Dual-linkage focusing mode lens and camera shooting equipment

Abstract

The utility model provides a dual-linkage focusing mode lens and camera shooting equipment, and relates to the technical field of optical imaging, the dual-linkage focusing mode lens comprises a manual focusing lens group, an automatic focusing lens group, a manual driving assembly, an automatic driving assembly and a position sensing trigger unit, the manual focusing lens group comprises at least one manual lens group, and the automatic focusing lens group comprises at least one automatic lens group. The automatic focusing lens group comprises at least one automatic lens group, and the manual driving assembly is connected with and manually drives the manual focusing lens group; a motor of the automatic driving assembly is in driving connection with the automatic focusing lens group; when the manual focusing lens group moves to a preset position along the optical axis, the position induction triggering unit is triggered to start the motor to drive the automatic focusing lens group to execute automatic focusing, the manual focusing lens group and the automatic focusing lens group are sequentially arranged along the optical axis, relay type optical path design is achieved, the size of the lens can be reduced, and redundant motion of the focusing lens groups can be avoided; the position sensing trigger unit is triggered to quickly switch the focusing mode, the movement of a single focusing lens group can be accurately controlled, and the focusing precision and speed are improved.

Description

Technical Field

[0001] This utility model belongs to the field of optical imaging technology, specifically relating to a lens and camera device with dual linkage focusing mode. Background Technology

[0002] Currently, cameras and camcorders use a wide variety of interchangeable macro lenses, ranging from infinity magnification to equivalent magnification. One type involves a change in the overall length of the lens during focusing. When shooting macro, it's easy to disturb sensitive insects. Furthermore, due to the large amount of focusing movement, numerous lens elements, and the relatively heavy focusing assembly, a powerful motor is essential for achieving fast focusing. Additionally, macro photography has a very shallow depth of field. In many cases, autofocus is turned off and the camera is set to manual mode. However, to drive the heavy focusing assembly, a powerful motor with a long travel distance is still required, leading to high cost, low efficiency, and difficulty in miniaturization, making it challenging to achieve low-cost operation.

[0003] Another method uses internal focusing, where the front lens group (the lens group closest to the subject) remains stationary, meaning the entire optical system remains unchanged throughout the focusing process. For macro lenses with a maximum magnification of 0.5x or higher, the focusing system requires at least two lens groups to move to achieve focusing. Because more than two lens groups move during focusing, the amount of movement is significant to achieve a macro effect of 0.5x or higher. In autofocus mode, the motor drive power is high and the travel is long, making it very difficult to achieve high-speed autofocus throughout the entire process, resulting in high costs and challenges in miniaturization.

[0004] Therefore, it is necessary to design a lens and camera device with a dual-linkage focusing mode. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a lens and camera device with dual linkage focusing mode to solve the problems of large focusing movement of lens group in current macro lenses, as well as insufficient accuracy and slow response speed in autofocus mode.

[0006] To achieve the above and other related objectives, this utility model proposes a lens with a dual-linkage focusing mode, comprising:

[0007] Manual focusing lens group, including at least one manual lens group;

[0008] An autofocus lens group, including at least one autofocus lens group;

[0009] A manual drive assembly is connected to and manually drives the manual focus lens group;

[0010] An automatic drive assembly includes a motor, the motor being driven and connected to the autofocus lens group;

[0011] The position sensing trigger unit is activated when the manual focus lens group moves to a preset position along the optical axis, thereby starting the motor to drive the autofocus lens group to perform autofocus.

[0012] In one embodiment of this utility model, the manual focus lens group performs focusing from infinity to a magnification of 0.5 or higher; the autofocus lens group performs focusing from infinity to a magnification of less than 0.5, and the preset position corresponds to the manual focus lens group being in an infinity optical state.

[0013] In one embodiment of the present invention, the manual drive assembly includes a curved cylinder and a manual slide cylinder coaxially sleeved together. The manual slide cylinder is fixedly sleeved on the first lens barrel of the manual focusing lens group, and the rotation of the curved cylinder drives the manual slide cylinder to move axially.

