An imaging device bayonet detection tool

Abstract

The utility model discloses an imaging appearance card hole detection frock, including the ring, base and mounting seat, wherein, mounting seat is detachably connected with imaging appearance, base and mounting seat are detachably fixedly connected, the outside of base is provided with female screw, the inside of ring is provided with internal thread, and ring is connected with base screw, one side of ring away from mounting seat is provided with the pressing plate, a plurality of connecting lugs are provided on the side away from base of mounting seat along the circumferential direction, and mounting seat is connected with imaging appearance through connecting lug, the side close to base of mounting seat is provided with installation step, and base sets up on installation step, the pressing plate sets up a plurality, and the pressing plate is arc strip structure and is evenly spaced along the circumferential direction. Through this design, realize the quick assembly and reliable fixing of lens and imaging appearance, can provide even radial pressure when compressing lens, can guarantee the relative position accuracy of lens and imaging appearance photosensitive element, and provide reliable reference for imaging quality detection.

Description

Technical Field

[0001] This utility model belongs to the field of optical imaging equipment technology, specifically an imaging instrument bayonet detection fixture. Background Technology

[0002] In the field of optical imaging, the assembly precision of the lens and imager directly affects image quality. Therefore, in scenarios such as lens factory testing and maintenance, it is necessary to frequently temporarily assemble and disassemble the lens and imager to verify the original imaging state. With the trend of miniaturization and precision in optical products, higher requirements are placed on the compatibility, assembly and disassembly efficiency, and component protection of testing fixtures. Currently, the industry's testing process often needs to simulate the actual assembly relationship of the lens and imager to quickly obtain optical performance data (such as sharpness, distortion, etc.). This requires the fixture to achieve reliable fixation while avoiding damage to precision optical components. At the same time, facing diverse lens specifications and imager models, the versatility and ease of operation of testing fixtures have become key factors in improving production efficiency.

[0003] Traditional testing fixtures often employ rigid connection methods, such as direct screw fastening or snap-fit ​​connections. These structures have significant drawbacks: firstly, rigid connections are prone to lens coating wear and image sensor damage due to uneven force or positioning deviations during assembly and disassembly, affecting component yield and test result accuracy; secondly, traditional fixtures often apply clamping pressure at a single point or unevenly, easily causing lens deformation and optical axis misalignment, failing to accurately reflect the lens's original imaging state and thus impacting testing accuracy. Therefore, there is an urgent need for a testing fixture that combines rapid assembly and disassembly with uniform force application to meet the practical needs of modern optical testing scenarios. Utility Model Content

[0004] The purpose of this utility model is to provide an imaging instrument bayonet detection fixture to solve the following technical problems mentioned in the background art:

[0005] Traditional testing fixtures use rigid connections, which result in slow installation speeds and easy damage to the lens.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] An imager bayonet inspection fixture includes a pressure ring, a base, and a mounting base. The mounting base is detachably connected to the imager; the base and the mounting base are detachably fixedly connected; the outer side of the base is provided with external threads, and the inner side of the pressure ring is provided with internal threads, and the pressure ring is threadedly connected to the base; a pressure plate is provided on the side of the pressure ring away from the mounting base; a plurality of connecting lugs are provided on the side of the mounting base away from the base along the circumferential direction, and the mounting base is connected to the imager through the connecting lugs; a mounting step is provided on the side of the mounting base near the base, and the base is mounted on the mounting step; a plurality of pressure plates are provided, all of which are arc-shaped strip structures and are evenly spaced along the circumferential direction.

[0008] Furthermore, four connecting lugs are provided, one of which has a positioning groove.

[0009] Furthermore, the length of the positioning groove extends radially along the mounting base.

[0010] Furthermore, the base is bolted to the mounting base.

[0011] Furthermore, the mounting base is divided into two sections: the first section is a cylindrical structure, and the second section is a frustum-shaped cylindrical structure, with the two sections fixedly connected to each other.

