0018] In some possible implementation manners, the cavity comprises a bottom plate, a cylindrical ring and a top plate connected with each other, the bottom plate is arranged on the support plate through the adjusting structure, the nozzle seat penetrates through the bottom plate, the cylindrical ring and the top plate, and the nozzle seat is rotatably and coaxially sealedly connected with the bottom plate through a first sealing structure and rotatably and coaxially sealedly connected with the top plate through a second sealing structure.

[0019] In some possible implementation manners, the first sealing structure comprises a first lip-shaped sealing ring and a snap spring, the first lip-shaped sealing ring comprises a first abutting ring and first and second sealing rings vertically and spacedly arranged on the first abutting ring, the first abutting ring is sleeved on the nozzle seat and fixed on the cavity through the snap spring, the nozzle seat is rotatably sealedly contacted with the first sealing ring, and the cavity is sealedly contacted with the second sealing ring.

[0020] In some possible implementation manners, the second sealing structure comprises a sealing sleeve and a second lip-shaped sealing ring, the sealing sleeve is coaxially arranged in the cavity, the second lip-shaped sealing ring comprises a second abutting ring and third and fourth sealing rings vertically and spacedly arranged on the second abutting ring, the second abutting ring is sleeved on the nozzle seat and abuts against the sealing sleeve, the nozzle seat is rotatably sealedly contacted with the third sealing ring, and the cavity is sealedly contacted with the fourth sealing ring.

[0021] In some possible implementation manners, the material of the first lip-shaped sealing ring and the material of the second lip-shaped sealing ring are both carbon fibers.

[0022] In some possible implementation manners, a counterweight is arranged at the bottom of the base.

[0023] In some possible implementation manners, the material of the base, the material of the support plate and the material of the cavity are all aluminum alloys.

[0024] In some possible implementation manners, the camera module calibration device further comprises a flexible air pipe, a right-angle adapter and a corner adapter, the flexible air pipe is communicated with the cavity through the right-angle adapter and the corner adapter.

[0025] The present application has the following beneficial effects:

[0026] The camera module calibration device provided by the application has the advantages that the angle sensor can detect and feedback the inclination angle of the cavity relative to the horizontal plane in real time, and then the inclination angle of the material on the nozzle assembly installed on the cavity relative to the horizontal plane is obtained; when the inclination angle of the material does not meet the requirement, the included angle between the cavity and the supporting plate is adjusted through the adjusting structure, and then the inclination angle of the material on the nozzle assembly installed on the cavity is adjusted, which is helpful for on-site debugging and improves the calibration efficiency; the driving member can drive the nozzle seat and the nozzle head to rotate by 360 degrees, the nozzle head rotates by 360 degrees with the material, the movement degree of freedom of the material is improved, the object is avoided, and the use flexibility is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a three-dimensional view of the camera module calibration device from another perspective provided by the embodiment of the application;

[0028] Figure 2 is a three-dimensional view of the camera module calibration device from another perspective provided by the embodiment of the application;

[0029] Figure 3 is a partial structure schematic view of the camera module calibration device provided by the embodiment of the application;

[0030] Figure 4 is an assembly schematic view of the adjusting structure, the nozzle assembly and the supporting plate provided by the embodiment of the application;

[0031] Figure 5 is a structure schematic view of the nozzle assembly provided by the embodiment of the application;

[0032] Figure 6 is an assembly schematic view of the adjusting structure, the cavity, the nozzle assembly and the supporting plate provided by the embodiment of the application;

[0033] Figure 7 is a three-dimensional view of the cavity from a perspective provided by the embodiment of the application;

[0034] Figure 8 is a three-dimensional view of the cavity from another perspective provided by the embodiment of the application;

[0035] Figure 9 is an assembly schematic view of the supporting plate and the guide rail provided by the embodiment of the application;

[0036] Figure 10 is a structure schematic view of the first lip-shaped sealing ring provided by the embodiment of the application;

[0037] Figure 11 is a structure schematic view of the second lip-shaped sealing ring provided by the embodiment of the application;

[0038] Figure 12is a structural schematic view of a locking assembly provided by an embodiment of the present application.

[0039] Figure 13 is a partial structural schematic view of a leveling assembly provided by an embodiment of the present application.