[0014] In one embodiment of the present invention, the manual drive assembly further includes a manual focusing main cylinder. The main cylinder has at least one straight groove along its axial direction on its cylinder wall, and the curved cylinder has at least one spiral curved groove on its cylinder wall. The manual sliding cylinder is provided with at least one guide pin. The straight groove, the spiral curved groove and the guide pin correspond one-to-one, such that the first end of the guide pin is slidably engaged in the straight groove and the second end is slidably engaged in the curved groove.

[0015] In one embodiment of the present invention, the manual focusing lens group includes two manual lens groups. Three pairs of guide pins are evenly provided in the same circumferential direction of the manual slide tube, and each pair of guide pins corresponds to the first lens tube arrangement of the two manual lens groups, and each pair of guide pins is located on the same axial direction of the manual focusing lens group.

[0016] In one embodiment of this utility model, the automatic drive assembly further includes a pawl and a screw. The screw is connected to the output end of the motor and is arranged parallel to the axis of the autofocus lens assembly. One end of the pawl is threadedly connected to the screw, and the other end is fixedly connected to the second lens barrel of the autofocus lens assembly.

[0017] In one embodiment of the present invention, the automatic drive assembly further includes an autofocus outer sleeve, which is fixedly sleeved on the second lens barrel of the autofocus lens assembly. The second lens barrel is provided with at least one guide post, and the autofocus outer sleeve is provided with at least one guide hole along its axial direction.

[0018] In one embodiment of this utility model, a tightening ring is further included, which is fixedly sleeved on the autofocus outer sleeve; the position sensing trigger unit includes a trigger and a sensor, the trigger is disposed on the curved cylinder, and the sensor is correspondingly disposed on the tightening ring. When the manual focus lens group reaches the preset position, the trigger activates the sensor to start the motor.

[0019] In one embodiment of this utility model, the motor is a voice coil motor or a stepper motor.

[0020] To achieve the above-mentioned objectives and other related objectives, this utility model proposes a camera device, including the aforementioned dual-linkage focusing lens.

[0021] The beneficial technical effects of this utility model include at least the following:

[0022] This invention proposes a dual-linkage focusing mode lens and camera device. When the manual focus lens group moves along the optical axis to a preset position, it is in an infinity optical state. Simultaneously, the position sensing trigger unit is activated, starting the motor to drive the autofocus lens group to perform autofocus faster than the manual focus lens group. When switching from autofocus mode to manual focus mode, the position sensing trigger unit only needs to be deactivated. Therefore, the manual focus mode and autofocus mode achieve a dual-linkage coordinated design through the position sensing trigger unit, enabling fast and accurate focus switching.

[0023] Specifically, the combination of a lightweight autofocus lens group and a miniature motor improves autofocus response speed by more than 30%. The manual focus and autofocus lens groups are arranged sequentially along the optical axis, achieving a relay-style optical path design for manual and autofocus modes. This not only reduces the lens size but also allows for control of a single variable. When one focusing lens group moves to focus, the other is at infinity. Focusing only requires controlling the movement of a single lens group, avoiding redundant movement of the focusing lens groups and precisely controlling a single variable, resulting in higher focusing accuracy and faster speed. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.

[0025] Figure 1 This is a schematic diagram of the structure of a dual-linkage focusing mode lens in one embodiment of the present invention.

[0026] Figure 2 This is a cross-sectional view of a dual-linkage focusing mode lens in one embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the curved cylinder in one embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram of the manual focusing main tube in one embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the structure of the manual slide in one embodiment of the present invention.

[0030] Figure 6 This is a schematic diagram of the autofocus lens assembly and the automatic drive component in one embodiment of the present invention.

[0031] Figure 7 This is a cross-sectional view of the autofocus lens assembly and the automatic drive component in one embodiment of the present invention.

[0032] Figure 8 This is a cross-sectional view of the manual focus lens assembly and manual drive component in one embodiment of the present invention.

[0033] Figure 9 This is a schematic diagram of the structure of a dual-linkage focusing mode lens in another embodiment of the present invention.

[0034] Figure 10 This is a cross-sectional view of a lens with a dual-linkage focusing mode in another embodiment of the present invention.

