CN114509855A

CN114509855A - Focal length adjusting structure of lens, lens and terminal

Info

Publication number: CN114509855A
Application number: CN202011289621.8A
Authority: CN
Inventors: 陈朝喜
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2022-05-17
Anticipated expiration: 2040-11-17
Also published as: CN114509855B

Abstract

The disclosure relates to a focal length adjusting structure of a lens, the lens and a terminal, wherein the focal length adjusting structure comprises at least one moving assembly and a first lens matched with the moving assembly and used for adjusting focal length, the moving assembly comprises a plurality of moving parts and moving tracks matched with the moving parts, one of the moving parts and the moving tracks is connected with the first lens, and the moving parts move along the moving tracks to enable the first lens to move along an optical axis of light passing through the first lens. The focal length adjusting structure has fewer structural parts and is easy to assemble and maintain; only set up a first lens that is used for adjusting the focus, the lens quantity is less, and the space occupies lessly for the size that is provided with the camera lens of this focus adjustment structure and sets up the terminal of above-mentioned camera lens is less, experiences better. In addition, in the focal length adjusting structure, the adjustment of the focal length is realized through the movement of the first lens, the random adjustment of the focal length can be realized, the adjustment of the focal length is smoother, and the user experience is better.

Description

Focal length adjusting structure of lens, lens and terminal

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

The focal length adjustment structure of camera lens generally includes a plurality of lenses that are used for zooming, through the selection that carries out the difference to a plurality of lenses and the adjustment that the combination realized the focus, among this focal length adjustment structure, owing to set up a plurality of lenses, lead to the structure more, the equipment is all inconvenient with the maintenance to the space that occupies is great, influences the overall size of camera lens, thereby leads to the terminal size that is provided with this camera lens great, uses to experience not good. In addition, since the focal length adjustment structure adjusts the focal length by combining different lenses of the plurality of lenses, the focal length cannot be adjusted smoothly, arbitrary zooming cannot be realized, and user experience is poor.

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, there is provided a focal length adjusting structure of a lens, the focal length adjusting structure including at least one moving assembly and a first lens cooperating with the moving assembly for adjusting a focal length, the moving assembly including a plurality of moving members and a moving track cooperating with the moving members, the first lens being connected to the moving members or the moving track;

and the first lens moves along the optical axis of the light ray passing through the first lens through the movement of the moving piece along the moving track.

Optionally, the moving element includes a ball, the moving track includes a rolling groove matched with the ball, an extending direction of the rolling groove is parallel to a direction of the optical axis, and the ball rolls along the extending direction of the rolling groove, so that the first lens moves along the optical axis of the light passing through the first lens.

Optionally, the focal length adjustment structure includes a mounting structure, and the first lens and the ball are connected by the mounting structure, wherein the first lens is mounted on the mounting structure, the mounting structure is a square structure, and a plurality of balls are disposed on the mounting structure.

Optionally, the moving part includes a sliding rod, the moving track includes a sliding groove matched with the sliding rod, an extending direction of the sliding groove is parallel to a direction of the optical axis, and the sliding rod enables the first lens to move along the optical axis of the light passing through the first lens by sliding along the extending direction of the sliding groove.

Optionally, the focal length adjustment structure includes a mounting structure, the first lens with the motion piece passes through the mounting structure links to each other, wherein, the first lens install in the mounting structure, the both sides that carry on the back of the body of mounting structure set up two respectively the litter, the extending direction of litter with the extending direction of spout is the same, the litter card is gone into in the sliding tray.

Optionally, the plurality of moving parts are arranged in central symmetry about the center of the first lens.

Optionally, the moving member is configured as a hard rubber structural member; and/or the presence of a gas in the gas,

and a lubricating layer is arranged between the moving track and the moving part.

Optionally, a damping structure is disposed at an end of the moving track in the extending direction, and when the moving member moves from a position far away from the damping structure to a position where the damping structure is located and contacts with the damping structure, the damping structure is configured to provide resistance for the moving member to continue moving.

Optionally, the moving track comprises a damping layer constituting a contact surface of the moving track for contacting the moving part.

Optionally, the focal length adjusting structure includes a fixing bracket, the moving track is connected to the fixing bracket, and the moving member is connected to the first lens.

Optionally, the focal length adjustment structure includes a first magnetic structure group and a first conductive coil group matched with the first magnetic structure group, one of the moving element and the moving track is connected to the first magnetic structure group, and a magnetic field formed by the first magnetic structure group is matched with a magnetic field formed by the first conductive coil, so that the moving element moves along the moving track.