[0040] in the figure:

[0041] 100, base; 200, support plate; 210, circular groove; 300, cavity; 310, bottom plate; 311, arc-shaped groove; 320, cylindrical ring; 321, vertical surface; 330, top plate; 410, locking assembly; 411, threaded part; 4111, guide rod; 4112, cap portion; 412, elastic part; 420, leveling assembly; 421, jackscrew; 422, ball head; 423, V-shaped groove; 510, driving part; 520, suction nozzle seat; 530, suction nozzle head; 540, bearing; 550, pressing plate; 600, angle sensor; 700, mounting plate; 810, positioning ball; 900, bracket; 1000, pressure sensor; 1100, shaft shoulder threaded part; 1210, first lip-shaped sealing ring; 1211, first abutting ring; 1212, first sealing ring; 1213, second sealing ring; 1220, clamping spring; 1310, sealing sleeve; 1320, second lip-shaped sealing ring; 1321, second abutting ring; 1322, third sealing ring; 1323, fourth sealing ring; 1400, right-angle adapter; 1500, corner adapter; 1600, guide rail; 10, material. DETAILED DESCRIPTION

[0042] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0043] In the description of the present application, unless explicitly defined and limited otherwise, the terms "connected", "connected", "fixed" should be understood broadly, for example, can be fixedly connected, can be detachably connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] like Figures 1 to 13 As shown, this embodiment provides a camera module calibration device, including a base 100, a support plate 200, a nozzle assembly, and an angle sensor 600. The support plate 200 is slidably mounted on the base 100 via a guide rail 1600. A cavity 300 is provided on the support plate 200, and the cavity 300 has a vertical surface 321. The included angle between the cavity 300 and the support plate 200 is adjusted by an adjustment structure. The nozzle assembly includes a drive member 510, a nozzle seat 520, and a nozzle head 530. The drive member 510 is mounted on the cavity 300. The nozzle seat 520 is drivenly connected to the output end of the drive member 510, and the nozzle seat 520 is rotatable and coaxially sealed through the cavity 300. The nozzle head 530 is mounted on the top of the nozzle seat 520 for supporting material 10 (such as a camera module). The angle sensor 600 is fixedly mounted on the vertical surface 321 via a mounting plate 700, which is parallel to the vertical surface 321. It is easy to see that the angle sensor 600 can be set as a high-precision angle sensor 600 or a low-precision angle sensor 600. The high-precision angle sensor 600 has a resolution of 0.001 degrees, and the low-precision angle sensor 600 has a resolution of 0.01 degrees. The specific type of angle sensor 600 can be selected according to the needs of the site to adapt to the material 10 mounting process with different requirements.

[0047] The camera module calibration device provided by the embodiment can detect and feedback the inclination angle of the cavity 300 relative to the horizontal plane in real time through the angle sensor 600, and then obtain the inclination angle of the material 10 on the nozzle assembly installed on the cavity 300 relative to the horizontal plane. When the inclination angle of the material 10 does not meet the requirements, the angle between the cavity 300 and the support plate 200 is adjusted through the adjusting structure, and then the inclination angle of the material 10 on the nozzle assembly installed on the cavity 300 is adjusted, which is helpful for on-site debugging and improves the calibration efficiency. The driving member 510 can drive the nozzle seat 520 and the nozzle head 530 to rotate by 360°, the nozzle head 530 rotates by 360° with the material 10, the movement degree of freedom of the material 10 is improved, the object is avoided, and the use flexibility is improved.

[0048] Optionally, the adjusting structure comprises a locking assembly 410 and a leveling assembly 420. The locking assembly 410 comprises a threaded member 411 and an elastic member 412. The threaded member 411 comprises a guide rod 4111. The guide rod 4111 penetrates the cavity 300 and is screwed to the support plate 200 at one end. The other end of the guide rod 4111 is provided with a cap portion 4112. The elastic member 412 is sleeved on the guide rod 4111 and located between the cap portion 4112 and the cavity 300. By screwing the threaded member 411, the elastic member 412 is compressed, and the cavity 300 is leveled by adjusting the leveling assembly 420. By screwing the threaded member 411, the elastic member 412 is compressed, and the other end of the guide rod 4111 away from the cap portion 4112 is screwed and fixed to the support plate 200, and the cavity 300 and the support plate 200 are locked. During use, the elastic member 412 is always in a compressed state, and the cavity 300 is leveled by adjusting the leveling assembly 420, which is simple to operate. Figure 6 As shown in the figure, four locking assemblies 410 and three leveling assemblies 420 are arranged in the embodiment. The four locking assemblies 410 are uniformly distributed along the circumference of the cavity 300, and the three leveling assemblies 420 are uniformly distributed along the circumference of the cavity 300. Through the cooperation of the plurality of locking assemblies 410 and the plurality of leveling assemblies 420, the leveling accuracy of the cavity 300 is improved. In other embodiments, the number of locking assemblies 410 and the number of leveling assemblies 420 can be set to other numbers, such as three or five, and so on, according to the needs.