[0035] Labeling Explanation: 11-Manual Lens Group; 12-First Lens Barrel; 21-Automatic Lens Group; 22-Second Lens Barrel; 221-Guide Post; 31-Motor; 32-Claw; 33-Screw; 34-Autofocus Outer Tube; 4-Position Sensing Trigger Unit; 41-Trigger; 42-Sensor; 51-Curved Tube; 511-Helical Curved Groove; 52-Manual Slide Tube; 521-Guide Pin; 53-Manual Focusing Main Tube; 531-Straight Groove; 6-Tightening Ring. Detailed Implementation

[0036] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0037] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0038] Please see Figure 1 and Figure 2 To achieve the above and other related objectives, this utility model proposes a dual-linkage focusing mode lens, including a manual focus lens group, an autofocus lens group, a manual drive assembly, an automatic drive assembly, and a position sensing trigger unit 4. The manual focus lens group includes at least one manual lens group 11; the autofocus lens group includes at least one automatic lens group 21; the manual drive assembly is connected to and manually drives the manual focus lens group; the automatic drive assembly includes a motor 31, which drives and is connected to the autofocus lens group; when the manual focus lens group moves along the optical axis to a preset position, the position sensing trigger unit 4 is triggered to start the motor 31 to drive the autofocus lens group to perform autofocus.

[0039] It should be noted that the position sensing trigger unit 4 is used to automatically switch to the autofocus mode of the autofocus lens group when the manual focus lens group reaches the preset position. It can be triggered by mechanical linkage or electromagnetic linkage, and it responds to the mechanical displacement of the manual focus lens group to generate an autofocus start signal, such as mechanical contact microswitches, contact springs, etc., and non-contact Hall sensors, photoelectric switches, capacitive sensors, etc.

[0040] Therefore, this utility model provides a dual-linkage focusing mode lens, which includes an autofocus lens group and a manual focus lens group. The autofocus lens group performs autofocus mode, and the manual focus lens group performs manual focus mode. The autofocus mode and manual focus mode are precisely switched via a position sensing trigger unit 4. Moreover, when switching to one focus mode, the corresponding focus lens group for the other focus mode is in an infinity optical state, so that only a single focus lens group needs to move during focusing, reducing the amount of focusing movement. The use of the position sensing trigger unit 4 ensures accurate trigger position and short trigger response time. This achieves a combination of long-stroke manual and short-stroke fast autofocus in the dual-linkage focusing mode lens, improving focusing speed and focusing accuracy.

[0041] In one embodiment of this utility model, the manual focus lens group performs focusing from infinity to a magnification of 0.5 or higher; the autofocus lens group performs focusing from infinity to a magnification of less than 0.5, and the preset position corresponds to the manual focus lens group being in an infinity optical state.

[0042] It is understandable that the magnification ratio (β) is a key parameter in optical lens design describing the ratio of image height to object height. When β = 1 × (1:1), the image height equals the object height (the image size of the subject on the sensor is the same as its actual size), and the object distance (u) equals the image distance (v) equals twice the focal length (2f). When β = 0.5 × (1:2), the image height is half the object height; for example, a 10mm object appears as a 5mm image, and the object distance (u) equals three times the focal length (3f). β < 0.1 × (telephoto) is suitable for landscape photography, such as using a 200mm lens to photograph distant mountains. In this invention, the manual focus lens group is responsible for focusing from infinity (β≈0) to 0.5 × and above (generally reaching 2 ×) (large-stroke manual movement), while the autofocus lens group can focus from infinity (β≈0) to within 0.5 × (small-stroke automatic). The manual focusing lens assembly of this invention is relatively heavy and has a large travel distance when manually focusing, but it can complete high-precision close-up work without the need for a high-precision motor drive. The autofocus lens assembly is lightweight and has a small travel distance when manually focusing, and can quickly move to complete medium and telephoto work under the drive of a micro motor.

[0043] Please see Figure 3 and Figure 5 In one embodiment of the present invention, the manual drive assembly includes a curved cylinder 51 and a manual slide cylinder 52 coaxially sleeved together. The manual slide cylinder 52 is fixedly sleeved on the first lens barrel 12 of the manual focusing lens assembly. The rotation of the curved cylinder 51 drives the manual slide cylinder 52 to move axially.

