CN114584698A - Focal length adjusting structure of lens, lens and terminal - Google Patents
Focal length adjusting structure of lens, lens and terminal Download PDFInfo
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- CN114584698A CN114584698A CN202011287382.2A CN202011287382A CN114584698A CN 114584698 A CN114584698 A CN 114584698A CN 202011287382 A CN202011287382 A CN 202011287382A CN 114584698 A CN114584698 A CN 114584698A
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- 230000003287 optical effect Effects 0.000 claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 10
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 14
- 238000005096 rolling process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
- H04N23/651—Control of camera operation in relation to power supply for reducing power consumption by affecting camera operations, e.g. sleep mode, hibernation mode or power off of selective parts of the camera
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Abstract
The disclosure relates to a focal length adjusting structure of a lens, the lens and a terminal, wherein a first magnetic structure comprises a plurality of first magnets which are mutually contacted, the first magnets are arranged in a stacking mode along a set direction, a south pole and a north pole of each first magnet are arranged along an optical axis direction, and the adjacent first magnets are mutually attracted; the second magnetic structure comprises a plurality of second magnets which are mutually contacted, the plurality of second magnets are arranged in a stacking mode along the set direction, the south pole and the north pole of each second magnet are arranged along the optical axis direction, and the adjacent second magnets are mutually attracted. In the focal length adjusting structure, the waste of power resources is better avoided to a certain extent, the abrasion between structures which move mutually can be better avoided, the stability of focal length adjustment is ensured, and the service life of the focal length adjusting structure is prolonged.
Description
Technical Field
The present disclosure relates to the field of terminal technologies, and in particular, to a focal length adjustment structure for a lens, and a terminal.
Background
In the related art, the focal length adjusting structure of the lens generally moves the lens for adjusting the focal length along the optical axis of the light passing through the lens through the cooperation between the magnetic field formed by the conductive coil and the magnetic field formed by the magnet, thereby adjusting the focal length.
Specifically, referring to fig. 1, two first magnetic structures 11a and two second magnetic structures 12a arranged at intervals are generally provided, but each of the two magnetic structures arranged at intervals includes one magnet, and not only magnetic lines of force generated between the two magnets (refer to a dotted line in fig. 1, where an arrow on the dotted line indicates a direction of the magnetic lines of force) but also magnetic lines of force each pointing from an N pole to an S pole, and in addition, there are also magnetic lines of force in which the N pole of one magnet points to the S pole of the other magnet, so that the magnetic lines of force in a magnetic field generated by the two magnets are complicated, and magnetic fields generated by the first conductive coil 21a and the second conductive coil 22a outside the magnets are affected, which affects a force for driving the lens to move, and thus a force only in an optical axis direction of light passing through the lens cannot be generated.
On one hand, the force generated by the matching of the conductive coil and the magnet is only partially used for the movement of the lens to adjust the focal length, so that the waste of power resources exists; on the other hand, because some component of the force generated by the conductive coil and the magnet is not directed to the required movement direction of the lens, the structures moving mutually are abraded mutually, and the adjustment of the focal length and the service life of the focal length adjusting structure are influenced.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a focal length adjustment structure of a lens, a lens and a terminal.
According to a first aspect of the embodiments of the present disclosure, a focal length adjusting structure of a lens is provided, where the focal length adjusting structure includes at least one first magnetic structure group and a first lens connected to the first magnetic structure group and used for adjusting a focal length, and the focal length adjusting structure drives the first lens to move along an optical axis of light passing through the first lens through the first magnetic structure group, so as to adjust a focal length of the lens;
the first magnetic structure group comprises a first magnetic structure and a second magnetic structure, the first magnetic structure and the second magnetic structure are respectively positioned on two sides of the first lens, and the first magnetic structure and the second magnetic structure are mutually attracted;
the first magnetic structure comprises a plurality of first magnets which are mutually contacted, the plurality of first magnets are arranged in a stacking mode along the set direction, the south pole and the north pole of each first magnet are arranged along the optical axis direction, and the adjacent first magnets are mutually attracted;
the second magnetic structure comprises a plurality of second magnets which are mutually contacted, the plurality of second magnets are arranged in a stacking mode along the set direction, the south pole and the north pole of each second magnet are arranged along the optical axis direction, and the adjacent second magnets are mutually attracted.
Optionally, the number of the first magnets and the number of the second magnets are equal.
