An adjustable coaxial camera lens fixing structure

Abstract

The utility model relates to industrial camera technical field discloses an adjustable coaxial camera lens fixing structure, including lens clamping seat, double -deck polarizing mirror mechanism, spring seat and mirror mechanism, camera lens is locked on lens clamping seat through screw, double -deck polarizing mirror mechanism includes fixed polarizing mirror subassembly and movable polarizing mirror subassembly, and fixed polarizing mirror subassembly installs at the bottom of lens clamping seat, and movable polarizing mirror subassembly includes slide, lens mounting seat and lens fixed part, lens mounting seat installs at the bottom of fixed polarizing mirror subassembly, and the bottom of lens mounting seat is installed with connecting structure, and lens fixed part is rotatably connected in lens mounting seat, and the movable polaroid is installed on lens fixed part, and a plurality of moment springs are installed on spring seat, and the bottom of a plurality of moment springs top is fixed with the bottom of connecting structure. The utility model can realize the adjustment of camera lens installation direction and the light transmittance, and effectively improves the accuracy and work efficiency of visual algorithm.

Description

Technical Field

[0001] This utility model relates to the field of industrial camera technology, and in particular to an adjustable coaxial camera lens fixing structure. Background Technology

[0002] Industrial camera vision technology has become a core driving force for the laser industry to move towards intelligence and high precision, and its importance and necessity are self-evident. Currently, the lenses used in industrial cameras are generally fixed by connecting the lens's internal threads to the structural threads, or by using set screws around the lens clamp to hold the lens against the outer wall. Once the lens is fixed, the clamp is directly bolted to the relevant mechanism, making it impossible to adjust the lens sampling angle. Conventional lens mounting assemblies include filters installed according to sampling requirements, but these filters cannot be adjusted in real time according to operating conditions; they must be removed, replaced, and reassembled.

[0003] Current camera lens mounting methods typically involve either a threaded connection on the lens itself or set screws around the lens mount. When using an internal threaded connection, repeated connections can easily cause thread stripping. Furthermore, fixing the lens by rotating the thread cannot guarantee the camera's sampling angle. If the lens is accidentally impacted, deforming the threaded surface, the threaded connection will no longer function properly. When using a clamping mount with set screws for locking, the lens may experience slight displacement or rotation under external vibration, impact, or prolonged use due to its own weight. Additionally, the set screws, when tightening against the lens's outer wall, may apply uneven force to the lens barrel, making repeated disassembly and reassembly difficult. To ensure its accurate return to its original position and angle; after the camera lens is fixed, assembly problems or various tolerances of structural components may cause the camera lens to deflect or tilt, not perpendicular to the observation plane, limiting the camera's sampling range. However, because the camera lens installation method cannot be adjusted, the sampling effect deteriorates, affecting the algorithm's calculation results. The attenuator equipped in the lens mounting assembly cannot be changed in real time according to the power level. For example, the same filter may result in a brighter sample under high power conditions and a darker sample under low power conditions. Both of these situations will lead to image deviation and affect subsequent analysis.

[0004] To address this, an adjustable coaxial camera lens fixing structure is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable coaxial camera lens fixing structure, which aims to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides an adjustable coaxial camera lens fixing structure, comprising:

[0007] Lens holder, the camera lens is locked onto the lens holder by screws;

[0008] A dual-layer polarizing filter mechanism includes a fixed polarizing filter assembly and a movable polarizing filter assembly. The fixed polarizing filter assembly is installed at the bottom of a lens holder. The movable polarizing filter assembly includes a slide rod, a lens mounting base, and a lens fixing part. The lens mounting base is installed at the bottom of the fixed polarizing filter assembly, and a connecting structure is installed at the bottom of the lens mounting base. The lens fixing part is rotatably connected to the lens mounting base, and a movable polarizing filter is installed on the lens fixing part. A slot is formed in the side wall of the lens mounting base. One end of the slide rod is fixed to the lens fixing part, and the other end extends out of the lens mounting base along the slot.

