Camera adjustment device
Patent Information
- Application Number
- CN202522619301.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-12-10
AI Technical Summary
各调节自由度间相互独立，消除了调节过程中各轴向的串扰问题。
Smart Images
Figure CN224872203U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transmission adjustment technology, and in particular to a camera adjustment device. Background Technology
[0002] In the optical systems of inspection equipment, cameras are frequently used for image capture or scanning. During system setup, it is often necessary to adjust the camera's eccentricity, rotation, and focus. The accuracy of the camera's position adjustment has a significant impact on the measurement results.
[0003] While meeting the functional requirements of multi-degree-of-freedom adjustment, how to simplify the operation steps and improve the adjustment accuracy in a confined space is a persistent focus in optomechanical design. Utility Model Content
[0004] This application addresses the shortcomings of the existing production technology by providing a camera adjustment device capable of adjustment in the xy plane, z-axis height focusing adjustment, and rotation angle adjustment around the z-axis.
[0005] The technical solution adopted in this utility model is as follows: A camera adjustment device includes an eccentric adjustment plate, with the length direction of the eccentric adjustment plate defined as the x-direction, and the y-direction and z-direction defined. An angle adjustment component and a focus adjustment component are stacked on the z-axis of the eccentric adjustment plate. The eccentric adjustment plate includes: The stator section serves as the adjustment reference, and adjustment space is reserved on the stator section. The moving part is located within the adjustment space of the stator part and makes relative displacement with respect to the stator part in the x and y directions; The angle adjustment component includes: The adjusting seat is fixedly installed on the moving part. The adjusting screw is threaded onto the adjusting seat. The clamp is rotatable, and the adjusting screw drives the adjusting seat to rotate around the z-axis. The focus adjustment component includes: The camera adapter is rotatably connected to the clamp. Adjust the sleeve and screw it onto the top of the clamp to limit the rotation of the camera adapter.
[0006] As a further improvement to the above technical solution: The stator portion of the eccentric adjustment plate has an opening on its thickness sidewall. A preload spring and a spring set screw are placed coaxially inside the opening. A first adjustment screw is also coaxially mounted inside the opening. The first adjustment screw pushes the preload spring to deform and the moving part to displace.
[0007] The eccentric adjustment plate is equipped with a preload spring, a spring set screw, and a first adjustment screw in both the x and y directions for adjusting the displacement of the moving part.
[0008] The adjustment actions of the eccentric adjustment plate in the x and y directions are independent of each other.
[0009] The moving part is formed with a boss, and an adjustment seat is provided on the boss in the yz direction or the xz direction. The first adjustment screw reciprocates axially on the adjustment seat.
[0010] A preload spring and spring set screw are placed coaxially inside the hole. A micrometer is used to apply a thrust in the x or y direction to the preload spring and spring set screw.
[0011] A clamp is rotatably connected to the boss of the moving part, and the clamp is partially protruding. The fine-tuning screw has a ball head formed on it, which clamps the protrusion of the clamping member.
[0012] The ball head on the fine-tuning screw is clearance-fitted with the protrusion of the clamp.
[0013] The focus adjustment component includes: The coarse adjustment screw is used to tighten the clamping parts. The camera adapter is held in place by a clamp; the coarse adjustment screw and the clamp provide circumferential and axial limiting for the camera adapter. The adjusting sleeve is threadedly connected to the clamp, and the adjusting sleeve lifts the camera adapter for adjustment along the z-axis.
[0014] The clamp has a cylindrical body formed on the side facing away from the eccentric adjustment plate in the z-direction, and the camera adapter is inserted into the cylindrical body; the cylindrical body and the adjustment sleeve are screwed together.
[0015] The beneficial effects of this utility model are as follows: Each adjustment degree of freedom is independent of the others, eliminating crosstalk problems in each axis during the adjustment process.
[0016] Each degree of freedom adjustment requires only one screw operation, reducing the workload for operators. It also avoids the risk of accidental operation or mechanical damage that can occur with push-pull or push-pull mechanisms, thus providing foolproof protection.
[0017] High-precision adjustment can be achieved by refining the pitch of the adjusting thread.