[0049] Optionally, the elastic member 412 is a wave spring or a disc spring. The wave spring is punched from a metal sheet and has a continuous wavy annular structure. The wave spring realizes the elastic function through compression and rebound of the waves. The axial height of the wave spring is extremely small, and the radial size is compact, which can effectively save installation space. The deformation process of the wave spring is uniform, the load linearity is good, the buffering is stable, and the installation is simple. The disc spring has a conical disc structure. The disc spring realizes the elastic function through the compression deformation of the conical surface. The unit space bearing capacity of the disc spring is relatively strong, and the use reliability is relatively good.

[0050] Further, the leveling assembly 420 includes a top screw 421 and a ball head 422 protruding from one end of the top screw 421. The top screw 421 is screwed through the cavity 300, and the ball head 422 protrudes from the cavity 300 and abuts against the V-shaped groove 423. The V-shaped groove 423 is arranged on the support plate 200. When the cavity 300 is leveled, the threaded part 411 is screwed, the elastic member 412 is compressed, the guide rod 4111 is screwed and fixed to the support plate 200 at the end away from the cap 4112, and the cavity 300 and the support plate 200 are locked; then, by screwing the top screw 421, the ball head 422 abuts against the inner wall surface of the V-shaped groove 423 to adjust the levelness of the cavity 300. The structure of the leveling assembly 420 is simple, which is convenient for processing and manufacturing, and reduces the manufacturing cost. In this embodiment, three leveling assemblies 420 are uniformly distributed along the circumference of the cavity 300, and the cavity 300 is leveled by adjusting the three leveling assemblies 420.

[0051] As preferred, a positioning assembly is arranged between the cavity 300 and the support plate 200. The positioning assembly includes at least two positioning balls 810. At least two arc-shaped grooves 311 are arranged on the cavity 300, and the at least two arc-shaped grooves 311 correspond to the at least two positioning balls 810 one by one. At least two circular grooves 210 are arranged on the support plate 200, and the at least two circular grooves 210 correspond to the at least two positioning balls 810 one by one. When the cavity 300 and the support plate 200 are installed, the positioning assembly is used to complete the pre-positioning of the cavity 300 and the support plate 200, which improves the assembly accuracy and efficiency.

[0052] Optionally, a bracket 900 is arranged on the base 100. The bracket 900 is arranged below the support plate 200, and a pressure sensor 1000 is arranged between the bracket 900 and the support plate 200. The pressure sensor 1000 can feedback the mounting force of the material 10 in real time to assist in improving the mounting quality.

[0053] In this embodiment, the bracket 900 has an L-shaped structure. The pressure sensor 1000 is installed on one branch plate of the L-shaped structure through an axial shoulder threaded part 1100, and the other branch plate of the L-shaped structure is fixedly connected with the base 100. The pressure sensor 1000 is installed on the bracket 900 through the axial shoulder threaded part 1100, which is convenient for disassembly and assembly.

[0054] Optionally, the cavity 300 comprises a bottom plate 310, a cylindrical ring 320 and a top plate 330 connected with each other, the bottom plate 310 is arranged on the support plate 200 through an adjusting structure, the suction seat 520 is arranged through the bottom plate 310, the cylindrical ring 320 and the top plate 330, the suction seat 520 is rotatably and coaxially sealedly connected with the bottom plate 310 through a first sealing structure, and is rotatably and coaxially sealedly connected with the top plate 330 through a second sealing structure. A sealed chamber is formed in the cavity 300 for communicating with an external air pipe, and the suction seat 520 is arranged in an air passage communicating with the sealed chamber; the bottom plate 310 is arranged to facilitate assembly of the cavity 300 and the support plate 200. In the embodiment, the bottom plate 310 is provided with an open slot at each corner for mounting the locking assembly 410, so as to improve the assembly convenience of the locking assembly 410.

[0055] Optionally, the top surface of the top plate 330 is provided with an annular groove, a bearing 540 is arranged in the annular groove, the bearing 540 is sleeved on the suction seat 520, and the bearing 540 is fixed to the top plate 330 through a pressing plate 550. The bearing 540 can reduce the friction between the suction seat 520 and the top plate 330, and improve the motion reliability of the suction seat 520.