[0009] A spring seat is provided, which is engaged with the hole shaft of the connecting structure. A plurality of torque springs are installed on the spring seat, and the tops of the plurality of torque springs are fixedly connected to the bottom of the connecting structure. A plurality of bolts are installed between the spring seat and the connecting structure, and the plurality of bolts are respectively located inside the plurality of torque springs.

[0010] A reflector mechanism, one end of which is fixedly connected to the spring seat, and the other end is equipped with an adapter plate;

[0011] The lens holder, the fixed polarizing filter assembly, the lens mounting base, the lens mounting seat, the spring seat, and the mirror mechanism are all coaxially arranged.

[0012] According to the adjustable coaxial camera lens fixing structure provided by this utility model, the connecting structure includes:

[0013] The adjusting block adopts a sleeve structure, and the spring seat is engaged with the hole shaft of the adjusting block; the bottom of the adjusting block has several reserved holes, and several bolts are installed on the top of the adjusting block, with the bolts passing through the reserved holes respectively; the top of the torque spring is fixedly connected to the bottom surface of the adjusting block.

[0014] A transition block is installed on top of the adjustment block. The bottom of the transition block has several clearance slots, and each clearance slot corresponds to a bolt. There is a gap between the top of the bolt and the wall of the clearance slot.

[0015] The bottom of the lens mounting base is fixedly connected to the top surface of the adapter block.

[0016] According to the adjustable coaxial camera lens fixing structure provided by this utility model, the lens fixing part includes:

[0017] A first lens holder is provided with a first lens mounting groove, and the movable polarizer is installed in the first lens mounting groove; one end of the slide rod is fixedly connected to the outer wall of the first lens holder.

[0018] A first locking ring is installed inside the first lens holder and is used to fix the movable polarizer.

[0019] A rotating block is rotatably connected within the lens mounting base, and the bottom of the rotating block is threadedly connected to the first lens fixing base.

[0020] According to the adjustable coaxial camera lens fixing structure provided by this utility model, the fixed polarizing filter assembly includes:

[0021] The second lens holder is installed at the bottom of the lens clamp, and the bottom of the second lens holder is coaxially fixed to the top surface of the lens mounting base.

[0022] The second lens mounting slot is formed on the second lens fixing seat;

[0023] A fixed polarizer is mounted on the second lens mounting slot;

[0024] The second locking ring is installed inside the second lens holder and is used to fix the fixed polarizer.

[0025] According to the adjustable coaxial camera lens fixing structure provided by this utility model, the mirror mechanism includes:

[0026] The fixed base body has one end fixedly connected to the adapter plate and the other end fixedly connected to the bottom surface of the spring seat; the bottom surface of the fixed base body is provided with an inclined surface, and the angle between the inclined surface and the bottom surface of the fixed base body is 45°.

[0027] A mirror fixing block is mounted on the inclined surface by connecting bolts, and the mirror fixing block is provided with a lens groove;

[0028] A reflector body is installed in the lens slot, and the angle between the reflector body and the bottom surface of the mounting base body is 45°.

[0029] A sealing block is mounted on the inclined surface by connecting bolts. The sealing block covers the outside of the reflector fixing block, and there is a gap between the inner wall of the sealing block and the outer wall of the reflector fixing block.

[0030] According to the adjustable coaxial camera lens fixing structure provided by this utility model, the adapter plate is provided with a plurality of positioning pin holes, and the fixing base body is coaxially fixed to the adapter plate through positioning pins.

[0031] According to the adjustable coaxial camera lens fixing structure provided by this utility model, the number of bolts is four, and the top surface of the spring seat has four circular grooves at the four corners. The four bolts are respectively installed in the four circular grooves, and the bolts are external hexagonal bolts.