[0018] The adjustment mechanism is compact and lightweight, avoiding excessive burden on the load-bearing mechanism. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure assembly of this utility model.
[0020] Figure 2 This is an exploded view of the eccentric adjustment plate of this utility model.
[0021] Figure 3 for Figure 2 Another implementation diagram is shown, in which a micrometer is used instead of the first adjusting screw.
[0022] Figure 4 This is an exploded view of the angle adjustment component of this utility model.
[0023] Figure 5 This is an exploded view of the focus adjustment component of this utility model.
[0024] The components include: 1. Eccentric adjustment plate; 2. Angle adjustment assembly; 3. Focus adjustment assembly; 11. Stator section; 12. Preload spring; 13. Spring set screw; 14. First adjusting screw; 15. Translation mounting screw; 16. Translation locking washer; 17. Eccentric locking screw; 18. Digitizer; 21. Angle locking screw; 22. Adjusting seat; 23. Fine adjustment screw; 24. Clamp; 25. Fine adjustment locking washer; 26. Angle locking screw; 31. Coarse adjustment locking screw; 32. Adjusting sleeve; 33. Camera adapter. Detailed Implementation
[0025] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0026] like Figures 1-5 As shown, the camera adjustment device in this embodiment includes an eccentric adjustment plate 1. The length direction of the eccentric adjustment plate 1 is defined as the x-direction, and the y-direction and z-direction are defined as follows: An angle adjustment component 2 and a focus adjustment component 3 are stacked on the z-axis of the eccentric adjustment plate 1. Eccentric adjustment plate 1 includes: Stator section 11 serves as the adjustment reference, and adjustment space is reserved on stator section 11. The moving part is located within the adjustment space of the stator part 11 and makes relative displacement with respect to the stator part 11 in the x and y directions. Angle adjustment component 2 includes: Adjustment seat 22 is fixedly installed on the moving part. The adjusting screw is threaded onto the adjusting seat 22. The clamp 24 is rotatable, and the adjusting screw pushes the adjusting seat 22 to rotate around the z-axis. The focus adjustment component 3 includes: Camera adapter 33 is rotatably connected to clamp 24. Adjusting sleeve 32, which is screwed and fastened to the top of clamp 24, limits the rotation of camera adapter 33.
[0027] An opening is provided on the thickness side wall of the stator part 11 of the eccentric adjustment plate 1. A preload spring 12 and a spring set screw 13 are placed coaxially in the opening. A first adjustment screw 14 is coaxially assembled in the opening. The first adjustment screw 14 pushes the preload spring 12 to deform and the moving part to displace.
[0028] The eccentric adjustment plate 1 is equipped with a preload spring 12, a spring set screw 13, and a first adjustment screw 14 in both the x and y directions for adjusting the displacement of the moving part.
[0029] The adjustment actions of the eccentric adjustment plate 1 in the x and y directions are independent of each other.
[0030] The moving part is formed with a boss, and an adjustment seat 22 is set on the boss in the yz direction or the xz direction. The first adjustment screw 14 reciprocates axially on the adjustment seat 22.
[0031] A preload spring 12 and a spring set screw 13 are placed coaxially inside the hole. A micrometer 18 is used to apply a thrust in the x or y direction to the preload spring 12 and the spring set screw 13.
[0032] A clamp 24 is rotatably connected to the boss of the moving part, and the clamp 24 is partially protruding. A ball head is formed on the fine-tuning screw 23, and the ball head clamps the protrusion of the clamping member 24.
[0033] The ball head on the fine-tuning screw 23 is clearance-fitted with the protrusion of the clamp 24.
[0034] The focus adjustment component 3 includes: The coarse adjustment screw is used to lock the clamping part 24. The camera adapter 33 is held by the clamp 24; the coarse adjustment screw and the clamp 24 provide circumferential and axial limits for the camera adapter 33. The adjusting sleeve 32 is threadedly connected to the clamp 24, and the adjusting sleeve 32 lifts the camera adapter 33 for adjustment along the z-direction.
