Optical lens capable of detecting focusing movement position in real time and imaging device
By setting up a movement group, a driving structure, and a detection structure in the lens, real-time position control of the optical lens is achieved, solving the problem of inaccurate driving of existing zoom lenses and improving the accuracy of lens position and working efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UNION OPTECH
- Filing Date
- 2025-04-08
- Publication Date
- 2026-05-05
AI Technical Summary
The existing zoom lens driving method is not precise enough, which causes the lens to fail to accurately reach a specific focal length position after prolonged use.
Design an optical lens capable of real-time detection of focusing movement position. By setting a movement group, a driving structure, and a detection structure in the lens barrel, including a sensing sensor assembly and a trigger, the real-time position recording and control of the movement group can be achieved.
It improves the driving precision and working efficiency of the lens position, ensuring that the lens can accurately reach a specific focal length, thus enhancing the performance of the zoom lens.
Smart Images
Figure CN224203495U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical lens technology, and in particular to an optical lens and imaging device capable of real-time detection of focusing movement position. Background Technology
[0002] Zoom lenses, with their ability to flexibly adjust focal length and quickly adapt to different scenarios, are widely used in security monitoring, consumer electronics, automobiles, medical and other fields.
[0003] Existing zoom lenses typically use voice coil motors or stepper motors to drive zooming. However, due to the lack of precision of existing driving methods, especially after prolonged use, the moving parts cannot accurately reach the position of the specific required focal length. How to design an optical lens that can accurately control the position of the lens is an urgent problem to be solved. Utility Model Content
[0004] The main purpose of this invention is to propose an optical lens and imaging device that can detect the focusing movement position in real time, aiming to solve the problem that current optical lenses cannot accurately control the lens position.
[0005] To achieve the above objectives, this utility model proposes an optical lens capable of real-time detection of focusing movement, comprising:
[0006] The microscope tube has a cavity;
[0007] The movable group is movably installed in the cavity along the length of the lens barrel;
[0008] A driving structure, connected to the mobile group driver, for driving the mobile group activity; and,
[0009] The detection structure includes a sensing sensor assembly and a trigger for triggering the sensing sensor assembly, wherein the trigger is disposed in the moving group and the sensing sensor assembly is correspondingly disposed in the lens barrel, so that the sensing sensor assembly records the relative movement position of the trigger during the movement of the moving group.
[0010] In one embodiment, the driving structure includes:
[0011] A focusing ring, sleeved on the outside of the lens barrel and tractively connected to the movable group, so as to drive the movable group to move along the length direction of the lens barrel when the focusing ring rotates; and,
[0012] A driving component is connected to the focusing ring and is used to drive the focusing ring to rotate.
[0013] In one embodiment, a guide rod extending radially along the lens barrel is provided on the movable group, the guide rod extending out of the lens barrel;
[0014] The focusing ring is provided with a first guide groove, the length direction of the first guide groove is set at an angle to the optical axis direction, and the side wall of the first guide groove in the width direction abuts against the periphery of the guide rod.
[0015] In one embodiment, the lens barrel is provided with a second guide groove corresponding to the guide rod, the second guide groove extending along the optical axis direction to guide the guide rod to move along the optical axis direction.
[0016] In one embodiment, the dimension of the first guide groove in the optical axis direction is smaller than the dimension of the second guide groove in the optical axis direction.
[0017] In one embodiment, buffer portions are provided on both sides of the first guide groove along its length.
[0018] In one embodiment, a first gear is provided on the focusing ring;
[0019] The driving component includes:
[0020] The second gear meshes with the first gear;
[0021] A stepper motor, used to drive the second gear to rotate; and,
[0022] A mounting bracket is located outside the lens barrel for mounting the stepper motor.
[0023] In one embodiment, the mounting bracket covers the first gear to limit the rotation range of the first gear.
[0024] In one embodiment, the sensing sensor assembly includes a PCB circuit board with a TMR chip soldered on it, the trigger includes a sensing magnet, and the PCB circuit board with the TMR chip soldered on it is capable of detecting the relative position of the sensing magnet in real time.