[0044] It is understandable that the curved cylinder 51 and the manual slide cylinder 52 are fitted with a clearance. When the curved cylinder 51 is rotated manually, an axial force is generated through the coupling interface between the curved cylinder 51 and the manual slide cylinder 52. This force drives the manual slide cylinder 52 and the fixedly connected first lens barrel 12 to move along the optical axis. When the curved cylinder 51 is rotated in the opposite direction, the manual slide cylinder 52 retracts through the same mechanism.

[0045] Please see Figure 4 and Figure 8 In one embodiment of the present invention, the manual drive assembly further includes a manual focusing main cylinder 53. At least one straight groove 531 is formed on the cylinder wall of the manual focusing main cylinder 53 along its axial direction. At least one spiral curved groove 511 is formed on the cylinder wall of the curved cylinder 51. At least one guide pin 521 is provided on the manual sliding cylinder 52. The straight groove 531, the spiral curved groove 511 and the guide pin 521 correspond one-to-one, such that the first end of the guide pin 521 is slidably engaged in the straight groove 531 and the second end is slidably engaged in the curved groove 511.

[0046] Furthermore, the helix angle α of the helical groove 511 can be 15° to 45°, satisfying tanα = v / ω, where v is the axial movement velocity of the manual slide cylinder 52 and ω is the rotational angular velocity of the curved cylinder 511. When the curved cylinder 51 rotates, the inclined surface of the helical groove 511 interacts with the guide pin 521. The axial component of the force pushes the manual slide cylinder 52 to move axially, while the radial component of the force is constrained by the straight groove 531, ensuring that the manual slide cylinder 52 only moves axially. The aforementioned preset position is a hard calibration point determined by the mechanical limit of the helical groove 511 of the curved cylinder 51.

[0047] Please see Figure 1 and Figure 2 In one embodiment of this utility model, when the manual focusing lens group includes a manual lens group 11, three guide pins 521 are evenly provided on the same circumferential direction of the manual slide cylinder 52.

[0048] It should be noted that when the manual focusing lens group includes one manual lens group 11, the autofocus lens group can be configured with two autofocus lens groups 21. Three guide pins 521, evenly distributed at 120°, slide on the spiral groove 511 of the curved cylinder 51. Simultaneously, the guide pins 521 are constrained to move linearly along the straight groove 531 of the manual focusing main cylinder 53. Therefore, they can drive the manual focusing lens group to move axially, i.e., along the optical axis. The even distribution of the three guide pins 521 can control the sway angle of the manual lens group 11 within the range of 0.001°.

[0049] Please see Figure 9 and Figure 10 In one embodiment of the present invention, when the manual focusing lens group includes two manual lens groups, three pairs of guide pins 521 are evenly provided in the same circumferential direction of the manual slide tube 52. Each pair of guide pins 521 is arranged corresponding to the first lens tube 12 of the two manual lens groups 11, and each pair of guide pins 521 is located on the same axial direction of the manual focusing lens group.

[0050] It should be noted that the manual focusing lens group includes two manual lens groups 11, while the autofocus lens group can be configured with one auto lens group 21. The coaxially paired guide pins 521 enable the two manual lens groups to move synchronously, with a synchronization error within 0.003mm.

[0051] Please see Figure 6 In one embodiment of the present invention, the automatic drive assembly further includes a pawl 32 and a screw 33. The screw 33 is connected to the output end of the motor 31 and is arranged parallel to the axis of the autofocus lens assembly. One end of the pawl 32 is threadedly connected to the screw 33, and the other end is fixedly connected to the second lens barrel 22 of the autofocus lens assembly.

[0052] It should be noted that the screw 33 can be a precision ball screw, and the pre-tightened threaded design of the jaws 32 can control the transmission backlash within 0.003mm. The design of the jaws 32 also allows for quick and easy disassembly and replacement. The automatic drive assembly, including the motor 31, jaws 32, and screw 33, achieves weight reduction while improving transmission efficiency and precision.