[0032] The present invention discloses the following technical effects:

[0033] In this invention, the camera lens is locked to the lens holder with screws, and the camera lens is locked as a whole, eliminating the possibility of uneven force causing scratches or damage to the lens. A spring seat and several torque springs are provided, and the compression of the torque springs is controlled by adjusting the matching bolts, allowing the camera lens to be adjusted in various directions, ensuring the field of view of the camera lens, providing accurate samples for subsequent vision algorithms, and effectively improving the accuracy of the vision algorithms.

[0034] This invention employs a double-layer polarizer mechanism, with a fixed polarizer assembly and a movable polarizer assembly, one stationary and one movable. By adjusting the amount of light transmitted in a specific direction of polarization (the smaller the angle, the more light is transmitted and the weaker the filtering effect; the larger the angle, the less light is transmitted and the stronger the filtering effect), and by moving a slider, the rotation angle of the movable polarizer is controlled, thereby controlling the amount of light transmitted. It can adapt to various working conditions without disassembly, effectively improving work efficiency, while avoiding the problem of contaminating the cavity lens due to repeated disassembly. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is the front view of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of this utility model.

[0038] The components are as follows: 1. Adapter plate; 2. Mounting base body; 3. Reflector body; 4. Reflector fixing block; 5. Sealing block; 6. Spring seat; 7. Torque spring; 8. Adjusting block; 9. Bolt; 10. Adapter block; 11. Slide rod; 12. Lens mounting base; 13. Movable polarizer; 14. First locking ring; 15. First lens fixing base; 16. Rotating block; 17. Second lens fixing base; 18. Fixed polarizer; 19. Second locking ring; 20. Lens clamp; 21. Camera lens. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0040] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Reference Figures 1-2 This utility model provides an adjustable coaxial camera lens fixing structure, comprising:

[0042] The camera lens 21 is secured to the lens holder 20 by screws.

[0043] The double-layer polarizing filter mechanism includes a fixed polarizing filter assembly and a movable polarizing filter assembly. The fixed polarizing filter assembly is installed at the bottom of the lens holder 20. The movable polarizing filter assembly includes a slide rod 11, a lens mounting base 12, and a lens fixing part. The lens mounting base 12 is installed at the bottom of the fixed polarizing filter assembly. A connecting structure is installed at the bottom of the lens mounting base 12. The lens fixing part is rotatably connected to the lens mounting base 12. A movable polarizing filter 13 is installed on the lens fixing part. A slot is opened on the side wall of the lens mounting base 12. One end of the slide rod 11 is fixed to the lens fixing part, and the other end extends out of the lens mounting base 12 along the slot.

[0044] Spring seat 6, which is engaged with the hole shaft of the connecting structure; several torque springs 7 are installed on spring seat 6, and the top of several torque springs 7 is fixed to the bottom of the connecting structure; several bolts 9 are installed between spring seat 6 and the connecting structure, and the several bolts 9 are respectively located inside several torque springs 7.

[0045] The reflector mechanism is fixed at one end to the spring seat 6 and the other end is equipped with an adapter plate 1.

[0046] Among them, the lens holder 20, the fixed polarizing filter assembly, the lens mount 12, the spring seat 6, and the mirror mechanism are all coaxially arranged;

[0047] With this configuration, the camera lens 21 is locked to the lens holder 20 by screws, and the camera lens 21 is locked as a whole, eliminating the possibility of uneven force causing scratches or damage to the lens. A spring seat 6 and several torque springs 7 are provided, and the compression of the torque springs 7 is controlled by adjusting the matching bolts 9, allowing the camera lens 21 to be adjusted in various directions, ensuring the field of view of the camera lens 21, providing accurate samples for subsequent vision algorithms, and effectively improving the accuracy of the vision algorithms.