Optionally, the focal length adjustment structure includes a mounting structure, the mounting structure is configured to mount the moving element, the first magnetic structure group, and the first lens, so that the first magnetic structure group is connected to the moving element through the mounting structure, the first lens is connected to the moving element through the mounting structure, the moving element, the first lens, and the first magnetic structure group are configured to form a moving assembly, and the first conductive coil group is configured according to a mass of the moving assembly.

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 terminal including a middle frame and the lens according to the second aspect, the lens being mounted to the middle frame.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in the focal length adjusting structure, only one first lens for adjusting the focal length can be arranged, and the first lens moves along the optical axis of light passing through the first lens through the mutual movement of the moving piece and the moving track, so that the adjustment of the focal length is realized. The focal length adjusting structure has fewer structural parts and is easy to assemble and maintain; only set up a first lens that is used for adjusting the focus, the lens quantity is less, and the space occupies lessly for the size that is provided with the camera lens of this focus adjustment structure and sets up the terminal of above-mentioned camera lens is less, experiences better. In addition, in the focal length adjusting structure, the adjustment of the focal length is realized through the movement of the first lens, the random adjustment of the focal length can be realized, the adjustment of the focal length is smoother, and the user experience is better.

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 top view of a first lens shown according to an exemplary embodiment.

Fig. 2 is a schematic structural diagram illustrating a first mounting structure according to an exemplary embodiment.

Fig. 3 is a schematic view (view in the optical axis projection direction) showing the fitting of the moving member with the moving rail according to an exemplary embodiment.

Fig. 4 is a schematic diagram illustrating light transmission of a lens according to an exemplary embodiment.

Fig. 5 is a partial top view of a second lens shown in accordance with an exemplary embodiment.

FIG. 6 is a schematic diagram illustrating a second mounting structure according to an exemplary embodiment.

Fig. 7 is a schematic view (view in the optical axis projection direction) showing the fitting of the moving member with the moving rail 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 embodiments described in the following exemplary embodiments do not represent all embodiments 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.

Based on the above circumstances, this disclosure provides a focus adjustment structure of camera lens, and in this focus adjustment structure, can only set up a first lens that is used for adjusting the focus, through motion piece and the orbital mutual motion of motion, realize that first lens is along the optical axis motion of the light through it, realize the adjustment of focus. The focal length adjusting structure has fewer structural parts and is easy to assemble and maintain; only set up a first lens that is used for adjusting the focus, the lens quantity is less, and the space occupies lessly for the size that is provided with the camera lens of this focus adjustment structure and sets up the terminal of above-mentioned camera lens is less, experiences better. In addition, in the focal length adjusting structure, the adjustment of the focal length is realized through the movement of the first lens, the random adjustment of the focal length can be realized, the adjustment of the focal length is smoother, and the user experience is better.

In one exemplary embodiment, a focal length adjustment structure of a lens, such as a lens of a camera, a lens of a video camera, or a lens of a projector, etc., is provided. As shown in fig. 1 to 7, the focal length adjusting structure includes at least one moving component and a first lens 3 cooperating with the moving component for adjusting the focal length, where the first lens 3 is, for example, a convex lens or a concave lens.

The moving assembly comprises a plurality of moving members 1 and moving rails 2 matched with the moving members 1, wherein each moving member 1 is matched with one moving rail 2, so that the moving members 1 move along the corresponding moving rail 2. The plurality of moving members 1 are arranged, so that the impact area of the moving members 1 and the moving track 2 is increased, and the influence of the impact on the shaking of the first lens 3 is reduced. For example, when the lens is the lens of a camera, the image formed by the camera can be better prevented from shaking, and the imaging quality is improved. In addition, the plurality of moving parts 1 can reduce the aging and abrasion speed of each moving part 1, the first lens 3 is prevented from being eccentric to a certain degree, the first lens 3 can still move stably, and the stability of focal length adjustment is ensured. For example, when the lens is a lens of a camera, the deformation of an image formed by the camera can be better avoided, the stability of a focusing process can be improved, and the shooting efficiency and the imaging quality are improved.

One of the moving member 1 and the moving track 2 is connected to the first lens 3, and the focal length adjusting structure moves the first lens 3 along the optical axis 11 of the light passing through the first lens 3 by the movement of the moving member 1 along the moving track 2, so as to adjust the focal length of the lens.

That is, the focus adjustment structure includes two schemes: in the scheme 1, a moving part is connected with a first lens, and the first lens moves along an optical axis through the movement of the moving part relative to a moving track; and 2, the moving track is connected with the first lens, and the first lens moves along the optical axis through the movement of the moving track relative to the moving piece. In the two schemes, the movement of the first lens is realized through the relative movement of the moving piece and the moving track.