Optionally, two of the number of first magnets; and/or the number of the second magnets is two.
Optionally, the focal length adjustment structure further includes a first conductive coil set cooperating with the first magnetic structure set, and the focal length adjustment structure drives the first magnetic structure set to move through cooperation between a magnetic field formed by the first magnetic structure set and a magnetic field formed by the first conductive coil set;
the first conductive coil set comprises at least one first conductive coil matched with the first magnetic structure and at least one second conductive coil matched with the second magnetic structure;
in the set direction, the first conductive coil is located on one side of the first magnetic structure far away from the second magnetic structure, and the second conductive coil is located on one side of the second magnetic structure far away from the first magnetic structure.
Optionally, the first and second electrically conductive coils are symmetrically disposed about the optical axis.
Optionally, the first magnetic structure and the second magnetic structure are symmetrically arranged along the optical axis.
Optionally, the focal length adjustment structure includes a mounting structure, the first lens is fixedly connected to the mounting structure, and the first magnetic structure group is fixedly connected to the mounting structure.
Optionally, the mounting structure is configured as a square structure, and the first magnetic structure and the second magnetic structure are respectively located at two opposite sides of the mounting structure.
According to a second aspect of embodiments of the present disclosure, there is provided a lens barrel including the focal length adjustment structure according to the first aspect.
Optionally, the lens further includes an optical sensor and at least one second lens, the first lens of the focal length adjustment structure is located between the optical sensor and the second lens, and the second lens is used to control transmission of the light passing through the second lens to a position where the optical sensor is located.
According to a third aspect of the embodiments of the present disclosure, there is provided a mobile terminal including the lens according to the second aspect.
Optionally, the mobile terminal includes a middle frame, and the lens is mounted on the middle frame.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in this focus adjustment structure, first magnetic structure group can produce more reliably and stable drive power for drive first lens along the optical axis motion, realize the adjustment of focus, avoided the waste of electric power resource to a certain extent better, and also can avoid producing wearing and tearing between the structure of doing the inter motion better, ensure focus adjustment's stability, prolong the life of this focus adjustment structure.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a partial plan view of a lens barrel shown according to the related art (dotted lines in the figure indicate lines of magnetic force).
Fig. 2 is a partial top view of a lens shown in accordance with an exemplary embodiment (dashed lines indicate lines of magnetic force).
FIG. 3 is a schematic illustration of the magnetic fields of a first set of magnetic structures shown in accordance with an exemplary embodiment.
Fig. 4 is a schematic diagram illustrating the principle of light transmission of a lens according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The utility model provides a focus adjustment structure of camera lens, in this focus adjustment structure, first magnetic structure group can produce more reliable and stable drive power for drive first lens is along the optical axis motion, realizes the adjustment of focus, has avoided the waste of electric power resource to a certain extent better, and also can avoid doing to produce wearing and tearing between the structure of inter motion better, ensures focus adjustment's stability, prolongs the life of this focus adjustment structure.
In an exemplary embodiment, a focal length adjustment structure of a lens is provided, and as shown in fig. 2 to 4, the focal length adjustment structure includes at least one first magnetic structure group 1 and a first lens 3 connected to the first magnetic structure group 1 for adjusting a focal length, and the focal length adjustment structure drives the first lens 3 to move along an optical axis 6 (shown in fig. 4) of a light ray passing through the first lens 3 through the first magnetic structure group 1, so as to adjust the focal length of the lens. It can be understood that the more the first magnetic structure groups 1 are included in the focal length adjusting structure, correspondingly, the more the first lenses 3 are connected to the first magnetic structure groups 1, and therefore, the higher the accuracy and the larger the range of the focal length adjustment are.
The first magnetic structure group 1 includes a first magnetic structure 11 and a second magnetic structure 12 that are mutually matched, the first magnetic structure 11 and the second magnetic structure 12 are respectively located at two sides of the first lens 3, the first magnetic structure 11 and the second magnetic structure 12 are arranged at intervals, the first magnetic structure 11 and the second magnetic structure 12 attract each other, the first magnetic structure 11 includes a plurality of first magnets that are mutually contacted, the plurality of first magnets are stacked along a set direction (refer to a direction shown by X in fig. 2), the set direction is perpendicular to the optical axis, and the set direction is a direction in which attractive forces of the first magnetic structure and the second magnetic structure attract each other are located. The south pole and the north pole of each first magnet are arranged along the direction of the optical axis 6, and the adjacent first magnets attract each other; the second magnetic structure 12 includes a plurality of second magnets in contact with each other, the plurality of second magnets are stacked in the setting direction, a south pole and a north pole of each second magnet are arranged in the direction of the optical axis 6, and adjacent second magnets attract each other.