[0053] Please see Figure 7 In one embodiment of the present invention, the automatic drive assembly further includes an autofocus outer sleeve 34, which is fixedly sleeved on the second lens barrel 22 of the autofocus lens assembly. The second lens barrel 22 is provided with at least one guide post 221, and the autofocus outer sleeve 34 is provided with a guide hole along its axial direction.

[0054] Furthermore, the motor 31 is mounted on the autofocus outer sleeve 34, and the guide post 221 and the guide hole are designed to ensure that the autofocus lens group moves precisely along the optical axis of the optical system when it achieves autofocus under the drive of the motor 31, thereby further ensuring the accuracy of close-up focusing.

[0055] In one embodiment of the present invention, a tightening ring 6 is also included, which is fixedly sleeved on the autofocus outer sleeve 34; the position sensing trigger unit 4 includes a trigger 41 and a sensor 42, the trigger 41 is disposed on the curved cylinder 51, and the sensor 42 is correspondingly disposed on the tightening ring 6. When the manual focusing lens group reaches the preset position, the trigger 41 activates the sensor 42 to start the motor 31.

[0056] Furthermore, the trigger 41 can be a guide pin, located at the end of the curved cylinder 51 near the autofocus lens assembly. The sensor 42 can be a micro switch, located at the end of the retaining ring 6 near the curved cylinder 51. The hard limit at the end of the spiral groove 511 of the curved cylinder 51 ensures that the guide pin accurately reaches the trigger position each time. Pressing the micro switch lever causes the internal spring plate to bounce instantaneously, closing the contact and connecting the circuit. At this time, the motor 31 starts, entering the autofocus mode. When autofocus is not needed, simply rotate the curved cylinder 51 slightly, and the trigger 41 will move away from the sensor 42, disconnecting the contact. The motor 31 then drives the autofocus lens assembly back to the infinity position, allowing manual rotation of the curved cylinder 51 for manual focusing.

[0057] In one embodiment of this utility model, the motor 31 is a voice coil motor or a stepper motor.

[0058] It's understandable that both voice coil motors and stepper motors are miniature motors. A voice coil motor can achieve an acceleration of up to 50 m / s². 2It can achieve a focus change from ∞ to 1.0 in just 0.15 seconds. The stepper motor does not require a position sensor and precisely controls the displacement through the number of pulses. Therefore, both voice coil motors and stepper motors are small and lightweight motors that can meet the requirements of high-precision adjustment and fast response.

[0059] Furthermore, the automatic lens group 21 of this invention is a lightweight lens group, with a weight of less than 20g. The moving mass M1 of the manual focusing lens group and the moving mass M2 of the automatic focusing lens group can be set to M1 / M2≥3. Therefore, the automatic focusing adopts a lightweight lens group and a micro motor (voice coil motor or stepper motor), which improves the response speed by more than 30%.

[0060] Meanwhile, the lens of this invention features a long-stroke manual focus mode and an automated fast focus mode. Furthermore, the manual and automatic focus modes are designed in a relay fashion to avoid redundant movement of the focusing lens group, achieving high-precision and efficient focusing. Therefore, this dual-linkage focusing mode lens can be applied to SLR cameras, cinema lenses, drone gimbal cameras, and other devices, significantly improving focusing success rate, especially in low-light or moving scenes.

[0061] To achieve the above-mentioned objectives and other related objectives, this utility model proposes a camera device, including the aforementioned dual-linkage focusing mode lens.

[0062] This invention relates to a dual-linkage focusing mode lens and camera device, achieving a collaborative design of manual and autofocus modes, and enabling rapid and precise relay-style focus switching through a position-sensing trigger unit 4. Specifically, one or more manual lens groups 11 are driven to move by a curved cylinder 51. When the manual focusing lens group returns to the infinity position, the position-sensing trigger unit 4 is triggered, activating the lightweight autofocus lens group 21 for autofocus. This design solves the problems of large focusing movement, heavy lens groups that cannot be driven by small motors, and slow autofocus response speed in traditional lenses. It ensures accurate trigger position and short trigger response time, guaranteeing breakthrough accuracy in close-up focusing, and combining large-stroke manual and small-stroke automatic focusing in macro lenses. This reduces lens size and saves costs, while also reducing the movement of the focusing lens group and improving autofocus speed.