In one example, the lens is a periscopic lens, also called an inner zoom lens, of a mobile phone. Referring to fig. 5-7, a moving assembly and a first lens 3 cooperating with the moving assembly are disposed in the lens barrel, and the first lens 3 is a convex lens. The motion assembly comprises four motion pieces 1, the four motion pieces 1 are connected with a first lens 3, the connection is realized by other structures including the motion piece 1 and the first lens 3, the first lens 3 is installed on an installation structure 4, the motion piece 1 is also installed on the installation structure 4, and at the moment, the motion piece 1 and the first lens 3 are connected through the installation structure 4. One motion track 2 is configured for each motion member 1, or the motion members 1 moving along the same linear direction share one motion track 2. The moving member 1 moves along the moving track 2, and drives the first lens 3 to move along the optical axis 11 of the light passing through the first lens 3, so as to achieve the effect of adjusting the focal length of the lens.

It should be noted that when the lens barrel includes a plurality of kinematic assemblies, the types of the first lenses 3 engaged with each kinematic assembly may be the same or different.

In an example (this example is not shown in the figure), the lens is also a periscopic lens, and the lens is provided with two moving assemblies and a first lens matched with the moving assemblies, wherein the first lens matched with the first moving assembly in the two moving assemblies is a convex lens, the first lens matched with the second moving assembly in the two moving assemblies is a concave lens, and the two moving assemblies are arranged to respectively adjust the positions of the convex lens and the concave lens so as to improve the adjustment range of the focal length, thereby improving the adaptability of the lens.

In an example (this example is not shown in the figure), the lens is also a periscopic lens, and the lens is provided with two moving assemblies and a first lens matched with the moving assemblies, wherein the first lens matched with the first moving assembly in the two moving assemblies is a convex lens, and the first lens matched with the second moving assembly in the two moving assemblies is also a convex lens, and the two moving assemblies are arranged to respectively adjust the positions of the two convex lenses to improve the adjustment range of the focal length, so that the adaptability of the lens is improved.

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 impact on the shaking of the first lens is reduced; in addition, the plurality of moving parts can reduce the aging and abrasion speed of each moving part, the first lens is prevented from being eccentric to a certain degree, the first lens can still move stably, and the stability of focal length adjustment is ensured.

In an exemplary embodiment, a focal length adjusting structure of a lens barrel is provided, as shown with reference to fig. 1 to 7, in which a plurality of moving members 1 are disposed in central symmetry with respect to a center of a first lens 3. The wear degree and the aging degree of each moving part 1 are relatively close, even if the moving parts 1 are aged and worn, the first lens 3 is eccentric, the first lens 3 can still move stably, and the stability of focal length adjustment is ensured.

For example, when the lens is a lens of a camera, since the plurality of moving members 1 are arranged in central symmetry with respect to the center of the first lens 3, the image formed by the camera can be better prevented from being deformed, the stability of the focusing process can be improved, and the shooting efficiency and the imaging quality can be improved.

In an exemplary embodiment, in order to reduce friction between a moving member and a moving rail and thus to prevent wear and aging of the moving member and the moving rail, there is provided a focal length adjusting structure of a lens, as shown with reference to fig. 1 to 7, in which the moving member 1 is constructed as a hard rubber structural member; and/or a lubricating layer (not shown in the figure) is arranged between the moving track 2 and the moving piece 1.

For example, the moving element 1 is a hard rubber structural element made of hard rubber, so as to reduce the friction between the moving element 1 and the moving track 2 and better avoid the abrasion and aging of the moving element 1 and the moving track 2.

For another example, the surface of the moving rail 2 is provided with a lubricating layer, and the lubricating layer is formed by lubricating oil or graphite powder, so as to reduce the friction force between the moving part 1 and the moving rail 2 and better avoid the abrasion and the aging of the moving part 1 and the moving rail 2.

For another example, the surface of the moving element 1 is provided with a lubricating layer, and the lubricating layer is formed by lubricating oil or graphite powder, so as to reduce the friction force between the moving element 1 and the moving rail 2 and better avoid the abrasion and the aging of the moving element 1 and the moving rail 2.

For another example, the surfaces of the moving track 2 and the moving element 1 are provided with a lubricating layer to better reduce the friction between the moving element 1 and the moving track 2 and to better avoid the wear and the aging of the moving element 1 and the moving track 2.