It should be noted that any magnetic member having N and S poles is substantially a magnet, that is, the first magnet and the second magnet of the present application include any magnetic member having N and S poles.
In the focus adjustment structure, the first magnetic structure 11 includes a plurality of first magnets, the second magnetic structure 12 includes a plurality of second magnets, and since the first magnet located at the outermost side and all the second magnets do not affect each other, the second magnet located at the outermost side and all the first magnets do not affect each other, and the outermost side and the first magnet and the outermost second magnet are used for generating a force for driving the first lens 3 to move, wherein the outer side refers to a side away from the center of the focus adjustment structure, for example, both the upper and lower sides in fig. 2 to 4 are outer sides. Therefore, the first magnetic structure group 1 can generate a reliable and stable driving force for driving the first lens 3 to move along the optical axis 6, so as to adjust the focal length. The focal length adjusting structure can better avoid the waste of power resources to a certain extent, can also better avoid the abrasion between the structures which move mutually, ensure the stability of focal length adjustment and prolong the service life of the focal length adjusting structure.
In one example (the example is not shown in the figures), the focus adjustment structure comprises a first set of magnetic structures, wherein the first magnetic structure comprises two first magnets and the second magnetic structure comprises three first magnets. In this focus adjustment structure, the magnetic field of the first magnet in the outside can not be influenced to the second magnetic structure, the magnetic field of the second magnet in the outside can not be influenced yet to first magnetic structure, the magnetic line of force in the magnetic field that first magnetic structure and second magnetic structure formed is comparatively regular, when producing the drive power that is used for driving first lens motion with first magnetic structure and second magnetic structure cooperation respectively through the conductive coil, the direction of the drive power that produces is comparatively regular, the size of the drive power that produces is comparatively stable, the waste of electric power resource has been avoided to a certain extent better, and also can avoid doing the wearing and tearing that produce between the structure of inter motion better, ensure the stability of focus adjustment, prolong the life of this focus adjustment structure.
In one example (the example is not shown in the figures), the focus adjustment structure includes a first magnetic structure group, wherein the first magnetic structure includes three first magnets and the second magnetic structure includes two first magnets. In this focus adjustment structure, when producing the drive power that is used for driving the first lens motion with first magnetic structure and second magnetic structure cooperation respectively through the conductive coil, the direction of the drive power of production is comparatively regular, and the size of the drive power of production is comparatively stable, has avoided the waste of electric power resource to a certain extent better to also can avoid doing the production wearing and tearing between the structure of inter motion better, ensure focus adjustment's stability, prolong this focus adjustment structure's life.
In an exemplary embodiment, a focus adjustment structure is provided, as shown in fig. 2 to 4, in which the number of the first magnets and the number of the second magnets are equal, so that the arrangement of the first magnetic structure 11 and the second magnetic structure 12 is facilitated, and the balance of the mass distribution of the focus adjustment structure is ensured to some extent, thereby ensuring the overall stability of the focus adjustment structure.
In one example, as shown with reference to fig. 2-4, the number of first magnets is two and the number of second magnets is also two. It is possible to avoid with a minimum number of magnets that the magnetic field of the second magnetic structure 12 affects the magnetic field of the first magnet for generating the driving force and that the magnetic field of the first magnetic structure 11 affects the magnetic field of the second magnet for generating the driving force, as shown in fig. 2 and 3, where the dashed lines are the magnetic lines of force and the arrows on the dashed lines indicate the directions of the magnetic lines of force. The first magnetic structure group 1 can generate a reliable and stable driving force for driving the first lens 3 to move along the optical axis 6, so as to adjust the focal length. This focus adjustment structure has not only avoided the waste of electric power resource better to also can avoid doing the wearing and tearing to produce between the structure of inter motion better, ensure focus adjustment's stability, prolong this focus adjustment structure's life, in addition, still reducible cost, reduce the space of first magnetic structure group 1 and occupy.