[0063] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0064] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0065] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0066] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0067] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0068] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0069] The above description of the embodiments shown in this utility model (including the content set forth in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments described herein, and such modifications will be within the spirit and scope of the utility model.

[0070] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0071] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A lens with a dual-linkage focusing mode, characterized in that, include: The manual focusing lens group includes at least one manual lens group (11); An autofocus lens assembly, including at least one autofocus lens group (21); A manual drive assembly is connected to and manually drives the manual focus lens group; An automatic drive assembly includes a motor (31) that drives the autofocus lens assembly. The position sensing trigger unit (4) is triggered when the manual focusing lens group moves to a preset position along the optical axis to start the motor (31) to drive the autofocus lens group to perform autofocus.

2. The dual-linkage focusing mode lens according to claim 1, characterized in that, The manual focus lens group performs focusing from infinity to a magnification of 0.5 or higher; the autofocus lens group performs focusing from infinity to a magnification of less than 0.5, and the preset position corresponds to the manual focus lens group being in an infinity optical state.

3. The lens with dual-linkage focusing mode according to claim 1, characterized in that, The manual drive assembly includes a curved cylinder (51) and a manual slide cylinder (52) coaxially sleeved together. The manual slide cylinder (52) is fixedly sleeved on the first lens barrel (12) of the manual focusing lens assembly. The rotation of the curved cylinder (51) drives the manual slide cylinder (52) to move axially.

4. The dual-linkage focusing mode lens according to claim 3, characterized in that, The manual drive assembly also includes a manual focusing main cylinder (53). The main cylinder (53) has at least one straight groove (531) along its axial direction on its cylinder wall. The curved cylinder (51) has at least one spiral curved groove (511) on its cylinder wall. The manual sliding cylinder (52) has at least one guide pin (521). The straight groove (531), the spiral curved groove (511) and the guide pin (521) correspond one-to-one, such that the first end of the guide pin (521) is slidably fitted in the straight groove (531) and the second end is slidably fitted in the curved groove (511).

5. The dual-linkage focusing mode lens according to claim 4, characterized in that, The manual focusing lens group includes two manual lens groups. Three pairs of guide pins (521) are evenly arranged in the same circumferential direction of the manual slide tube (52). Each pair of guide pins (521) is arranged corresponding to the first lens tube (12) of the two manual lens groups, and each pair of guide pins (521) is located on the same axis of the manual focusing lens group.

6. The lens with dual-linkage focusing mode according to claim 5, characterized in that, The automatic drive assembly also includes a pawl (32) and a screw (33). The screw (33) is connected to the output end of the motor (31) and is arranged parallel to the axis of the autofocus lens group. One end of the pawl (32) is threadedly connected to the screw (33), and the other end is fixedly connected to the second lens barrel (22) of the autofocus lens group.

7. The lens with dual-linkage focusing mode according to claim 6, characterized in that, The automatic drive assembly also includes an autofocus outer sleeve (34), which is fixedly sleeved on the second lens barrel (22) of the autofocus lens group. The second lens barrel (22) is provided with at least one guide post (221), and the autofocus outer sleeve (34) is provided with at least one guide hole along its axial direction.

8. The lens with dual-linkage focusing mode according to claim 7, characterized in that, It also includes a tightening ring (6), which is fixedly sleeved on the autofocus outer sleeve (34); the position sensing trigger unit (4) includes a trigger (41) and a sensor (42), the trigger (41) is disposed on the curved cylinder (51), and the sensor (42) is correspondingly disposed on the tightening ring (6). When the manual focus lens group reaches the preset position, the trigger (41) activates the sensor (42) to start the motor (31).

9. The dual-linkage focusing mode lens according to claim 8, characterized in that, The motor (31) is a voice coil motor or a stepper motor.

10. A camera device, characterized in that, Includes the dual-linkage focusing mode lens as described in any one of claims 1-9.

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