Adjustable lens and camera interface
By designing an adjustable lens interface with the camera, using threaded structure and fasteners to achieve precise adjustment and double locking of the lens, the problem of lens position deviation in the prior art is solved, and the imaging quality and equipment stability are improved.
Patent Information
- Application Number
- CN202420706668.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-08
AI Technical Summary
The lens and camera interface of existing industrial cameras cannot guarantee a standard distance of 17.526mm, causing the lens’s optimal imaging working distance to deviate from the theoretical working distance, affecting the lens’ imaging quality.
An adjustable lens interface with the camera is designed, including a lens barrel, adjustment ring and locking ring, which enables precise adjustment and double locking of the lens through threaded structure and fasteners to ensure the stable position of the lens on the interface.
Through the double locking mechanism of rotating the adjustment ring and the locking ring, precise adjustment of the lens position is achieved, shooting stability and image quality are improved, maintenance and repair processes are simplified, and the service life of the equipment is extended.
Smart Images
Figure CN222189673U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of camera lenses, and more specifically to an adjustable lens and camera interface. Background Art
[0002] The standard C-mount of industrial lenses refers to the standard distance from the contact surface between the camera and the lens to the image plane of the lens, and its standard value is 17.526mm. However, there are many companies producing industrial cameras in China, and the standard distance of 17.526mm cannot be guaranteed due to reasons such as the camera quality accuracy not meeting the standard and the camera contact surface being worn, which leads to the deviation between the best imaging working distance of the lens and the theoretical working distance. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide an adjustable lens and camera interface in view of the above-mentioned defects of the prior art.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] An adjustable lens and camera interface is constructed, comprising a lens barrel, an adjustment ring and a locking ring, wherein the lens barrel is installed in the adjustment ring, one end of the adjustment ring is provided with an external thread for screwing with the camera interface, and the other end is formed with a flange, the inner side of the locking ring is provided with an internal thread screwed with the external thread, a first screw hole is transversely penetrated on the flange, a fastener is threadedly connected to the first screw hole, and the lower end of the fastener abuts against the locking ring.
[0006] The fastener is a first bolt, and the lower end of the first bolt abuts against the locking ring.
[0007] The flange is evenly distributed with three or more second screw holes that penetrate longitudinally, the second screw holes are threadedly connected with second bolts, and the lower ends of the second bolts abut against the lens barrel.
[0008] The fasteners and the corresponding first screw holes are both provided in plurality and are evenly distributed on the flange.
[0009] The fastener includes a third bolt, a blind hole sleeve abutting against the lower end of the third bolt, a spring arranged in the blind hole sleeve, and a ball body abutting against the lower end of the spring, the opening of the blind hole sleeve is located at an end away from the third bolt, the ball body includes a slider abutting against the spring, and a ball rotatably installed at the lower end of the slider, and the lower end of the ball abuts against the locking ring.
[0010] The locking ring is formed with an annular groove for facilitating the rolling of the balls.
[0011] The utility model also provides a camera interface, which is used for screwing the adjustable lens as described above.
[0012] The beneficial effect of the utility model is that the lens is fixed on the adjustment ring, and the lower end of the fastener is separated from the locking ring by rotating the fastener. At this time, the locking ring can be moved, and the locking ring can be rotated to achieve the movement of the locking ring, so that the camera interface is disconnected from the locking ring. At this time, the adjustment ring can be rotated, and the lens barrel can be moved forward and backward to a suitable position under the action of the threaded structure. At this time, the position of the lens barrel needs to be fixed, so the locking ring is rotated in the opposite direction until the camera interface and the locking ring are against each other, and the lower end of the fastener is against the locking ring by rotating the fastener, so as to fix the lens barrel. By connecting the lens and the camera interface in a threaded manner, the user can finely adjust the position of the lens by rotating the adjustment ring, and achieve accurate adjustment of the lens's face position, and double locking is performed after the adjustment is completed, the first locking is to lock the position of the adjustment ring by the locking ring, and the second locking is to lock the position of the locking ring by the fastener. This structure provides higher stability than the traditional interface. Reduce the accidental change of the lens position due to vibration or when moving the camera, thereby improving the shooting stability and image quality. The utility model has double locking, and has higher stability than other complex mechanism designs. If maintenance or adjustment of the lens and camera interface is required, this design is relatively simple to disassemble and assemble. Users or maintenance personnel can easily access various parts for cleaning, lubrication or replacement, thus extending the life of the equipment and maintaining its optimal performance.