[0025] This utility model also proposes an imaging device, including the aforementioned optical lens capable of real-time detection of focusing movement position, wherein the optical lens capable of real-time detection of focusing movement position includes:
[0026] The microscope tube has a cavity;
[0027] The movable group is movably installed in the cavity along the length of the lens barrel;
[0028] A driving structure, connected to the mobile group driver, for driving the mobile group activity; and,
[0029] The detection structure includes a sensing sensor assembly and a trigger for triggering the sensing sensor assembly, wherein the trigger is disposed in the moving group and the sensing sensor assembly is correspondingly disposed in the lens barrel, so that the sensing sensor assembly records the relative movement position of the trigger during the movement of the moving group.
[0030] The technical solution provided by this utility model achieves optical lens zoom by movably arranging the moving group within the lens barrel. By setting the driving structure, control of the moving group is achieved. Furthermore, by setting the detection structure, including a sensing sensor assembly and a trigger for triggering the sensing sensor assembly, wherein the trigger is located within the moving group and the sensing sensor assembly is correspondingly located within the lens barrel, the sensing sensor assembly records the relative movement position of the trigger during the movement of the moving group. This achieves real-time position control of the optical lens, improves the positional accuracy of the driving structure after driving the moving group, and thus improves work efficiency. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.
[0032] Figure 1 A schematic diagram of the structure of an embodiment of the optical lens capable of real-time detection of focusing movement provided by this utility model;
[0033] Figure 2 for Figure 1 A schematic diagram of a localized explosion from a single angle of view using an optical lens capable of real-time detection of focusing movement.
[0034] Figure 3 for Figure 1 A schematic diagram of a localized explosion from another perspective, showing an optical lens capable of real-time detection of focusing movement.
[0035] Figure 4 for Figure 1 A schematic diagram of the structure of the central lens barrel and focusing ring from one angle.
[0036] Explanation of icon numbers:
[0037] 100. Optical lens capable of real-time detection of focusing movement position; 1. Lens barrel; 11. Lens body; 111. Second guide groove; 12. Mounting base; 2. Moving group; 21. Guide rod; 3. Drive structure; 31. Focusing ring; 311. First guide groove; 312. First gear; 32. Drive component; 321. Second gear; 322. Stepper motor; 323. Mounting bracket; 4. Detection structure; 41. Sensing sensor assembly; 411. PCB circuit board with TMR chip soldered on; 42. Trigger; 421. Sensing magnet.
[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. 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 scope of protection of the present utility model.
[0040] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0042] Zoom lenses, with their ability to flexibly adjust focal length and quickly adapt to different scenarios, are widely used in security monitoring, consumer electronics, automobiles, medical and other fields.
[0043] Existing zoom lenses typically use voice coil motors or stepper motors to drive zooming. However, due to the lack of precision of existing driving methods, especially after prolonged use, the moving parts cannot accurately reach the position of the specific required focal length. How to design an optical lens that can accurately control the position of the lens is an urgent problem to be solved.
[0044] The main purpose of this invention is to propose an optical lens and imaging device that can detect the focusing movement position in real time, aiming to solve the problem that current optical lenses cannot accurately control the lens position.
[0045] Please see Figure 1 To achieve the above objectives, this utility model proposes an optical lens 100 capable of real-time detection of focusing movement position, comprising a lens barrel 1, a moving group 2, a driving structure 3, and a detection structure 4. The lens barrel 1 has a cavity; the moving group 2 is movably installed in the cavity along the length direction of the lens barrel 1; the driving structure 3 is drivenly connected to the moving group 2 to drive the moving group 2 to move; the detection structure 4 includes a sensing sensor assembly 41 and a trigger body 42 for triggering the sensing sensor assembly 41, wherein the trigger body 42 is disposed in the moving group 2, and the sensing sensor assembly 41 is correspondingly disposed in the lens barrel 1, so that during the movement of the moving group 2, the sensing sensor assembly 41 records the relative movement position of the trigger body 42.