For another example, the moving element 1 is a hard rubber structural element made of hard rubber, and the surfaces of the moving rail 2 and the moving element 1 are both provided with a lubricating layer, so as to better reduce the friction force between the moving element 1 and the moving rail 2 and better avoid the abrasion and the aging of the moving element 1 and the moving rail 2.

In an exemplary embodiment, a focal length adjusting structure of a lens barrel is provided, as shown in fig. 1 to 7, in which a damping structure (not shown) is disposed at an end portion of an extending direction of a moving rail 2, and after the moving member 1 moves from a position away from the damping structure to a position where the damping structure is located and contacts with the damping structure, the damping structure is configured to provide resistance to a continued movement of the moving member 1, so as to prevent the moving member 1 from violently colliding with the end portion of the moving rail 2, reduce a shake of a first lens 3 caused by the collision, and reduce wear and aging of the moving member 1 and the moving rail 2 caused by the collision.

In one example, the damping structure is a rubber structure, and the end of the moving rail 2 in the extending direction is provided with the rubber structure, and the rubber structure is fixedly connected with the end of the moving rail 2 so as to prevent the rubber structure from falling off from the moving rail 2. When the moving part 1 moves from the middle position of the moving track 2 to the end position of the moving track 2, the rubber structure has certain elasticity, and after the moving part 1 is contacted with the rubber structure, the moving part 1 compresses the rubber structure, so that the rubber structure generates elastic deformation, and the rubber structure can provide certain resistance for the moving part 1, thereby avoiding violent impact between the moving part 1 and the end of the moving track 2.

In one example, the damping structure is a spring structure, and the end of the moving rail 2 in the extending direction is provided with the spring structure, and the spring structure is fixedly connected with the end of the moving rail 2 to prevent the spring structure from falling off from the moving rail 2. When the moving part 1 moves from the middle position of the moving track 2 to the end position of the moving track 2, because the spring structure has certain elasticity, after the moving part 1 is contacted with the spring structure, the moving part 1 compresses the spring structure, so that the spring structure generates elastic deformation, and the spring structure can provide certain resistance for the moving part 1, thereby avoiding violent impact generated by the moving part 1 and the end of the moving track 2.

In an exemplary embodiment, a focal length adjusting structure of a lens barrel is provided, which is shown in fig. 1 to 7, wherein the moving rail 2 includes a damping layer (not shown in the figure) which constitutes a contact surface of the moving rail 2 for contacting with the moving member 1, so as to avoid a hard-to-hard contact between the moving member 1 and the moving rail 2, and to better avoid abrasion of the moving member 1 and the moving rail 3 caused by impact therebetween and shaking of the first lens.

Wherein, the damping layer includes the structural layer that has certain elasticity such as the cotton layer of bubble, silica gel layer.

In one example, the movement track 2 comprises a layer of foam of a certain thickness, for example 1 mm. The foam layer forms the surface of the movement track 2, which is intended to come into contact with the movement element 1, so that a hard-to-hard contact between the movement element 1 and the movement track 2 is avoided.

In one example, the movement track 2 comprises a layer of silicone of a certain thickness, for example 0.5 mm. This layer of silicone constitutes the surface of the movement track 2 which is intended to be in contact with the moving part 1, so that a hard-to-hard contact between the moving part 1 and the movement track 2 is avoided.

In an exemplary embodiment, a focal length adjusting structure of a lens barrel is provided, as shown in fig. 1 to 4, in which a moving member 1 includes a ball, a moving rail 2 includes a rolling groove engaged with the ball, an extending direction of the rolling groove is parallel to a direction of an optical axis 11, and the ball rolls along the extending direction of the rolling groove, so that a first lens 3 moves along the optical axis 11 of a light passing through the first lens 3.

In this focus adjustment structure, through the cooperation of a plurality of balls and corresponding roll groove for the motion of first lens 3 is more steady, reliable, and can reduce the impact between motion 1 and the motion track 2 to a certain extent, further reduces the ageing and the wearing and tearing speed of every motion 1, and eccentricity appears in first lens 3 is avoided to a certain extent, still can make 3 stationary motion of first lens, ensures the stationarity of focus adjustment.

In addition, in the focal length adjusting structure, the ball and the rolling groove can slide relatively through the prior art, which is not described herein.

In one example, referring to fig. 1 to 4, the focal length adjusting structure further includes a mounting structure 4, the first lens 3 and the moving element 1 are connected by the mounting structure 4, wherein the first lens 3 is mounted on the mounting structure 4, and the mounting structure 4 is configured as a square structure, which may be a rectangular structure or a square structure. Balls are respectively arranged at eight vertex angles of the mounting structure 4, wherein two balls moving along the same linear direction can share one rolling groove. In this focal length adjustment structure, the first lens 3 is made to move stably along the optical axis 11 by the rolling of the eight balls along the corresponding rolling grooves, thereby achieving the effect of adjusting the focal length of the lens.