In an exemplary embodiment, a focus adjustment structure is provided, which is shown in fig. 2 to 4, and further includes a first conductive coil set 2 cooperating with the first magnetic structure set 1, and the focus adjustment structure drives the first magnetic structure set 1 to move through cooperation between a magnetic field formed by the first magnetic structure set 1 and a magnetic field formed by the first conductive coil set 2; the first conductive coil set 2 includes at least one first conductive coil 21 cooperating with the first magnetic structure 11 and at least one second conductive coil 22 cooperating with the second magnetic structure 12, in the setting direction, the first conductive coil 21 is located on a side of the first magnetic structure 11 far away from the second magnetic structure 12, and the second conductive coil 22 is located on a side of the second magnetic structure 12 far away from the first magnetic structure 11.
It can be understood that, under the same other parameters, the greater the number of the first conductive coils 21, the greater the force which is generated by the first magnetic structure 11 and which moves the first lens 3, so that the first lens 3 can be better driven to move, and the adjustment of the focal length can be more swiftly realized. Correspondingly, under the condition that other parameters are the same, the larger the number of the second conductive coils 22, the larger the force which is generated by the second magnetic structures 12 and is used for moving the first lens 3, the better the first lens 3 can be driven to move, and the adjustment of the focal length can be realized more swiftly. In addition, when the first lens 3 is located between the first magnetic structure 11 and the second magnetic structure 12, in order to make the movement of the first lens 3 more smooth, the number of the first conductive coils 21 is the same as the number of the second conductive coils 22.
In an exemplary embodiment, there is provided a focus adjustment structure, as shown with reference to fig. 2 to 4, in which a first magnetic structure 11 and a second magnetic structure 12 are symmetrically disposed about an optical axis 6 to facilitate the disposition of the first magnetic structure 11 and the second magnetic structure 12; and/or the first and second conductive coils 21, 22 are symmetrically disposed about the optical axis 6 to facilitate the disposition of the first and second conductive coils 21, 22.
In one example, referring to fig. 2-4, first lens 3 is positioned between first magnetic structure 11 and second magnetic structure 12, first magnetic structure 11 and second magnetic structure 12 are symmetrically disposed about optical axis 6, and first conductive coil 21 and second conductive coil 22 are also symmetrically disposed about optical axis 6. In this way, by providing the first magnetic structure 11 and the second magnetic structure 12 with similar structures and the first conductive coil 21 and the second conductive coil 22 with similar structures, the first lens 3 can stably move along the optical axis 6, and the focus can be smoothly adjusted. The arrangement of the first magnetic structure group 1 and the first conductive coil group 2 is facilitated, and the space occupation of the focal length adjusting structure can be reduced to a certain degree.
In an exemplary embodiment, a focus adjustment structure is provided, and as shown in fig. 2 to 4, the focus adjustment structure includes a mounting structure 4, the first lens 3 is fixedly connected to the mounting structure 4, and the first magnetic structure group 1 is fixedly connected to the mounting structure 4, so that the overall structural stability of the focus adjustment structure is better ensured by the mounting structure 4. In the focal length adjusting structure, the first magnetic structure group 1 drives the first lens 3 to move through the mounting structure 4.
In one example, as shown with reference to fig. 2 to 4, the mounting structure 4 is configured as a square structure, such as a square structure or a rectangular structure, the first lens 3 is disposed inside the mounting structure 4, and the first magnetic structure 11 and the second magnetic structure 12 are respectively located at two opposite sides of the mounting structure 4 to ensure the overall stability of the entire focus adjustment structure. The size of the mounting structure 4 can be determined according to the number of the first lenses 3, the size of the first magnetic structure 11 and the size of the second magnetic structure 12.
In one example (the example is not shown in the figure), the mounting structure is configured as a regular hexahedron structure, two opposite side surfaces of the regular hexahedron structure are perpendicular to the optical axis, the other four side surfaces are parallel to the optical axis, the first lens is arranged inside the mounting structure, and the first magnetic structure and the second magnetic structure are respectively located at two opposite sides of the mounting structure to ensure the overall stability of the whole focal length adjustment structure.
In an exemplary embodiment, a focus adjustment structure is provided, as shown with reference to fig. 2-4, the focus adjustment structure includes a fixing bracket 5, a mounting structure 4, a first lens 3, a first magnetic structure set 1, and a first conductive coil set 2, the first lens 3 being mounted in the mounting structure 4. The fixing support 5 is a square support, the mounting structure 4 is a square structure, the square structure is matched with the square support, rolling grooves are arranged at each edge position of the fixing support 5 parallel to the optical axis 6, and balls are arranged at each vertex of the mounting structure 4. Wherein, two balls whose connecting line is parallel to the optical axis 6 share a rolling groove.