[0035] The clamp 24 has a cylindrical body formed on the side facing away from the eccentric adjustment plate 1 in the z direction, and the camera adapter 33 is inserted into the cylindrical body; the cylindrical body and the adjustment sleeve 32 are screwed together.
[0036] The specific structure and working principle of this embodiment are as follows: like Figure 1The diagram shown is an overall structural assembly diagram of this embodiment. An angle adjustment component 2 and a focus adjustment component 3 are provided on the eccentric adjustment plate 1 in the z-direction. The eccentric adjustment plate 1 adjusts the relative position in the horizontal plane and the xy-plane, the angle adjustment component 2 adjusts the camera rotation angle, and the focus adjustment component 3 adjusts the camera's height in the z-direction.
[0037] Among them, the angle adjustment component 2 has two functions: coarse adjustment and fine adjustment.
[0038] like Figure 1 and Figure 2 As shown, the eccentric adjustment plate 1 provides deformation freedom in the X and Y directions. After the preload spring 12 is encapsulated in the hole by the spring set screw 13, the moving part of the eccentric adjustment plate 1 is pushed to one side by the preload, that is, to the negative limit position in the X and Y directions. The moving part is precisely adjusted by tightening the first adjustment screw 14.
[0039] After the relative position in the XY direction is adjusted, use the translation mounting screw 15 to fix the eccentric adjustment plate 1 to the main body of the optical system. After the adjustment is completed, the position is locked by tightening the eccentric locking screw 17.
[0040] The adjustment accuracy can be further improved by shortening the pitch of the first adjusting screw 14. As an alternative implementation, a micrometer 18 can be used to replace the first adjusting screw 14. Figure 3 This is a derivative mechanism using a 18-thousandth head.
[0041] like Figure 4 As shown, the tail of the fine-tuning screw 23 has a fine-pitch adjusting thread, and the head is composed of a smooth cylindrical surface and spherical contact surfaces at both ends. When the fine-tuning screw 23 is screwed in or out, it causes the spherical contact surface on one side to contact the flange of the clamp 24, causing the clamp 24 to rotate around the z-axis by an angle θ.
[0042] The coarse adjustment clamp 24 has a smooth cylindrical boss at the bottom, which forms a shaft hole fit with the round hole at the top of the eccentric adjustment plate 1. When the adjusting flange at the bottom of the clamp 24 is driven by the spherical contact surface of the fine adjustment screw 23, the clamp 24 will rotate around the axis of the shaft hole mechanism.
[0043] There is a gap between the spherical contact surfaces at both ends of the fine-tuning screw 23 and the adjusting flange at the bottom of the clamp 24. After the θ angle is fine-tuned, the fine-tuning screw 23 is rotated back to an appropriate angle to avoid angle drift caused by thermal expansion and contraction.
[0044] After the θ adjustment is completed, the angle can be locked by tightening the angle locking screw 2621.
[0045] like Figure 5As shown, the central circular hole of the clamp 24 has the same diameter as the lower cylindrical surface of the camera adapter 33. After loosening the coarse adjustment locking screw 31, the camera can be rotated freely at a large angle to achieve the θ coarse adjustment of the camera. After the θ coarse adjustment is completed, tighten the coarse adjustment locking screw 31 to fix it.
[0046] The clamp 24 has a fine external thread at its top, and the Z-axis adjusting sleeve 32 has a fine internal thread. After loosening the coarse adjustment locking screw 31, rotating the adjusting sleeve 32 allows for Z-axis adjustment of the camera. After adjustment, tighten the coarse adjustment locking screw 31 to secure it.
[0047] The purpose of this application is to solve common problems with camera adjustment mechanisms on the market, including: There is crosstalk between the various degrees of freedom, and repeated iterations are required when adjusting multiple degrees of freedom.
[0048] Adjusting a single degree of freedom is cumbersome and usually requires a push or pull adjustment mechanism, which requires operating at least two screws for each adjustment.
[0049] It is difficult to balance adjustment stroke and adjustment accuracy. Often, a large adjustment stroke corresponds to a lower adjustment accuracy, or a small adjustment stroke corresponds to a higher adjustment accuracy.