[0046] The technical solution provided by this utility model achieves optical lens zoom by movably arranging the moving group 2 within the lens barrel 1. By setting the driving structure 3, control of the moving group 2 is achieved. Furthermore, by setting the detection structure 4, including a sensing sensor assembly 41 and a trigger body 42 for triggering the sensing sensor assembly 41, wherein the trigger body 42 is located within the moving group 2 and the sensing sensor assembly 41 is correspondingly located within the lens barrel 1, the sensing sensor assembly 41 records the relative movement position of the trigger body 42 during the movement of the moving group 2. This achieves real-time position control of the optical lens, improves the positional accuracy of the driving structure 3 after driving the moving group 2, and thus improves work efficiency.
[0047] It is worth mentioning that, in one embodiment provided by this utility model, the lens barrel 1 includes a mounting base 12 and a barrel body 11 disposed on the mounting base 12, and the driving structure 3 is disposed on the mounting base 12, thereby facilitating driving connection with the moving group 2.
[0048] It should be noted that this solution does not limit the specific implementation of the driving structure 3. In a preferred embodiment of this solution, the driving structure 3 includes a focusing ring 31 and a driving member 32. The focusing ring 31 is sleeved on the outside of the lens barrel 1 and is connected to the moving group 2 for transmission, so that when the focusing ring 31 rotates, it drives the moving group 2 to move along the length direction of the lens barrel 1. The driving member 32 is driven by the focusing ring 31 to drive the focusing ring 31 to rotate. With this configuration, the moving group 2 is driven by rotating the focusing ring 31 sleeved on the outside of the lens. The overall structure is relatively compact and easy to assemble.
[0049] In another embodiment of this utility model, the driving structure 3 is configured as a voice coil motor, which is located inside the lens barrel 1 to directly drive the movement of the moving group 2. This configuration greatly reduces the volume occupied by the overall structure.
[0050] Further, please refer to Figure 4 The movable group 2 is provided with a guide rod 21 extending radially along the lens barrel 1, the guide rod 21 protruding from the lens barrel 1; the focusing ring 31 is provided with a first guide groove 311, the length direction of the first guide groove 311 is set at an angle to the optical axis direction, and the sidewall of the first guide groove 311 in the width direction abuts against the circumference of the guide rod 21. With this configuration, the focusing ring 31 can control the movable group 2 solely through mechanical transmission, resulting in a simple structure, convenient operation, and easy assembly with other components, thus reducing the manufacturing cost of this structure.
[0051] Furthermore, the lens barrel 1 is provided with a second guide groove 111 corresponding to the guide rod 21. The second guide groove 111 extends along the optical axis to guide the guide rod 21 to move along the optical axis. This configuration restricts the movement direction of the guide rod 21, thereby limiting the movement direction of the moving group 2, ensuring the accuracy of the forward and backward movement of the optical lens, preventing the lens from rotating around the optical axis, and also ensuring the normal operation of the sensing sensor assembly 41.
[0052] To prevent interference between the guide rod 21 and the second guide groove 111, in one embodiment of this invention, the dimension of the first guide groove 311 in the optical axis direction is smaller than the dimension of the second guide groove 111 in the optical axis direction. With this design, when the guide rod 21 is at its extreme position in the first guide groove 311, there is still a certain distance between the guide rod 21 and its extreme position in the second guide groove 111, thereby effectively preventing the guide rod 21 from getting stuck.
[0053] Furthermore, buffer portions are provided on both sides of the first guide groove 311 along its length. By providing these buffer portions, the wear and tear caused when the guide rod 21 accidentally collides with the first guide groove 311 is reduced. Simultaneously, it also serves to warn the operator in advance that the device is about to enter its extreme focusing position. It is worth noting that this invention does not limit the specific implementation of the buffer portions. For example, the buffer portions can be made of elastic materials such as springs or foam, or even repulsive magnets respectively mounted on the guide rod 21 and the first guide groove 311.
[0054] In one embodiment of this utility model, please refer to Figure 3 The focusing ring 31 is provided with a first gear 312; the driving component 32 includes a second gear 321, a stepper motor 322, and a mounting bracket 323. The second gear 321 meshes with the first gear 312; the stepper motor 322 drives the second gear 321 to rotate; the mounting bracket 323 is located outside the lens barrel 1 for mounting the stepper motor 322. This configuration results in a more stable structure, facilitates assembly, and simplifies the design, thus reducing the manufacturing cost of the device.