In one example (this example is not shown in the figure), the focal length adjusting structure further includes a mounting structure, and the first lens and the moving member are connected through the mounting structure, wherein the first lens is mounted on the mounting structure, and the mounting structure is configured as a square structure, and the square structure can be a rectangular structure or a square structure. The number of the balls is four, the four balls are respectively arranged at the geometric centers of the four side surfaces of the square structure, each side surface is parallel to the optical axis, and in the focal length adjusting structure, the first lens stably moves along the optical axis through the rolling of the four balls along the corresponding rolling grooves, so that the effect of adjusting the focal length of the lens is realized.

The mounting structure may be other regular cubic structures, such as an octahedral structure or a spherical structure.

In one example (the example is not shown in the figures), the mounting structure is an octahedral structure, two opposite sides of which are perpendicular to the optical axis, and the optical axis passes through the geometric center of the above-mentioned sides. The other side faces of the octahedral structure are parallel to the optical axis, the geometric centers of the other side faces are respectively provided with a ball, and each ball is provided with a rolling groove. In the focal length adjusting structure, the first lens stably moves along the optical axis through the rolling of the six balls along the corresponding rolling grooves, and the effect of adjusting the focal length of the lens is achieved.

In one example (not shown), the mounting structure is a ball-shaped structure, the center of the ball-shaped structure coincides with the center of the first lens, the ball-shaped structure is axisymmetrically arranged with respect to the optical axis, the ball-shaped structure is provided with four balls, the four balls are also axisymmetrically arranged with respect to the optical axis, and each ball is provided with a rolling groove. In the focal length adjusting structure, the first lens stably moves along the optical axis through the rolling of the six balls along the corresponding rolling grooves, and the effect of adjusting the focal length of the lens is achieved.

In an exemplary embodiment, a focus adjustment structure of a lens barrel is provided, as shown in fig. 4 to 7, in which a moving member 1 includes a slide bar, a moving rail 2 includes a slide groove engaged with the slide bar, an extending direction of the slide groove is parallel to a direction of an optical axis 11, and the slide bar moves a first lens 3 along the optical axis 11 of light passing through the first lens 3 by sliding along the extending direction of the slide groove.

In this focus adjustment structure, through the cooperation of a plurality of litter and corresponding sliding tray for the motion of first lens 3 is more steady, reliable, and can reduce the impact between motion 1 and the motion track 2 to a certain extent, further reduces the ageing and the wearing and tearing speed of every motion 1, and eccentricity appears in first lens 3 is avoided to a certain extent, still can make 3 stationary motion of first lens, ensures the stationarity of focus adjustment.

In addition, in the focal length adjusting structure, the sliding rod and the sliding groove can slide relatively through the prior art, which is not described herein.

In one example (not shown in the figures), the focal length adjusting structure comprises a mounting structure, and the first lens and the moving part are connected through the mounting structure, wherein the first lens is mounted on the mounting structure, two sliding rods are respectively arranged on two opposite sides of the mounting structure, the extending direction of the sliding rods is the same as the extending direction of the sliding grooves, and the sliding rods are clamped in the sliding grooves. In the focal length adjusting structure, the first lens stably moves along the optical axis through the sliding of the four sliding rods along the corresponding sliding grooves, and the effect of adjusting the focal length of the lens is achieved.

In one example, referring to fig. 4-7, the focal length adjusting structure includes a mounting structure 4, the first lens 3 and the moving element 1 are connected by the mounting structure 4, wherein the first lens 3 is mounted on the mounting structure 4, a slide bar is respectively disposed at four edges of the mounting structure 4 parallel to the optical axis 11, the extending direction of the slide bar is the same as the extending direction of the sliding chute, and the slide bar is snapped into the sliding chute. In this focal length adjustment structure, the first lens 3 stably moves along the optical axis 11 by the sliding of the four slide bars along the corresponding slide grooves, thereby achieving the effect of adjusting the focal length of the lens.

The mounting structure in this embodiment is similar to the mounting structure in the embodiment in which the moving member is a ball, and may be other regular cubic structures.