[0012] Furthermore, an alignment step is provided on the side of the mounting base away from the base.

[0013] Furthermore, an arc-shaped limiting groove is provided on the outer side wall of the base; the pressure ring is provided with a limiting hole, and a limiting pin is provided in the limiting hole. The diameter of the limiting pin is smaller than the width of the limiting groove, and the bottom of the limiting pin extends into the limiting groove.

[0014] Furthermore, an alignment groove is provided on the inner side of the pressure ring near the pressure plate.

[0015] Furthermore, there are four pressure plates specifically configured.

[0016] Furthermore, the cross-section of the pressure plate is a right-angled trapezoidal structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention utilizes a threaded drive and pressure plate structure to achieve rapid assembly, disassembly, and reliable fixation of the lens and imager, avoiding damage to the lens or imager caused by traditional rigid connections. It is suitable for batch testing or repair scenarios before lenses leave the factory. The pressure plate adopts an arc-shaped strip structure with uniform circumferential distribution, providing uniform radial pressure when clamping the lens, preventing localized stress concentration that could lead to lens deformation or damage, and ensuring the stability of the optical system during testing. The design of the mounting steps and connecting lugs ensures the coaxiality of the imager and the base. Combined with the precise pre-tightening of the threaded drive, it guarantees the relative positional accuracy of the lens and the imager's photosensitive element, providing a reliable benchmark for image quality testing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This is a schematic diagram of the mounting base of this utility model;

[0022] Figure 4 This is a schematic diagram of the base of this utility model;

[0023] Figure 5 This is a schematic diagram of the pressure ring of this utility model.

[0024] The markings in the diagram are: 1-mounting base, 2-connecting lug, 3-positioning groove, 4-limiting hole, 5-pressure ring, 6-alignment step, 7-mounting step, 8-alignment groove, 9-pressure plate, 10-limiting groove, 11-base. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example:

[0027] An imaging camera bayonet inspection fixture, such as Figure 1 as well as Figure 2 As shown, the device includes a pressure ring 5, a base 11, and a mounting base 1. The mounting base 1 is detachably connected to the imager. The base 11 and the mounting base 1 are detachably fixedly connected. The outer side of the base 11 is provided with external threads, and the inner side of the pressure ring 5 is provided with internal threads. The pressure ring 5 is threadedly connected to the base 11. A pressure plate 9 is provided on the side of the pressure ring 5 away from the mounting base 1. Several connecting lugs 2 are provided on the side of the mounting base 1 away from the base 11 along the circumferential direction. The mounting base 1 is connected to the imager through the connecting lugs 2. A mounting step 7 is provided on the side of the mounting base 1 near the base 11. The base 11 is mounted on the mounting step 7. Several pressure plates 9 are provided. The pressure plates 9 are all arc-shaped strip structures and are evenly spaced along the circumferential direction.

[0028] Specifically, during use, the imager is detachably connected via the connecting lugs 2 on the mounting base 1, using methods such as screws or clips for fixation, ensuring stable positioning of the imager during testing. The base 11 is mounted on the mounting step 7 of the mounting base 1 and is detachably fixed to the mounting base 1 using methods such as screws or clips, forming the basic support structure of the tooling. The external thread on the outer side of the base 11 engages with the internal thread on the inner side of the pressure ring 5, allowing the pressure ring 5 to move axially by rotation. The pressure plate 9 on the pressure ring 5 moves with the pressure ring 5, gradually pressing the lens or lens assembly, achieving temporary fixation between the lens and the imager through the preload force transmitted by the threads. The lens is fixed to the front end of the imager by the pressing action of the pressure plate 9, forming a temporary assembly structure. At this time, the imager can acquire the original imaging data of the lens to test its optical performance.