[0056] In the embodiment, the first sealing structure comprises a first lip-shaped sealing ring 1210 and a circlip 1220, the first lip-shaped sealing ring 1210 comprises a first abutting ring 1211, a first sealing ring 1212 and a second sealing ring 1213 which are vertically and spacedly arranged on the first abutting ring 1211, the first abutting ring 1211 is sleeved on the suction seat 520 and is fixed to the cavity 300 through the circlip 1220, the suction seat 520 is rotatably and sealingly contacted with the first sealing ring 1212, and the cavity 300 is sealingly contacted with the second sealing ring 1213. During rotation of the suction seat 520, the first sealing ring 1212 can be flexibly and tightly attached to the suction seat 520, the second sealing ring 1213 is flexibly and tightly attached to the cavity 300, and the dynamic sealing stability is high; the first lip-shaped sealing ring 1210 has a simple structure and is convenient to assemble.

[0057] Optionally, the second sealing structure comprises a sealing sleeve 1310 and a second lip-shaped sealing ring 1320, the sealing sleeve 1310 is coaxially arranged in the cavity 300, the second lip-shaped sealing ring 1320 comprises a second abutting ring 1321, a third sealing ring 1322 and a fourth sealing ring 1323 which are vertically and spacedly arranged on the second abutting ring 1321, the second abutting ring 1321 is sleeved on the suction seat 520 and abuts against the sealing sleeve 1310, the suction seat 520 is rotatably and sealingly contacted with the third sealing ring 1322, and the cavity 300 is sealingly contacted with the fourth sealing ring 1323. During rotation of the suction seat 520, the third sealing ring 1322 can be flexibly and tightly attached to the suction seat 520, the fourth sealing ring 1323 is flexibly and tightly attached to the cavity 300, and the dynamic sealing stability is high; the second lip-shaped sealing ring 1320 has a simple structure and is convenient to assemble.

[0058] Preferably, the material of the first lip seal 1210 and the material of the second lip seal 1320 are both carbon fiber. Carbon fiber is a kind of inorganic non-metallic fiber with carbon content higher than 90%, which is made of polyacrylonitrile, pitch, viscose fiber, etc. by high-temperature carbonization and graphitization. Carbon fiber has good mechanical properties and excellent wear resistance, which can reduce the wear caused by the friction between the nozzle seat 520 and the seal.

[0059] Optionally, the bottom of the base 100 is provided with a counterweight, which is used to adjust the center of gravity of the camera module calibration device to the vertical direction to reduce the shaking of the camera module calibration device in the vertical direction.

[0060] In this embodiment, the material of the base 100, the material of the support plate 200 and the material of the cavity 300 are all aluminum alloy, such as 6061 aluminum alloy. Aluminum alloy is light in weight, which effectively reduces the overall weight of the camera module calibration device. Optionally, the rotating shaft of the driving member 510 can be made of stainless steel, which has high strength and toughness and can maintain stable performance in a vibrating or impacting environment.

[0061] Optionally, the camera module calibration device further comprises a flexible air pipe, a right-angle adapter 1400 and a corner adapter 1500. The flexible air pipe is in communication with the cavity 300 through the right-angle adapter 1400 and the corner adapter 1500, and the right-angle adapter 1400 and the corner adapter 1500 support the flexible air pipe, effectively reducing the influence of the flexible air pipe on the pressure sensor 1000 when the flexible air pipe is ventilated.

[0062] Obviously, the above embodiments of the present application are only examples for clarity, and are not intended to limit the embodiments of the present application. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A camera module calibration device, characterized in that, The utility model relates to a kind of suction nozzle device, including: Base (100); Supporting plate (200) is slidably arranged in base (100), cavity (300) is arranged on the supporting plate (200), the cavity (300) has vertical surface (321), and the included angle between the cavity (300) and the supporting plate (200) is adjusted by adjusting structure; Suction nozzle assembly, including driving element (510), suction nozzle seat (520) and suction nozzle head (530), the driving element (510) is installed in the cavity (300), the suction nozzle seat (520) is drivingly connected with the output end of the driving element (510), and the suction nozzle seat (520) can be rotated and coaxially sealed through the cavity (300), and the suction nozzle head (530) is installed at the top end of the suction nozzle seat (520), for supporting material (10); Angle sensor (600) is fixedly arranged on the vertical surface (321) by mounting plate (700), and the mounting plate (700) is parallel to the vertical surface (321).