In one example (the example is not shown in the figures), the mounting structure is an octahedral structure, two opposite sides of which are perpendicular to the optical axis, and the optical axis passes through the geometric center of the above-mentioned sides. All the other side faces of the octahedral structure are parallel to the optical axis, a sliding rod is arranged on each of the other side faces, each sliding rod passes through the geometric center of the corresponding side face and is parallel to the optical axis, and each sliding rod is provided with a sliding groove. In the focal length adjusting structure, the first lens stably moves along the optical axis through the sliding of the six sliding rods along the corresponding sliding grooves, so that the effect of adjusting the focal length of the lens is realized.

In an exemplary embodiment, a focus adjustment structure of a lens is provided, which, as shown in fig. 1 to 7, includes a fixed bracket 5, and a moving rail 2 connected to the fixed bracket 5. The fixing bracket 5 may be the same structure as the housing of the lens, or may be a part of the housing, or may be another structure connected to the housing. The motion piece 1 links to each other with first lens 3, and motion piece 1 is used for driving the relative fixed bolster 5 motion of first lens 3, and this focus adjustment structure has improved overall stability through setting up fixed bolster 5.

In one example (the example is not shown in the figure), the focus adjusting structure includes a fixing bracket configured as a square frame, rolling grooves are fixedly provided on four edges of the square frame parallel to the optical axis, and each rolling groove is provided with two balls. The focal length adjusting structure also comprises a mounting structure, wherein the first lens is mounted on the mounting structure, the mounting structure is a square structure, and the square structure is matched with the square frame. The eight vertex angles of the mounting structure are respectively provided with a ball, wherein two balls with a connecting line parallel to the optical axis share one rolling groove. In this focus adjustment structure, the roll through the ball along corresponding roll groove makes first lens along the steady motion of optical axis, realizes the effect of the focus of adjustment camera lens, and overall structure is comparatively stable, and the reliability is higher.

In one example, referring to fig. 4 to 7, the focus adjustment structure includes a fixing bracket 5, the fixing bracket 5 is configured as a square frame, four edges of the square frame parallel to the optical axis are fixedly provided with sliding grooves, and each sliding groove is provided with a sliding rod. The focus adjustment structure comprises a mounting structure 4, the mounting structure 4 being configured as a square structure, the square structure being adapted to the square frame. The first lens 3 is mounted on a mounting structure 4, a slide rod is respectively arranged at the position of four side edges of the mounting structure 4 parallel to the optical axis, the extending direction of the slide rod is the same as the extending direction of a slide groove, and the slide rod is clamped into the slide groove, wherein each slide rod is provided with one slide groove. In this focus adjustment structure, the slip through four litter along corresponding sliding tray makes first lens 3 along the steady motion of optical axis 11, realizes the effect of the focus of adjustment camera lens, and overall structure is comparatively stable, and the reliability is higher.

It should be noted that, when the focal length adjusting structure includes a plurality of first lenses for adjusting the focal length, a plurality of mounting structures may be correspondingly disposed in the fixing bracket.

In one example (the example is not shown in the figure), the focus adjusting structure includes a fixing bracket configured as a square frame, and rolling grooves are fixedly provided on four edges of the square frame parallel to the optical axis, and each rolling groove is provided with four balls. The focal length adjusting structure also comprises two mounting structures, wherein a first lens is mounted in each mounting structure, the mounting structures are square structures, and the square structures are matched with the square frames. The ball bearings are respectively arranged at eight vertex angles of the mounting structures, wherein in the two mounting structures, the four ball bearings of which the connecting lines are parallel to the optical axis share one rolling groove. In this focus adjustment structure, the roll through the ball along corresponding roll groove makes first lens along the steady motion of optical axis, realizes the effect of the focus of adjustment camera lens, and overall structure is comparatively stable, and the reliability is higher. In addition, because two first lenses are arranged, more accurate focal length adjustment and focal length adjustment in a wider range can be realized, and the adaptability of the focal length adjusting structure is improved.

In an exemplary embodiment, a focus adjustment structure of a lens is provided, and as shown in fig. 1 to 7, the focus adjustment structure further includes a first magnetic structure group 6 and a first conductive coil group 7 cooperating with the first magnetic structure group 6, one of the moving element 1 and the moving track 2 is connected to the first magnetic structure group 6, and a magnetic field formed by the first magnetic structure group 6 cooperates with a magnetic field formed by the first conductive coil to move the moving element 1 along the moving track 2.

The focal length adjusting structure comprises a mounting structure 4, wherein the mounting structure 4 is used for mounting the moving part 1, the first magnetic structure group 6 and the first lens 3, the first magnetic structure group 6 is connected with the moving part 1 through the mounting structure 4, the first lens 3 is connected with the moving part 1 through the mounting structure 4, the moving part 1, the first lens 3 and the first magnetic structure group 6 are used for forming a moving assembly, and the first conductive coil group 7 is arranged according to the mass of the moving assembly.