First magnetic structure group 1 includes first magnetic structure 11 and the second magnetic structure 12 that sets up along 6 direction intervals of optical axis, first magnetic structure 11 and second magnetic structure 12 are located mounting structure 4' S relative both sides respectively, and first magnetic structure 11 and second magnetic structure 12 are axisymmetric setting about optical axis 6, first magnetic structure 11 includes two first magnets of range upon range of setting up along setting for the direction, second magnetic structure 12 includes two second magnets of range upon range of setting up along setting for the direction, the N utmost point and the S utmost point of first magnet and second magnet all set up along 6 directions of optical axis.
The first conductive coil set 2 comprises a first conductive coil 21 and a second conductive coil 22, the first conductive coil 21 is located on the outer side of the first magnetic structure 11 and used for providing driving force for the first magnet located on the outermost side to move along the optical axis 6, and the second conductive coil 22 is located on the outer side of the second magnetic structure 12 and used for providing driving force for the second magnet located on the outermost side to move along the optical axis 6.
In this focus adjustment structure, first conductive coil 21 and the first magnet interact that is located the outside, make first magnetic structure 11 move along optical axis 6, and simultaneously, second conductive coil 22 and the second magnet interact that is located the outside, make second magnetic structure 12 move along the direction the same with the direction of first magnetic structure 11 motion, first magnetic structure 11 and second magnetic structure 12 move along same direction, drive mounting structure 4 and move, mounting structure 4 drives first lens 3 and moves along optical axis 6, realize the purpose of adjustment focus.
In this focus adjustment structure, owing to set up two first magnet, the first magnet that is located the inboard can avoid second magnetic structure 12 to produce the influence to the magnetic field of the first magnet that is located the outside, and in the same way, the second magnet that is located the inboard can avoid first magnetic structure 11 to produce the influence to the magnetic field of the second magnet that is located the outside. Therefore, the focal length adjusting structure can generate a reliable and stable driving force for driving the first lens 3 to move along the optical axis 6, so as to adjust the focal length. The focal length adjusting structure can better avoid the waste of power resources to a certain extent, can also better avoid the abrasion between the structures which move mutually, ensure the stability of focal length adjustment and prolong the service life of the focal length adjusting structure.
The present disclosure further provides a lens, which includes the above focal length adjustment structure, so that the lens has the beneficial effects corresponding to the above focal length adjustment structure, the focal length adjustment effect and the imaging effect of the lens are improved, and meanwhile, the service life of the lens can be prolonged.
In one example, referring to fig. 2-4, the lens is a periscopic lens mounted on a mobile phone, the lens includes a focal length adjustment structure, a flexible circuit board 10, a light sensor 11, and at least one second lens 7, wherein the light sensor 11 is, for example, an RGB sensor for detecting RGB data. The first lens 3 of the focal length adjusting structure is located between the optical sensor 11 and the second lens 7, and the second lens 7 is used for controlling the position of the optical sensor 11 where the light passing through the second lens 7 is transmitted. The optical axis 6 in the present application refers to the optical axis 6 of the light passing through the second lens 7.
The lens further comprises a second conductive coil group 9 and a second magnetic structure group 8, the second conductive coil group 9 comprises three conductive coils, the second magnetic structure group 8 comprises three magnets, each magnet corresponds to one conductive coil, and the second lens 7 is driven to rotate through the cooperation of the second conductive coil group 9 and the second magnetic structure group 8, so that the transmission direction of light rays is adjusted. The second mirror 7 is, for example, a prism or a reflecting mirror.
The focal length adjusting structure comprises a fixed support 5, a mounting structure 4, a first lens 3, a first magnetic structure group 1 and a first conductive coil group 2, wherein the first lens 3 is mounted in the mounting structure 4, and a flexible circuit board 10 is fixed through the fixed support 5. The fixing support 5 is a square support, the mounting structure 4 is a square structure, the square structure is matched with the square support, rolling grooves are arranged at each edge position of the fixing support 5 parallel to the optical axis 6, and balls are arranged at each vertex of the mounting structure 4. Wherein, two balls whose connecting line is parallel to the optical axis 6 share a rolling groove.