2. The camera module calibration apparatus of claim 1, wherein, The adjusting structure includes locking assembly (410) and leveling assembly (420), the locking assembly (410) includes threaded part (411) and elastic element (412), the threaded part (411) includes guide rod (4111), the guide rod (4111) is penetrated in the cavity (300), and one end of the guide rod (4111) is screwed in the supporting plate (200), the other end of the guide rod (4111) is provided with cap portion (4112), the elastic element (412) is sleeved on the guide rod (4111) and located between the cap portion (4112) and the cavity (300), the elastic element (412) is compressed by screwing the threaded part (411), and the cavity (300) is leveled by adjusting the leveling assembly (420).

3. The camera module calibration apparatus of claim 2, wherein, The elastic element (412) is a wave spring or a disc spring.

4. The camera module calibration apparatus of claim 2, wherein, The leveling assembly (420) includes jackscrew (421) and ball head (422) protruding from one end of the jackscrew (421), the jackscrew (421) is screwed and penetrated in the cavity (300), the ball head (422) protrudes from the cavity (300) and abuts and contacts in V-shaped groove (423), and the V-shaped groove (423) is arranged on the supporting plate (200).

5. The camera module calibration apparatus of claim 1, wherein, Positioning assembly is arranged between the cavity (300) and the supporting plate (200), the positioning assembly includes at least two positioning balls (810), at least two arc-shaped grooves (311) are arranged on the cavity (300), at least two arc-shaped grooves (311) correspond to at least two positioning balls (810) one by one, at least two circular grooves (210) are arranged on the supporting plate (200), and at least two circular grooves (210) correspond to at least two positioning balls (810) one by one.

6. The camera module calibration apparatus of claim 1, wherein, Support (900) is arranged on the base (100), the support (900) is arranged below the supporting plate (200), and pressure sensor (1000) is installed between the support (900) and the supporting plate (200).

7. The camera module calibration apparatus of claim 6, wherein, The support (900) is in an L-shaped structure, the pressure sensor (1000) is installed on one branch plate of the L-shaped structure through a shaft shoulder screw (1100), and the other branch plate of the L-shaped structure is fixedly connected with the base (100).

8. The camera module calibration apparatus of claim 1, wherein, The cavity (300) comprises a bottom plate (310), a cylindrical ring (320) and a top plate (330) connected with each other, the bottom plate (310) is arranged on the support plate (200) through the adjusting structure, and the nozzle seat (520) penetrates through the bottom plate (310), the cylindrical ring (320) and the top plate (330). The nozzle seat (520) is rotatably and coaxially sealedly connected with the bottom plate (310) through a first sealing structure and rotatably and coaxially sealedly connected with the top plate (330) through a second sealing structure.

9. The camera module calibration apparatus of claim 8, wherein, The first sealing structure comprises a first lip-shaped sealing ring (1210) and a clasp spring (1220). The first lip-shaped sealing ring (1210) comprises a first abutting ring (1211) and first and second sealing rings (1212 and 1213) vertically and spaced apart from each other on the first abutting ring (1211). The first abutting ring (1211) is sleeved on the nozzle seat (520) and fixed on the cavity (300) through the clasp spring (1220). The nozzle seat (520) is rotatably sealedly contacted with the first sealing ring (1212), and the cavity (300) is sealedly contacted with the second sealing ring (1213).

10. The camera module calibration apparatus of claim 9, wherein, The second sealing structure comprises a sealing sleeve (1310) and a second lip-shaped sealing ring (1320). The sealing sleeve (1310) is coaxially arranged in the cavity (300). The second lip-shaped sealing ring (1320) comprises a second abutting ring (1321) and third and fourth sealing rings (1322 and 1323) vertically and spaced apart from each other on the second abutting ring (1321). The second abutting ring (1321) is sleeved on the nozzle seat (520) and abuts against the sealing sleeve (1310). The nozzle seat (520) is rotatably sealedly contacted with the third sealing ring (1322), and the cavity (300) is sealedly contacted with the fourth sealing ring (1323).

11. The camera module calibration apparatus of claim 10, wherein, The material of the first lip-shaped sealing ring (1210) and the material of the second lip-shaped sealing ring (1320) are both carbon fibers.

12. The camera module calibration apparatus of claim 1, wherein, A counterweight is arranged at the bottom of the base (100).

13. The camera module calibration apparatus of claim 1, wherein, The material of the base (100), the material of the support plate (200) and the material of the cavity (300) are all aluminum alloy.

14. The camera module calibration apparatus of claim 1, wherein, The camera module calibration device further comprises a flexible air pipe, a right-angle adapter (1400) and a corner adapter (1500). The flexible air pipe is communicated with the cavity (300) through the right-angle adapter (1400) and the corner adapter (1500).

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