For example, the greater the mass of the moving component, the greater the number of conductive coils in the first conductive coil set 7; and/or the greater the mass of the moving component, the greater the number of coil windings of the conductive coils in the first conductive coil set 7; and/or the greater the mass of the moving component, the greater the value of the current in the first set 7 of electrically conductive coils through the electrically conductive coils.

In one example, the mass of the moving assembly is a, the first magnetic structure group 6 comprises two magnets which are oppositely arranged, the first conductive coil group 7 comprises two conductive coils which are respectively matched with the two magnets, the number of winding turns of each conductive coil is a, the moving part 1 is connected with the first magnetic structure group 6, the magnets move through the matching between a magnetic field formed by the two conductive coils after being electrified and a magnetic field formed by the two magnets, and the moving part 1 connected with the moving part is driven by the movement of the magnets to move so that the moving part 1 moves along the moving track 2. The "magnet movement is realized by the cooperation between the magnetic field formed by the two conductive coils after being electrified and the magnetic field formed by the two magnets" through the prior art, which is not described herein.

In one example, the mass of the moving component is B, where B is greater than a, the first magnetic structure group 6 includes two magnets arranged oppositely, the first conductive coil group 7 includes four conductive coils respectively matched with the two magnets, and the number of coil winding turns of each conductive coil is a, wherein each magnet is provided with two conductive coils. The moving piece 1 is connected with the first magnetic structure group 6, the magnets move through the matching between the magnetic field formed by the energization of the four conductive coils and the magnetic field formed by the two magnets, and the magnets move to drive the moving piece 1 connected with the magnets to move, so that the moving piece 1 moves along the moving track 2.

In one example, the mass of the moving component is B, where B is greater than a, the first magnetic structure group 6 includes two magnets disposed opposite to each other, the first conductive coil group 7 includes two conductive coils respectively engaged with the two magnets, and each conductive coil has a coil winding number of B, where B is greater than a. The moving part 1 is connected with the first magnetic structure group 6, the magnets move through the matching between the magnetic field formed by the two conductive coils after being electrified and the magnetic field formed by the two magnets, and the magnets move to drive the moving part 1 connected with the magnets to move, so that the moving part 1 moves along the moving track 2.

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. 1-4, the lens is a periscopic lens mounted on a mobile phone, the lens includes a focal length adjustment structure, a flexible circuit board 13, a light sensor 12 and at least one second lens 8, wherein the light sensor 12 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 12 and the second lens 8, and the second lens 8 is used for controlling the position of the optical sensor 12 where the light passing through the second lens 8 is transmitted. The optical axis 11 in this application refers to the optical axis 11 of the light passing through the second lens 8.

The lens further comprises a second conductive coil group 10 and a second magnetic structure group 9, and the second conductive coil group 10 and the second magnetic structure group 9 are matched to drive the second lens 8 to rotate so as to adjust the transmission direction of light. The second mirror 8 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 6 and a first conductive coil group 7, wherein the first lens 3 is mounted in the mounting structure 4, and a flexible circuit board 13 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 11, and balls are arranged at each vertex of the mounting structure 4. Wherein, two balls whose connecting line is parallel to the optical axis 11 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 6 includes first magnetic structure and the second magnetic structure that sets up along 11 direction intervals of optical axis, first magnetic structure and second magnetic structure are located mounting structure 4' S relative both sides respectively, and first magnetic structure and second magnetic structure are axisymmetric setting about optical axis 11, first magnetic structure includes two first magnets along the range upon range of setting of first direction, second magnetic structure includes two second magnets along the range upon range of setting of first direction, the N utmost point and the S utmost point of first magnet and second magnet all set up along 11 directions of optical axis.

The first conductive coil set 7 is located on the flexible circuit board 13, and a detection circuit, such as a hall sensor detection circuit, is further disposed on the flexible circuit board 13. The first conductive coil group 7 comprises a first conductive coil and a second conductive coil, the first conductive coil is located on the outer side of the first magnetic structure and used for providing driving force for the first magnet located on the outermost side to move along the optical axis 11 direction, and the second conductive coil is located on the outer side of the second magnetic structure and used for providing driving force for the second magnet located on the outermost side to move along the optical axis 11 direction.