[0055] Furthermore, the mounting bracket 323 is fitted over the first gear 312 to limit the rotation range of the first gear 312. By fitting the mounting bracket 323 over the first gear 312, the rotation range of the first gear 312 is limited, thereby preventing the first gear 312 from rotating too much and causing interference between the guide rod 21 and the first guide groove 311.
[0056] In one embodiment of this utility model, please refer to Figure 2 The sensing sensor assembly 41 includes a PCB circuit board 411 with a TMR chip soldered on it, and the trigger 42 includes a sensing magnet 421. The PCB circuit board 411 with the TMR chip soldered on it can detect the relative position of the sensing magnet 421 in real time. The TMR chip refers to a tunnel magnetoresistive chip, which has high sensitivity and stability and can detect weak magnetic field changes; it is often used in displacement sensors. By using a PCB circuit board 411 with a TMR chip soldered on it, the overall structure's volume can be reduced, and more accurate data can be obtained, thereby improving the accuracy of position acquisition.
[0057] This utility model also proposes an imaging device, which includes the aforementioned optical lens 100 capable of real-time detection of focusing movement position. Since the imaging device includes the optical lens 100 capable of real-time detection of focusing movement position, the specific structure of the optical lens 100 capable of real-time detection of focusing movement position is as described in the above embodiments. Because the optical lens 100 capable of real-time detection of focusing movement position of this imaging device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0058] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. An optical lens capable of real-time detection of focusing movement position, characterized in that, include: The microscope tube has a cavity; The movable group is movably installed in the cavity along the length of the lens barrel; A driving structure, connected to the mobile group driver, is used to drive the activity of the mobile group; as well as, The detection structure includes a sensing sensor assembly and a trigger for triggering the sensing sensor assembly, wherein the trigger is disposed in the moving group and the sensing sensor assembly is correspondingly disposed in the lens barrel, so that the sensing sensor assembly records the relative movement position of the trigger during the movement of the moving group; The driving structure includes: A focusing ring, sleeved on the outside of the lens barrel and tractively connected to the movable group, so as to drive the movable group to move along the length direction of the lens barrel when the focusing ring rotates; and, A driving component is connected to the focusing ring and is used to drive the focusing ring to rotate.
2. The optical lens capable of real-time detection of focusing movement position as described in claim 1, characterized in that, The movable group is provided with a guide rod extending radially along the lens barrel, the guide rod extending out of the lens barrel; The focusing ring is provided with a first guide groove, the length direction of the first guide groove is set at an angle to the optical axis direction of the moving group, and the side wall of the first guide groove in the width direction abuts against the periphery of the guide rod.
3. The optical lens capable of real-time detection of focusing movement position as described in claim 2, characterized in that, The lens barrel is provided with a second guide groove corresponding to the guide rod. The second guide groove extends along the optical axis to guide the guide rod to move along the optical axis.
4. The optical lens capable of real-time detection of focusing movement position as described in claim 3, characterized in that, The dimension of the first guide groove in the optical axis direction is smaller than the dimension of the second guide groove in the optical axis direction.
5. The optical lens capable of real-time detection of focusing movement position as described in claim 3, characterized in that, The first guide groove has buffer sections on both sides along its length.
6. The optical lens capable of real-time detection of focusing movement position as described in claim 1, characterized in that, The focusing ring is provided with a first gear; The driving component includes: The second gear meshes with the first gear; A stepper motor, used to drive the second gear to rotate; and, A mounting bracket is located outside the lens barrel for mounting the stepper motor.
7. The optical lens capable of real-time detection of focusing movement position as described in claim 6, characterized in that, The mounting bracket is placed over the first gear to limit the rotation range of the first gear.
8. The optical lens capable of real-time detection of focusing movement position as described in claim 1, characterized in that, The sensing sensor assembly includes a PCB circuit board with a TMR chip soldered on it, and the trigger includes a sensing magnet. The PCB circuit board with the TMR chip soldered on it can detect the relative position of the sensing magnet in real time.
9. An imaging device, characterized in that, Including an optical lens capable of real-time detection of focusing movement position as described in any one of claims 1 to 8.