[0013] At the same time, another adjustment method can also be used. By calculating the distance the lens needs to move, the locking ring is adjusted to the appropriate position, and then the locking ring is tightened by the first bolt. At this time, the adjustment ring is rotated to make the camera interface and the adjustment ring collide with each other to lock. This can ensure that when the operator rotates the locking ring to lock it, the lens barrel will not rotate with it due to the synchronization of the thread direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:
[0015] Figure 1 It is a cross-sectional view of an adjustable lens of a preferred embodiment of the utility model;
[0016] Figure 2 It is a cross-sectional view of an adjustable lens according to another preferred embodiment of the utility model. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.
[0018] The adjustable lens of the preferred embodiment of the utility model is as follows Figure 1 As shown, see Figure 2 , comprising a lens barrel 1, an adjustment ring 2 and a locking ring 3, wherein the lens barrel 1 is installed in the adjustment ring 2, one end of the adjustment ring 2 is provided with an external thread 21 for screwing with a camera interface, and the other end is formed with a flange 22, the inner side of the locking ring 3 is provided with an internal thread screwed with the external thread 21, a first screw hole 23 is transversely penetrated on the flange 22, a fastener 24 is threadedly connected with the first screw hole 23, and the lower end of the fastener 24 abuts against the locking ring 3. The fastener 24 is a first bolt, and the lower end of the first bolt abuts against the locking ring 3. The lens is fixed on the adjustment ring, and the lower end of the first bolt is disengaged from the locking ring by rotating the first bolt, at which time the locking ring can be moved, and the locking ring can be rotated to achieve the movement of the locking ring, so that the camera interface is disconnected from the locking ring, and the adjustment ring can be rotated at this time, so that the lens barrel can be moved forward and backward to a suitable position under the action of the thread structure, and at this time the lens barrel position needs to be fixed, so the locking ring is rotated in the opposite direction until the camera interface abuts against the locking ring, and the lower end of the first bolt abuts against the locking ring by rotating the first bolt, thereby fixing the lens barrel. By connecting the lens and the camera interface in a threaded manner, the user can finely adjust the position of the lens by rotating the adjustment ring to achieve precise adjustment of the lens's position, and double lock it after the adjustment is completed. The first lock is to lock the position of the adjustment ring through the locking ring, and the second lock is to lock the position of the locking ring through the first bolt. This structure provides higher stability than traditional interfaces. It reduces accidental changes in the lens position due to vibration or moving the camera, thereby improving shooting stability and image quality. If maintenance or adjustment of the lens is required, the disassembly and assembly of this design is relatively simple. Users or maintenance personnel can easily access various components for cleaning, lubrication or replacement, thereby extending the service life of the equipment and maintaining its optimal performance.
[0019] At the same time, another adjustment method can also be used. By calculating the distance the lens needs to move, the locking ring is adjusted to the appropriate position, and then the locking ring is tightened by the first bolt. At this time, the adjustment ring is rotated to make the camera interface and the adjustment ring collide with each other to lock. This can ensure that when the operator rotates the locking ring to lock it, the lens barrel will not rotate with it due to the synchronization of the thread direction.
[0020] like Figure 2As shown, three or more second screw holes 25 are evenly distributed on the flange 22 and penetrate longitudinally. The second screw holes 25 are threadedly connected with second bolts 26, and the lower end of the second bolt 26 abuts against the lens barrel 1. When connecting two or more components, the evenly distributed second bolts can better maintain the close contact of the joint surface, avoid the generation of local looseness or gaps, and thus improve the sealing and strength of the connection. By evenly distributing the second bolts, the stress concentration phenomenon can be effectively reduced and the service life of the structural components can be extended. The even distribution of multiple second bolts helps to improve the bearing capacity of the overall structure, because the load is evenly distributed to multiple points, and the force borne by each second bolt is relatively reduced.
[0021] like Figure 2 As shown, a plurality of fasteners 24 and corresponding first screw holes 23 are provided, and are evenly distributed on the flange 22. Evenly distributed fasteners can disperse force and pressure over a wider area, which helps to improve the stability and durability of the overall structure. If a fastener is damaged or fails, the evenly distributed design allows the load to be temporarily replaced by other fasteners, thereby reducing the urgency of immediate replacement, and maintenance and replacement work are relatively easy to carry out.