[0048] This invention employs a double-layer polarizer mechanism, with a fixed polarizer assembly and a movable polarizer assembly, one stationary and one movable. By adjusting the amount of light transmitted in a specific direction of polarization (the smaller the angle, the more light is transmitted and the weaker the filtering effect; the larger the angle, the less light is transmitted and the stronger the filtering effect), and by moving the slider 11, the rotation angle of the movable polarizer 13 is controlled, thereby controlling the amount of light transmitted. It can adapt to various working conditions without disassembly, effectively improving work efficiency, while avoiding the problem of contaminating the cavity lens due to repeated disassembly.

[0049] Further optimization of the scheme, the connection structure includes:

[0050] Adjusting block 8 adopts a sleeve structure, and spring seat 6 is engaged with the hole shaft of adjusting block 8; several reserved holes are opened at the bottom of adjusting block 8, and several bolts 9 are installed on the top of adjusting block 8. Several bolts 9 pass through several reserved holes respectively, and the top of torque spring 7 is fixedly connected to the bottom surface of adjusting block 8.

[0051] The adapter block 10 is installed on the top of the adjusting block 8. The bottom of the adapter block 10 has several clearance slots, and the clearance slots are set one-to-one with several bolts 9. There is a gap between the top of the bolt 9 and the groove wall of the clearance slot.

[0052] The bottom of the lens mounting base 12 is fixedly connected to the top surface of the adapter block 10;

[0053] Adjusting block 8 adopts a sleeve structure and is fitted with spring seat 6 via a hole-shaft connection. This fit ensures a tight connection and a certain degree of coaxiality between the two, providing a stable foundation connection for the entire structure. The pre-drilled hole at the bottom of adjusting block 8 provides a channel for the installation of bolt 9. When the operator tightens bolt 9, bolt 9 passes through the pre-drilled hole and connects with spring seat 6. By changing the screw-in depth of bolt 9, the compression of torque spring 7 can be precisely controlled.

[0054] A gap is left between the top of bolt 9 and the wall of the clearance groove to ensure that bolt 9 will not interfere with adapter block 10 during adjustment. When adjustment block 8 moves, it will drive adapter block 10, lens mounting base 12 and other connected components to move synchronously, so as to achieve precise adjustment of the angle of camera lens 21.

[0055] The solution has been further optimized, and the lens fixing part includes:

[0056] The first lens holder 15 is provided with a first lens mounting groove, and the movable polarizer 13 is installed in the first lens mounting groove; one end of the slide rod 11 is fixedly connected to the outer wall of the first lens holder 15.

[0057] The first locking ring 14 is installed inside the first lens holder 15 and is used to fix the movable polarizer 13.

[0058] Rotating block 16 is rotatably connected inside lens mounting base 12, and the bottom of rotating block 16 is threadedly connected to first lens fixing base 15.

[0059] The first locking ring 14 is used to firmly fix the movable polarizer 13 in the first lens mounting slot, preventing the movable polarizer 13 from shifting or loosening during use and ensuring its stable optical performance. The slide rod 11 can drive the first lens fixing seat 15 to rotate, thereby changing the angle of the movable polarizer 13 and adjusting the amount of light transmitted.

[0060] Further optimization of the scheme, the fixed polarizer assembly includes:

[0061] The second lens holder 17 is installed at the bottom of the lens clamp 20, and the bottom of the second lens holder 17 is coaxially fixed to the top surface of the lens mounting base 12.

[0062] The second lens mounting slot is formed on the second lens fixing seat 17;

[0063] A fixed polarizer 18 is installed on the second lens mounting slot.

[0064] The second locking ring 19 is installed inside the second lens holder 17 and is used to fix the fixed polarizer 18.

[0065] The coaxial mounting method ensures that light maintains a stable transmission path when passing through the fixed polarizer assembly and the movable polarizer assembly, preventing light deviation from affecting image quality. The second locking ring 19 is used to firmly fix the fixed polarizer 18 in the second lens mounting slot, preventing the fixed polarizer 18 from loosening or falling off during use. The fixed polarizer 18 performs preliminary filtering of the light entering the camera lens 21, providing a basis for further adjustment of the light by the movable polarizer assembly.