[0029] The design utilizes a threaded drive and pressure plate 9 to achieve rapid assembly, disassembly, and reliable fixation of the lens and imager, avoiding damage to the lens or imager caused by traditional rigid connections. This is suitable for batch testing or repair of lenses before they leave the factory. The pressure plate 9 features an arc-shaped strip structure with uniform circumferential distribution, providing uniform radial pressure when clamping the lens. This prevents localized stress concentration that could lead to lens deformation or damage, ensuring the stability of the optical system during testing. The design of the mounting step 7 and connecting lug 2 ensures the coaxiality of the imager and the base 11. Combined with the precise pre-tightening of the threaded drive, this guarantees the relative positional accuracy of the lens and the imager's photosensitive element, providing a reliable benchmark for image quality testing.

[0030] In a preferred embodiment, such as Figure 1 As shown, four connecting lugs 2 are provided, one of which has a positioning groove 3. The four connecting lugs 2 can evenly distribute the stress generated during installation, ensuring a stable connection between the imager and the mounting base 1. The positioning groove 3 on one of the connecting lugs 2 allows for unique and precise positioning of the imager and the mounting base 1 through structures such as positioning pins, avoiding circumferential misalignment and ensuring the coaxiality and detection accuracy of the lens and the imager's photosensitive element. Further optimized, the positioning groove 3 extends radially along the mounting base 1. This radial extension of the positioning groove 3 allows for slight radial adjustments of the imager based on circumferential positioning, thereby compensating for manufacturing errors. Simultaneously, the radial limit ensures a unique circumferential installation position, further improving the positioning accuracy and assembly compatibility of the imager and the mounting base 1, and ensuring optical coaxiality during lens inspection.

[0031] In a preferred embodiment, the base 11 is bolted to the mounting base 1. The bolted connection between the base 11 and the mounting base 1 allows for quick assembly and disassembly. The bolted connection provides high structural strength and facilitates adjustment of the assembly position, ensuring the coaxiality and stability of the base 11 and the mounting base 1. It also adapts to the tooling disassembly requirements under different testing scenarios, improving testing efficiency and tooling reusability.

[0032] In a preferred embodiment, such as Figure 3 As shown, the mounting base 1 is divided into two sections: the first section is a cylindrical structure, and the second section is a frustum-shaped cylindrical structure, with the two sections fixedly connected to each other. The first section of the cylindrical structure can be adapted to the imager for coaxial installation, while the end face of the second section is provided with a mounting step 7 to achieve precise positioning with the base 11, facilitating lens installation.

[0033] In a preferred embodiment, such as Figure 2 As shown, an alignment step 6 is provided on the side of the mounting base 1 away from the base 11. The alignment step 6 can fit against the mounting end face of the imager. Through the height difference of the step and planar positioning, the initial axial and circumferential alignment of the imager and the mounting base 1 can be quickly achieved, reducing assembly errors and improving installation efficiency. At the same time, it ensures the perpendicularity accuracy of the imager's photosensitive surface and the lens optical axis, ensuring the accuracy of imaging detection.

[0034] In a preferred embodiment, such as Figure 4 As shown, an arc-shaped limiting groove 10 is provided on the outer side wall of the base 11; the pressure ring 5 is provided with a limiting hole 4, and a limiting pin is provided in the limiting hole 4. The diameter of the limiting pin is smaller than the width of the limiting groove 10, and the bottom of the limiting pin extends into the limiting groove 10. The fact that the diameter of the limiting pin is smaller than the width of the limiting groove 10 allows the limiting pin to move along the axial direction of the base 11, while also allowing the pressure ring 5 to rotate. The circumferential rotation range of the pressure ring 5 is limited by the boundary of the limiting groove 10, avoiding excessive rotation that could damage the threads or cause overpressure on the pressure plate 9, thus serving to guide, limit, and protect the threaded connection.