In this focus adjustment structure, first conductive coil and the first magnet interact that is located the outside for first magnetic structure moves along optical axis 11, and simultaneously, second conductive coil and the second magnet interact that is located the outside, make second magnetic structure along the direction the same with the direction of first magnetic structure motion, first magnetic structure and second magnetic structure move along same direction, drive mounting structure 4 and move, mounting structure 4 drives first lens 3 and moves along optical axis 11, realizes the purpose of adjustment focus.

The focal length adjusting structure is provided with a plurality of moving parts 1, and the plurality of moving parts 1 increase the impact area of the moving parts 1 and the moving track 2 and reduce the influence of impact on the shaking of the first lens 3; in addition, the plurality of moving parts 1 can reduce the aging and abrasion speed of each moving part 1, 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 ground line type 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 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 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 11, 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 disclosure also provides a terminal, for example, a terminal with a shooting function, such as a mobile phone, a notebook computer, a tablet computer, and a camera. The terminal includes the lens as described above, so that the terminal has effects corresponding to the lens.

The 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

1. A focal length adjusting structure of a lens is characterized in that the focal length adjusting structure comprises at least one moving assembly and a first lens matched with the moving assembly for adjusting focal length, the moving assembly comprises a plurality of moving parts and a moving track matched with the moving parts, and the first lens is connected with the moving parts or the moving track;

2. The focal length adjustment structure of claim 1, wherein the moving member includes a ball, the moving track includes a rolling groove engaged with the ball, the rolling groove extends in a direction parallel to the optical axis, and the ball rolls along the extending direction of the rolling groove, so that the first lens moves along the optical axis of the light passing through the first lens.

3. The focus adjustment structure of claim 2, wherein the focus adjustment structure comprises a mounting structure through which the first lens and the balls are connected, wherein the first lens is mounted to the mounting structure, and wherein the mounting structure is configured as a square structure on which a plurality of the balls are disposed.

4. The focal length adjustment structure according to claim 1, wherein the moving member includes a slide bar, the moving rail includes a slide groove engaged with the slide bar, an extending direction of the slide groove is parallel to a direction of the optical axis, and the slide bar moves the first lens along the optical axis of the light passing through the first lens by sliding along the extending direction of the slide groove.

5. The focal length adjustment structure of claim 4, wherein the focal length adjustment structure includes a mounting structure, the first lens and the moving element are connected through the mounting structure, the first lens is mounted on the mounting structure, two sliding rods are respectively disposed on two opposite sides of the mounting structure, an extending direction of the sliding rods is the same as an extending direction of the sliding grooves, and the sliding rods are clamped into the sliding grooves.

6. The focus adjusting structure according to any one of claims 1 to 5, wherein the plurality of moving members are disposed in central symmetry with respect to a center of the first lens.

7. The focus adjustment structure according to any one of claims 1 to 5,

the moving part is constructed into a hard rubber structural part; and/or the presence of a gas in the gas,

8. The focal length adjustment structure according to any one of claims 1 to 5, wherein a damping structure is disposed at an end of the motion track in the extending direction, and the damping structure is configured to provide resistance to the continued motion of the motion member after the motion member moves from a position away from the damping structure to a position where the damping structure is located and contacts with the damping structure.

9. The focus adjustment structure according to any one of claims 1 to 5, wherein the moving rail includes a damping layer constituting a contact surface of the moving rail for contact with the moving member.

10. The focus adjusting structure according to any one of claims 1 to 5, wherein the focus adjusting structure comprises a fixed bracket, the moving track is connected to the fixed bracket, and the moving member is connected to the first lens.

11. The focus adjustment structure according to any one of claims 1 to 5, wherein the focus adjustment structure comprises a first magnetic structure group and a first conductive coil group coupled to the first magnetic structure group, one of the moving element and the moving track is coupled to the first magnetic structure group, and a magnetic field generated by the first magnetic structure group is coupled to a magnetic field generated by the first conductive coil to move the moving element along the moving track.

12. The focus adjustment structure of claim 11, wherein the focus adjustment structure comprises a mounting structure for mounting the moving member, the first magnetic structure group and the first lens, such that the first magnetic structure group is connected to the moving member through the mounting structure and the first lens is connected to the moving member through the mounting structure, the moving member, the first lens and the first magnetic structure group are used for forming a moving assembly, and the first conductive coil group is arranged according to a mass of the moving assembly.

13. A lens barrel comprising the focal length adjustment structure according to any one of claims 1 to 12.

14. A lens barrel as claimed in claim 13, 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 to control the transmission of the light passing through the second lens to the position of the light sensor.

15. A terminal characterized in that it comprises a middle frame and a lens according to claim 13 or 14, said lens being mounted to said middle frame.