[0066] The design has been further optimized, and the reflector mechanism includes:

[0067] The fixed base body 2 has one end fixedly connected to the adapter plate 1 and the other end fixedly connected to the bottom surface of the spring seat 6; the bottom surface of the fixed base body 2 is provided with an inclined surface, and the angle between the inclined surface and the bottom surface of the fixed base body 2 is 45°.

[0068] The reflector fixing block 4 is mounted on the inclined surface by connecting bolts 9, and the reflector fixing block 4 is provided with a lens groove.

[0069] The reflector body is installed in the lens slot, and the angle between the reflector body and the bottom surface of the mounting base 2 is 45°.

[0070] The sealing block 5 is installed on the inclined surface by connecting bolts 9. The sealing block 5 covers the outside of the reflector fixing block 4, and there is a gap between the inner wall of the sealing block 5 and the outer wall of the reflector fixing block 4.

[0071] The coaxial connection ensures the coaxiality and connection stability of the mirror mechanism and the entire lens fixing structure; the 45° inclined surface of the bottom surface of the fixing base body 2 provides a specific angle for the installation of the mirror fixing block 4 and the mirror body. According to the principle of light reflection, when light shines on the mirror body which is at a 45° angle to the bottom surface, the light will be reflected at 90°, thereby changing the propagation path of the light.

[0072] On the one hand, the sealing block 5 protects the reflector fixing block 4 and the reflector body, preventing dust, impurities and other contaminants from entering and affecting the reflector's performance. On the other hand, the gap between the inner wall of the sealing block 5 and the outer wall of the reflector fixing block 4 ensures heat dissipation of the reflector fixing block 4 and avoids friction between the sealing block 5 and the reflector fixing block 4, ensuring that the reflector mechanism can work stably and assisting the camera lens 21 in acquiring image information at a specific angle or position.

[0073] The scheme is further optimized by providing several positioning pin holes on the adapter plate 1, and the fixing base body 2 is coaxially fixed to the adapter plate 1 through positioning pins.

[0074] The scheme is further optimized by using four bolts 9. The top surface of the spring seat 6 has four round grooves at the four corners, and the four bolts 9 are installed in the four round grooves respectively. The bolts 9 are external hexagonal bolts 9.

[0075] The arrangement of the four hex bolts 9 ensures that the torque spring 7 is evenly distributed under force, preventing tilting or instability of the camera lens 21 during adjustment due to uneven force. The hex bolts 9 are easy to tighten using tools such as wrenches; operators can easily adjust the screw depth by rotating the bolts 9, thereby precisely controlling the compression of the torque spring 7. Due to the synergistic effect of the four bolts 9, forces can be applied to the spring seat 6 and its connected components from multiple directions, enabling fine-tuning of the camera lens 21 in various directions and ensuring that the camera lens 21 can be accurately adjusted to the desired field of view.

[0076] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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.

[0077] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An adjustable coaxial camera lens fixing structure, characterized in that, include: The camera lens (21) is secured to the lens holder (20) by screws. A double-layer polarizing filter mechanism, comprising a fixed polarizing filter assembly and a movable polarizing filter assembly, wherein the fixed polarizing filter assembly is installed at the bottom of the lens holder (20), and the movable polarizing filter assembly comprises a slide rod (11), a lens mounting base (12), and a lens fixing part; the lens mounting base (12) is installed at the bottom of the fixed polarizing filter assembly, and a connecting structure is installed at the bottom of the lens mounting base (12), the lens fixing part is rotatably connected inside the lens mounting base (12), a movable polarizing filter (13) is installed on the lens fixing part, and a slot is provided on the side wall of the lens mounting base (12), one end of the slide rod (11) is fixedly connected to the lens fixing part, and the other end extends out of the lens mounting base (12) along the slot; A spring seat (6) is fitted with a hole shaft of the connecting structure; a plurality of torque springs (7) are installed on the spring seat (6), the top of the plurality of torque springs (7) is fixedly connected to the bottom of the connecting structure, and a plurality of bolts (9) are installed between the spring seat (6) and the connecting structure, and the plurality of bolts (9) are respectively located inside the plurality of torque springs (7). A reflector mechanism, one end of which is fixedly connected to the spring seat (6), and the other end is equipped with an adapter plate (1). The lens holder (20), the fixed polarizing filter assembly, the lens mounting base (12), the spring seat (6), and the mirror mechanism are all coaxially arranged.