The first lens 3 is used for adjusting the focal length of the lens, and the first lens 3 is, for example, a convex lens or a concave lens.
First magnetic structure group 1 includes first magnetic structure 11 and the second magnetic structure 12 that sets up along 6 direction intervals of optical axis, first magnetic structure 11 and second magnetic structure 12 are located mounting structure 4' S relative both sides respectively, and first magnetic structure 11 and second magnetic structure 12 are axisymmetric setting about optical axis 6, first magnetic structure 11 includes two first magnets of range upon range of setting up along setting for the direction, second magnetic structure 12 includes two second magnets of range upon range of setting up along setting for the direction, the N utmost point and the S utmost point of first magnet and second magnet all set up along 6 directions of optical axis.
The first conductive coil set 2 is located on the flexible circuit board 10, and a detection circuit, such as a hall sensor detection circuit, is further disposed on the flexible circuit board 10. The first conductive coil set 27 comprises a first conductive coil 21 and a second conductive coil 22, the first conductive coil 21 is located outside the first magnetic structure 11 and is used for providing a driving force for the first magnet located at the outermost side to move along the optical axis 6, and the second conductive coil 22 is located outside the second magnetic structure 12 and is used for providing a driving force for the second magnet located at the outermost side to move along the optical axis 6.
In this focus adjustment structure, first conductive coil 21 and the first magnet interact that is located the outside, make first magnetic structure 11 move along optical axis 6, and simultaneously, second conductive coil 22 and the second magnet interact that is located the outside, make second magnetic structure 12 move along the direction the same with the direction of first magnetic structure 11 motion, first magnetic structure 11 and second magnetic structure 12 move along same direction, drive mounting structure 4 and move, mounting structure 4 drives first lens 3 and moves along optical axis 6, realize the purpose of adjustment focus.
The focal length adjusting structure is provided with a plurality of moving parts, the moving parts are arranged, the impact area between the moving parts and the moving track is increased, and the influence of the impact on the shaking of the first lens 3 is reduced; in addition, the plurality of moving parts can reduce the aging and abrasion speed of each moving part, the first lens 3 is prevented from being eccentric to a certain degree, the first lens 3 can still move stably, the stability of focal length adjustment is ensured, and good linear adjustment is realized.
In addition, because two first magnets are arranged, the first magnet positioned on the inner side can prevent the second magnetic structure 12 from influencing the magnetic field of the first magnet positioned on the outer side, and similarly, the second magnet positioned on the inner side can prevent the first magnetic structure 11 from influencing the magnetic field of the second magnet positioned on the outer side. Therefore, the focal length adjusting structure can generate a reliable and stable driving force for driving the first lens 3 to move along the optical axis 6, so as to adjust the focal length. The focal length adjusting structure can better avoid the waste of power resources to a certain extent, can also better avoid the abrasion between the structures which move mutually, ensure the stability of focal length adjustment and prolong the service life of the focal length adjusting structure.
The present disclosure also provides a mobile terminal, for example, a mobile phone, a notebook computer, a tablet computer, a camera, and other terminals with a shooting function. The mobile terminal comprises the lens, so that the mobile terminal has an effect corresponding to the lens.
The mobile terminal also comprises a middle frame used for installing the lens so as to ensure the reliable fixation of the lens.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (12)
1. A focal length adjusting structure of a lens is characterized in that the focal length adjusting structure comprises at least one first magnetic structure group and a first lens which is connected with the first magnetic structure group and is used for adjusting the focal length, the focal length adjusting structure drives the first lens to move along the optical axis of light rays passing through the first lens through the first magnetic structure group, and the focal length of the lens is adjusted;
the first magnetic structure group comprises a first magnetic structure and a second magnetic structure, the first magnetic structure and the second magnetic structure are respectively positioned on two sides of the first lens, and the first magnetic structure and the second magnetic structure are mutually attracted;
the first magnetic structure comprises a plurality of first magnets which are mutually contacted, the plurality of first magnets are arranged in a stacking mode along the set direction, the south pole and the north pole of each first magnet are arranged along the optical axis direction, and the adjacent first magnets are mutually attracted;
the second magnetic structure comprises a plurality of second magnets which are mutually contacted, the plurality of second magnets are arranged in a stacking mode along the set direction, the south pole and the north pole of each second magnet are arranged along the optical axis direction, and the adjacent second magnets are mutually attracted.