[0022] The utility model also provides another embodiment of an adjustable lens, which is similar to the previous embodiment, except that the fastener 24 includes a third bolt 241, a blind hole sleeve 242 abutting against the lower end of the third bolt 241, a spring 243 arranged in the blind hole sleeve 242, and a ball body 244 abutting against the lower end of the spring 243, the opening of the blind hole sleeve 242 is located at an end away from the third bolt 241, the ball body 244 includes a slider 245 abutting against the spring 243, and a ball 246 rotatably installed at the lower end of the slider 245, and the lower end of the ball 246 abuts against the locking ring 3. In this embodiment, the lens is adjusted as follows: by calculating the distance the lens needs to move, the locking ring is adjusted to a suitable position, and then the locking ring is tightened by the third bolt. At this time, the adjusting ring is rotated again to make the camera interface and the adjusting ring abut against each other for locking. Since the spring abuts against the slider when the locking ring is rotated, the slider can move in the blind hole sleeve, so the ball is always against the locking ring, which can make the locking ring more stable when rotating. At the same time, since the ball can roll, it will not affect the rotation of the locking ring. In specific implementation, the connection between the ball and the slider can have damping to enhance the stability of the rotation of the locking ring. A sufficiently stable locking ring can be precisely adjusted. When the locking ring is adjusted to a suitable position, the blind hole sleeve is pressed down by rotating the third bolt until the lower end of the blind hole sleeve abuts against the locking ring, thereby completing the tightening of the locking ring. At this time, the adjusting ring is rotated again to make the camera interface and the adjusting ring abut against each other for locking. Since the position of the locking ring is fixed first, when the lens position is moved by the adjustment ring, the locking ring will not be displaced due to factors such as vibration. In contrast, the adjustment method in the previous embodiment may generate vibrations during the rotation of the locking ring, affecting the adjustment ring that has been moved to a suitable position. The blind hole sleeve is a sleeve closed at one end. In order to enhance the stability of the blind hole sleeve, a protrusion may be provided on the outside of the blind hole sleeve, and a slide rail for facilitating the sliding of the protrusion may be provided in the first screw hole to prevent the blind hole sleeve from rotating due to the rotation of the third bolt. Multiple fasteners may be provided and evenly distributed to enhance the stability of the locking ring during adjustment.
[0023] By calculating the distance the lens needs to move and then adjusting the locking ring to the appropriate position, the user can control the position of the lens very precisely. The design of the spring against the slider, combined with the interaction of the ball and the locking ring, ensures stability when adjusting the locking ring. The presence of the ball reduces friction, allowing the locking ring to rotate smoothly, and because of its rolling characteristics, it avoids increased resistance to the rotation of the locking ring, and can remain stable even under higher adjustment pressures. The smoothness and control of the adjustment process are further enhanced by introducing damping between the ball and the slider. The damping mechanism can effectively absorb energy caused by rapid movement or vibration, reducing sudden movement or jumping of the locking ring during adjustment, thereby providing a smoother and more precise adjustment experience. After the adjustment is completed, the sleeve is pressed down and against the locking ring by turning the third bolt. This step not only completes the locking, but also provides additional stability due to the close contact and pressure distribution. This locking method ensures that the locking ring position will not change even after long-term use or in harsh environments. Although this design involves multiple components and steps, the overall operation process is intuitive, allowing users to quickly learn how to make precise adjustments and lock.
[0024] The utility model also provides a camera interface, which is used for screwing the adjustable lens as described above.
[0025] It should be understood that the present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.
Claims
1. An adjustable lens, characterized in that: The invention comprises a lens barrel (1), an adjusting ring (2) and a locking ring (3), wherein the lens barrel (1) is installed in the adjusting ring (2), one end of the adjusting ring (2) is provided with an external thread (21) for conveniently being screwed to a camera interface, and the other end is formed with a flange (22), the inner side of the locking ring (3) is provided with an internal thread screwed to the external thread (21), a first screw hole (23) is transversely penetrated on the flange (22), a fastener (24) is threadedly connected to the first screw hole (23), and the lower end of the fastener (24) abuts against the locking ring (3).
2. The adjustable lens according to claim 1, characterized in that: The fastener (24) is a first bolt, and the lower end of the first bolt abuts against the locking ring (3).
3. The adjustable lens according to claim 1, characterized in that: The flange (22) is evenly distributed with three or more second screw holes (25) running longitudinally therethrough. The second screw holes (25) are threadedly connected with second bolts (26), and the lower ends of the second bolts (26) abut against the lens barrel (1).
4. The adjustable lens according to claim 1, characterized in that: The fasteners (24) and the corresponding first screw holes (23) are both provided in plurality and are evenly distributed on the flange (22).
5. The adjustable lens according to claim 1, characterized in that: The fastener (24) includes a third bolt (241), a blind hole sleeve (242) abutting against the lower end of the third bolt (241), a spring (243) arranged in the blind hole sleeve (242), and a ball body (244) abutting against the lower end of the spring (243), the opening of the blind hole sleeve (242) is located at an end away from the third bolt (241), and the ball body (244) includes a slider (245) abutting against the spring (243), and a ball (246) rotatably mounted on the lower end of the slider (245), and the lower end of the ball (246) abuts against the locking ring (3).
6. The adjustable lens according to claim 5, characterized in that: The locking ring (3) is formed with an annular groove for facilitating the rolling of the ball (246).
7. A camera interface, characterized in that: Used for screwing the adjustable lens described in any one of claims 1 to 6.