2. The adjustable coaxial camera lens fixture of claim 1, wherein: The connection structure includes: Adjusting block (8), the adjusting block (8) adopts a sleeve structure, the spring seat (6) is engaged with the hole shaft of the adjusting block (8); the bottom of the adjusting block (8) is provided with several reserved holes, several bolts (9) are installed on the top of the adjusting block (8), several bolts (9) respectively pass through several reserved holes, and the top of the torque spring (7) is fixedly connected to the bottom surface of the adjusting block (8); The adapter block (10) is installed on the top of the adjustment block (8). The bottom of the adapter block (10) is provided with a plurality of clearance slots, and the plurality of clearance slots are provided in correspondence with a plurality of bolts (9). There is a gap between the top of the bolt (9) and the groove wall of the clearance slot. The bottom of the lens mounting base (12) is fixedly connected to the top surface of the adapter block (10).

3. The adjustable coaxial camera lens fixture of claim 1, wherein: The lens fixing part includes: The first lens holder (15) is provided with a first lens mounting groove, and the movable polarizer (13) is installed in the first lens mounting groove; one end of the slide rod (11) is fixedly connected to the outer wall of the first lens holder (15). The first locking ring (14) is installed in the first lens holder (15) and is used to fix the movable polarizer (13). Rotating block (16) is rotatably connected inside the lens mounting base (12), and the bottom of the rotating block (16) is threadedly connected to the first lens fixing base (15).

4. The adjustable coaxial camera lens fixture of claim 1, wherein: The fixed polarizing mirror assembly includes: The second lens holder (17) is installed at the bottom of the lens clamp (20), and the bottom of the second lens holder (17) is coaxially fixed to the top surface of the lens mounting base (12). The second lens mounting slot is formed on the second lens fixing seat (17); A fixed polarizer (18) is installed on the second lens mounting slot; The second locking ring (19) is installed inside the second lens holder (17) and is used to fix the fixed polarizer (18).

5. The adjustable coaxial camera lens fixture of claim 1, wherein: The reflector mechanism includes: The fixed base body (2) has one end fixedly connected to the adapter plate (1) and the other end fixedly connected to the bottom surface of the spring seat (6); the bottom surface of the fixed base body (2) is provided with an inclined surface, and the angle between the inclined surface and the bottom surface of the fixed base body (2) is 45°. A mirror fixing block (4) is mounted on the inclined surface by connecting bolts (9), and a lens groove is provided on the mirror fixing block (4); The reflector body is installed in the lens slot, and the angle between the reflector body and the bottom surface of the fixing base body (2) is 45°. A sealing block (5) is installed on the inclined surface by connecting bolts (9). The sealing block (5) covers the outside of the reflector fixing block (4), and there is a gap between the inner wall of the sealing block (5) and the outer wall of the reflector fixing block (4).

6. The adjustable coaxial camera lens fixture of claim 5, wherein: The adapter plate (1) is provided with several positioning pin holes, and the fixed base body (2) is coaxially fixed to the adapter plate (1) through positioning pins.

7. The adjustable coaxial camera lens fixture of claim 1, wherein: The number of bolts (9) is four. The top surface of the spring seat (6) has four round grooves at the four corners. The four bolts (9) are installed in the four round grooves respectively. The bolts (9) are external hexagonal bolts (9).

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