2. The focus adjustment structure according to claim 1, wherein the number of the first magnets and the number of the second magnets are equal.
3. The focus adjusting structure according to claim 2, wherein the number of the first magnets is two; and/or the number of the second magnets is two.
4. The focus adjustment structure of claim 1, further comprising a first set of conductive coils cooperating with the first set of magnetic structures, wherein the focus adjustment structure drives the first set of magnetic structures to move by cooperation of a magnetic field formed by the first set of magnetic structures and a magnetic field formed by the first set of conductive coils;
the first conductive coil set comprises at least one first conductive coil matched with the first magnetic structure and at least one second conductive coil matched with the second magnetic structure;
in the set direction, the first conductive coil is located on one side of the first magnetic structure far away from the second magnetic structure, and the second conductive coil is located on one side of the second magnetic structure far away from the first magnetic structure.
5. The focus adjustment structure of claim 4, wherein the first and second electrically conductive coils are symmetrically disposed about the optical axis.
6. The focus adjustment structure according to any one of claims 1 to 5, wherein the first magnetic structure and the second magnetic structure are symmetrically arranged along the optical axis.
7. The focal length adjustment structure of any one of claims 1-5, wherein the focal length adjustment structure comprises a mounting structure, the first lens is fixedly connected to the mounting structure, and the first magnetic structure group is fixedly connected to the mounting structure.
8. The focus adjustment structure according to claim 7, wherein the mounting structure is configured as a square structure, and the first magnetic structure and the second magnetic structure are respectively located at opposite sides of the mounting structure.
9. A lens barrel comprising the focal length adjustment structure according to any one of claims 1 to 8.
10. A lens barrel as claimed in claim 9, further comprising a light sensor and at least one second lens, wherein the first lens of the focal length adjustment structure is located between the light sensor and the second lens, and the second lens is used for controlling the transmission of the light passing through the second lens to the position of the light sensor.
11. A mobile terminal, characterized in that it comprises a lens according to claim 9 or 10.
12. The mobile terminal of claim 11, wherein the mobile terminal comprises a middle frame, and wherein the lens is mounted to the middle frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011287382.2A CN114584698B (en) | 2020-11-17 | 2020-11-17 | Focal length adjusting device of lens, lens and terminal |
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| CN202011287382.2A CN114584698B (en) | 2020-11-17 | 2020-11-17 | Focal length adjusting device of lens, lens and terminal |
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| CN114584698B CN114584698B (en) | 2024-02-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460179A (en) * | 2013-09-12 | 2015-03-25 | 奥林巴斯株式会社 | Retention mechanism, driving apparatus, and blur correction apparatus |
| CN108881697A (en) * | 2018-08-15 | 2018-11-23 | 信利光电股份有限公司 | Two axis stabilization holders of one kind and photographic device |
| CN208445658U (en) * | 2018-08-15 | 2019-01-29 | 信利光电股份有限公司 | Two axis stabilization holders of one kind and photographic device |
| CN208924341U (en) * | 2018-10-25 | 2019-05-31 | 信利光电股份有限公司 | A kind of flat elastic piece and rotation stabilization reflecting module |
| CN210839775U (en) * | 2019-12-25 | 2020-06-23 | 南昌欧菲光电技术有限公司 | Camera module and electronic equipment |
-
2020
- 2020-11-17 CN CN202011287382.2A patent/CN114584698B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460179A (en) * | 2013-09-12 | 2015-03-25 | 奥林巴斯株式会社 | Retention mechanism, driving apparatus, and blur correction apparatus |
| CN108881697A (en) * | 2018-08-15 | 2018-11-23 | 信利光电股份有限公司 | Two axis stabilization holders of one kind and photographic device |
| CN208445658U (en) * | 2018-08-15 | 2019-01-29 | 信利光电股份有限公司 | Two axis stabilization holders of one kind and photographic device |
| CN208924341U (en) * | 2018-10-25 | 2019-05-31 | 信利光电股份有限公司 | A kind of flat elastic piece and rotation stabilization reflecting module |
| CN210839775U (en) * | 2019-12-25 | 2020-06-23 | 南昌欧菲光电技术有限公司 | Camera module and electronic equipment |
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| CN114584698B (en) | 2024-02-09 |
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