[0050] The adjustment mechanism is bulky. The optical system to which the camera's adjustment mechanism belongs often serves as a load for mechanisms such as the motion stage and support. Excessive bulk places an additional burden on the motion stage and support, often resulting in a significant increase in cost.
[0051] In this application, the adjustment action in each direction is simplified to a simple action that can be achieved with a single screw, and the positional accuracy is precisely adjusted by using a threaded structure. This ensures that there is no crosstalk between the degrees of freedom, while simplifying and reducing the weight of the equipment and simplifying the operation steps, ensuring ease of use, outstanding adjustment effect, and clear focus.
[0052] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.
Claims
1. A camera adjustment device, characterized in that: Includes an eccentric adjustment plate (1), with the length direction of the eccentric adjustment plate (1) as the x-direction, and the y-direction and z-direction defined. An angle adjustment component (2) and a focus adjustment component (3) are stacked on the z-axis of the eccentric adjustment plate (1). The eccentric adjustment plate (1) includes: The stator section (11) serves as an adjustment reference, and adjustment space is reserved on the stator section (11). The moving part is set within the adjustment space of the stator part (11) and makes relative displacement with the stator part (11) in the x and y directions; The angle adjustment component (2) includes: Adjustment seat (22) is fixedly installed on the moving part. The adjusting screw is threaded onto the adjusting seat (22). The clamp (24) is rotatably mounted, and the adjusting screw pushes the adjusting seat (22) to rotate around the z-axis. The focus adjustment component (3) includes: The camera adapter (33) is rotatably connected to the clamp (24). Adjusting sleeve (32) is screwed and fastened to the top of clamp (24) to limit the rotation of camera adapter (33).
2. The camera adjustment device as described in claim 1, characterized in that: The stator part (11) of the eccentric adjustment plate (1) has an opening on its thickness sidewall. A preload spring (12) and a spring set screw (13) are placed coaxially in the opening. A first adjustment screw (14) is coaxially assembled in the opening. The first adjustment screw (14) pushes the preload spring (12) to deform and the moving part to displace.
3. The camera adjustment device as described in claim 2, characterized in that: The eccentric adjustment plate (1) is provided with a preload spring (12), a spring top screw (13), and a first adjustment screw (14) in both the x and y directions for adjusting the displacement of the moving part.
4. The camera adjustment device as described in claim 3, characterized in that: The adjustment actions of the eccentric adjustment plate (1) in the x and y directions are independent of each other.
5. The camera adjustment device as described in claim 1, characterized in that: The moving part is formed with a boss, and an adjustment seat (22) is provided on the boss in the yz direction or the xz direction. The first adjustment screw (14) moves axially back and forth on the adjustment seat (22).
6. The camera adjustment device as described in claim 2, characterized in that: A preload spring (12) and a spring set screw (13) are placed coaxially inside the hole. A micrometer (18) is used to apply a thrust in the x or y direction to the preload spring (12) and the spring set screw (13).
7. The camera adjustment device as described in claim 5, characterized in that: A clamp (24) is rotatably connected to the boss of the moving part, and the clamp (24) is partially protruding. A ball head is formed on the fine-tuning screw (23), and the ball head clamps the protrusion of the clamping part (24).
8. The camera adjustment device as described in claim 7, characterized in that: The ball head on the fine-tuning screw (23) is clearance-fitted with the protrusion of the clamp (24).
9. The camera adjustment device as described in claim 1, characterized in that: The focus adjustment component (3) includes: The coarse adjustment screw is used to lock the clamp (24). The camera adapter (33) is held by the clamp (24); the coarse adjustment screw and the clamp (24) provide circumferential and axial limits for the camera adapter (33). The adjusting sleeve (32) is threadedly connected to the clamp (24), and the adjusting sleeve (32) lifts the camera adapter (33) along the z-direction.
10. The camera adjustment device as described in claim 9, characterized in that: The clamp (24) has a cylindrical body formed on the side facing away from the eccentric adjustment plate (1) in the z direction, and the camera adapter (33) is inserted into the cylindrical body; the cylindrical body is screwed to the adjustment sleeve (32).