[0035] In a preferred embodiment, such as Figure 2 As shown, an alignment groove 8 is provided on the inner side of the pressure ring 5 near the pressure plate 9. The alignment groove 8 on the inner side of the pressure ring 5 can cooperate with the edge of the lens to achieve initial axial and radial positioning during lens installation, ensuring that the optical axis of the lens is coaxial with the image sensor of the imager. At the same time, it helps the pressure plate 9 to evenly press the lens, reduce assembly deviation, and improve the accuracy and stability of lens installation during testing.

[0036] In a preferred embodiment, such as Figure 5 As shown, there are four pressure plates 9. The four pressure plates 9 are evenly distributed circumferentially, which can apply a balanced radial clamping force to the lens, avoid uneven local force that may cause lens deformation, and form a stable four-point support structure, which enhances the coaxiality and vibration resistance of the lens after installation, and ensures the stability of the optical system and imaging accuracy during the testing process.

[0037] In a preferred embodiment, such as Figure 2As shown, the cross-section of the pressure plate 9 is a right-angled trapezoidal structure. The right-angled trapezoidal cross-section of the pressure plate 9 allows its hypotenuse to create a progressive clamping effect when the pressure ring 5 is tightened, avoiding rigid impact damage to the lens; the right-angled side fits against the outer circumference of the lens, providing a stable support surface, while the thickness variation of the trapezoidal structure enhances the rigidity of the pressure plate 9 itself, preventing deformation during clamping and ensuring uniform force application and reliable fixation.

[0038] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for detecting the bayonet mount of an imaging device, characterized in that: It includes a pressure ring (5), a base (11) and a mounting base (1), wherein the mounting base (1) is detachably connected to the imager; the base (11) and the mounting base (1) are detachably fixedly connected; the outer side of the base (11) is provided with an external thread, the inner side of the pressure ring (5) is provided with an internal thread, and the pressure ring (5) is threadedly connected to the base (11); a pressure plate (9) is provided on the side of the pressure ring (5) away from the mounting base (1); The mounting base (1) has several connecting lugs (2) on the side away from the base (11) along the circumferential direction. The mounting base (1) is connected to the imager through the connecting lugs (2). The mounting base (1) has an installation step (7) on the side near the base (11). The base (11) is placed on the installation step (7). Several pressure plates (9) are provided. The pressure plates (9) are all arc-shaped strip structures and are evenly spaced along the circumferential direction.

2. The imaging camera bayonet detection fixture according to claim 1, characterized in that: There are four connecting lugs (2), one of which has a positioning groove (3).

3. The imaging camera bayonet detection fixture according to claim 1, characterized in that: The groove length of the positioning groove (3) extends radially along the mounting base (1).

4. The imaging camera bayonet detection fixture according to claim 1, characterized in that: The base (11) is bolted to the mounting base (1).

5. The imaging camera bayonet detection fixture according to claim 1, characterized in that: The mounting base (1) is divided into two sections. The first section is a cylindrical structure, and the second section is a frustum-shaped cylindrical structure. The two sections are fixedly connected to each other.

6. The imaging camera bayonet detection fixture according to claim 1, characterized in that: An alignment step (6) is provided on the side of the mounting base (1) away from the base (11).

7. The imaging camera bayonet detection fixture according to claim 1, characterized in that: An arc-shaped limiting groove (10) is provided on the outer side wall of the base (11); the pressure ring (5) is provided with a limiting hole (4), and a limiting pin is provided in the limiting hole (4). The diameter of the limiting pin is smaller than the width of the limiting groove (10), and the bottom of the limiting pin extends into the limiting groove (10).

8. The imaging instrument bayonet detection fixture according to claim 1, characterized in that: An alignment groove (8) is provided on the inner side of the pressure ring (5) near the pressure plate (9).

9. The imaging instrument bayonet detection fixture according to claim 1, characterized in that: There are four pressure plates (9).

10. The imaging instrument bayonet detection fixture according to claim 1, characterized in that: The cross section of the pressure plate (9) is a right trapezoidal structure.

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